expr.c (store_constructor): Properly compute displacement and alignment when offset...

[thirdparty/gcc.git] / gcc / configure.in

# configure.in for GNU CC
# Process this file with autoconf to generate a configuration script.

# Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.

#This file is part of GNU CC.

#GNU CC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2, or (at your option)
#any later version.

#GNU CC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with GNU CC; see the file COPYING.  If not, write to
#the Free Software Foundation, 59 Temple Place - Suite 330,
#Boston, MA 02111-1307, USA.

# Initialization and defaults
AC_PREREQ(2.13)
AC_INIT(tree.c)
AC_CONFIG_HEADER(auto-host.h:config.in)

remove=rm
hard_link=ln
symbolic_link='ln -s'
copy=cp

# Check for bogus environment variables.
# Test if LIBRARY_PATH contains the notation for the current directory
# since this would lead to problems installing/building glibc.
# LIBRARY_PATH contains the current directory if one of the following
# is true:
# - one of the terminals (":" and ";") is the first or last sign
# - two terminals occur directly after each other
# - the path contains an element with a dot in it
AC_MSG_CHECKING(LIBRARY_PATH variable)
changequote(,)dnl
case ${LIBRARY_PATH} in
  [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
    library_path_setting="contains current directory"
    ;;
  *)
    library_path_setting="ok"
    ;;
esac
changequote([,])dnl
AC_MSG_RESULT($library_path_setting)
if test "$library_path_setting" != "ok"; then
AC_MSG_ERROR([
*** LIBRARY_PATH shouldn't contain the current directory when
*** building gcc. Please change the environment variable
*** and run configure again.])
fi

# Test if GCC_EXEC_PREFIX contains the notation for the current directory
# since this would lead to problems installing/building glibc.
# GCC_EXEC_PREFIX contains the current directory if one of the following
# is true:
# - one of the terminals (":" and ";") is the first or last sign
# - two terminals occur directly after each other
# - the path contains an element with a dot in it
AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
changequote(,)dnl
case ${GCC_EXEC_PREFIX} in
  [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
    gcc_exec_prefix_setting="contains current directory"
    ;;
  *)
    gcc_exec_prefix_setting="ok"
    ;;
esac
changequote([,])dnl
AC_MSG_RESULT($gcc_exec_prefix_setting)
if test "$gcc_exec_prefix_setting" != "ok"; then
AC_MSG_ERROR([
*** GCC_EXEC_PREFIX shouldn't contain the current directory when
*** building gcc. Please change the environment variable
*** and run configure again.])
fi

# Check for additional parameters

# With GNU ld
AC_ARG_WITH(gnu-ld,
[  --with-gnu-ld           arrange to work with GNU ld.],
gnu_ld_flag="$with_gnu_ld",
gnu_ld_flag=no)

# With pre-defined ld
AC_ARG_WITH(ld,
[  --with-ld               arrange to use the specified ld (full pathname).],
DEFAULT_LINKER="$with_ld")
if test x"${DEFAULT_LINKER+set}" = x"set"; then
  if test ! -x "$DEFAULT_LINKER"; then
    AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
  elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
    gnu_ld_flag=yes
  fi
  AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER")
fi

# With GNU as
AC_ARG_WITH(gnu-as,
[  --with-gnu-as           arrange to work with GNU as.],
gas_flag="$with_gnu_as",
gas_flag=no)

AC_ARG_WITH(as,
[  --with-as               arrange to use the specified as (full pathname).],
DEFAULT_ASSEMBLER="$with_as")
if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
  if test ! -x "$DEFAULT_ASSEMBLER"; then
    AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
  elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
    gas_flag=yes
  fi
  AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER")
fi

# With stabs
AC_ARG_WITH(stabs,
[  --with-stabs            arrange to use stabs instead of host debug format.],
stabs="$with_stabs",
stabs=no)

# With ELF
AC_ARG_WITH(elf,
[  --with-elf              arrange to use ELF instead of host debug format.],
elf="$with_elf",
elf=no)

# Specify the local prefix
local_prefix=
AC_ARG_WITH(local-prefix,
[  --with-local-prefix=DIR specifies directory to put local include.],
[case "${withval}" in
yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
no)     ;;
*)      local_prefix=$with_local_prefix ;;
esac])

# Default local prefix if it is empty
if test x$local_prefix = x; then
        local_prefix=/usr/local
fi

# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
# passed in by the toplevel make and thus we'd get different behavior
# depending on where we built the sources.
gcc_gxx_include_dir=
# Specify the g++ header file directory
AC_ARG_WITH(gxx-include-dir,
[  --with-gxx-include-dir=DIR
                          specifies directory to put g++ header files.],
[case "${withval}" in
yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
no)     ;;
*)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
esac])

if test x${gcc_gxx_include_dir} = x; then
  if test x${enable_version_specific_runtime_libs} = xyes; then
    gcc_gxx_include_dir='${libsubdir}/include/g++'
  else
    topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
changequote(<<, >>)dnl
    gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/g++"-${libstdcxx_interface}
changequote([, ])dnl
  fi
fi

# Enable expensive internal checks
AC_ARG_ENABLE(checking,
[  --enable-checking[=LIST]
                          enable expensive run-time checks.  With LIST,
                          enable only specific categories of checks.
                          Categories are: misc,tree,rtl,gc,gcac; default
                          is misc,tree,rtl],
[case "${enableval}" in
yes)    AC_DEFINE(ENABLE_CHECKING)
        AC_DEFINE(ENABLE_TREE_CHECKING)
        AC_DEFINE(ENABLE_RTL_CHECKING)  ;;
no)     ;;
*)      IFS="${IFS=     }"; ac_save_IFS="$IFS" IFS="$IFS,"
        set fnord $enableval; shift
        IFS="$ac_save_IFS"
        for check
        do
                case $check in
                misc)   AC_DEFINE(ENABLE_CHECKING)              ;;
                tree)   AC_DEFINE(ENABLE_TREE_CHECKING)         ;;
                rtl)    AC_DEFINE(ENABLE_RTL_CHECKING)          ;;
                gc)     AC_DEFINE(ENABLE_GC_CHECKING)           ;;
                gcac)   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT)     ;;
                *)      AC_MSG_ERROR(unknown check category $check) ;;
                esac
        done
        ;;
esac])

AC_ARG_ENABLE(cpp,
[  --disable-cpp           don't provide a user-visible C preprocessor.],
[], [enable_cpp=yes])

AC_ARG_WITH(cpp_install_dir,
[  --with-cpp-install-dir=DIR
                          install the user visible C preprocessor in DIR
                          (relative to PREFIX) as well as PREFIX/bin.],
[if test x$withval = xyes; then
  AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
elif test x$withval != xno; then
  cpp_install_dir=$withval
fi])

# Use cpplib+cppmain for the preprocessor, but don't link it with the compiler.
cpp_main=cppmain
AC_ARG_ENABLE(cpplib,
[  --disable-cpplib        use the old isolated C preprocessor.],
if test x$enable_cpplib = xno; then
  cpp_main=cccp
fi)

# Link cpplib into the compiler proper, for C/C++/ObjC.
AC_ARG_ENABLE(c-cpplib,
[  --enable-c-cpplib       link cpplib directly into C and C++ compilers
                          (EXPERIMENTAL) (implies --enable-cpplib).],
if test x$enable_c_cpplib != xno; then
  extra_c_objs="${extra_c_objs} libcpp.a"
  extra_cxx_objs="${extra_cxx_objs} ../libcpp.a"
  extra_c_flags="${extra_c_flags} -DUSE_CPPLIB=1"
  cpp_main=cppmain
fi)

# Enable Multibyte Characters for C/C++
AC_ARG_ENABLE(c-mbchar,
[  --enable-c-mbchar       Enable multibyte characters for C and C++.],
if test x$enable_c_mbchar != xno; then
  extra_c_flags="${extra_c_flags} -DMULTIBYTE_CHARS=1"
fi)
  
# Enable threads
# Pass with no value to take the default
# Pass with a value to specify a thread package
AC_ARG_ENABLE(threads,
[  --enable-threads        enable thread usage for target GCC.
  --enable-threads=LIB    use LIB thread package for target GCC.],
if test x$enable_threads = xno; then
        enable_threads=''
fi,
enable_threads='')

enable_threads_flag=$enable_threads
# Check if a valid thread package
case x${enable_threads_flag} in
        x | xno)
                # No threads
                target_thread_file='single'
                ;;
        xyes)
                # default
                target_thread_file=''
                ;;
        xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
        xsolaris | xwin32 | xdce | xvxworks)
                target_thread_file=$enable_threads_flag
                ;;
        *)
                echo "$enable_threads is an unknown thread package" 1>&2
                exit 1
                ;;
esac

AC_ARG_ENABLE(objc-gc,
[  --enable-objc-gc       enable the use of Boehm's garbage collector with
                          the GNU Objective-C runtime.],
if test x$enable_objc_gc = xno; then
        objc_boehm_gc=''
else
        objc_boehm_gc=1
fi,
objc_boehm_gc='')

AC_ARG_WITH(dwarf2,
[  --with-dwarf2          force the default debug format to be DWARF2.],
dwarf2="$with_dwarf2",
dwarf2=no)

# Determine the host, build, and target systems
AC_CANONICAL_SYSTEM

# Find the native compiler
AC_PROG_CC
AC_GCC_C_LONG_DOUBLE

# If the native compiler is GCC, we can enable warnings even in stage1.  
# That's useful for people building cross-compilers, or just running a
# quick `make'.
if test "x$GCC" = "xyes"; then 
  stage1_warn_cflags='$(WARN_CFLAGS)'
else
  stage1_warn_cflags=""
fi
AC_SUBST(stage1_warn_cflags)

AC_PROG_MAKE_SET

AC_MSG_CHECKING([whether a default assembler was specified])
if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
    if test x"$gas_flag" = x"no"; then
        AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
    else
        AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
    fi
else
    AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING([whether a default linker was specified])
if test x"${DEFAULT_LINKER+set}" = x"set"; then
    if test x"$gnu_ld_flag" = x"no"; then
        AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
    else
        AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
    fi
else
    AC_MSG_RESULT(no)
fi

# Find some useful tools
AC_PROG_AWK
AC_PROG_LEX
GCC_PROG_LN
GCC_PROG_LN_S
GCC_C_VOLATILE
AC_PROG_RANLIB
AC_PROG_YACC
EGCS_PROG_INSTALL

AC_HEADER_STDC
AC_HEADER_TIME
GCC_HEADER_STRING
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
                 fcntl.h unistd.h stab.h sys/file.h sys/time.h \
                 sys/resource.h sys/param.h sys/times.h sys/stat.h \
                 direct.h malloc.h)

# Check for thread headers.
AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])

# See if GNAT has been installed
AC_CHECK_PROG(gnat, gnatbind, yes, no)

# See if the stage1 system preprocessor understands the ANSI C
# preprocessor stringification operator.
AC_C_STRINGIZE

# Use <inttypes.h> only if it exists,
# doesn't clash with <sys/types.h>, and declares intmax_t.
AC_MSG_CHECKING(for inttypes.h)
AC_CACHE_VAL(gcc_cv_header_inttypes_h,
[AC_TRY_COMPILE(
  [#include <sys/types.h>
#include <inttypes.h>],
  [intmax_t i = -1;],
  [gcc_cv_header_inttypes_h=yes],
  gcc_cv_header_inttypes_h=no)])
AC_MSG_RESULT($gcc_cv_header_inttypes_h)
if test $gcc_cv_header_inttypes_h = yes; then
  AC_DEFINE(HAVE_INTTYPES_H)
fi

AC_CHECK_FUNCS(strtoul bsearch putenv popen bcopy bzero bcmp \
        index rindex strchr strrchr kill getrlimit setrlimit atoll atoq \
        sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
        fputs_unlocked getrusage valloc)

# Make sure wchar_t is available
#AC_CHECK_TYPE(wchar_t, unsigned int)

GCC_FUNC_VFPRINTF_DOPRNT
GCC_FUNC_PRINTF_PTR

case "${host}" in
*-*-uwin*)
  # Under some versions of uwin, vfork is notoriously buggy and the test 
  # can hang configure; on other versions, vfork exists just as a stub.
  # FIXME: This should be removed once vfork in uwin's runtime is fixed.
  ac_cv_func_vfork_works=no
  ;;
esac
AC_FUNC_VFORK
AC_FUNC_MMAP_ANYWHERE

GCC_NEED_DECLARATIONS(bcopy bzero bcmp \
        index rindex getenv atol sbrk abort atof getcwd getwd \
        strsignal putc_unlocked fputs_unlocked strstr environ)

GCC_NEED_DECLARATIONS(malloc realloc calloc free, [
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
])

GCC_NEED_DECLARATIONS(getrlimit setrlimit getrusage, [
#include <sys/types.h>
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
])

# mkdir takes a single argument on some systems. 
GCC_FUNC_MKDIR_TAKES_ONE_ARG

# File extensions
manext='.1'
objext='.o'
AC_SUBST(manext)
AC_SUBST(objext)

build_xm_file=
build_xm_defines=
build_install_headers_dir=install-headers-tar
build_exeext=
host_xm_file=
host_xm_defines=
host_xmake_file=
host_truncate_target=
host_exeext=

# Decode the host machine, then the target machine.
# For the host machine, we save the xm_file variable as host_xm_file;
# then we decode the target machine and forget everything else
# that came from the host machine.
for machine in $build $host $target; do

        out_file=
        xmake_file=
        tmake_file=
        extra_headers=
        extra_passes=
        extra_parts=
        extra_programs=
        extra_objs=
        extra_host_objs=
        extra_gcc_objs=
        xm_defines=
        float_format=
        # Set this to force installation and use of collect2.
        use_collect2=
        # Set this to override the default target model.
        target_cpu_default=
        # Set this to control how the header file directory is installed.
        install_headers_dir=install-headers-tar
        # Set this to a non-empty list of args to pass to cpp if the target
        # wants its .md file passed through cpp.
        md_cppflags=
        # Set this if directory names should be truncated to 14 characters.
        truncate_target=
        # Set this if gdb needs a dir command with `dirname $out_file`
        gdb_needs_out_file_path=
        # Set this if the build machine requires executables to have a
        # file name suffix.
        exeext=
        # Set this to control which thread package will be used.
        thread_file=
        # Reinitialize these from the flag values every loop pass, since some
        # configure entries modify them.
        gas="$gas_flag"
        gnu_ld="$gnu_ld_flag"
        enable_threads=$enable_threads_flag

        # Set default cpu_type, tm_file, tm_p_file and xm_file so it can be
        # updated in each machine entry.
        tm_p_file=
        cpu_type=`echo $machine | sed 's/-.*$//'`
        case $machine in
        alpha*-*-*)
                cpu_type=alpha
                ;;
        arm*-*-*)
                cpu_type=arm
                ;;
        c*-convex-*)
                cpu_type=convex
                ;;
changequote(,)dnl
        i[34567]86-*-*)
changequote([,])dnl
                cpu_type=i386
                ;;
        hppa*-*-*)
                cpu_type=pa
                ;;
        m68000-*-*)
                cpu_type=m68k
                ;;
        mips*-*-*)
                cpu_type=mips
                ;;
        pj*-*-*)
                cpu_type=pj
                ;;
        powerpc*-*-*)
                cpu_type=rs6000
                ;;
        pyramid-*-*)
                cpu_type=pyr
                ;;
        sparc*-*-*)
                cpu_type=sparc
                ;;
        esac

        tm_file=${cpu_type}/${cpu_type}.h
        xm_file=${cpu_type}/xm-${cpu_type}.h
        if test -f ${srcdir}/config/${cpu_type}/${cpu_type}-protos.h;
        then
                tm_p_file=${cpu_type}/${cpu_type}-protos.h;
        fi
        # On a.out targets, we need to use collect2.
        case $machine in
        *-*-*aout*)
                use_collect2=yes
                ;;
        esac    

        # Common parts for linux-gnu and openbsd systems
        case $machine in
        *-*-linux-gnu*)
                xm_defines="HAVE_ATEXIT POSIX BSTRING"
                ;;
        *-*-openbsd*)
                tm_file=${cpu_type}/openbsd.h
                tmake_file="t-libc-ok t-openbsd"
                # avoid surprises, always provide an xm-openbsd file 
                xm_file=${cpu_type}/xm-openbsd.h
                # don't depend on processor x-fragments as well
                xmake_file=none
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                        tmake_file="${tmake_file} t-openbsd-thread"
                fi
                ;;
        esac

        case $machine in
        # Support site-specific machine types.
        *local*)
                cpu_type=`echo $machine | sed -e 's/-.*//'`
                rest=`echo $machine | sed -e "s/$cpu_type-//"`
                xm_file=${cpu_type}/xm-$rest.h
                tm_file=${cpu_type}/$rest.h
                if test -f $srcdir/config/${cpu_type}/x-$rest; \
                then xmake_file=${cpu_type}/x-$rest; \
                else true; \
                fi
                if test -f $srcdir/config/${cpu_type}/t-$rest; \
                then tmake_file=${cpu_type}/t-$rest; \
                else true; \
                fi
                ;;
        1750a-*-*)
                ;;
        a29k-*-bsd* | a29k-*-sym1*)
                tm_file="${tm_file} a29k/unix.h"
                xm_defines=USG
                xmake_file=a29k/x-unix
                use_collect2=yes
                ;;
        a29k-*-udi | a29k-*-coff)
                tm_file="${tm_file} dbxcoff.h a29k/udi.h"
                tmake_file=a29k/t-a29kbare
                ;;
        a29k-wrs-vxworks*)
                tm_file="${tm_file} dbxcoff.h a29k/udi.h a29k/vx29k.h"
                tmake_file=a29k/t-vx29k
                extra_parts="crtbegin.o crtend.o"
                thread_file='vxworks'
                ;;
        a29k-*-*)                       # Default a29k environment.
                use_collect2=yes
                ;;
        alpha-*-interix)
                tm_file="${tm_file} alpha/alpha32.h interix.h alpha/alpha-interix.h"

