+dnl We require that everyone use exactly the same Autoconf version so that
+dnl the internal functions defined and used by the main configure script
+dnl match those expected by the fragments. When changing this version,
+dnl install.texi also needs to be updated.
+m4_define([GLIBC_AUTOCONF_VERSION], [2.69])
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), GLIBC_AUTOCONF_VERSION, [],
+ [m4_fatal(m4_flatten(
+Exactly version GLIBC_AUTOCONF_VERSION of Autoconf is required but you have
+m4_defn([AC_AUTOCONF_VERSION])
+), [63])])dnl
+dnl
dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro
-dnl which appears in configure.in before the sysdep configure scripts are run.
-dnl Each sysdep configure.in does GLIBC_PROVIDES first, to avoid any
+dnl which appears in configure.ac before the sysdep configure scripts are run.
+dnl Each sysdep configure.ac does GLIBC_PROVIDES first, to avoid any
dnl AC_REQUIREs or AC_BEFOREs duplicating their code.
dnl
-define(AC_FD_MSG,6)dnl Autoconf lossage.
-define(AC_FD_CC,5)dnl Autoconf lossage.
-AC_DEFUN([GLIBC_PROVIDES], [dnl
+define([GLIBC_PROVIDES], [dnl
+AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+AC_PROVIDE([AC_CONFIG_SUBDIRS])dnl
+AC_PROVIDE([_AS_ECHO_N_PREPARE])dnl
+AC_PROVIDE([_AS_ECHO_PREPARE])dnl
+AC_PROVIDE([_AS_CR_PREPARE])dnl
+AC_PROVIDE([_AS_TR_SH_PREPARE])dnl
+AC_PROVIDE([_AS_VAR_ARITH_PREPARE])dnl
AC_PROVIDE([AC_PROG_INSTALL])dnl
-AC_PROVIDE([AC_PROG_RANLIB])dnl
AC_PROVIDE([AC_PROG_CC])dnl
AC_PROVIDE([AC_PROG_CPP])dnl
-# This file is generated from configure.in by Autoconf. DO NOT EDIT!
+AC_PROVIDE([_AS_PATH_SEPARATOR_PREPARE])dnl
+AC_PROVIDE([_AS_TEST_PREPARE])dnl
+AC_PROVIDE([_AS_BASENAME_PREPARE])dnl
+AC_PROVIDE([_AS_ME_PREPARE])dnl
+AC_PROVIDE([_AS_LINENO_PREPARE])dnl
+AC_PROVIDE([AS_SHELL_FN_as_fn_set_status])dnl
+AC_PROVIDE([AS_SHELL_FN_as_fn_exit])dnl
+AC_PROVIDE([AS_SHELL_FN_as_fn_arith])dnl
+AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_compile])dnl
+define([AS_MESSAGE_LOG_FD],5)dnl
+define([AS_MESSAGE_FD],6)dnl
+dnl Ripped out of AS_INIT, which does more cruft we do not want.
+m4_wrap([m4_divert_pop([BODY])[]])
+m4_divert_push([BODY])[]dnl
+dnl End of ripped out of AS_INIT.
+# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
+define([_AC_LANG], [C])dnl
])dnl
dnl
dnl Check for a symbol
dnl
-AC_DEFUN(AC_CHECK_SYMBOL, [dnl
+AC_DEFUN([AC_CHECK_SYMBOL], [dnl
AC_MSG_CHECKING(for $1)
AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl
AC_TRY_LINK(,
AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl
dnl
-dnl These modifications are to allow for an empty cross compiler tree.
-dnl In the situation that cross-linking is impossible, the variable
-dnl `cross_linkable' will be substituted with "yes".
