libobjc/configure.ac

   1 # Process this file with autoconf to produce a configure script.
   2 #   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
   3 #   Free Software Foundation, Inc.
   4 #   Originally contributed by Dave Love (d.love@dl.ac.uk).
   5 #
   6 #This file is part of GCC.
   7 #
   8 #GCC is free software; you can redistribute it and/or modify
   9 #it under the terms of the GNU General Public License as published by
  10 #the Free Software Foundation; either version 2, or (at your option)
  11 #any later version.
  12 #
  13 #GCC is distributed in the hope that it will be useful,
  14 #but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #GNU General Public License for more details.
  17 #
  18 #You should have received a copy of the GNU General Public License
  19 #along with GCC; see the file COPYING.  If not, write to
  20 #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21 #02111-1307, USA.
  22
  23 AC_PREREQ(2.59)
  24 AC_INIT
  25 AC_CONFIG_SRCDIR([objc/objc.h])
  26
  27 # We need the following definitions because AC_PROG_LIBTOOL relies on them
  28 PACKAGE=libobjc
  29 # Version is pulled out to make it a bit easier to change using sed.
  30 VERSION=1:0:0
  31 AC_SUBST(VERSION)
  32
  33 # This works around the fact that libtool configuration may change LD
  34 # for this particular configuration, but some shells, instead of
  35 # keeping the changes in LD private, export them just because LD is
  36 # exported.
  37 ORIGINAL_LD_FOR_MULTILIBS=$LD
  38
  39 # -------
  40 # Options
  41 # -------
  42
  43 # Default to --enable-multilib
  44 AC_ARG_ENABLE(multilib,
  45   [  --enable-multilib       build hella library versions (default)],
  46   [case "${enableval}" in
  47     yes) multilib=yes ;;
  48     no)  multilib=no ;;
  49     *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
  50    esac],
  51   [multilib=yes])
  52
  53 # We use these options to decide which functions to include.
  54 AC_ARG_WITH(target-subdir,
  55 [  --with-target-subdir=SUBDIR
  56                            configuring in a subdirectory])
  57 AC_ARG_WITH(cross-host,
  58 [  --with-cross-host=HOST  configuring with a cross compiler])
  59
  60 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
  61 AC_ARG_ENABLE(version-specific-runtime-libs,
  62 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
  63 [case "$enableval" in
  64  yes) version_specific_libs=yes ;;
  65  no)  version_specific_libs=no ;;
  66  *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
  67  esac],
  68 [version_specific_libs=no])
  69 AC_MSG_RESULT($version_specific_libs)
  70
  71 AC_ARG_ENABLE(objc-gc,
  72 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
  73                           the GNU Objective-C runtime.],
  74 [case $enable_objc_gc in
  75   no) OBJC_BOEHM_GC='' ;;
  76   *) OBJC_BOEHM_GC=libobjc_gc.la ;;
  77 esac],
  78 [OBJC_BOEHM_GC=''])
  79 AC_SUBST(OBJC_BOEHM_GC)
  80
  81 # -----------
  82 # Directories
  83 # -----------
  84
  85 # When building with srcdir == objdir, links to the source files will
  86 # be created in directories within the target_subdir.  We have to
  87 # adjust toplevel_srcdir accordingly, so that configure finds
  88 # install-sh and other auxiliary files that live in the top-level
  89 # source directory.
  90 if test "${srcdir}" = "."; then
  91   if test -z "${with_target_subdir}"; then
  92     toprel=".."
  93   else
  94     if test "${with_target_subdir}" != "."; then
  95       toprel="${with_multisrctop}../.."
  96     else
  97       toprel="${with_multisrctop}.."
  98     fi
  99   fi
 100 else
 101   toprel=".."
 102 fi
 103 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
 104 toplevel_srcdir=\${srcdir}/$toprel
 105 AC_SUBST(toplevel_srcdir)
 106
 107 AC_CANONICAL_SYSTEM
 108 _GCC_TOPLEV_NONCANONICAL_TARGET
 109 AC_SUBST(target_noncanonical)
 110
 111 # Export source directory.