                # GAS + IEEE_CONFORMANT+IEEE (no inexact);
                #target_cpu_default="MASK_GAS|MASK_IEEE_CONFORMANT|MASK_IEEE"

                # GAS + IEEE_CONFORMANT
                target_cpu_default="MASK_GAS|MASK_IEEE_CONFORMANT"

                xm_file="alpha/xm-alpha-interix.h xm-interix.h"
                xmake_file="x-interix alpha/t-pe"
                tmake_file="alpha/t-interix alpha/t-ieee"
                if test x$enable_threads = xyes ; then
                        thread_file='posix'
                fi
                if test x$stabs = xyes ; then
                        tm_file="${tm_file} dbxcoff.h"
                fi
                #prefix='$$INTERIX_ROOT'/usr/contrib
                #local_prefix='$$INTERIX_ROOT'/usr/contrib
                ;;
        alpha*-*-linux-gnuecoff*)
                tm_file="${tm_file} alpha/linux-ecoff.h alpha/linux.h"
                target_cpu_default="MASK_GAS"
                tmake_file="alpha/t-ieee"
                gas=no
                xmake_file=none
                gas=yes gnu_ld=yes
                ;;
        alpha*-*-linux-gnulibc1*)
                tm_file="${tm_file} alpha/elf.h alpha/linux.h alpha/linux-elf.h"
                target_cpu_default="MASK_GAS"
                tmake_file="t-linux t-linux-gnulibc1 alpha/t-linux alpha/t-crtbe alpha/t-ieee"
                extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"
                xmake_file=none
                gas=yes gnu_ld=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        alpha*-*-linux-gnu*)
                tm_file="${tm_file} alpha/elf.h alpha/linux.h alpha/linux-elf.h"
                target_cpu_default="MASK_GAS"
                tmake_file="t-linux alpha/t-linux alpha/t-crtbe alpha/t-ieee"
                extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"
                xmake_file=none
                gas=yes gnu_ld=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        alpha*-*-netbsd*)
                tm_file="${tm_file} alpha/elf.h alpha/netbsd.h alpha/netbsd-elf.h"
                target_cpu_default="MASK_GAS"
                tmake_file="alpha/t-crtbe alpha/t-ieee"
                extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"
                xmake_file=none
                gas=yes gnu_ld=yes
                ;;

        alpha*-*-openbsd*)
                # default x-alpha is only appropriate for dec-osf.
                target_cpu_default="MASK_GAS"
                tmake_file="alpha/t-ieee"
                ;;
                