-AC_DEFUN(AC_PROG_CC_LOCAL,
-[AC_BEFORE([$0], [AC_PROG_CPP])dnl
-AC_CHECK_PROG(CC, gcc, gcc)
-if test -z "$CC"; then
- AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
- test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
-fi
-
-AC_PROG_CC_WORKS_LOCAL
-AC_PROG_CC_GNU
-
-dnl The following differs from the AC_PROG_CC macro in autoconf. Since
-dnl we require a recent version of gcc to be used we do not need to go
-dnl into lengths and test for bugs in old versions. It must be gcc 2.7
-dnl or above.
-if test $ac_cv_prog_gcc = yes; then
- GCC=yes
-
-dnl Check the version
- cat > conftest.c <<EOF
-#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
- yes;
-#endif
-EOF
- if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
- if test -z "$CFLAGS"; then
- CFLAGS="-g -O2"
- fi
- else
- AC_MSG_ERROR([We require GNU CC version 2.7 or newer])
- fi
+dnl Locate a program and check that its version is acceptable.
+dnl AC_PROG_CHECK_VER(var, namelist, version-switch,
+dnl [version-extract-regexp], version-glob [, do-if-fail])
+AC_DEFUN([AC_CHECK_PROG_VER],
+[AC_CHECK_PROGS([$1], [$2])
+if test -z "[$]$1"; then
+ ac_verc_fail=yes
else
- AC_MSG_ERROR([GNU libc must be compiled using GNU CC])
+ # Found it, now check the version.
+ AC_MSG_CHECKING([version of [$]$1])
+changequote(<<,>>)dnl
+ ac_prog_version=`<<$>>$1 $3 2>&1 ifelse(<<$4>>,,,
+ <<| sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'>>)`
+ case $ac_prog_version in
+ '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+ <<$5>>)
+changequote([,])dnl
+ ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+ *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+
+ esac
+ AC_MSG_RESULT([$ac_prog_version])
fi
+ifelse([$6],,,
+[if test $ac_verc_fail = yes; then
+ $6
+fi])
])
-AC_DEFUN(AC_PROG_CC_WORKS_LOCAL,
-[AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works])
-AC_LANG_SAVE
-AC_LANG_C
-AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)
-AC_LANG_RESTORE
-AC_MSG_RESULT($ac_cv_prog_cc_works)
-if test $ac_cv_prog_cc_works = no; then
- cross_linkable=no
- ac_cv_prog_cc_cross=yes
-dnl AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
-else
- cross_linkable=yes
-fi
-AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])
-AC_MSG_RESULT($ac_cv_prog_cc_cross)
-AC_SUBST(cross_linkable)
-cross_compiling=$ac_cv_prog_cc_cross
+dnl These modifications are to allow for an empty cross compiler tree.
+define([_AC_COMPILER_EXEEXT], [EXEEXT=
])
-AC_DEFUN(LIBC_PROG_FOO_GNU,
+AC_DEFUN([LIBC_PROG_FOO_GNU],
[# Most GNU programs take a -v and spit out some text including
# the word 'GNU'. Some try to read stdin, so give them /dev/null.
-if $1 -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
+if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
$2
else
$3
-fi])
+fi
+rm -fr contest*])
-AC_DEFUN(LIBC_PROG_BINUTILS,
+AC_DEFUN([LIBC_PROG_BINUTILS],
[# Was a --with-binutils option given?
if test -n "$path_binutils"; then
# Make absolute; ensure a single trailing slash.
path_binutils=`(cd $path_binutils; pwd) | sed 's%/*$%/%'`
- CC="$CC -B$with_binutils"
+ CC="$CC -B$path_binutils"
fi
-AS=`$CC -print-file-name=as`
-LD=`$CC -print-file-name=ld`
+AS=`$CC -print-prog-name=as`
+LD=`$CC -print-prog-name=ld`
+AR=`$CC -print-prog-name=ar`
+AC_SUBST(AR)
+OBJDUMP=`$CC -print-prog-name=objdump`
+AC_SUBST(OBJDUMP)
+OBJCOPY=`$CC -print-prog-name=objcopy`
+AC_SUBST(OBJCOPY)
+GPROF=`$CC -print-prog-name=gprof`
+AC_SUBST(GPROF)