        alpha*-dec-osf*)
                if test x$stabs = xyes
                then
                        tm_file="${tm_file} dbx.h"
                fi
                if test x$gas != xyes
                then
                        extra_passes="mips-tfile mips-tdump"
                fi
                use_collect2=yes
                tmake_file="alpha/t-ieee"
                case $machine in
                  *-*-osf1*)
                    tm_file="${tm_file} alpha/osf.h alpha/osf12.h alpha/osf2or3.h"
                    ;;
changequote(,)dnl
                  *-*-osf[23]*)
changequote([,])dnl
                    tm_file="${tm_file} alpha/osf.h alpha/osf2or3.h"
                    ;;
                  *-*-osf4*)
                    tm_file="${tm_file} alpha/osf.h"
                    # Some versions of OSF4 (specifically X4.0-9 296.7) have
                    # a broken tar, so we use cpio instead.
                    install_headers_dir=install-headers-cpio
                    ;;
                  *-*-osf5*)
                    tm_file="${tm_file} alpha/osf.h alpha/osf5.h"
                    ;;
                esac
                case $machine in
changequote(,)dnl
                  *-*-osf4.0[b-z] | *-*-osf4.[1-9]* | *-*-osf5*)
changequote([,])dnl
                    target_cpu_default=MASK_SUPPORT_ARCH
                    ;;
                esac
                ;;
        alpha*-*-vxworks*)
                tm_file="${tm_file} dbx.h alpha/vxworks.h"
                tmake_file="alpha/t-ieee"
                if [ x$gas != xyes ]
                then
                        extra_passes="mips-tfile mips-tdump"
                fi
                use_collect2=yes
                thread_file='vxworks'
                ;;
        alpha*-*-winnt*)
                tm_file="${tm_file} alpha/alpha32.h alpha/win-nt.h winnt/win-nt.h"
                xm_file="${xm_file} config/winnt/xm-winnt.h alpha/xm-winnt.h"
                tmake_file="t-libc-ok alpha/t-ieee"
                xmake_file=winnt/x-winnt
                extra_host_objs=oldnames.o
                extra_gcc_objs="spawnv.o oldnames.o"
                if test x$gnu_ld != xyes
                then
                        extra_programs=ld.exe
                fi
                if test x$enable_threads = xyes; then
                        thread_file='win32'
                fi
                ;;
        alpha*-dec-vms*)
                tm_file=alpha/vms.h
                xm_file="${xm_file} alpha/xm-vms.h"
                tmake_file="alpha/t-vms alpha/t-ieee"
                ;;
        arc-*-elf*)
                extra_parts="crtinit.o crtfini.o"
                ;;
        arm-*-coff* | armel-*-coff*)
                tm_file=arm/coff.h
                tmake_file=arm/t-bare
                ;;
        arm-*-vxworks*)
                tm_file=arm/vxarm.h
                tmake_file=arm/t-bare
                thread_file='vxworks'
                ;;
changequote(,)dnl
        arm-*-riscix1.[01]*)            # Acorn RISC machine (early versions)
changequote([,])dnl
                tm_file=arm/riscix1-1.h
                use_collect2=yes
                ;;
        arm-*-riscix*)                  # Acorn RISC machine
                if test x$gas = xyes
                then
                    tm_file=arm/rix-gas.h
                else
                    tm_file=arm/riscix.h
                fi
                xmake_file=arm/x-riscix
                tmake_file=arm/t-riscix
                use_collect2=yes
                ;;
        arm-semi-aout | armel-semi-aout)
                tm_file=arm/semi.h
                tmake_file=arm/t-semi
                ;;
        arm-semi-aof | armel-semi-aof)
                tm_file=arm/semiaof.h
                tmake_file=arm/t-semiaof
                ;;
        arm*-*-netbsd*)
                tm_file=arm/netbsd.h
                tmake_file="t-netbsd arm/t-netbsd"
                use_collect2=yes
                ;;
        arm*-*-linux-gnuaout*)          # ARM GNU/Linux with a.out
                cpu_type=arm
                xmake_file=x-linux
                tm_file=arm/linux-aout.h
                tmake_file=arm/t-linux
                gnu_ld=yes
                ;;
        arm*-*-linux-gnuoldld*)         # ARM GNU/Linux with old ELF linker
                xm_file=arm/xm-linux.h
                xmake_file=x-linux
                tm_file="arm/linux-oldld.h arm/linux-elf.h"
                case $machine in
                armv2*-*-*)
                        tm_file="arm/linux-elf26.h $tm_file"
                        ;;
                esac
                tmake_file="t-linux arm/t-linux"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                case x${enable_threads} in
                x | xyes | xpthreads | xposix)
                        thread_file='posix'
                        ;;
                esac
                ;;
        arm*-*-linux-gnu*)              # ARM GNU/Linux with ELF
                xm_file=arm/xm-linux.h
                xmake_file=x-linux
                tm_file="arm/linux-elf.h"
                case $machine in
                armv2*-*-*)
                        tm_file="arm/linux-elf26.h $tm_file"
                        ;;
                esac
                tmake_file="t-linux arm/t-linux"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                case x${enable_threads} in
                x | xyes | xpthreads | xposix)
                        thread_file='posix'
                        ;;
                esac
                ;;
        arm*-*-uclinux*)                # ARM ucLinux
                tm_file=arm/uclinux-elf.h
                tmake_file=arm/t-arm-elf
                ;;
        arm*-*-aout)
                tm_file=arm/aout.h
                tmake_file=arm/t-bare
                ;;
        arm*-*-ecos-elf)
                tm_file=arm/ecos-elf.h
                tmake_file=arm/t-elf
                ;; 
        arm*-*-elf)
                tm_file=arm/unknown-elf.h
                tmake_file=arm/t-arm-elf
                ;;
        arm*-*-conix*)
                tm_file=arm/conix-elf.h
                tmake_file=arm/t-arm-elf
                ;;
        arm*-*-oabi)
                tm_file=arm/unknown-elf-oabi.h
                tmake_file=arm/t-arm-elf
                ;;
        arm-*-pe*)
                tm_file=arm/pe.h
                tmake_file=arm/t-pe
                extra_objs=pe.o
                ;;
        avr-*-*)
                ;;
        c1-convex-*)                    # Convex C1
                target_cpu_default=1
                use_collect2=yes
                ;;
        c2-convex-*)                    # Convex C2
                target_cpu_default=2
                use_collect2=yes
                ;;
        c32-convex-*)
                target_cpu_default=4
                use_collect2=yes
                ;;
        c34-convex-*)
                target_cpu_default=8
                use_collect2=yes
                ;;
        c38-convex-*)
                target_cpu_default=16           
                use_collect2=yes
                ;;
        c4x-*)
                cpu_type=c4x
                tmake_file=c4x/t-c4x
                ;;
        clipper-intergraph-clix*)
                tm_file="${tm_file} svr3.h clipper/clix.h"
                xm_file=clipper/xm-clix.h
                xmake_file=clipper/x-clix
                extra_headers=va-clipper.h
                extra_parts="crtbegin.o crtend.o"
                install_headers_dir=install-headers-cpio
                ;;
        dsp16xx-*)
                ;;
        elxsi-elxsi-*)
                use_collect2=yes
                ;;
        fr30-*-elf)
                tm_file="fr30/fr30.h"
                tmake_file=fr30/t-fr30
                extra_parts="crti.o crtn.o crtbegin.o crtend.o"
                ;;
# This hasn't been upgraded to GCC 2.
#       fx80-alliant-*)                 # Alliant FX/80
#               ;;
        h8300-*-*)
                float_format=i32
                ;;
        hppa*-*-linux*)
                target_cpu_default="(MASK_PA_11 | MASK_GAS | MASK_JUMP_IN_DELAY)"
                tm_file="${tm_file} pa/elf.h linux.h pa/pa-linux.h"
                tmake_file="t-linux pa/t-linux"
                extra_parts="crtbegin.o crtend.o"
                xmake_file=none
                gas=yes gnu_ld=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        hppa*-*-openbsd*)
                target_cpu_default="MASK_PA_11"
                tmake_file=pa/t-openbsd
                ;;
        hppa1.1-*-pro*)
                target_cpu_default="(MASK_JUMP_IN_DELAY | MASK_PORTABLE_RUNTIME | MASK_GAS | MASK_NO_SPACE_REGS | MASK_SOFT_FLOAT)"
                tm_file="${tm_file} pa/pa32-regs.h elfos.h pa/elf.h pa/pa-pro-end.h libgloss.h"
                xm_file=pa/xm-papro.h
                tmake_file=pa/t-pro
                ;;
        hppa1.1-*-osf*)
                target_cpu_default="MASK_PA_11"
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-osf.h"
                use_collect2=yes
                ;;
        hppa1.1-*-rtems*)
                target_cpu_default="(MASK_JUMP_IN_DELAY | MASK_PORTABLE_RUNTIME | MASK_GAS | MASK_NO_SPACE_REGS | MASK_SOFT_FLOAT)"
                tm_file="${tm_file} pa/pa32-regs.h elfos.h pa/elf.h pa/pa-pro-end.h libgloss.h pa/rtems.h"
                xm_file=pa/xm-papro.h
                tmake_file=pa/t-pro
                ;;
        hppa1.0-*-osf*)
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-osf.h"
                use_collect2=yes
                ;;
        hppa1.1-*-bsd*)
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h"
                target_cpu_default="MASK_PA_11"
                use_collect2=yes
                ;;
        hppa1.0-*-bsd*)
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h"
                use_collect2=yes
                ;;
        hppa1.0-*-hpux7*)
                tm_file="pa/pa-oldas.h ${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux7.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/gas.h"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
changequote(,)dnl
        hppa1.0-*-hpux8.0[0-2]*)
changequote([,])dnl
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                else
                        tm_file="pa/pa-oldas.h ${tm_file}"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
changequote(,)dnl
        hppa1.1-*-hpux8.0[0-2]*)
changequote([,])dnl
                target_cpu_default="MASK_PA_11"
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                else
                        tm_file="pa/pa-oldas.h ${tm_file}"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.1-*-hpux8*)
                target_cpu_default="MASK_PA_11"
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.0-*-hpux8*)
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.1-*-hpux10* | hppa2*-*-hpux10*)
                target_cpu_default="MASK_PA_11"
                tm_file="${tm_file} pa/pa32-regs.h pa/long_double.h pa/som.h pa/pa-hpux.h pa/pa-hpux10.h"
                float_format=i128
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                tmake_file=pa/t-pa
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                if test x$enable_threads = x; then
                    enable_threads=$have_pthread_h
                fi
                if test x$enable_threads = xyes; then
                        thread_file='dce'
                        tmake_file="${tmake_file} pa/t-dce-thr"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.0-*-hpux10*)
                tm_file="${tm_file} pa/pa32-regs.h pa/long_double.h pa/som.h pa/pa-hpux.h pa/pa-hpux10.h"
                float_format=i128
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                tmake_file=pa/t-pa
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                if test x$enable_threads = x; then
                    enable_threads=$have_pthread_h
                fi
                if test x$enable_threads = xyes; then
                        thread_file='dce'
                        tmake_file="${tmake_file} pa/t-dce-thr"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.1-*-hpux11* | hppa2*-*-hpux11*)
                target_cpu_default="MASK_PA_11"
                tm_file="${tm_file} pa/pa32-regs.h pa/long_double.h pa/som.h pa/pa-hpux.h pa/pa-hpux11.h"
                float_format=i128
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                tmake_file=pa/t-pa
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
#               if test x$enable_threads = x; then
#                   enable_threads=$have_pthread_h
#               fi
#               if test x$enable_threads = xyes; then
#                       thread_file='dce'
#                       tmake_file="${tmake_file} pa/t-dce-thr"
#               fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.0-*-hpux11*)
                tm_file="${tm_file} pa/pa32-regs.h pa/long_double.h pa/som.h pa/pa-hpux.h pa/pa-hpux11.h"
                float_format=i128
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
#               if test x$enable_threads = x; then
#                   enable_threads=$have_pthread_h
#               fi
#               if test x$enable_threads = xyes; then
#                       thread_file='dce'
#                       tmake_file="${tmake_file} pa/t-dce-thr"
#               fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.1-*-hpux* | hppa2*-*-hpux*)
                target_cpu_default="MASK_PA_11"
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h pa/pa-hpux9.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.0-*-hpux*)
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h pa/pa-hpux9.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.1-*-hiux* | hppa2*-*-hiux*)
                target_cpu_default="MASK_PA_11"
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h pa/pa-hiux.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa1.0-*-hiux*)
                tm_file="${tm_file} pa/pa32-regs.h pa/som.h pa/pa-hpux.h pa/pa-hiux.h"
                xm_file=pa/xm-pahpux.h
                xmake_file=pa/x-pa-hpux
                if test x$gas = xyes
                then
                        tm_file="${tm_file} pa/pa-gas.h"
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                ;;
        hppa*-*-lites*)
                tm_file="${tm_file} pa/pa32-regs.h elfos.h pa/elf.h"
                target_cpu_default="MASK_PA_11"
                use_collect2=yes
                ;;
        hppa*-*-mpeix*)
                tm_file="${tm_file} pa/pa-mpeix.h"
                xm_file=pa/xm-pampeix.h 
                xmake_file=pa/x-pa-mpeix 
                echo "You must use gas. Assuming it is already installed." 
                install_headers_dir=install-headers-tar
                use_collect2=yes 
                ;; 
        i370-*-opened*)                  # IBM 360/370/390 Architecture
                xm_file=i370/xm-oe.h
                tm_file=i370/oe.h
                xmake_file=i370/x-oe
                tmake_file=i370/t-oe
                ;;
        i370-*-mvs*)
                xm_file=i370/xm-mvs.h
                tm_file=i370/mvs.h
                tmake_file=i370/t-mvs
                ;;
        i370-*-linux*)
                xm_file="xm-linux.h i370/xm-linux.h"
                xmake_file=x-linux
                tm_file="i370/linux.h ${tm_file}"
                tmake_file="t-linux i370/t-linux"
                # broken_install=yes
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                # extra_parts="crtbegin.o crtend.o"
                gnu_ld=yes
                gas=yes
                elf=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
changequote(,)dnl
        i[34567]86-*-elf*)
changequote([,])dnl
                xm_file="${xm_file} xm-svr4.h i386/xm-sysv4.h"
                tm_file=i386/i386elf.h
                tmake_file=i386/t-i386elf
                xmake_file=x-svr4
                ;;
changequote(,)dnl
        i[34567]86-ibm-aix*)            # IBM PS/2 running AIX
changequote([,])dnl
                if test x$gas = xyes
                then
                        tm_file=i386/aix386.h
                        extra_parts="crtbegin.o crtend.o"
                        tmake_file=i386/t-crtstuff
                else
                        tm_file=i386/aix386ng.h
                        use_collect2=yes
                fi
                xm_file="xm-alloca.h i386/xm-aix.h ${xm_file}"
                xm_defines=USG
                xmake_file=i386/x-aix
                ;;
changequote(,)dnl
        i[34567]86-ncr-sysv4*)          # NCR 3000 - ix86 running system V.4
changequote([,])dnl
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG POSIX SMALL_ARG_MAX"
                xmake_file=i386/x-ncr3000
                if test x$stabs = xyes -a x$gas = xyes
                then
                        tm_file=i386/sysv4gdb.h
                else
                        tm_file=i386/sysv4.h
                fi
                extra_parts="crtbegin.o crtend.o"
                tmake_file=i386/t-crtpic
                ;;
changequote(,)dnl
        i[34567]86-next-*)
changequote([,])dnl
                tm_file=i386/next.h
                xm_file=i386/xm-next.h
                tmake_file=i386/t-next
                xmake_file=i386/x-next
                extra_objs=nextstep.o
                extra_parts="crtbegin.o crtend.o"
                if test x$enable_threads = xyes; then
                        thread_file='mach'
                fi
                ;;
changequote(,)dnl
        i[34567]86-sequent-bsd*)                # 80386 from Sequent
changequote([,])dnl
                use_collect2=yes
                if test x$gas = xyes
                then
                        tm_file=i386/seq-gas.h
                else
                        tm_file=i386/sequent.h
                fi
                ;;
changequote(,)dnl
        i[34567]86-sequent-ptx1*)
changequote([,])dnl
                xm_defines="USG SVR3"
                xmake_file=i386/x-sysv3
                tm_file=i386/seq-sysv3.h
                tmake_file=i386/t-crtstuff
                extra_parts="crtbegin.o crtend.o"
                install_headers_dir=install-headers-cpio
                ;;
changequote(,)dnl
        i[34567]86-sequent-ptx2* | i[34567]86-sequent-sysv3*)
changequote([,])dnl
                xm_defines="USG SVR3"
                xmake_file=i386/x-sysv3
                tm_file=i386/seq2-sysv3.h
                tmake_file=i386/t-crtstuff
                extra_parts="crtbegin.o crtend.o"
                install_headers_dir=install-headers-cpio
                ;;
changequote(,)dnl
        i[34567]86-sequent-ptx4* | i[34567]86-sequent-sysv4*)
changequote([,])dnl
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG POSIX SMALL_ARG_MAX"
                xmake_file=x-svr4
                tm_file=i386/ptx4-i.h
                tmake_file=t-svr4
                extra_parts="crtbegin.o crtend.o"
                install_headers_dir=install-headers-cpio
                ;;
        i386-sun-sunos*)                # Sun i386 roadrunner
                xm_defines=USG
                tm_file=i386/sun.h
                use_collect2=yes
                ;;
changequote(,)dnl
        i[34567]86-wrs-vxworks*)
changequote([,])dnl
                tm_file=i386/vxi386.h
                tmake_file=i386/t-i386bare
                thread_file='vxworks'
                ;;
changequote(,)dnl
        i[34567]86-*-aout*)
changequote([,])dnl
                tm_file=i386/i386-aout.h
                tmake_file=i386/t-i386bare
                ;;
changequote(,)dnl
        i[34567]86-*-beospe*)
changequote([,])dnl
                xm_file=i386/xm-beos.h
                xm_defines="USE_C_ALLOCA"
                tmake_file=i386/t-beos
                tm_file=i386/beos-pe.h
                xmake_file=i386/x-beos
                extra_objs=winnt.o
                ;;
changequote(,)dnl
        i[34567]86-*-beoself* | i[34567]86-*-beos*)
changequote([,])dnl
                xm_file=i386/xm-beos.h
                tmake_file='i386/t-beos i386/t-crtpic'
                tm_file=i386/beos-elf.h
                xmake_file=i386/x-beos
                extra_objs=winnt.o
                extra_parts='crtbegin.o crtend.o'
                ;;
changequote(,)dnl
        i[34567]86-*-bsdi* | i[34567]86-*-bsd386*)
changequote([,])dnl
                tm_file=i386/bsd386.h
#               tmake_file=t-libc-ok
                ;;
changequote(,)dnl
        i[34567]86-*-bsd*)
changequote([,])dnl
                tm_file=i386/386bsd.h
#               tmake_file=t-libc-ok
# Next line turned off because both 386BSD and BSD/386 use GNU ld.
#               use_collect2=yes
                ;;
changequote(,)dnl
        i[34567]86-*-freebsdelf*)
changequote([,])dnl
                tm_file="i386/i386.h i386/att.h svr4.h freebsd.h i386/freebsd-elf.h i386/perform.h"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                tmake_file=t-freebsd
                gas=yes
                gnu_ld=yes
                stabs=yes
                case x${enable_threads} in
                xyes | xpthreads | xposix)
                        thread_file='posix'
                        tmake_file="${tmake_file} t-freebsd-thread"
                        ;;
                esac
                ;;
changequote(,)dnl
        i[34567]86-*-freebsd*)
changequote([,])dnl
                tm_file="i386/freebsd.h i386/perform.h"
                tmake_file=t-freebsd
                ;;
changequote(,)dnl
        i[34567]86-*-netbsd*)
changequote([,])dnl
                tm_file=i386/netbsd.h
                tmake_file=t-netbsd
                use_collect2=yes
                ;;
changequote(,)dnl
        i[34567]86-*-openbsd*)
changequote([,])dnl
                # we need collect2 until our bug is fixed...
                use_collect2=yes
                ;;
changequote(,)dnl
        i[34567]86-*-coff*)
changequote([,])dnl
                tm_file=i386/i386-coff.h
                tmake_file=i386/t-i386bare
                ;;
changequote(,)dnl
        i[34567]86-*-isc*)              # 80386 running ISC system
changequote([,])dnl
                xm_file="${xm_file} i386/xm-isc.h"
                xm_defines="USG SVR3"
                case $machine in
changequote(,)dnl
                  i[34567]86-*-isc[34]*)
changequote([,])dnl
                    xmake_file=i386/x-isc3
                    ;;
                  *)
                    xmake_file=i386/x-isc
                    ;;
                esac
                if test x$gas = xyes -a x$stabs = xyes
                then
                        tm_file=i386/iscdbx.h
                        tmake_file=i386/t-svr3dbx
                        extra_parts="svr3.ifile svr3z.ifile"
                else
                        tm_file=i386/isccoff.h
                        tmake_file=i386/t-crtstuff
                        extra_parts="crtbegin.o crtend.o"
                fi
                install_headers_dir=install-headers-cpio
                ;;
changequote(,)dnl
        i[34567]86-*-linux-gnuoldld*)   # Intel 80386's running GNU/Linux
changequote([,])dnl                     # with a.out format using
                                        # pre BFD linkers
                xmake_file=x-linux-aout
                tmake_file="t-linux-aout i386/t-crtstuff"
                tm_file=i386/linux-oldld.h
                gnu_ld=yes
                float_format=i386
                ;;
changequote(,)dnl
        i[34567]86-*-linux-gnuaout*)    # Intel 80386's running GNU/Linux
changequote([,])dnl                     # with a.out format
                xmake_file=x-linux-aout
                tmake_file="t-linux-aout i386/t-crtstuff"
                tm_file=i386/linux-aout.h
                gnu_ld=yes
                float_format=i386
                ;;
changequote(,)dnl
        i[34567]86-*-linux-gnulibc1)    # Intel 80386's running GNU/Linux
changequote([,])dnl                     # with ELF format using the
                                        # GNU/Linux C library 5
                xmake_file=x-linux      
                tm_file=i386/linux.h    
                tmake_file="t-linux t-linux-gnulibc1 i386/t-crtstuff"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                float_format=i386
                if test x$enable_threads = xyes; then
                        thread_file='single'
                fi
                ;;
changequote(,)dnl
        i[34567]86-*-linux-gnu*)        # Intel 80386's running GNU/Linux
changequote([,])dnl                     # with ELF format using glibc 2
                                        # aka GNU/Linux C library 6
                xmake_file=x-linux
                tm_file=i386/linux.h
                tmake_file="t-linux i386/t-crtstuff"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                float_format=i386
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
changequote(,)dnl
        i[34567]86-*-gnu*)
                float_format=i386
changequote([,])dnl
                ;;
changequote(,)dnl
        i[34567]86-go32-msdos | i[34567]86-*-go32*)
changequote([,])dnl
                echo "GO32/DJGPP V1.X is no longer supported. Use *-pc-msdosdjgpp for DJGPP V2.X instead."
                exit 1
                ;;
changequote(,)dnl
        i[34567]86-pc-msdosdjgpp*)
changequote([,])dnl
                xm_file=i386/xm-djgpp.h
                tm_file=i386/djgpp.h
                tmake_file=i386/t-djgpp
                xmake_file=i386/x-djgpp
                gnu_ld=yes
                gas=yes
                exeext=.exe
                case $host in *pc-msdosdjgpp*)
                        target_alias=djgpp
                        ;;
                esac
                ;;
changequote(,)dnl
        i[34567]86-moss-msdos* | i[34567]86-*-moss*)
changequote([,])dnl
                tm_file=i386/moss.h
                tmake_file=t-libc-ok
                gnu_ld=yes
                gas=yes
                ;;
changequote(,)dnl
        i[34567]86-*-lynxos*)
changequote([,])dnl
                if test x$gas = xyes
                then
                        tm_file=i386/lynx.h
                else
                        tm_file=i386/lynx-ng.h
                fi
                xm_file=i386/xm-lynx.h
                tmake_file=i386/t-i386bare
                xmake_file=x-lynx
                ;;
changequote(,)dnl
        i[34567]86-*-mach*)
changequote([,])dnl
                tm_file=i386/mach.h
#               tmake_file=t-libc-ok
                use_collect2=yes
                ;;
changequote(,)dnl
        i[34567]86-*-osfrose*)          # 386 using OSF/rose
changequote([,])dnl
                if test x$elf = xyes
                then
                        tm_file=i386/osfelf.h
                        use_collect2=
                else
                        tm_file=i386/osfrose.h
                        use_collect2=yes
                fi
                xm_file="i386/xm-osf.h ${xm_file}"
                xmake_file=i386/x-osfrose
                tmake_file=i386/t-osf
                extra_objs=halfpic.o
                ;;
changequote(,)dnl
        i[34567]86-go32-rtems*)
changequote([,])dnl
                cpu_type=i386
                xm_file=i386/xm-go32.h
                tm_file=i386/go32-rtems.h
                tmake_file="i386/t-go32 t-rtems"
                ;;
changequote(,)dnl
        i[34567]86-*-rtemscoff*)
changequote([,])dnl
                cpu_type=i386
                tm_file=i386/rtems.h
                tmake_file="i386/t-i386bare t-rtems"
                ;;
changequote(,)dnl
        i[34567]86-*-rtems*|i[34567]86-*-rtemself*)
changequote([,])dnl
                cpu_type=i386
                tm_file=i386/rtemself.h
                extra_parts="crtbegin.o crtend.o crti.o crtn.o"
                tmake_file="i386/t-rtems-i386 i386/t-crtstuff t-rtems"
                ;;
changequote(,)dnl
        i[34567]86-*-sco3.2v5*) # 80386 running SCO Open Server 5
changequote([,])dnl
                xm_file="xm-alloca.h ${xm_file} i386/xm-sco5.h"
                xm_defines="USG SVR3"
                xmake_file=i386/x-sco5
                install_headers_dir=install-headers-cpio
                tm_file=i386/sco5.h
                if test x$gas = xyes
                then
                        tm_file="i386/sco5gas.h ${tm_file}"
                        tmake_file=i386/t-sco5gas
                else
                        tmake_file=i386/t-sco5
                fi
                extra_parts="crti.o crtbegin.o crtend.o crtbeginS.o crtendS.o"
                ;;
changequote(,)dnl
        i[34567]86-*-sco3.2v4*)         # 80386 running SCO 3.2v4 system
changequote([,])dnl
                xm_file="${xm_file} i386/xm-sco.h"
                xm_defines="USG SVR3 BROKEN_LDEXP SMALL_ARG_MAX"
                xmake_file=i386/x-sco4
                install_headers_dir=install-headers-cpio
                if test x$stabs = xyes
                then
                        tm_file=i386/sco4dbx.h
                        tmake_file=i386/t-svr3dbx
                        extra_parts="svr3.ifile svr3z.rfile"
                else
                        tm_file=i386/sco4.h
                        tmake_file=i386/t-crtstuff
                        extra_parts="crtbegin.o crtend.o"
                fi
                # The default EAFS filesystem supports long file names.
                # Truncating the target makes $host != $target which
                # makes gcc think it is doing a cross-compile.
                # truncate_target=yes
                ;;
changequote(,)dnl
        i[34567]86-*-sco*)              # 80386 running SCO system
changequote([,])dnl
                xm_file=i386/xm-sco.h
                xmake_file=i386/x-sco
                install_headers_dir=install-headers-cpio
                if test x$stabs = xyes
                then
                        tm_file=i386/scodbx.h
                        tmake_file=i386/t-svr3dbx
                        extra_parts="svr3.ifile svr3z.rfile"
                else
                        tm_file=i386/sco.h
                        extra_parts="crtbegin.o crtend.o"
                        tmake_file=i386/t-crtstuff
                fi
                truncate_target=yes
                ;;
changequote(,)dnl
        i[34567]86-*-solaris2*)
changequote([,])dnl
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG POSIX SMALL_ARG_MAX"
                tm_file=i386/sol2.h
                if test x$gas = xyes; then
                        # Only needed if gas does not support -s
                        tm_file="i386/sol2gas.h ${tm_file}"
                fi
                tmake_file=i386/t-sol2
                extra_parts="crt1.o crti.o crtn.o gcrt1.o gmon.o crtbegin.o crtend.o"
                xmake_file=x-svr4
                if test x${enable_threads} = x; then
                    enable_threads=$have_pthread_h
                    if test x${enable_threads} = x; then
                        enable_threads=$have_thread_h
                    fi
                fi
                if test x${enable_threads} = xyes; then
                    if test x${have_pthread_h} = xyes; then
                        thread_file='posix'
                    else
                        thread_file='solaris'
                    fi
                fi
                ;;
changequote(,)dnl
       i[34567]86-*-sysv5*)           # Intel x86 on System V Release 5
changequote([,])dnl
               xm_file="xm-alloca.h ${xm_file}"
               xm_defines="USG POSIX"
               tm_file=i386/sysv5.h
               if test x$stabs = xyes
               then
                       tm_file="${tm_file} dbx.h"
               fi
               tmake_file=i386/t-crtpic
               xmake_file=x-svr4
               extra_parts="crtbegin.o crtend.o"
               if test x$enable_threads = xyes; then
                       thread_file='posix'
               fi
               ;;
changequote(,)dnl
        i[34567]86-*-sysv4*)            # Intel 80386's running system V.4
changequote([,])dnl
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG POSIX SMALL_ARG_MAX"
                tm_file=i386/sysv4.h
                if test x$stabs = xyes
                then
                        tm_file="${tm_file} dbx.h"
                fi
                tmake_file=i386/t-crtpic
                xmake_file=x-svr4
                extra_parts="crtbegin.o crtend.o"
                ;;
changequote(,)dnl
        i[34567]86-*-udk*)      # Intel x86 on SCO UW/OSR5 Dev Kit
changequote([,])dnl
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG POSIX"
                tm_file=i386/udk.h
                tmake_file="i386/t-crtpic i386/t-udk"
                xmake_file=x-svr4
                extra_parts="crtbegin.o crtend.o"
                install_headers_dir=install-headers-cpio
                ;;
changequote(,)dnl
        i[34567]86-*-osf1*)             # Intel 80386's running OSF/1 1.3+
changequote([,])dnl
                cpu_type=i386
                xm_file="${xm_file} xm-svr4.h i386/xm-sysv4.h i386/xm-osf1elf.h"
                xm_defines="USE_C_ALLOCA SMALL_ARG_MAX"
                if test x$stabs = xyes
                then
                        tm_file=i386/osf1elfgdb.h
                else
                        tm_file=i386/osf1elf.h
                fi
                tmake_file=i386/t-osf1elf
                xmake_file=i386/x-osf1elf
                extra_parts="crti.o crtn.o crtbegin.o crtend.o"
                ;;
changequote(,)dnl
        i[34567]86-*-sysv*)             # Intel 80386's running system V
changequote([,])dnl
                xm_defines="USG SVR3"
                xmake_file=i386/x-sysv3
                if test x$gas = xyes
                then
                        if test x$stabs = xyes
                        then
                                tm_file=i386/svr3dbx.h
                                tmake_file=i386/t-svr3dbx
                                extra_parts="svr3.ifile svr3z.rfile"
                        else
                                tm_file=i386/svr3gas.h
                                extra_parts="crtbegin.o crtend.o"
                                tmake_file=i386/t-crtstuff
                        fi
                else
                        tm_file=i386/sysv3.h
                        extra_parts="crtbegin.o crtend.o"
                        tmake_file=i386/t-crtstuff
                fi
                ;;
        i386-*-vsta)                    # Intel 80386's running VSTa kernel
                xm_file="${xm_file} i386/xm-vsta.h"
                tm_file=i386/vsta.h
                tmake_file=i386/t-vsta
                xmake_file=i386/x-vsta
                ;;
changequote(,)dnl
        i[34567]86-*-win32)
changequote([,])dnl
                xm_file="${xm_file} i386/xm-cygwin.h"
                tmake_file=i386/t-cygwin
                tm_file=i386/win32.h
                xmake_file=i386/x-cygwin
                extra_objs=winnt.o
                if test x$enable_threads = xyes; then
                        thread_file='win32'
                fi
                exeext=.exe
                ;;
changequote(,)dnl
        i[34567]86-*-pe | i[34567]86-*-cygwin*)
changequote([,])dnl
                xm_file="${xm_file} i386/xm-cygwin.h"
                tmake_file=i386/t-cygwin
                tm_file=i386/cygwin.h
                xmake_file=i386/x-cygwin
                extra_objs=winnt.o
                if test x$enable_threads = xyes; then
                        thread_file='win32'
                fi
                exeext=.exe
                ;;
changequote(,)dnl
        i[34567]86-*-mingw32*)
changequote([,])dnl
                tm_file=i386/mingw32.h
                xm_file="${xm_file} i386/xm-mingw32.h"
                tmake_file="i386/t-cygwin i386/t-mingw32"
                extra_objs=winnt.o
                xmake_file=i386/x-cygwin
                if test x$enable_threads = xyes; then
                        thread_file='win32'
                fi
                exeext=.exe
                case $machine in
                        *mingw32msv*)
                                ;;
                        *minwg32crt* | *mingw32*)
                                tm_file="${tm_file} i386/crtdll.h"
                                ;;
                esac
                ;;
changequote(,)dnl
        i[34567]86-*-uwin*)
changequote([,])dnl
                tm_file=i386/uwin.h
                xm_file="${xm_file} i386/xm-uwin.h"
                xm_defines="USG NO_STAB_H"
                tmake_file="i386/t-cygwin i386/t-uwin"
                extra_objs=winnt.o
                xmake_file=i386/x-cygwin
                if test x$enable_threads = xyes; then
                        thread_file='win32'
                fi
                exeext=.exe
                ;;
changequote(,)dnl
        i[34567]86-*-interix*)
changequote([,])dnl
                tm_file="i386/i386-interix.h interix.h"
                xm_file="i386/xm-i386-interix.h xm-interix.h"
                xm_defines="USG"
                tmake_file="i386/t-interix"
                extra_objs=interix.o
                xmake_file=x-interix
                if test x$enable_threads = xyes ; then
                        thread_file='posix'
                fi
                if test x$stabs = xyes ; then
                        tm_file="${tm_file} dbxcoff.h"
                fi
                ;;
changequote(,)dnl
        i[34567]86-*-winnt3*)
changequote([,])dnl
                tm_file=i386/win-nt.h
                out_file=i386/i386.c
                xm_file="xm-winnt.h ${xm_file}"
                xmake_file=winnt/x-winnt
                tmake_file=i386/t-winnt
                extra_host_objs="winnt.o oldnames.o"
                extra_gcc_objs="spawnv.o oldnames.o"
                if test x$gnu_ld != xyes
                then
                        extra_programs=ld.exe
                fi
                if test x$enable_threads = xyes; then
                        thread_file='win32'
                fi
                ;;
changequote(,)dnl
        i[34567]86-dg-dgux*)
changequote([,])dnl
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG POSIX"
                out_file=i386/dgux.c
                tm_file=i386/dgux.h
                tmake_file=i386/t-dgux
                xmake_file=i386/x-dgux
                install_headers_dir=install-headers-cpio
              ;;
        i860-alliant-*)         # Alliant FX/2800
                tm_file="${tm_file} svr4.h i860/sysv4.h i860/fx2800.h"
                xm_file="${xm_file}"
                xmake_file=i860/x-fx2800
                tmake_file=i860/t-fx2800
                extra_parts="crtbegin.o crtend.o"
                ;;
        i860-*-bsd*)
                tm_file="${tm_file} i860/bsd.h"
                if test x$gas = xyes
                then
                        tm_file="${tm_file} i860/bsd-gas.h"
                fi
                use_collect2=yes
                ;;
        i860-*-mach*)
                tm_file="${tm_file} i860/mach.h"
                tmake_file=t-libc-ok
                ;;
        i860-*-osf*)                    # Intel Paragon XP/S, OSF/1AD
                tm_file="${tm_file} svr3.h i860/paragon.h"
                xm_defines="USG SVR3"
                tmake_file=t-osf
                ;;
        i860-*-sysv3*)
                tm_file="${tm_file} svr3.h i860/sysv3.h"
                xm_defines="USG SVR3"
                xmake_file=i860/x-sysv3
                extra_parts="crtbegin.o crtend.o"
                ;;
        i860-*-sysv4*)
                tm_file="${tm_file} svr4.h i860/sysv4.h"
                xm_defines="USG SVR3"
                xmake_file=i860/x-sysv4
                tmake_file=t-svr4
                extra_parts="crtbegin.o crtend.o"
                ;;
        i960-wrs-vxworks5 | i960-wrs-vxworks5.0*)
                tm_file="${tm_file} i960/vx960.h"
                tmake_file=i960/t-vxworks960
                use_collect2=yes
                thread_file='vxworks'
                ;;
        i960-wrs-vxworks5* | i960-wrs-vxworks)
                tm_file="${tm_file} dbxcoff.h i960/i960-coff.h i960/vx960-coff.h"
                tmake_file=i960/t-vxworks960
                use_collect2=yes
                thread_file='vxworks'
                ;;
        i960-wrs-vxworks*)
                tm_file="${tm_file} i960/vx960.h"
                tmake_file=i960/t-vxworks960
                use_collect2=yes
                thread_file='vxworks'
                ;;
        i960-*-coff*)
                tm_file="${tm_file} dbxcoff.h i960/i960-coff.h libgloss.h"
                tmake_file=i960/t-960bare
                use_collect2=yes
                ;;
        i960-*-rtems)
                tmake_file="i960/t-960bare t-rtems"
                tm_file="${tm_file} dbxcoff.h i960/rtems.h"
                use_collect2=yes
                ;;
        i960-*-*)                       # Default i960 environment.
                use_collect2=yes
                ;;
        ia64*-*-elf*)
                tm_file=ia64/elf.h
                tmake_file="ia64/t-ia64"
                target_cpu_default="0"
                if test x$gas = xyes
                then
                        target_cpu_default="${target_cpu_default}|MASK_GNU_AS"
                fi
                if test x$gnu_ld = xyes
                then
                        target_cpu_default="${target_cpu_default}|MASK_GNU_LD"
                fi
                ;;
        ia64*-*-linux*)
                tm_file=ia64/linux.h
                tmake_file="t-linux ia64/t-ia64"
                target_cpu_default="MASK_GNU_AS|MASK_GNU_LD"
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        m32r-*-elf*)
                extra_parts="crtinit.o crtfini.o"
                ;;
        m68000-convergent-sysv*)
                tm_file=m68k/ctix.h
                xm_file="m68k/xm-3b1.h ${xm_file}"
                xm_defines=USG
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68000-hp-bsd*)                 # HP 9000/200 running BSD
                tm_file=m68k/hp2bsd.h
                xmake_file=m68k/x-hp2bsd
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68000-hp-hpux*)                # HP 9000 series 300
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG"
                if test x$gas = xyes
                then
                        xmake_file=m68k/x-hp320g
                        tm_file=m68k/hp310g.h
                else
                        xmake_file=m68k/x-hp320
                        tm_file=m68k/hp310.h
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68000-sun-sunos3*)
                tm_file=m68k/sun2.h
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68000-sun-sunos4*)
                tm_file=m68k/sun2o4.h
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68000-att-sysv*)
                xm_file="m68k/xm-3b1.h ${xm_file}"
                xm_defines=USG
                if test x$gas = xyes
                then
                        tm_file=m68k/3b1g.h
                else
                        tm_file=m68k/3b1.h
                fi
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68k-apple-aux*)                # Apple Macintosh running A/UX
                xm_defines="USG AUX"
                tmake_file=m68k/t-aux
                install_headers_dir=install-headers-cpio
                extra_headers=math-68881.h
                extra_parts="crt1.o mcrt1.o maccrt1.o crt2.o crtn.o"
                tm_file=
                if test "$gnu_ld" = yes
                then
                        tm_file="${tm_file} m68k/auxgld.h"
                else
                        tm_file="${tm_file} m68k/auxld.h"
                fi
                if test "$gas" = yes
                then
                        tm_file="${tm_file} m68k/auxgas.h"
                else
                        tm_file="${tm_file} m68k/auxas.h"
                fi
                tm_file="${tm_file} m68k/a-ux.h"
                float_format=m68k
                ;;
        m68k-apollo-*)
                tm_file=m68k/apollo68.h
                xmake_file=m68k/x-apollo68
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-altos-sysv*)                  # Altos 3068
                if test x$gas = xyes
                then
                        tm_file=m68k/altos3068.h
                        xm_defines=USG
                else
                        echo "The Altos is supported only with the GNU assembler" 1>&2
                        exit 1
                fi
                extra_headers=math-68881.h
                ;;
        m68k-bull-sysv*)                # Bull DPX/2
                if test x$gas = xyes
                then
                        if test x$stabs = xyes
                        then
                                tm_file=m68k/dpx2cdbx.h
                        else
                                tm_file=m68k/dpx2g.h
                        fi
                else
                        tm_file=m68k/dpx2.h
                fi
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines=USG
                xmake_file=m68k/x-dpx2
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68k-atari-sysv4*)              # Atari variant of V.4.
                tm_file=m68k/atari.h
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG FULL_PROTOTYPES"
                tmake_file=t-svr4
                extra_parts="crtbegin.o crtend.o"
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-motorola-sysv*)
                tm_file=m68k/mot3300.h
                xm_file="xm-alloca.h m68k/xm-mot3300.h ${xm_file}"
                if test x$gas = xyes
                then
                        xmake_file=m68k/x-mot3300-gas
                        if test x$gnu_ld = xyes
                        then
                                tmake_file=m68k/t-mot3300-gald
                        else
                                tmake_file=m68k/t-mot3300-gas
                                use_collect2=yes
                        fi
                else
                        xmake_file=m68k/x-mot3300
                        if test x$gnu_ld = xyes
                        then
                                tmake_file=m68k/t-mot3300-gld
                        else
                                tmake_file=m68k/t-mot3300
                                use_collect2=yes
                        fi
                fi
                gdb_needs_out_file_path=yes
                extra_parts="crt0.o mcrt0.o"
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-ncr-sysv*)                 # NCR Tower 32 SVR3
                tm_file=m68k/tower-as.h
                xm_defines="USG SVR3"
                xmake_file=m68k/x-tower
                extra_parts="crtbegin.o crtend.o"
                extra_headers=math-68881.h
                ;;
        m68k-plexus-sysv*)
                tm_file=m68k/plexus.h
                xm_file="xm-alloca.h m68k/xm-plexus.h ${xm_file}"
                xm_defines=USG
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68k-tti-*)
                tm_file=m68k/pbb.h
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines=USG
                extra_headers=math-68881.h
                ;;
        m68k-crds-unos*)
                xm_file="xm-alloca.h m68k/xm-crds.h ${xm_file}"
                xm_defines="USG unos"
                xmake_file=m68k/x-crds
                tm_file=m68k/crds.h
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68k-cbm-sysv4*)                # Commodore variant of V.4.
                tm_file=m68k/amix.h
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG FULL_PROTOTYPES"
                xmake_file=m68k/x-amix
                tmake_file=t-svr4
                extra_parts="crtbegin.o crtend.o"
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-ccur-rtu)
                tm_file=m68k/ccur-GAS.h
                xmake_file=m68k/x-ccur
                extra_headers=math-68881.h
                use_collect2=yes
                float_format=m68k
                ;;
        m68k-hp-bsd4.4*)                # HP 9000/3xx running 4.4bsd
                tm_file=m68k/hp3bsd44.h
                xmake_file=m68k/x-hp3bsd44
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-hp-bsd*)                   # HP 9000/3xx running Berkeley Unix
                tm_file=m68k/hp3bsd.h
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-isi-bsd*)
                if test x$with_fp = xno
                then
                        tm_file=m68k/isi-nfp.h
                else
                        tm_file=m68k/isi.h
                        float_format=m68k
                fi
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68k-hp-hpux7*) # HP 9000 series 300 running HPUX version 7.
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG"
                if test x$gas = xyes
                then
                        xmake_file=m68k/x-hp320g
                        tm_file=m68k/hp320g.h
                else
                        xmake_file=m68k/x-hp320
                        tm_file=m68k/hpux7.h
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-hp-hpux*)  # HP 9000 series 300
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines="USG"
                if test x$gas = xyes
                then
                        xmake_file=m68k/x-hp320g
                        tm_file=m68k/hp320g.h
                else
                        xmake_file=m68k/x-hp320
                        tm_file=m68k/hp320.h
                fi
                install_headers_dir=install-headers-cpio
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-sun-mach*)
                tm_file=m68k/sun3mach.h
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-sony-newsos3*)
                if test x$gas = xyes
                then
                        tm_file=m68k/news3gas.h
                else
                        tm_file=m68k/news3.h
                fi
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-sony-bsd* | m68k-sony-newsos*)
                if test x$gas = xyes
                then
                        tm_file=m68k/newsgas.h
                else
                        tm_file=m68k/news.h
                fi
                use_collect2=yes
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-next-nextstep2*)
                tm_file=m68k/next21.h
                xm_file="m68k/xm-next.h ${xm_file}"
                tmake_file=m68k/t-next
                xmake_file=m68k/x-next
                extra_objs=nextstep.o
                extra_headers=math-68881.h
                use_collect2=yes
                float_format=m68k
                ;;
changequote(,)dnl
        m68k-next-nextstep[34]*)
changequote([,])dnl
                tm_file=m68k/next.h
                xm_file="m68k/xm-next.h ${xm_file}"
                tmake_file=m68k/t-next
                xmake_file=m68k/x-next
                extra_objs=nextstep.o
                extra_parts="crtbegin.o crtend.o"
                extra_headers=math-68881.h
                float_format=m68k
                if test x$enable_threads = xyes; then
                        thread_file='mach'
                fi
                ;;
        m68k-sun-sunos3*)
                if test x$with_fp = xno
                then
                        tm_file=m68k/sun3n3.h
                else
                        tm_file=m68k/sun3o3.h
                        float_format=m68k
                fi
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68k-sun-sunos*)                        # For SunOS 4 (the default).
                if test x$with_fp = xno
                then
                        tm_file=m68k/sun3n.h
                else
                        tm_file=m68k/sun3.h
                        float_format=m68k
                fi
                use_collect2=yes
                extra_headers=math-68881.h
                ;;
        m68k-wrs-vxworks*)
                tm_file=m68k/vxm68k.h
                tmake_file=m68k/t-vxworks68
                extra_headers=math-68881.h
                thread_file='vxworks'
                float_format=m68k
                ;;
        m68k-*-aout*)
                tmake_file=m68k/t-m68kbare
                tm_file="m68k/m68k-aout.h libgloss.h"
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-*-coff*)
                tmake_file=m68k/t-m68kbare
                tm_file="m68k/m68k-coff.h dbx.h libgloss.h"
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68020-*-elf* | m68k-*-elf*)
                tm_file="m68k/m68020-elf.h"
                xm_file=m68k/xm-m68kv.h
                tmake_file=m68k/t-m68kelf
                header_files=math-68881.h
                ;;
        m68k-*-lynxos*)
                if test x$gas = xyes
                then
                        tm_file=m68k/lynx.h
                else
                        tm_file=m68k/lynx-ng.h
                fi
                xm_file=m68k/xm-lynx.h
                xmake_file=x-lynx
                tmake_file=m68k/t-lynx
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k*-*-netbsd*)
                tm_file=m68k/netbsd.h
                tmake_file=t-netbsd
                float_format=m68k
                use_collect2=yes
                ;;
        m68k*-*-openbsd*)
                float_format=m68k
                # we need collect2 until our bug is fixed...
                use_collect2=yes
                ;;
        m68k-*-sysv3*)                  # Motorola m68k's running system V.3
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines=USG
                xmake_file=m68k/x-m68kv
                extra_parts="crtbegin.o crtend.o"
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-*-sysv4*)                  # Motorola m68k's running system V.4
                tm_file=m68k/m68kv4.h
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines=USG
                tmake_file=t-svr4
                extra_parts="crtbegin.o crtend.o"
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-*-linux-gnuaout*)          # Motorola m68k's running GNU/Linux
                                        # with a.out format
                xmake_file=x-linux
                tm_file=m68k/linux-aout.h
                tmake_file="t-linux-aout m68k/t-linux-aout"
                extra_headers=math-68881.h
                float_format=m68k
                gnu_ld=yes
                ;;
        m68k-*-linux-gnulibc1)          # Motorola m68k's running GNU/Linux
                                        # with ELF format using the
                                        # GNU/Linux C library 5
                xmake_file=x-linux
                tm_file=m68k/linux.h
                tmake_file="t-linux t-linux-gnulibc1 m68k/t-linux"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                extra_headers=math-68881.h
                float_format=m68k
                gnu_ld=yes
                ;;
        m68k-*-linux-gnu*)              # Motorola m68k's running GNU/Linux
                                        # with ELF format using glibc 2
                                        # aka the GNU/Linux C library 6.
                xmake_file=x-linux
                tm_file=m68k/linux.h
                tmake_file="t-linux m68k/t-linux"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                extra_headers=math-68881.h
                float_format=m68k
                gnu_ld=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        m68k-*-psos*)
                tmake_file=m68k/t-m68kbare
                tm_file=m68k/m68k-psos.h
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-*-rtemscoff*)
                tmake_file="m68k/t-m68kbare t-rtems"
                tm_file=m68k/rtems.h
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m68k-*-rtemself*|m68k-*-rtems*)
                tmake_file="m68k/t-m68kbare t-rtems m68k/t-crtstuff"
                tm_file=m68k/rtemself.h
                extra_headers=math-68881.h
                float_format=m68k
                ;;
        m88k-dg-dgux*)
                case $machine in
                  m88k-dg-dguxbcs*)
                    tm_file=m88k/dguxbcs.h
                    tmake_file=m88k/t-dguxbcs
                    ;;
                  *)
                    tm_file=m88k/dgux.h
                    tmake_file=m88k/t-dgux
                    ;;
                esac
                extra_parts="crtbegin.o bcscrtbegin.o crtend.o m88kdgux.ld"
                xmake_file=m88k/x-dgux
                if test x$gas = xyes
                then
                        tmake_file=m88k/t-dgux-gas
                fi
                ;;
        m88k-dolphin-sysv3*)
                tm_file=m88k/dolph.h
                extra_parts="crtbegin.o crtend.o"
                xm_file="m88k/xm-sysv3.h ${xm_file}"
                xmake_file=m88k/x-dolph
                if test x$gas = xyes
                then
                        tmake_file=m88k/t-m88k-gas
                fi
                ;;
        m88k-tektronix-sysv3)
                tm_file=m88k/tekXD88.h
                extra_parts="crtbegin.o crtend.o"
                xm_file="m88k/xm-sysv3.h ${xm_file}"
                xmake_file=m88k/x-tekXD88
                if test x$gas = xyes
                then
                        tmake_file=m88k/t-m88k-gas
                fi
                ;;
        m88k-*-aout*)
                tm_file=m88k/m88k-aout.h
                ;;
        m88k-*-coff*)
                tm_file=m88k/m88k-coff.h
                tmake_file=m88k/t-bug
                ;;
        m88k-*-luna*)
                tm_file=m88k/luna.h
                extra_parts="crtbegin.o crtend.o"
                if test x$gas = xyes
                then
                        tmake_file=m88k/t-luna-gas
                else
                        tmake_file=m88k/t-luna
                fi
                ;;
        m88k-*-openbsd*)
                tmake_file="${tmake_file} m88k/t-luna-gas"
                ;;
        m88k-*-sysv3*)
                tm_file=m88k/sysv3.h
                extra_parts="crtbegin.o crtend.o"
                xm_file="m88k/xm-sysv3.h ${xm_file}"
                xmake_file=m88k/x-sysv3
                if test x$gas = xyes
                then
                        tmake_file=m88k/t-m88k-gas
                fi
                ;;
        m88k-*-sysv4*)
                tm_file=m88k/sysv4.h
                extra_parts="crtbegin.o crtend.o"
                xmake_file=m88k/x-sysv4
                tmake_file=m88k/t-sysv4
                ;;
        mcore-*-elf)
                tm_file=mcore/mcore-elf.h
                tmake_file=mcore/t-mcore
                ;;
        mcore-*-pe*)
                tm_file=mcore/mcore-pe.h
                tmake_file=mcore/t-mcore-pe
                ;;
        mips-sgi-irix6*)                # SGI System V.4., IRIX 6
                if test "x$gnu_ld" = xyes
                then
                        tm_file="mips/iris6.h mips/iris6gld.h"
                else
                        tm_file=mips/iris6.h
                fi
                tmake_file=mips/t-iris6
                xm_file=mips/xm-iris6.h
                xmake_file=mips/x-iris6
#               if test x$enable_threads = xyes; then
#                       thread_file='irix'
#               fi
                ;;
        mips-wrs-vxworks)
                tm_file="mips/elf.h mips/vxworks.h"
                tmake_file=mips/t-ecoff
                gas=yes
                gnu_ld=yes
                extra_parts="crtbegin.o crtend.o"
                thread_file='vxworks'
                ;;
        mips-sgi-irix5cross64)          # Irix5 host, Irix 6 target, cross64
                tm_file="mips/iris6.h mips/cross64.h"
                xm_defines=USG
                xm_file="mips/xm-iris5.h"
                xmake_file=mips/x-iris
                tmake_file=mips/t-cross64
                # See comment in mips/iris[56].h files.
                use_collect2=yes
#               if test x$enable_threads = xyes; then
#                       thread_file='irix'
#               fi
                ;;
        mips-sni-sysv4)
                if test x$gas = xyes
                then
                        if test x$stabs = xyes
                        then
                                tm_file=mips/iris5gdb.h
                        else
                                tm_file="mips/sni-svr4.h mips/sni-gas.h"
                        fi
                else
                        tm_file=mips/sni-svr4.h
                fi
                xm_defines=USG
                xmake_file=mips/x-sni-svr4
                tmake_file=mips/t-mips-gas
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mips-sgi-irix5*)                # SGI System V.4., IRIX 5
                if test x$gas = xyes
                then
                        tm_file="mips/iris5.h mips/iris5gas.h"
                        if test x$stabs = xyes
                        then
                                tm_file="${tm_file} dbx.h"
                        fi
                else
                        tm_file=mips/iris5.h
                fi
                xm_defines=USG
                xm_file="mips/xm-iris5.h"
                xmake_file=mips/x-iris
                # mips-tfile doesn't work yet
                tmake_file=mips/t-mips-gas
                # See comment in mips/iris5.h file.
                use_collect2=yes
#               if test x$enable_threads = xyes; then
#                       thread_file='irix'
#               fi
                ;;
        mips-sgi-irix4loser*)           # Mostly like a MIPS.
                tm_file="mips/iris4loser.h mips/iris3.h ${tm_file} mips/iris4.h"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                xmake_file=mips/x-iris
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
#               if test x$enable_threads = xyes; then
#                       thread_file='irix'
#               fi
                ;;
        mips-sgi-irix4*)                # Mostly like a MIPS.
                tm_file="mips/iris3.h ${tm_file} mips/iris4.h"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                xmake_file=mips/x-iris
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
#               if test x$enable_threads = xyes; then
#                       thread_file='irix'
#               fi
                ;;
        mips-sgi-*)                     # Mostly like a MIPS.
                tm_file="mips/iris3.h ${tm_file}"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                xmake_file=mips/x-iris3
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mips-dec-osfrose*)              # Decstation running OSF/1 reference port with OSF/rose.
                tm_file="mips/osfrose.h ${tm_file}"
                xmake_file=mips/x-osfrose
                tmake_file=mips/t-osfrose
                extra_objs=halfpic.o
                use_collect2=yes
                ;;
        mips-dec-osf*)                  # Decstation running OSF/1 as shipped by DIGITAL
                tm_file=mips/dec-osf1.h
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xmake_file=mips/x-dec-osf1
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        tmake_file=mips/t-ultrix
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mips-dec-bsd*)                  # Decstation running 4.4 BSD
              tm_file=mips/dec-bsd.h
              if test x$gas = xyes
              then
                        tmake_file=mips/t-mips-gas
              else
                        tmake_file=mips/t-ultrix
                        extra_passes="mips-tfile mips-tdump"
              fi
              if test x$gnu_ld != xyes
              then
                        use_collect2=yes
              fi
              ;;
        mipsel-*-netbsd* | mips-dec-netbsd*)    # Decstation running NetBSD
                tm_file=mips/netbsd.h
                # On NetBSD, the headers are already okay, except for math.h.
                tmake_file=t-netbsd
                ;;
       mips*-*-linux*)                         # Linux MIPS, either endian.
                xmake_file=x-linux
               case $machine in
                       mipsel-*)  tm_file="mips/elfl.h mips/linux.h" ;;
                       *)         tm_file="mips/elf.h mips/linux.h" ;;
               esac
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                gas=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        mips*el-*-openbsd*)     # mips little endian
                target_cpu_default="MASK_GAS|MASK_ABICALLS"
                ;;
        mips*-*-openbsd*)               # mips big endian
                target_cpu_default="MASK_GAS|MASK_ABICALLS"
                tm_file="mips/openbsd-be.h ${tm_file}"
                ;;
        mips-sony-bsd* | mips-sony-newsos*)     # Sony NEWS 3600 or risc/news.
                tm_file="mips/news4.h ${tm_file}"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                xmake_file=mips/x-sony
                ;;
        mips-sony-sysv*)                # Sony NEWS 3800 with NEWSOS5.0.
                                        # That is based on svr4.
                # t-svr4 is not right because this system doesn't use ELF.
                tm_file="mips/news5.h ${tm_file}"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mips-tandem-sysv4*)             # Tandem S2 running NonStop UX
                tm_file="mips/svr4-5.h mips/svr4-t.h"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                xmake_file=mips/x-sysv
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                        extra_parts="crtbegin.o crtend.o"
                else
                        tmake_file=mips/t-mips
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mips-*-ultrix* | mips-dec-mach3)        # Decstation.
                tm_file="mips/ultrix.h ${tm_file}"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xmake_file=mips/x-ultrix
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        tmake_file=mips/t-ultrix
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
changequote(,)dnl
        mips-*-riscos[56789]bsd*)
changequote([,])dnl
                tm_file=mips/bsd-5.h    # MIPS BSD 4.3, RISC-OS 5.0
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                if test x$gas = xyes
                then
                        tmake_file=mips/t-bsd-gas
                else
                        tmake_file=mips/t-bsd
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
changequote(,)dnl
        mips-*-bsd* | mips-*-riscosbsd* | mips-*-riscos[1234]bsd*)
changequote([,])dnl
                tm_file="mips/bsd-4.h ${tm_file}" # MIPS BSD 4.3, RISC-OS 4.0
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                if test x$gas = xyes
                then
                        tmake_file=mips/t-bsd-gas
                else
                        tmake_file=mips/t-bsd
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
changequote(,)dnl
        mips-*-riscos[56789]sysv4*)
changequote([,])dnl
                tm_file=mips/svr4-5.h   # MIPS System V.4., RISC-OS 5.0
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xmake_file=mips/x-sysv
                if test x$gas = xyes
                then
                        tmake_file=mips/t-svr4-gas
                else
                        tmake_file=mips/t-svr4
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
changequote(,)dnl
        mips-*-sysv4* | mips-*-riscos[1234]sysv4* | mips-*-riscossysv4*)
changequote([,])dnl
                tm_file="mips/svr4-4.h ${tm_file}"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                xmake_file=mips/x-sysv
                if test x$gas = xyes
                then
                        tmake_file=mips/t-svr4-gas
                else
                        tmake_file=mips/t-svr4
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
changequote(,)dnl
        mips-*-riscos[56789]sysv*)
changequote([,])dnl
                tm_file=mips/svr3-5.h   # MIPS System V.3, RISC-OS 5.0
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                xmake_file=mips/x-sysv
                if test x$gas = xyes
                then
                        tmake_file=mips/t-svr3-gas
                else
                        tmake_file=mips/t-svr3
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mips-*-sysv* | mips-*-riscos*sysv*)
                tm_file="mips/svr3-4.h ${tm_file}"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                xm_defines=USG
                xmake_file=mips/x-sysv
                if test x$gas = xyes
                then
                        tmake_file=mips/t-svr3-gas
                else
                        tmake_file=mips/t-svr3
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
changequote(,)dnl
        mips-*-riscos[56789]*)          # Default MIPS RISC-OS 5.0.
changequote([,])dnl
                tm_file=mips/mips-5.h
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mips-*-gnu*)
                ;;
        mipsel-*-ecoff*)
                tm_file=mips/ecoffl.h
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                tmake_file=mips/t-ecoff
                ;;
        mips-*-ecoff*)
                tm_file="gofast.h mips/ecoff.h"
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                tmake_file=mips/t-ecoff
                ;;
        mipsel-*-elf*)
                tm_file="mips/elfl.h"
                tmake_file=mips/t-elf
                ;;
        mips-*-elf*)
                tm_file="mips/elf.h"
                tmake_file=mips/t-elf
                ;;
        mips64el-*-elf*)
                tm_file="mips/elfl64.h"
                tmake_file=mips/t-elf
                ;;
        mips64orionel-*-elf*)
                tm_file="mips/elforion.h mips/elfl64.h"
                tmake_file=mips/t-elf
                ;;
        mips64-*-elf*)
                tm_file="mips/elf64.h"
                tmake_file=mips/t-elf
                ;;
        mips64orion-*-elf*)
                tm_file="mips/elforion.h mips/elf64.h"
                tmake_file=mips/t-elf
                ;;
        mips64orion-*-rtems*)
                tm_file="mips/elforion.h mips/elf64.h mips/rtems64.h"
                tmake_file="mips/t-elf t-rtems"
                ;;
        mipstx39el-*-elf*)
                tm_file="mips/r3900.h mips/elfl.h mips/abi64.h"
                tmake_file=mips/t-r3900
                ;;
        mipstx39-*-elf*)
                tm_file="mips/r3900.h mips/elf.h mips/abi64.h"
                tmake_file=mips/t-r3900
                ;;
        mips-*-*)                               # Default MIPS RISC-OS 4.0.
                if test x$stabs = xyes; then
                        tm_file="${tm_file} dbx.h"
                fi
                if test x$gas = xyes
                then
                        tmake_file=mips/t-mips-gas
                else
                        extra_passes="mips-tfile mips-tdump"
                fi
                if test x$gnu_ld != xyes
                then
                        use_collect2=yes
                fi
                ;;
        mn10200-*-*)
                float_format=i32
                cpu_type=mn10200
                tm_file="mn10200/mn10200.h"
                if test x$stabs = xyes
                then
                        tm_file="${tm_file} dbx.h"
                fi
                use_collect2=no
                ;;
        mn10300-*-*)
                cpu_type=mn10300
                tm_file="mn10300/mn10300.h"
                if test x$stabs = xyes
                then
                        tm_file="${tm_file} dbx.h"
                fi
                use_collect2=no
                ;;
        ns32k-encore-bsd*)
                tm_file=ns32k/encore.h
                use_collect2=yes
                ;;
        ns32k-sequent-bsd*)
                tm_file=ns32k/sequent.h
                use_collect2=yes
                ;;
        ns32k-tek6100-bsd*)
                tm_file=ns32k/tek6100.h
                use_collect2=yes
                ;;
        ns32k-tek6200-bsd*)
                tm_file=ns32k/tek6200.h
                use_collect2=yes
                ;;
# This has not been updated to GCC 2.
#       ns32k-ns-genix*)
#               xm_defines=USG
#               xmake_file=ns32k/x-genix
#               tm_file=ns32k/genix.h
#               use_collect2=yes
#               ;;
        ns32k-merlin-*)
                tm_file=ns32k/merlin.h
                use_collect2=yes
                ;;
        ns32k-pc532-mach*)
                tm_file=ns32k/pc532-mach.h
                use_collect2=yes
                ;;
        ns32k-pc532-minix*)
                tm_file=ns32k/pc532-min.h
                xm_file="ns32k/xm-pc532-min.h ${xm-file}"
                xm_defines=USG
                use_collect2=yes
                ;;
        ns32k-*-netbsd*)
                tm_file=ns32k/netbsd.h
                xm_file="ns32k/xm-netbsd.h ${xm_file}"
                # On NetBSD, the headers are already okay, except for math.h.
                tmake_file=t-netbsd
                use_collect2=yes
                ;;
        pdp11-*-bsd)
                tm_file="${tm_file} pdp11/2bsd.h"
                ;;
        pdp11-*-*)
                ;;
        avr-*-*)
                ;;
        ns32k-*-openbsd*)
                # Nothing special
                ;;
# This has not been updated to GCC 2.
#       pyramid-*-*)
#               cpu_type=pyr
#               xmake_file=pyr/x-pyr
#               use_collect2=yes
#               ;;