# Determine whether we are using GNU binutils.
AC_CACHE_CHECK(whether $AS is GNU as, libc_cv_prog_as_gnu,
AC_CACHE_CHECK(whether $LD is GNU ld, libc_cv_prog_ld_gnu,
[LIBC_PROG_FOO_GNU($LD, libc_cv_prog_ld_gnu=yes, libc_cv_prog_ld_gnu=no)])
-gnu_ld=$libc_cv_prog_ld_gnu])
+gnu_ld=$libc_cv_prog_ld_gnu
+])
+
+dnl Run a static link test with -nostdlib -nostartfiles.
+dnl LIBC_TRY_LINK_STATIC([code], [action-if-true], [action-if-false])
+AC_DEFUN([LIBC_TRY_LINK_STATIC],
+[cat > conftest.c <<EOF
+int _start (void) { return 0; }
+int __start (void) { return 0; }
+$1
+EOF
+AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -o conftest
+ conftest.c -static -nostartfiles -nostdlib
+ 1>&AS_MESSAGE_LOG_FD])],
+ [$2], [$3])
+rm -f conftest*])
+
+dnl Test a compiler option or options with an empty input file.
+dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false])
+AC_DEFUN([LIBC_TRY_CC_OPTION],
+[AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])],
+ [$2], [$3])])
+
+dnl Find and source sysdeps/*/preconfigure.
+dnl LIBC_PRECONFIGURE([$srcdir], [for])
+AC_DEFUN([LIBC_PRECONFIGURE], [dnl
+if frags=`ls -d $1/sysdeps/*/preconfigure 2> /dev/null`
+then
+ AC_MSG_CHECKING($2 preconfigure fragments)
+ for frag in $frags; do
+ name=`echo "$frag" | sed 's@/[[^/]]*[$]@@;s@^.*/@@'`
+ echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
+ . "$frag"
+ done
+ AC_MSG_RESULT()
+fi])
+
+# These two macros are taken from GCC's config/acx.m4.
+dnl Support the --with-pkgversion configure option.
+dnl ACX_PKGVERSION(default-pkgversion)
+AC_DEFUN([ACX_PKGVERSION],[
+ AC_ARG_WITH(pkgversion,
+ AS_HELP_STRING([--with-pkgversion=PKG],
+ [Use PKG in the version string in place of "$1"]),
+ [case "$withval" in
+ yes) AC_MSG_ERROR([package version not specified]) ;;
+ no) PKGVERSION= ;;
+ *) PKGVERSION="($withval) " ;;
+ esac],
+ PKGVERSION="($1) "
+ )
+ PKGVERSION_TEXI=`echo "$PKGVERSION" | sed 's/@/@@/g'`
+ AC_SUBST(PKGVERSION)
+ AC_SUBST(PKGVERSION_TEXI)
+])
+
+dnl Support the --with-bugurl configure option.
+dnl ACX_BUGURL(default-bugurl)
+AC_DEFUN([ACX_BUGURL],[
+ AC_ARG_WITH(bugurl,
+ AS_HELP_STRING([--with-bugurl=URL],
+ [Direct users to URL to report a bug]),
+ [case "$withval" in
+ yes) AC_MSG_ERROR([bug URL not specified]) ;;
+ no) BUGURL=
+ ;;
+ *) BUGURL="$withval"
+ ;;
+ esac],
+ BUGURL="$1"
+ )
+ case ${BUGURL} in
+ "")
+ REPORT_BUGS_TO=
+ REPORT_BUGS_TEXI=
+ ;;
+ *)
+ REPORT_BUGS_TO="<$BUGURL>"
+ REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`}
+ ;;
+ esac;
+ AC_SUBST(REPORT_BUGS_TO)
+ AC_SUBST(REPORT_BUGS_TEXI)
+])
+
+dnl Check linker option support.