        pj*-linux*)
                tm_file="svr4.h pj/linux.h ${tm_file}"
                ;;
        pj-*)
                ;;
        pjl-*)
                tm_file="svr4.h pj/pjl.h ${tm_file}"
                ;;

        romp-*-aos*)
                use_collect2=yes
                ;;
        romp-*-mach*)
                xmake_file=romp/x-mach
                use_collect2=yes
                ;;
        romp-*-openbsd*)
                # Nothing special
                ;;
        powerpc-*-openbsd*)
                tmake_file="${tmake_file} rs6000/t-rs6000 rs6000/t-openbsd"
                ;;
        powerpc-*-beos*)
                cpu_type=rs6000
                tm_file=rs6000/beos.h
                xm_file=rs6000/xm-beos.h
                tmake_file=rs6000/t-beos
                xmake_file=rs6000/x-beos
                ;;
        powerpc-*-sysv* | powerpc-*-elf*)
                tm_file=rs6000/sysv4.h
                xm_file="rs6000/xm-sysv4.h"
                xm_defines="USG POSIX"
                extra_headers=ppc-asm.h
                if test x$gas = xyes
                then
                        tmake_file="rs6000/t-ppcos rs6000/t-ppccomm"
                else
                        tmake_file="rs6000/t-ppc rs6000/t-ppccomm"
                fi
                xmake_file=rs6000/x-sysv4
                ;;
        powerpc-*-eabiaix*)
                tm_file=rs6000/eabiaix.h
                tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
                extra_headers=ppc-asm.h
                ;;
        powerpc-*-eabisim*)
                tm_file=rs6000/eabisim.h
                tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
                extra_headers=ppc-asm.h
                ;;
        powerpc-*-eabi*)
                tm_file=rs6000/eabi.h
                if test x$gas = xyes
                then
                        tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
                else
                        tmake_file="rs6000/t-ppc rs6000/t-ppccomm"
                fi
                extra_headers=ppc-asm.h
                ;;
        powerpc-*-rtems*)
                tm_file=rs6000/rtems.h
                if test x$gas = xyes
                then
                     tmake_file="rs6000/t-ppcgas t-rtems rs6000/t-ppccomm"
                else
                     tmake_file="rs6000/t-ppc t-rtems rs6000/t-ppccomm"
                fi
                extra_headers=ppc-asm.h
                ;;
        powerpc-*-linux-gnulibc1)
                tm_file=rs6000/linux.h
                xm_file=rs6000/xm-sysv4.h
                out_file=rs6000/rs6000.c
                if test x$gas = xyes
                then
                        tmake_file="rs6000/t-ppcos t-linux t-linux-gnulibc1 rs6000/t-ppccomm"
                else
                        tmake_file="rs6000/t-ppc t-linux t-linux-gnulibc1 rs6000/t-ppccomm"
                fi
                xmake_file=x-linux
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                extra_headers=ppc-asm.h
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        powerpc-*-linux-gnu*)
                tm_file=rs6000/linux.h
                xm_file="rs6000/xm-sysv4.h"
                xm_defines="USG ${xm_defines}"
                out_file=rs6000/rs6000.c
                if test x$gas = xyes
                then
                        tmake_file="rs6000/t-ppcos t-linux rs6000/t-ppccomm"
                else
                        tmake_file="rs6000/t-ppc t-linux rs6000/t-ppccomm"
                fi
                xmake_file=x-linux
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                extra_headers=ppc-asm.h
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                ;;
        powerpc-wrs-vxworks*)
                cpu_type=rs6000
                xm_file="rs6000/xm-sysv4.h"
                xm_defines="USG POSIX"
                tm_file=rs6000/vxppc.h
                tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
                extra_headers=ppc-asm.h
                thread_file='vxworks'
                ;;
        powerpcle-wrs-vxworks*)
                cpu_type=rs6000
                xm_file="rs6000/xm-sysv4.h"
                xm_defines="USG POSIX"
                tm_file=rs6000/vxppcle.h
                tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
                extra_headers=ppc-asm.h
                thread_file='vxworks'
                ;;
        powerpcle-*-sysv* | powerpcle-*-elf*)
                tm_file=rs6000/sysv4le.h
                xm_file="rs6000/xm-sysv4.h"
                xm_defines="USG POSIX"
                if test x$gas = xyes
                then
                        tmake_file="rs6000/t-ppcos rs6000/t-ppccomm"
                else
                        tmake_file="rs6000/t-ppc rs6000/t-ppccomm"
                fi
                xmake_file=rs6000/x-sysv4
                extra_headers=ppc-asm.h
                ;;
        powerpcle-*-eabisim*)
                tm_file=rs6000/eabilesim.h
                tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
                extra_headers=ppc-asm.h
                ;;
        powerpcle-*-eabi*)
                tm_file=rs6000/eabile.h
                if test x$gas = xyes
                then
                        tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
                else
                        tmake_file="rs6000/t-ppc rs6000/t-ppccomm"
                fi
                extra_headers=ppc-asm.h
                ;;
        powerpcle-*-solaris2*)
                tm_file=rs6000/sol2.h
                xm_file="rs6000/xm-sysv4.h"
                xm_defines="USG POSIX"
                if test x$gas = xyes
                then
                        tmake_file="rs6000/t-ppcos rs6000/t-ppccomm"
                else
                        tmake_file="rs6000/t-ppc rs6000/t-ppccomm"
                fi
                xmake_file=rs6000/x-sysv4
                extra_headers=ppc-asm.h
                ;;
changequote(,)dnl
        rs6000-ibm-aix3.[01]*)
changequote([,])dnl
                tm_file=rs6000/aix31.h
                xmake_file=rs6000/x-aix31
                float_format=none
                use_collect2=yes
                ;;
changequote(,)dnl
        rs6000-ibm-aix3.2.[456789]* | powerpc-ibm-aix3.2.[456789]*)
changequote([,])dnl
                tm_file=rs6000/aix3newas.h
                if test x$host != x$target
                then
                        tmake_file=rs6000/t-xnewas
                else
                        tmake_file=rs6000/t-newas
                fi
                float_format=none
                use_collect2=yes
                ;;
changequote(,)dnl
        rs6000-ibm-aix4.[12]* | powerpc-ibm-aix4.[12]*)
changequote([,])dnl
                tm_file=rs6000/aix41.h
                if test x$host != x$target
                then
                        tmake_file=rs6000/t-xnewas
                else
                        tmake_file="rs6000/t-newas rs6000/t-aix41"
                fi
                xmake_file=rs6000/x-aix41
                float_format=none
                use_collect2=yes
                ;;
changequote(,)dnl
        rs6000-ibm-aix4.[3456789]* | powerpc-ibm-aix4.[3456789]*)
changequote([,])dnl
                tm_file=rs6000/aix43.h
                tmake_file=rs6000/t-aix43
                xmake_file=rs6000/x-aix41
                float_format=none
                use_collect2=yes
                ;;
changequote(,)dnl
        rs6000-ibm-aix[56789].* | powerpc-ibm-aix[56789].*)
changequote([,])dnl
                tm_file=rs6000/aix43.h
                tmake_file=rs6000/t-aix43
                xmake_file=rs6000/x-aix41
                float_format=none
                use_collect2=yes
                ;;
        rs6000-ibm-aix*)
                float_format=none
                use_collect2=yes
                ;;
        rs6000-bull-bosx)
                float_format=none
                use_collect2=yes
                ;;
        rs6000-*-mach*)
                tm_file=rs6000/mach.h
                xm_file="${xm_file} rs6000/xm-mach.h"
                xmake_file=rs6000/x-mach
                use_collect2=yes
                ;;
        rs6000-*-lynxos*)
                tm_file=rs6000/lynx.h
                xm_file=rs6000/xm-lynx.h
                tmake_file=rs6000/t-rs6000
                xmake_file=rs6000/x-lynx
                use_collect2=yes
                ;;
        sh-*-elf*)
                tm_file=sh/elf.h
                float_format=sh
                ;;
        sh-*-rtemself*)
                tmake_file="sh/t-sh t-rtems"
                tm_file=sh/rtemself.h
                float_format=sh
                ;;
        sh-*-rtems*)
                tmake_file="sh/t-sh t-rtems"
                tm_file=sh/rtems.h
                float_format=sh
                ;;
        sh-*-*)
                float_format=sh
                ;;
        sparc-tti-*)
                tm_file=sparc/pbd.h
                xm_file="xm-alloca.h ${xm_file}"
                xm_defines=USG
                ;;
        sparc-wrs-vxworks* | sparclite-wrs-vxworks*)
                tm_file=sparc/vxsparc.h
                tmake_file=sparc/t-vxsparc
                use_collect2=yes
                thread_file='vxworks'
                ;;
        sparc-*-aout*)
                tmake_file=sparc/t-sparcbare
                tm_file="sparc/aout.h libgloss.h"
                ;;
        sparc-*-netbsd*)
                tm_file=sparc/netbsd.h
                tmake_file=t-netbsd
                use_collect2=yes
                ;;
        sparc-*-openbsd*)
                # we need collect2 until our bug is fixed...
                use_collect2=yes
                ;;
        sparc-*-bsd*)
                tm_file=sparc/bsd.h
                ;;
        sparc-*-elf*)
                tm_file=sparc/elf.h
                tmake_file=sparc/t-elf
                extra_parts="crti.o crtn.o crtbegin.o crtend.o"
                #float_format=i128
                float_format=i64
                ;;
        sparc-*-linux-gnuaout*)         # Sparc's running GNU/Linux, a.out
                xm_file="${xm_file} sparc/xm-linux.h"
                tm_file=sparc/linux-aout.h
                xmake_file=x-linux
                gnu_ld=yes
                ;;
        sparc-*-linux-gnulibc1*)        # Sparc's running GNU/Linux, libc5
                xm_file="${xm_file} sparc/xm-linux.h"
                xmake_file=x-linux
                tm_file=sparc/linux.h
                tmake_file="t-linux t-linux-gnulibc1"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                float_format=sparc
                ;;
        sparc-*-linux-gnu*)             # Sparc's running GNU/Linux, libc6
                xm_file="${xm_file} sparc/xm-linux.h"
                xmake_file=x-linux
                tm_file=sparc/linux.h
                tmake_file="t-linux"
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                float_format=sparc
                ;;
        sparc-*-lynxos*)
                if test x$gas = xyes
                then
                        tm_file=sparc/lynx.h
                else
                        tm_file=sparc/lynx-ng.h
                fi
                xm_file=sparc/xm-lynx.h
                tmake_file=sparc/t-sunos41
                xmake_file=x-lynx
                ;;
        sparc-*-rtemsaout*)
                tmake_file="sparc/t-sparcbare t-rtems"
                tm_file=sparc/rtems.h
                ;;
        sparc-*-rtems*|sparc-*-rtemself*)
                tm_file="sparc/rtemself.h"
                tmake_file="sparc/t-elf t-rtems"
                extra_parts="crti.o crtn.o crtbegin.o crtend.o"
                #float_format=i128
                float_format=i64
                ;;
        sparcv9-*-solaris2*)
                if test x$gnu_ld = xyes
                then
                        tm_file=sparc/sol2-64.h
                else
                        tm_file=sparc/sol2-sld-64.h
                fi
                xm_file="sparc/xm-sysv4-64.h sparc/xm-sol2.h"
                xm_defines="USG POSIX"
                tmake_file="sparc/t-sol2 sparc/t-sol2-64"
                xmake_file=sparc/x-sysv4
                extra_parts="crt1.o crti.o crtn.o gcrt1.o crtbegin.o crtend.o"
                float_format=none
                if test x${enable_threads} = x ; then
                    enable_threads=$have_pthread_h
                    if test x${enable_threads} = x ; then
                        enable_threads=$have_thread_h
                    fi
                fi
                if test x${enable_threads} = xyes ; then
                    if test x${have_pthread_h} = xyes ; then
                        thread_file='posix'
                    else
                        thread_file='solaris'
                    fi
                fi
                ;;
        sparc-hal-solaris2*)
                xm_file="sparc/xm-sysv4.h sparc/xm-sol2.h"
                xm_defines="USG POSIX"
                tm_file="sparc/sol2.h sparc/hal.h"
                tmake_file="sparc/t-halos sparc/t-sol2"
                xmake_file=sparc/x-sysv4
                extra_parts="crt1.o crti.o crtn.o gmon.o crtbegin.o crtend.o"
                case $machine in
                *-*-solaris2.[0-4])
                        float_format=i128
                ;;
                *)
                        float_format=none
                        ;;
                esac
                thread_file='solaris'
                ;;
        sparc-*-solaris2*)
                if test x$gnu_ld = xyes
                then
                        tm_file=sparc/sol2.h
                else
                        tm_file=sparc/sol2-sld.h
                fi
                xm_file="sparc/xm-sysv4.h sparc/xm-sol2.h"
                xm_defines="USG POSIX"
                tmake_file=sparc/t-sol2
                xmake_file=sparc/x-sysv4
                extra_parts="crt1.o crti.o crtn.o gcrt1.o gmon.o crtbegin.o crtend.o"
                case $machine in
changequote(,)dnl
                *-*-solaris2.[0-6] | *-*-solaris2.[0-6].*) ;;
changequote([,])dnl
                *-*-solaris2*)
                        if test x$gnu_ld = xyes
                        then
                                tm_file=sparc/sol2-64.h
                        else
                                tm_file=sparc/sol2-sld-64.h
                        fi
                        tmake_file="$tmake_file sparc/t-sol2-64"
                        ;;
                esac
                case $machine in
changequote(,)dnl
                *-*-solaris2.[0-4])
changequote([,])dnl
                        float_format=i128
                        ;;
                *)
                        float_format=none
                        ;;
                esac
                if test x${enable_threads} = x; then
                    enable_threads=$have_pthread_h
                    if test x${enable_threads} = x; then
                        enable_threads=$have_thread_h
                    fi
                fi
                if test x${enable_threads} = xyes; then
                    if test x${have_pthread_h} = xyes; then
                        thread_file='posix'
                    else
                        thread_file='solaris'
                    fi
                fi
                ;;
        sparc-*-sunos4.0*)
                tm_file=sparc/sunos4.h
                tmake_file=sparc/t-sunos40
                use_collect2=yes
                ;;
        sparc-*-sunos4*)
                tm_file=sparc/sunos4.h
                tmake_file=sparc/t-sunos41
                use_collect2=yes
                if test x$gas = xyes; then
                        tm_file="${tm_file} sparc/sun4gas.h"
                fi
                ;;
        sparc-*-sunos3*)
                tm_file=sparc/sun4o3.h
                use_collect2=yes
                ;;
        sparc-*-sysv4*)
                tm_file=sparc/sysv4.h
                xm_file="sparc/xm-sysv4.h"
                xm_defines="USG POSIX"
                tmake_file=t-svr4
                xmake_file=sparc/x-sysv4
                extra_parts="crtbegin.o crtend.o"
                ;;
        sparc-*-vxsim*)
                xm_file="sparc/xm-sysv4.h sparc/xm-sol2.h"
                xm_defines="USG POSIX"
                tm_file=sparc/vxsim.h
                tmake_file=sparc/t-vxsparc
                xmake_file=sparc/x-sysv4
                ;;
        sparclet-*-aout*)
                tm_file="sparc/splet.h libgloss.h"
                tmake_file=sparc/t-splet
                ;;
        sparclite-*-coff*)
                tm_file="sparc/litecoff.h libgloss.h"
                tmake_file=sparc/t-sparclite
                ;;
        sparclite-*-aout*)
                tm_file="sparc/lite.h aoutos.h libgloss.h"
                tmake_file=sparc/t-sparclite
                ;;
        sparclite-*-elf*)
                tm_file="sparc/liteelf.h"
                tmake_file=sparc/t-sparclite
                extra_parts="crtbegin.o crtend.o"
                ;;
        sparc86x-*-aout*)
                tm_file="sparc/sp86x-aout.h aoutos.h libgloss.h"
                tmake_file=sparc/t-sp86x
                ;;
        sparc86x-*-elf*)        
                tm_file="sparc/sp86x-elf.h"
                tmake_file=sparc/t-sp86x
                extra_parts="crtbegin.o crtend.o"
                ;;
        sparc64-*-aout*)
                tmake_file=sparc/t-sp64
                tm_file=sparc/sp64-aout.h
                ;;
        sparc64-*-elf*)
                tmake_file=sparc/t-sp64
                tm_file=sparc/sp64-elf.h
                extra_parts="crtbegin.o crtend.o"
                ;;
        sparc64-*-linux*)               # 64-bit Sparc's running GNU/Linux
                tmake_file="t-linux sparc/t-linux64"
                xm_file="sparc/xm-sp64.h sparc/xm-linux.h"
                tm_file=sparc/linux64.h
                xmake_file=x-linux
                extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
                gnu_ld=yes
                if test x$enable_threads = xyes; then
                        thread_file='posix'
                fi
                float_format=sparc
                ;;
# This hasn't been upgraded to GCC 2.
#       tahoe-harris-*)                 # Harris tahoe, using COFF.
#               tm_file=tahoe/harris.h
#               ;;
#       tahoe-*-bsd*)                   # tahoe running BSD
#               ;;
        thumb-*-coff* | thumbel-*-coff*)
                tm_file=arm/tcoff.h
                out_file=arm/thumb.c
                xm_file=arm/xm-thumb.h
                md_file=arm/thumb.md
                tmake_file=arm/t-thumb
                tm_p_file=arm/thumb-protos.h
                ;;
        thumb-*-elf* | thumbel-*-elf*)
                tm_file=arm/telf.h
                out_file=arm/thumb.c
                xm_file=arm/xm-thumb.h
                md_file=arm/thumb.md
                tmake_file=arm/t-thumb-elf
                tm_p_file=arm/thumb-protos.h
                ;;
        thumb-*-linux-gnu*)
                tm_file=arm/linux-telf.h
                out_file=arm/thumb.c
                xm_file=arm/xm-thumb.h
                md_file=arm/thumb.md
                tmake_file=arm/t-thumb-linux
                tm_p_file=arm/thumb-protos.h
                ;;
        thumb-*-uclinux*)
                tm_file=arm/uclinux-telf.h
                out_file=arm/thumb.c
                md_file=arm/thumb.md
                tmake_file=arm/t-thumb-linux
                xm_file=arm/xm-thumb.h
                tm_p_file=arm/thumb-protos.h
                ;;
        thumb-wrs-vxworks)
                tm_file=arm/tcoff.h
                out_file=arm/thumb.c
                xm_file=arm/xm-thumb.h
                md_file=arm/thumb.md
                tmake_file=arm/t-thumb
                thread_file='vxworks'
                tm_p_file=arm/thumb-protos.h
                ;;
        thumb-*-pe)
                tm_file=arm/tpe.h
                out_file=arm/thumb.c
                xm_file=arm/xm-thumb.h
                md_file=arm/thumb.md
                tmake_file=arm/t-pe-thumb
                extra_objs=pe.o
                tm_p_file=arm/thumb-protos.h
                ;;
# This hasn't been upgraded to GCC 2.
#       tron-*-*)
#               cpu_type=gmicro
#               use_collect2=yes
#               ;;
        v850-*-rtems*)
                cpu_type=v850
                tm_file="v850/rtems.h"
                xm_file="v850/xm-v850.h"
                tmake_file="v850/t-v850 t-rtems"
                if test x$stabs = xyes
                then
                        tm_file="${tm_file} dbx.h"
                fi
                use_collect2=no
                ;;
        v850-*-*)
                target_cpu_default="TARGET_CPU_generic"
                cpu_type=v850
                tm_file="v850/v850.h"
                xm_file="v850/xm-v850.h"
                tmake_file=v850/t-v850
                if test x$stabs = xyes
                then
                        tm_file="${tm_file} dbx.h"
                fi
                use_collect2=no
                ;;
        vax-*-bsd*)                     # vaxen running BSD
                use_collect2=yes
                float_format=vax
                ;;
        vax-*-sysv*)                    # vaxen running system V
                tm_file="${tm_file} vax/vaxv.h"
                xm_defines=USG
                float_format=vax
                ;;
        vax-*-netbsd*)
                tm_file="${tm_file} netbsd.h vax/netbsd.h"
                tmake_file=t-netbsd
                float_format=vax
                use_collect2=yes
                ;;
        vax-*-openbsd*)
                tmake_file="${tmake_file} vax/t-openbsd"
                ;;
        vax-*-ultrix*)                  # vaxen running ultrix
                tm_file="${tm_file} vax/ultrix.h"
                use_collect2=yes
                float_format=vax
                ;;
        vax-*-vms*)                     # vaxen running VMS
                xm_file=vax/xm-vms.h
                tm_file=vax/vms.h
                float_format=vax
                ;;
        vax-*-*)                        # vax default entry
                float_format=vax
                ;;
        we32k-att-sysv*)
                xm_file="${xm_file} xm-svr3"
                use_collect2=yes
                ;;
        *)
                echo "Configuration $machine not supported" 1>&2
                exit 1
                ;;
        esac

        case $machine in
        *-*-linux-gnu*)
                ;; # Existing GNU/Linux systems do not use the GNU setup.
        *-*-gnu*)
                # On the GNU system, the setup is just about the same on
                # each different CPU.  The specific machines that GNU
                # supports are matched above and just set $cpu_type.
                xm_file="xm-gnu.h ${xm_file}"
                tm_file=${cpu_type}/gnu.h
                extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"
                # GNU always uses ELF.
                elf=yes
                # GNU tools are the only tools.
                gnu_ld=yes
                gas=yes
                xmake_file=x-linux      # These details are the same as Linux.
                tmake_file=t-gnu        # These are not.
                ;;
        *-*-sysv4*)
                xmake_try_sysv=x-sysv
                install_headers_dir=install-headers-cpio
                ;;
        *-*-sysv*)
                install_headers_dir=install-headers-cpio
                ;;
        esac

        # Distinguish i[34567]86
        # Also, do not run mips-tfile on MIPS if using gas.
        # Process --with-cpu= for PowerPC/rs6000
        target_cpu_default2=
        case $machine in
        i486-*-*)
                target_cpu_default2=1
                ;;
        i586-*-*)
                case $target_alias in
                        k6-*)
                                target_cpu_default2=4
                                ;;
                        *)
                                target_cpu_default2=2
                                ;;
                esac
                ;;
        i686-*-* | i786-*-*)
                target_cpu_default2=3
                ;;
        alpha*-*-*)
                case $machine in
changequote(,)dnl
                        alphaev6[78]*)
changequote([,])dnl
                                target_cpu_default2="MASK_CPU_EV6|MASK_BWX|MASK_MAX|MASK_FIX|MASK_CIX"
                                ;;
                        alphaev6*)
                                target_cpu_default2="MASK_CPU_EV6|MASK_BWX|MASK_MAX|MASK_FIX"
                                ;;
                        alphapca56*)
                                target_cpu_default2="MASK_CPU_EV5|MASK_BWX|MASK_MAX"
                                ;;
                        alphaev56*)
                                target_cpu_default2="MASK_CPU_EV5|MASK_BWX"
                                ;;
                        alphaev5*)
                                target_cpu_default2="MASK_CPU_EV5"
                                ;;
                esac
                                
                if test x$gas = xyes
                then
                        if test "$target_cpu_default2" = ""
                        then
                                target_cpu_default2="MASK_GAS"
                        else
                                target_cpu_default2="${target_cpu_default2}|MASK_GAS"
                        fi
                fi
                ;;
        arm*-*-*)
                case "x$with_cpu" in
                        x)
                                # The most generic
                                target_cpu_default2="TARGET_CPU_generic"
                                ;;

                        # Distinguish cores, and major variants
                        # arm7m doesn't exist, but D & I don't affect code
changequote(,)dnl
                        xarm[23678] | xarm250 | xarm[67][01]0 \
                        | xarm7m | xarm7dm | xarm7dmi | xarm7tdmi \
                        | xarm7100 | xarm7500 | xarm7500fe | xarm810 \
                        | xstrongarm | xstrongarm110 | xstrongarm1100)
changequote([,])dnl
                                target_cpu_default2="TARGET_CPU_$with_cpu"
                                ;;

                        xyes | xno)
                                echo "--with-cpu must be passed a value" 1>&2
                                exit 1
                                ;;