+dnl LIBC_LINKER_FEATURE([ld_option], [cc_option], [action-if-true], [action-if-false])
+AC_DEFUN([LIBC_LINKER_FEATURE],
+[AC_MSG_CHECKING([for linker that supports $1])
+libc_linker_feature=no
+if test x"$gnu_ld" = x"yes"; then
+ libc_linker_check=`$LD -v --help 2>/dev/null | grep "\$1"`
+ if test -n "$libc_linker_check"; then
+ cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+ if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ $2 -nostdlib -nostartfiles
+ -fPIC -shared -o conftest.so conftest.c
+ 1>&AS_MESSAGE_LOG_FD])
+ then
+ libc_linker_feature=yes
+ fi
+ rm -f conftest*
+ fi
+fi
+if test $libc_linker_feature = yes; then
+ $3
+else
+ $4
+fi
+AC_MSG_RESULT($libc_linker_feature)])
+
+dnl Add a makefile variable, with value set from a shell string
+dnl (expanded by the shell inside double quotes), to config.make.
+dnl LIBC_CONFIG_VAR(make-variable, shell-value)
+AC_DEFUN([LIBC_CONFIG_VAR],
+[config_vars="$config_vars
+$1 = $2"])
+
+dnl Check that function FUNC was inlined as a builtin. The code fragment
+dnl CODE is compiled with additional options CC_OPTION. If FUNC is
+dnl not found in the assembly then it is assumed the compiler has support
+dnl for this builtin and has inlined the call. If the compiler has the
+dnl feature then ACTION-IF-TRUE is called, otherwise ACTION-IF-FALSE.
+dnl It is up to the caller to provide a CC_OPTION that ensures the
+dnl builtin is inlined if present.
+dnl Warning: This may not work for some machines. For example on ARM the
+dnl ABI dictates that some functions should not be inlined and instead
+dnl should be provided by a compiler helper library e.g. __aeabi_memcpy.
+dnl This is done to reduce code size.
+dnl LIBC_COMPILER_BUILTIN([func], [code], [cc_option], [action-if-true], [action-if-false])
+AC_DEFUN([LIBC_COMPILER_BUILTIN_INLINED],
+[AC_MSG_CHECKING([for compiler support of inlined builtin function $1])
+libc_compiler_builtin_inlined=no
+cat > conftest.c <<EOF
+int _start (void) { $2 return 0; }
+EOF
+if ! AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ $3 -nostdlib -nostartfiles
+ -S conftest.c -o - | fgrep "$1"
+ 1>&AS_MESSAGE_LOG_FD])
+then
+ libc_compiler_builtin_inlined=yes
+fi
+rm -f conftest*
+if test $libc_compiler_builtin_inlined = yes; then
+ $4
+else
+ $5
+fi
+AC_MSG_RESULT($libc_compiler_builtin_inlined)])
+
+dnl Default to slibdir named SLIBDIR instead of "lib", and rtlddir
+dnl named RTLDDIR instead of "lib". This is used to put 64-bit
+dnl libraries in /lib64.
+dnl LIBC_SLIBDIR_RTLDDIR([slibdir], [rtlddir])
+AC_DEFUN([LIBC_SLIBDIR_RTLDDIR],
+[test -n "$libc_cv_slibdir" ||
+case "$prefix" in
+/usr | /usr/)
+ libc_cv_slibdir='/$1'
+ libc_cv_rtlddir='/$2'
+ if test "$libdir" = '${exec_prefix}/lib'; then
+ libdir='${exec_prefix}/$1';
+ # Locale data can be shared between 32-bit and 64-bit libraries.
+ libc_cv_complocaledir='${exec_prefix}/lib/locale'
+ fi
+ ;;
+esac])
projects / thirdparty / glibc.git / blobdiff