                        *)
                                if test x$pass2done = xyes
                                then
                                        echo "Unknown cpu used with --with-cpu=$with_cpu" 1>&2
                                        exit 1
                                fi
                                ;;
                esac
                ;;

        mips*-*-ecoff* | mips*-*-elf*)
                if test x$gas = xyes
                then
                        if test x$gnu_ld = xyes
                        then
                                target_cpu_default2=20
                        else
                                target_cpu_default2=16
                        fi
                fi
                ;;
        mips*-*-*)
                if test x$gas = xyes
                then
                        target_cpu_default2=16
                fi
                ;;
        powerpc*-*-* | rs6000-*-*)
                case "x$with_cpu" in
                        x)
                                ;;

                        xcommon | xpower | xpower2 | xpowerpc | xrios \
                          | xrios1 | xrios2 | xrsc | xrsc1 \
                          | x601 | x602 | x603 | x603e | x604 | x604e | x620 \
                          | xec603e | x740 | x750 | x401 \
                          | x403 | x505 | x801 | x821 | x823 | x860)
                                target_cpu_default2="\"$with_cpu\""
                                ;;

                        xyes | xno)
                                echo "--with-cpu must be passed a value" 1>&2
                                exit 1
                                ;;

                        *)
                                if test x$pass2done = xyes
                                then
                                        echo "Unknown cpu used with --with-cpu=$with_cpu" 1>&2
                                        exit 1
                                fi
                                ;;
                esac
                ;;
        sparc*-*-*)
                case ".$with_cpu" in
                        .)
                                target_cpu_default2=TARGET_CPU_"`echo $machine | sed 's/-.*$//'`"
                                ;;
                        .supersparc | .hypersparc | .ultrasparc | .v7 | .v8 | .v9)
                                target_cpu_default2="TARGET_CPU_$with_cpu"
                                ;;
                        *)
                                if test x$pass2done = xyes
                                then
                                        echo "Unknown cpu used with --with-cpu=$with_cpu" 1>&2
                                        exit 1
                                fi
                                ;;
                esac
                ;;
        esac

        if test "$target_cpu_default2" != ""
        then
                if test "$target_cpu_default" != ""
                then
                        target_cpu_default="(${target_cpu_default}|${target_cpu_default2})"
                else
                        target_cpu_default=$target_cpu_default2
                fi
        fi

        # No need for collect2 if we have the GNU linker.
        # Actually, there is now; GNU ld doesn't handle the EH info or
        # collecting for shared libraries.
        #case x$gnu_ld in
        #xyes)
        #       use_collect2=
        #       ;;
        #esac

# Save data on machine being used to compile GCC in build_xm_file.
# Save data on host machine in vars host_xm_file and host_xmake_file.
        if test x$pass1done = x
        then
                if test x"$xm_file" = x
                then build_xm_file=$cpu_type/xm-$cpu_type.h
                else build_xm_file=$xm_file
                fi
                build_xm_defines=$xm_defines
                build_install_headers_dir=$install_headers_dir
                build_exeext=$exeext
                pass1done=yes
        else
                if test x$pass2done = x
                then
                        if test x"$xm_file" = x
                        then host_xm_file=$cpu_type/xm-$cpu_type.h
                        else host_xm_file=$xm_file
                        fi
                        host_xm_defines=$xm_defines
                        if test x"$xmake_file" = x
                        then xmake_file=$cpu_type/x-$cpu_type
                        fi
                        host_xmake_file="$xmake_file"
                        host_truncate_target=$truncate_target
                        host_extra_gcc_objs=$extra_gcc_objs
                        host_extra_objs=$extra_host_objs
                        host_exeext=$exeext
                        pass2done=yes
                fi
        fi
done

extra_objs="${host_extra_objs} ${extra_objs}"

# Default the target-machine variables that were not explicitly set.
if test x"$tm_file" = x
then tm_file=$cpu_type/$cpu_type.h; fi

if test x$extra_headers = x
then extra_headers=; fi

if test x"$xm_file" = x
then xm_file=$cpu_type/xm-$cpu_type.h; fi

if test x$md_file = x
then md_file=$cpu_type/$cpu_type.md; fi

if test x$out_file = x
then out_file=$cpu_type/$cpu_type.c; fi

if test x"$tmake_file" = x
then tmake_file=$cpu_type/t-$cpu_type
fi

if test x"$dwarf2" = xyes
then tm_file="$tm_file tm-dwarf2.h"
fi

if test x$float_format = x
then float_format=i64
fi

if test $float_format = none
then float_h_file=Makefile.in
else float_h_file=float-$float_format.h
fi

# Handle cpp installation.
if test x$enable_cpp != xno
then
  tmake_file="$tmake_file t-install-cpp"
fi

# Say what files are being used for the output code and MD file.
echo "Using \`$srcdir/config/$out_file' to output insns."
echo "Using \`$srcdir/config/$md_file' as machine description file."

count=a
for f in $tm_file; do
        count=${count}x
done
if test $count = ax; then
        echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
else
        echo "Using the following target machine macro files:"
        for f in $tm_file; do
                echo "  $srcdir/config/$f"
        done
fi

count=a
for f in $host_xm_file; do
        count=${count}x
done
if test $count = ax; then
        echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
else
        echo "Using the following host machine macro files:"
        for f in $host_xm_file; do
                echo "  $srcdir/config/$f"
        done
fi

if test "$host_xm_file" != "$build_xm_file"; then
        count=a
        for f in $build_xm_file; do
                count=${count}x
        done
        if test $count = ax; then
                echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
        else
                echo "Using the following build machine macro files:"
                for f in $build_xm_file; do
                        echo "  $srcdir/config/$f"
                done
        fi
fi

if test x$thread_file = x; then
        if test x$target_thread_file != x; then
                thread_file=$target_thread_file
        else
                thread_file='single'
        fi
fi

# Set up the header files.
# $links is the list of header files to create.
# $vars is the list of shell variables with file names to include.
# auto-host.h is the file containing items generated by autoconf and is
# the first file included by config.h.
null_defines=
host_xm_file="auto-host.h gansidecl.h ${host_xm_file} hwint.h"

# If host=build, it is correct to have hconfig include auto-host.h
# as well.  If host!=build, we are in error and need to do more 
# work to find out the build config parameters.
if test x$host = x$build
then
        build_xm_file="auto-host.h gansidecl.h ${build_xm_file} hwint.h"
else
        # We create a subdir, then run autoconf in the subdir.
        # To prevent recursion we set host and build for the new
        # invocation of configure to the build for this invocation
        # of configure. 
        tempdir=build.$$
        rm -rf $tempdir
        mkdir $tempdir
        cd $tempdir
        case ${srcdir} in
        /*) realsrcdir=${srcdir};;
        *) realsrcdir=../${srcdir};;
        esac
        CC=${CC_FOR_BUILD} ${realsrcdir}/configure \
                --target=$target --host=$build --build=$build

        # We just finished tests for the build machine, so rename
        # the file auto-build.h in the gcc directory.
        mv auto-host.h ../auto-build.h
        cd ..
        rm -rf $tempdir
        build_xm_file="auto-build.h gansidecl.h ${build_xm_file} hwint.h"
fi

xm_file="gansidecl.h ${xm_file}"
tm_file="gansidecl.h ${tm_file}"

vars="host_xm_file tm_file tm_p_file xm_file build_xm_file"
links="config.h tm.h tm_p.h tconfig.h hconfig.h"
defines="host_xm_defines null_defines null_defines xm_defines build_xm_defines"

rm -f config.bak
if test -f config.status; then mv -f config.status config.bak; fi

# Make the links.
while test -n "$vars"
do
        set $vars; var=$1; shift; vars=$*
        set $links; link=$1; shift; links=$*
        set $defines; define=$1; shift; defines=$*

        rm -f $link
        # Make sure the file is created, even if it is empty.
        echo >$link

        # Define TARGET_CPU_DEFAULT if the system wants one.
        # This substitutes for lots of *.h files.
        if test "$target_cpu_default" != "" -a $link = tm.h
        then
                echo "#define TARGET_CPU_DEFAULT ($target_cpu_default)" >>$link
        fi

        for file in `eval echo '$'$var`; do
                case $file in
                auto-config.h)
                        ;;
                *)
                        echo '#ifdef IN_GCC' >>$link
                        ;;
                esac
                echo "#include \"$file\"" >>$link
                case $file in
                auto-config.h)
                        ;;
                *)
                        echo '#endif' >>$link
                        ;;
                esac
        done

        for def in `eval echo '$'$define`; do
                echo "#ifndef $def" >>$link
                echo "#define $def" >>$link
                echo "#endif" >>$link
        done
done

# Truncate the target if necessary
if test x$host_truncate_target != x; then
        target=`echo $target | sed -e 's/\(..............\).*/\1/'`
fi

# Get the version trigger filename from the toplevel
if test "${with_gcc_version_trigger+set}" = set; then
        gcc_version_trigger=$with_gcc_version_trigger
else
        gcc_version_trigger=${srcdir}/version.c
fi
changequote(,)dnl
gcc_version=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^ \"]*\)[ \"].*/\1/'`
changequote([,])dnl

# Internationalization
PACKAGE=gcc
VERSION="$gcc_version"
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")
AC_DEFINE_UNQUOTED(VERSION, "$VERSION")
AC_SUBST(PACKAGE)
AC_SUBST(VERSION)

ALL_LINGUAS="en_UK"

# NLS support is still experimental, so disable it by default for now.
AC_ARG_ENABLE(nls,
  [  --enable-nls            use Native Language Support (disabled by default)],
  , enable_nls=no)

AM_GNU_GETTEXT
XGETTEXT="AWK='$AWK' \$(SHELL) \$(top_srcdir)/exgettext $XGETTEXT"

# Windows32 Registry support for specifying GCC installation paths.
AC_ARG_ENABLE(win32-registry,
[  --disable-win32-registry
                          Disable lookup of installation paths in the
                         Registry on Windows hosts.
  --enable-win32-registry Enable registry lookup (default).
  --enable-win32-registry=KEY
                          Use KEY instead of GCC version as the last portion
                         of the registry key.],,)

AC_MSG_CHECKING(whether windows registry support is requested)
if test x$enable_win32_registry != xno; then
  AC_DEFINE(ENABLE_WIN32_REGISTRY)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

# Check if user specified a different registry key.
case x${enable_win32_registry} in
x | xyes)
  # default.
  gcc_cv_win32_registry_key="$VERSION"
  ;;
xno)
  # no registry lookup.
  gcc_cv_win32_registry_key=''
  ;;
*)
  # user-specified key.
  gcc_cv_win32_registry_key="$enable_win32_registry"
  ;;
esac

if test x$enable_win32_registry != xno; then
  AC_MSG_CHECKING(registry key on windows hosts)
  AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key")
  AC_MSG_RESULT($gcc_cv_win32_registry_key)
fi

# Get an absolute path to the GCC top-level source directory
holddir=`pwd`
cd $srcdir
topdir=`pwd`
cd $holddir

# Conditionalize the makefile for this host machine.
# Make-host contains the concatenation of all host makefile fragments
# [there can be more than one].  This file is built by configure.frag.
host_overrides=Make-host
dep_host_xmake_file=
for f in .. ${host_xmake_file}
do
        if test -f ${srcdir}/config/$f
        then
                dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
        fi
done

# Conditionalize the makefile for this target machine.
# Make-target contains the concatenation of all host makefile fragments
# [there can be more than one].  This file is built by configure.frag.
target_overrides=Make-target
dep_tmake_file=
for f in .. ${tmake_file}
do
        if test -f ${srcdir}/config/$f
        then
                dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
        fi
done

# If the host doesn't support symlinks, modify CC in
# FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
# Otherwise, we can use "CC=$(CC)".
rm -f symtest.tem
if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
then
        cc_set_by_configure="\$(CC)"
        quoted_cc_set_by_configure="\$(CC)"
        stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
else
        rm -f symtest.tem
        if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
        then
                symbolic_link="cp -p"
        else
                symbolic_link="cp"
        fi
        cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
        quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
        stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
fi
rm -f symtest.tem

out_object_file=`basename $out_file .c`.o

tm_file_list=
for f in $tm_file; do
  case $f in
    gansidecl.h )
       tm_file_list="${tm_file_list} $f" ;;
    *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
  esac
done

host_xm_file_list=
for f in $host_xm_file; do
  case $f in
    auto-host.h | gansidecl.h | hwint.h )
       host_xm_file_list="${host_xm_file_list} $f" ;;
    *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
  esac
done

build_xm_file_list=
for f in $build_xm_file; do
  case $f in
    auto-build.h | auto-host.h | gansidecl.h | hwint.h )
       build_xm_file_list="${build_xm_file_list} $f" ;;
    *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
  esac
done

# Define macro CROSS_COMPILE in compilation
# if this is a cross-compiler.
# Also use all.cross instead of all.internal
# and add cross-make to Makefile.
cross_overrides="/dev/null"
if test x$host != x$target
then
        cross_defines="CROSS=-DCROSS_COMPILE"
        cross_overrides="${topdir}/cross-make"
fi

# When building gcc with a cross-compiler, we need to fix a few things.
# This must come after cross-make as we want all.build to override
# all.cross.
build_overrides="/dev/null"
if test x$build != x$host
then
        build_overrides="${topdir}/build-make"
fi

# Expand extra_headers to include complete path.
# This substitutes for lots of t-* files.
extra_headers_list=
if test "x$extra_headers" = x
then true
else
        # Prepend ${srcdir}/ginclude/ to every entry in extra_headers.
        for file in $extra_headers;
        do
                extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}"
        done
fi

if test x$use_collect2 = xno; then
        use_collect2=
fi

# Add a definition of USE_COLLECT2 if system wants one.
# Also tell toplev.c what to do.
# This substitutes for lots of t-* files.
if test x$use_collect2 = x
then
        will_use_collect2=
        maybe_use_collect2=
else
        will_use_collect2="collect2"
        maybe_use_collect2="-DUSE_COLLECT2"
fi

# NEED TO CONVERT
# Set MD_DEPS if the real md file is in md.pre-cpp.
# Set MD_CPP to the cpp to pass the md file through.  Md files use ';'
# for line oriented comments, so we must always use a GNU cpp.  If
# building gcc with a cross compiler, use the cross compiler just
# built.  Otherwise, we can use the cpp just built.
md_file_sub=
if test "x$md_cppflags" = x
then
        md_file_sub=$srcdir/config/$md_file
else
        md_file=md
fi

# If we have gas in the build tree, make a link to it.
if test -f ../gas/Makefile; then
        rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
fi

# If we have nm in the build tree, make a link to it.
if test -f ../binutils/Makefile; then
        rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
fi

# If we have ld in the build tree, make a link to it.
if test -f ../ld/Makefile; then
#       if test x$use_collect2 = x; then
#               rm -f ld; $symbolic_link ../ld/ld-new$host_exeext ld$host_exeext 2>/dev/null
#       else
                rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
#       fi
fi

# Figure out what assembler alignment features are present.
AC_MSG_CHECKING(assembler alignment features)
gcc_cv_as=
gcc_cv_as_alignment_features=
gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
if test -x "$DEFAULT_ASSEMBLER"; then
        gcc_cv_as="$DEFAULT_ASSEMBLER"
elif test -x "$AS"; then
        gcc_cv_as="$AS"
elif test -x as$host_exeext; then
        # Build using assembler in the current directory.
        gcc_cv_as=./as$host_exeext
elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then
        # Single tree build which includes gas.
        for f in $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in
        do
changequote(,)dnl
                gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
changequote([,])dnl
                if test x$gcc_cv_gas_version != x; then
                        break
                fi
        done
changequote(,)dnl
        gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"`
        gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
changequote([,])dnl
        if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
                # Gas version 2.6 and later support for .balign and .p2align.
                # bytes to skip when using .p2align.
                if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then
                        gcc_cv_as_alignment_features=".balign and .p2align"
                        AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
                fi
                # Gas version 2.8 and later support specifying the maximum
                # bytes to skip when using .p2align.
                if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then
                        gcc_cv_as_alignment_features=".p2align including maximum skip"
                        AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
                fi
        fi
elif test x$host = x$target; then
        # Native build.
        # Search the same directories that the installed compiler will
        # search.  Else we may find the wrong assembler and lose.  If we
        # do not find a suitable assembler binary, then try the user's
        # path.
        #
        # Also note we have to check MD_EXEC_PREFIX before checking the
        # user's path.  Unfortunately, there is no good way to get at the
        # value of MD_EXEC_PREFIX here.  So we do a brute force search
        # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
        # to be fixed as part of the make/configure rewrite too.

        if test "x$exec_prefix" = xNONE; then
                if test "x$prefix" = xNONE; then
                        test_prefix=/usr/local
                else
                        test_prefix=$prefix
                fi
        else
                test_prefix=$exec_prefix
        fi

        # If the loop below does not find an assembler, then use whatever
        # one we can find in the users's path.
        # user's path.
        as=as$host_exeext

        test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \
                   $test_prefix/lib/gcc-lib/$target \
                   /usr/lib/gcc/$target/$gcc_version \
                   /usr/lib/gcc/$target \
                   $test_prefix/$target/bin/$target/$gcc_version \
                   $test_prefix/$target/bin \
                   /usr/libexec \
                   /usr/ccs/gcc \
                   /usr/ccs/bin \
                   /udk/usr/ccs/bin \
                   /bsd43/usr/lib/cmplrs/cc \
                   /usr/cross64/usr/bin \
                   /usr/lib/cmplrs/cc \
                   /sysv/usr/lib/cmplrs/cc \
                   /svr4/usr/lib/cmplrs/cc \
                   /usr/bin"

        for dir in $test_dirs; do
                if test -f $dir/as$host_exeext; then
                        gcc_cv_as=$dir/as$host_exeext
                        break;
                fi
        done
fi
if test x$gcc_cv_as != x; then
        # Check if we have .balign and .p2align
        echo ".balign  4" > conftest.s
        echo ".p2align  2" >> conftest.s
        if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
                gcc_cv_as_alignment_features=".balign and .p2align"
                AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
        fi
        rm -f conftest.s conftest.o
        # Check if specifying the maximum bytes to skip when
        # using .p2align is supported.
        echo ".p2align 4,,7" > conftest.s
        if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
                gcc_cv_as_alignment_features=".p2align including maximum skip"
                AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
        fi
        rm -f conftest.s conftest.o
fi
AC_MSG_RESULT($gcc_cv_as_alignment_features)

AC_MSG_CHECKING(assembler subsection support)
gcc_cv_as_subsections=
if test x$gcc_cv_as != x; then
        # Check if we have .subsection
        echo ".subsection 1" > conftest.s
        if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
                gcc_cv_as_subsections=".subsection"
                if test -x nm$host_exeext; then
                        gcc_cv_nm=./nm$host_exeext
                elif test x$host = x$target; then
                        # Native build.
                        gcc_cv_nm=nm$host_exeext
                fi
                if test x$gcc_cv_nm != x; then
                        cat > conftest.s <<EOF
conftest_label1: .word 0
.subsection -1
conftest_label2: .word 0
.previous
EOF
                        if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
                                $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
                                $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
                                if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
                                        :
                                else
                                        gcc_cv_as_subsections="working .subsection -1"
                                        AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING)
                                fi
                        fi
                fi
        fi
        rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
fi
AC_MSG_RESULT($gcc_cv_as_subsections)

AC_MSG_CHECKING(assembler weak support)
gcc_cv_as_weak=
if test x$gcc_cv_as != x; then
        # Check if we have .weak
        echo "  .weak foobar" > conftest.s
        if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
                AC_DEFINE(HAVE_GAS_WEAK)
                gcc_cv_as_weak="yes"
        fi
        rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
fi
AC_MSG_RESULT($gcc_cv_as_weak)

case "$target" in 
  sparc*-*-*)
    AC_CACHE_CHECK([assembler .register pseudo-op support],
        gcc_cv_as_register_pseudo_op, [
        gcc_cv_as_register_pseudo_op=unknown
        if test x$gcc_cv_as != x; then
            # Check if we have .register
            echo ".register %g2, #scratch" > conftest.s
            if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
                gcc_cv_as_register_pseudo_op=yes
            else
                gcc_cv_as_register_pseudo_op=no
            fi
            rm -f conftest.s conftest.o
        fi
    ])
    if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
        AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP)
    fi

    case "$tm_file" in
    *64*)
        AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)],
            gcc_cv_as_flags64, [
                if test -n "$gcc_cv_as"; then
                    echo ".xword foo" > conftest.s
                    gcc_cv_as_flags64=no
                    for flag in "-xarch=v9" "-64 -Av9"; do
                        if $gcc_cv_as $flag -o conftest.o conftest.s \
                            > /dev/null 2>&1; then
                            gcc_cv_as_flags64=$flag
                            break
                        fi
                    done
                    rm -f conftest.s conftest.o
                else
                    if test "$gas" = yes; then
                        gcc_cv_as_flags64="-64 -Av9"
                    else
                        gcc_cv_as_flags64="-xarch=v9"
                    fi
                fi
        ])
        if test "x$gcc_cv_as_flags64" = xno; then
changequote(, )
            tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
            dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
changequote([, ])
        else
            AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64")
        fi
        ;;
    *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no}
        ;;
    esac

    if test "x$gcc_cv_as_flags64" != xno; then
        AC_CACHE_CHECK([for assembler offsetable %lo() support],
            gcc_cv_as_offsetable_lo10, [
            gcc_cv_as_offsetable_lo10=unknown
            if test "x$gcc_cv_as" != x; then
                # Check if assembler has offsetable %lo()
                echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
                echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
                if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \
                        > /dev/null 2>&1 &&
                   $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \
                        > /dev/null 2>&1; then
                    if cmp conftest.o conftest1.o > /dev/null 2>&1; then
                        gcc_cv_as_offsetable_lo10=no
                    else
                        gcc_cv_as_offsetable_lo10=yes
                    fi
                else
                    gcc_cv_as_offsetable_lo10=no
                fi
                rm -f conftest.s conftest.o conftest1.s conftest1.o
            fi
        ])
        if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
            AC_DEFINE(HAVE_AS_OFFSETABLE_LO10)
        fi
    fi
    ;;

changequote(,)dnl
  i[34567]86-*-*)
changequote([,])dnl
    AC_MSG_CHECKING(assembler instructions)
    gcc_cv_as_instructions=
    if test x$gcc_cv_as != x; then
        set "filds fists" "filds mem; fists mem"
        while test $# -gt 0
        do
                echo "$2" > conftest.s
                if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
                        gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
                        AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$1" | tr '[a-z ]' '[A-Z_]'`)
                fi
                shift 2
        done
        rm -f conftest.s conftest.o
    fi
    AC_MSG_RESULT($gcc_cv_as_instructions)
    ;;
esac

# Figure out what language subdirectories are present.
# Look if the user specified --enable-languages="..."; if not, use
# the environment variable $LANGUAGES if defined. $LANGUAGES might
# go away some day.
if test x"${enable_languages+set}" != xset; then
        if test x"${LANGUAGES+set}" = xset; then
                enable_languages="`echo ${LANGUAGES} | tr ' ' ','`"
        else
                enable_languages=all
        fi
fi
subdirs=
for lang in ${srcdir}/*/config-lang.in ..
do
        case $lang in
        ..) ;;
        # The odd quoting in the next line works around
        # an apparent bug in bash 1.12 on linux.
changequote(,)dnl
        ${srcdir}/[*]/config-lang.in) ;;
        *)
          lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
          if test "x$lang_alias" = x
          then
                echo "$lang doesn't set \$language." 1>&2
                exit 1
          fi
          if test x"${enable_languages}" = xall; then
                add_this_lang=yes
          else
                case "${enable_languages}" in
                    ${lang_alias} | "${lang_alias},"* | *",${lang_alias},"* | *",${lang_alias}" )
                        add_this_lang=yes
                        ;;
                    * )
                        add_this_lang=no
                        ;;
                esac
          fi
          if test x"${add_this_lang}" = xyes; then
                case $lang in
                    ${srcdir}/ada/config-lang.in)
                        if test x$gnat = xyes ; then
                                subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
                        fi
                        ;;
                    *)
                        subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
                        ;;
                esac
          fi
          ;;
changequote([,])dnl
        esac
done

# Make gthr-default.h if we have a thread file.
gthread_flags=
if test $thread_file != single; then
    rm -f gthr-default.h
    echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
    gthread_flags=-DHAVE_GTHR_DEFAULT
fi
AC_SUBST(gthread_flags)

# Find out what GC implementation we want, or may, use.
AC_ARG_WITH(gc,
[  --with-gc={simple,page} Choose the garbage collection mechanism to use
                           with the compiler.],
[case "$withval" in
  simple | page)
    GGC=ggc-$withval
    ;;
  *)
    AC_MSG_ERROR([$withval is an invalid option to --with-gc])
    ;;
esac],
[if test $ac_cv_func_mmap_anywhere = yes \
    || test $ac_cv_func_valloc = yes; then
  GGC=ggc-page
else
  GGC=ggc-simple
fi])
AC_SUBST(GGC)
echo "Using $GGC for garbage collection."

# Build a new-abi (c++) system
AC_ARG_ENABLE(new-gxx-abi,
[  --enable-new-gxx-abi
                          select the new abi for g++. You must select an ABI
                          at configuration time, so that the correct runtime
                          support is built. You cannot mix ABIs.],
[AC_DEFINE(ENABLE_NEW_GXX_ABI)
GXX_ABI_FLAG='-fnew-abi'
echo "Building a new-abi g++ compiler."
])
AC_SUBST(GXX_ABI_FLAG)

# Make empty files to contain the specs and options for each language.
# Then add #include lines to for a compiler that has specs and/or options.

lang_specs_files=
lang_options_files=
lang_tree_files=
rm -f specs.h options.h gencheck.h
touch specs.h options.h gencheck.h
for subdir in . $subdirs
do
        if test -f $srcdir/$subdir/lang-specs.h; then
                echo "#include \"$subdir/lang-specs.h\"" >>specs.h
                lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
        fi
        if test -f $srcdir/$subdir/lang-options.h; then
                echo "#include \"$subdir/lang-options.h\"" >>options.h
                lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
        fi
        if test -f $srcdir/$subdir/$subdir-tree.def; then
                echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h
                lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
        fi
done

# These (without "all_") are set in each config-lang.in.
# `language' must be a single word so is spelled singularly.
all_languages=
all_boot_languages=
all_compilers=
all_stagestuff=
all_diff_excludes=
all_outputs='Makefile intl/Makefile po/Makefile.in fixinc/Makefile gccbug'
# List of language makefile fragments.
all_lang_makefiles=
all_headers=
all_lib2funcs=

# Add the language fragments.
# Languages are added via two mechanisms.  Some information must be
# recorded in makefile variables, these are defined in config-lang.in.
# We accumulate them and plug them into the main Makefile.
# The other mechanism is a set of hooks for each of the main targets
# like `clean', `install', etc.

language_fragments="Make-lang"
language_hooks="Make-hooks"
oldstyle_subdirs=

for s in .. $subdirs
do
        if test $s != ".."
        then
                language=
                boot_language=
                compilers=
                stagestuff=
                diff_excludes=
                headers=
                outputs=
                lib2funcs=
                . ${srcdir}/$s/config-lang.in
                if test "x$language" = x
                then
                        echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
                        exit 1
                fi
                all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in ${srcdir}/$s/Makefile.in"
                all_languages="$all_languages $language"
                if test "x$boot_language" = xyes
                then
                        all_boot_languages="$all_boot_languages $language"
                fi
                all_compilers="$all_compilers $compilers"
                all_stagestuff="$all_stagestuff $stagestuff"
                all_diff_excludes="$all_diff_excludes $diff_excludes"
                all_headers="$all_headers $headers"
                all_outputs="$all_outputs $outputs"
                if test x$outputs = x
                then
                        oldstyle_subdirs="$oldstyle_subdirs $s"
                fi
                all_lib2funcs="$all_lib2funcs $lib2funcs"
        fi
done

# Since we can't use `::' targets, we link each language in
# with a set of hooks, reached indirectly via lang.${target}.

rm -f Make-hooks
touch Make-hooks
target_list="all.build all.cross start.encap rest.encap \
        info dvi \
        install-normal install-common install-info install-man \
        uninstall distdir \
        mostlyclean clean distclean extraclean maintainer-clean \
        stage1 stage2 stage3 stage4"
for t in $target_list
do
        x=
        for lang in .. $all_languages
        do
                if test $lang != ".."; then
                        x="$x $lang.$t"
                fi
        done
        echo "lang.$t: $x" >> Make-hooks
done

# If we're not building in srcdir, create .gdbinit.

if test ! -f Makefile.in; then
        echo "dir ." > .gdbinit
        echo "dir ${srcdir}" >> .gdbinit
        if test x$gdb_needs_out_file_path = xyes
        then
                echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
        fi
        if test "x$subdirs" != x; then
                for s in $subdirs
                do
                        echo "dir ${srcdir}/$s" >> .gdbinit
                done
        fi
        echo "source ${srcdir}/.gdbinit" >> .gdbinit
fi

# Define variables host_canonical and build_canonical
# because some Cygnus local changes in the Makefile depend on them.
build_canonical=${build}
host_canonical=${host}
target_subdir=
if test "${host}" != "${target}" ; then
    target_subdir=${target}/
fi
AC_SUBST(build_canonical)
AC_SUBST(host_canonical)
AC_SUBST(target_subdir)
        
# If this is using newlib, then define inhibit_libc in
# LIBGCC2_CFLAGS.  This will cause __eprintf to be left out of
# libgcc.a, but that's OK because newib should have its own version of
# assert.h.
inhibit_libc=
if test x$with_newlib = xyes; then
        inhibit_libc=-Dinhibit_libc
fi
AC_SUBST(inhibit_libc)

# If $(exec_prefix) exists and is not the same as $(prefix), then compute an
# absolute path for gcc_tooldir based on inserting the number of up-directory
# movements required to get from $(exec_prefix) to $(prefix) into the basic
# $(libsubdir)/@(unlibsubdir) based path.
# Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
# make and thus we'd get different behavior depending on where we built the
# sources.
if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
    gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
else
changequote(<<, >>)dnl
# An explanation of the sed strings:
#  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
#  -e 's|/$||'            match a trailing forward slash and eliminates it
#  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
#  -e 's|/[^/]*|../|g'    replaces each occurance of /<directory> with ../
#
# (*) Note this pattern overwrites the first character of the string
# with a forward slash if one is not already present.  This is not a
# problem because the exact names of the sub-directories concerned is
# unimportant, just the number of them matters.
#
# The practical upshot of these patterns is like this:
#
#  prefix     exec_prefix        result
#  ------     -----------        ------
#   /foo        /foo/bar          ../
#   /foo/       /foo/bar          ../
#   /foo        /foo/bar/         ../
#   /foo/       /foo/bar/         ../
#   /foo        /foo/bar/ugg      ../../
#
    dollar='$$'
    gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
changequote([, ])dnl
fi
AC_SUBST(gcc_tooldir)
AC_SUBST(dollar)

# Nothing to do for FLOAT_H, float_format already handled.
objdir=`pwd`
AC_SUBST(objdir)

# Process the language and host/target makefile fragments.
${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"

# Substitute configuration variables
AC_SUBST(subdirs)
AC_SUBST(all_boot_languages)
AC_SUBST(all_compilers)
AC_SUBST(all_diff_excludes)
AC_SUBST(all_headers)
AC_SUBST(all_lang_makefiles)
AC_SUBST(all_languages)
AC_SUBST(all_lib2funcs)
AC_SUBST(all_stagestuff)
AC_SUBST(build_exeext)
AC_SUBST(build_install_headers_dir)
AC_SUBST(build_xm_file_list)
AC_SUBST(cc_set_by_configure)
AC_SUBST(quoted_cc_set_by_configure)
AC_SUBST(cpp_install_dir)
AC_SUBST(cpp_main)
AC_SUBST(dep_host_xmake_file)
AC_SUBST(dep_tmake_file)
AC_SUBST(extra_c_flags)
AC_SUBST(extra_c_objs)
AC_SUBST(extra_cpp_objs)
AC_SUBST(extra_cxx_objs)
AC_SUBST(extra_headers_list)
AC_SUBST(extra_objs)
AC_SUBST(extra_parts)
AC_SUBST(extra_passes)
AC_SUBST(extra_programs)
AC_SUBST(float_h_file)
AC_SUBST(gcc_gxx_include_dir)
AC_SUBST(gcc_version)
AC_SUBST(gcc_version_trigger)
AC_SUBST(host_exeext)
AC_SUBST(host_extra_gcc_objs)
AC_SUBST(host_xm_file_list)
AC_SUBST(install)
AC_SUBST(lang_options_files)
AC_SUBST(lang_specs_files)
AC_SUBST(lang_tree_files)
AC_SUBST(local_prefix)
AC_SUBST(maybe_use_collect2)
AC_SUBST(md_file)
AC_SUBST(objc_boehm_gc)
AC_SUBST(out_file)
AC_SUBST(out_object_file)
AC_SUBST(stage_prefix_set_by_configure)
AC_SUBST(symbolic_link)
AC_SUBST(thread_file)
AC_SUBST(tm_file_list)
AC_SUBST(will_use_collect2)


AC_SUBST_FILE(target_overrides)
AC_SUBST_FILE(host_overrides)
AC_SUBST(cross_defines)
AC_SUBST_FILE(cross_overrides)
AC_SUBST_FILE(build_overrides)
AC_SUBST_FILE(language_fragments)
AC_SUBST_FILE(language_hooks)

# Echo that links are built
if test x$host = x$target
then
        str1="native "
else
        str1="cross-"
        str2=" from $host"
fi

if test x$host != x$build
then
        str3=" on a $build system"
fi

if test "x$str2" != x || test "x$str3" != x
then
        str4=
fi

echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2

if test "x$str2" != x || test "x$str3" != x
then
        echo " ${str2}${str3}." 1>&2
fi

# Truncate the target if necessary
if test x$host_truncate_target != x; then
        target=`echo $target | sed -e 's/\(..............\).*/\1/'`
fi

# Configure the subdirectories
# AC_CONFIG_SUBDIRS($subdirs)

# Create the Makefile
# and configure language subdirectories
AC_OUTPUT($all_outputs,
[
. $srcdir/configure.lang
case x$CONFIG_HEADERS in
xauto-host.h:config.in)
echo > cstamp-h ;;
esac
# If the host supports symlinks, point stage[1234] at ../stage[1234] so
# bootstrapping and the installation procedure can still use
# CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
# FLAGS_TO_PASS has been modified to solve the problem there.
# This is virtually a duplicate of what happens in configure.lang; we do
# an extra check to make sure this only happens if ln -s can be used.
if test "$symbolic_link" = "ln -s"; then
 for d in .. ${subdirs} ; do
   if test $d != ..; then
        STARTDIR=`pwd`
        cd $d
        for t in stage1 stage2 stage3 stage4 include
        do
                rm -f $t
                $symbolic_link ../$t $t 2>/dev/null
        done
        cd $STARTDIR
   fi
 done
else true ; fi
# Avoid having to add intl to our include paths.
if test -f intl/libintl.h; then
  echo creating libintl.h
  echo '#include "intl/libintl.h"' >libintl.h
fi
],
[
host='${host}'
build='${build}'
target='${target}'
target_alias='${target_alias}'
srcdir='${srcdir}'
subdirs='${subdirs}'
oldstyle_subdirs='${oldstyle_subdirs}'
symbolic_link='${symbolic_link}'
program_transform_set='${program_transform_set}'
program_transform_name='${program_transform_name}'
dep_host_xmake_file='${dep_host_xmake_file}'
host_xmake_file='${host_xmake_file}'
dep_tmake_file='${dep_tmake_file}'
tmake_file='${tmake_file}'
thread_file='${thread_file}'
gcc_version='${gcc_version}'
gcc_version_trigger='${gcc_version_trigger}'
local_prefix='${local_prefix}'
build_install_headers_dir='${build_install_headers_dir}'
build_exeext='${build_exeext}'
host_exeext='${host_exeext}'
out_file='${out_file}'
gdb_needs_out_file_path='${gdb_needs_out_file_path}'
SET_MAKE='${SET_MAKE}'
target_list='${target_list}'
target_overrides='${target_overrides}'
host_overrides='${host_overrides}'
cross_defines='${cross_defines}'
cross_overrides='${cross_overrides}'
build_overrides='${build_overrides}'
cpp_install_dir='${cpp_install_dir}'
])