 112 # These need to be absolute paths, yet at the same time need to
 113 # canonicalize only relative paths, because then amd will not unmount
 114 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
 115 case $srcdir in
 116   [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
 117   *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
 118 esac
 119 AC_SUBST(glibcpp_srcdir)
 120
 121 # Process the option "--enable-version-specific-runtime-libs"
 122 gcc_version_trigger=${srcdir}/../gcc/version.c
 123 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
 124 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 125 AC_SUBST(gcc_version)
 126
 127 # Calculate toolexeclibdir
 128 # Also toolexecdir, though it's only used in toolexeclibdir
 129 case ${version_specific_libs} in
 130   yes)
 131     # Need the gcc compiler version to know where to install libraries
 132     # and header files if --enable-version-specific-runtime-libs option
 133     # is selected.
 134     toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
 135     toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
 136     ;;
 137   no)
 138     if test -n "$with_cross_host" &&
 139        test x"$with_cross_host" != x"no"; then
 140       # Install a library built with a cross compiler in tooldir, not libdir.
 141       toolexecdir='$(exec_prefix)/$(target_noncanonical)'
 142       toolexeclibdir='$(toolexecdir)/lib'
 143     else
 144       toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
 145       toolexeclibdir='$(libdir)'
 146     fi
 147     multi_os_directory=`$CC -print-multi-os-directory`
 148     case $multi_os_directory in
 149       .) ;; # Avoid trailing /.
 150       *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
 151     esac
 152     ;;
 153 esac
 154 AC_SUBST(toolexecdir)
 155 AC_SUBST(toolexeclibdir)
 156
 157 # Figure out if we want to name the include directory and the
 158 #  library name changes differently.
 159 includedirname=include
 160 libext=
 161 case "${host}" in
 162   *-darwin*)
 163     # Darwin is the only target so far that needs a different include directory.
 164     includedirname=include-gnu-runtime
 165     libext=-gnu
 166     ;;
 167 esac
 168 AC_SUBST(includedirname)
 169 AC_SUBST(libext)
 170
 171 # --------
 172 # Programs
 173 # --------
 174
 175 GCC_NO_EXECUTABLES
 176
 177 # We must force CC to /not/ be a precious variable; otherwise
 178 # the wrong, non-multilib-adjusted value will be used in multilibs.
 179 # As a side effect, we have to subst CFLAGS ourselves.
 180 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
 181 m4_define([_AC_ARG_VAR_PRECIOUS],[])
 182 AC_PROG_CC
 183 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 184
 185 AC_SUBST(CFLAGS)
 186
 187 AC_CHECK_TOOL(AS, as)
 188 AC_CHECK_TOOL(AR, ar)
 189 AC_CHECK_TOOL(RANLIB, ranlib, :)
 190 AC_PROG_INSTALL
 191
 192 # Disable shared libs by default
 193 AC_DISABLE_SHARED
 194 # Enable Win32 DLL on MS Windows - FIXME
 195 AC_LIBTOOL_WIN32_DLL
 196
 197 AC_PROG_LIBTOOL
 198
 199 AC_PROG_MAKE_SET
 200
 201 # -------
 202 # Headers
 203 # -------
 204
 205 # Sanity check for the cross-compilation case:
 206 AC_CHECK_HEADER(stdio.h,:,
 207   [AC_MSG_ERROR([Can't find stdio.h.
 208 You must have a usable C system for the target already installed, at least
 209 including headers and, preferably, the library, before you can configure
 210 the Objective C runtime system.  If necessary, install gcc now with
 211 \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
 212
 213 AC_HEADER_STDC
 214
 215 AC_CHECK_HEADERS(sched.h)
 216
 217 # -----------
 218 # Miscellanea
 219 # -----------
 220
 221 # Determine CFLAGS for gthread.
 222 # FIXME: the current implementation is dependent on the 'r' variable
 223 # passed down from the top level
 224 AC_CACHE_CHECK([for gthread cflags],objc_cv_gthread_flags,
 225 [if test -f "$r"/gcc/Makefile
 226 then
 227   objc_cv_gthread_flags=`grep \^GTHREAD_FLAGS "$r"/gcc/Makefile | awk -F= '{ print $2 }'`
 228 else
 229   AC_MSG_ERROR([not found])
 230 fi])
 231 GTHREAD_FLAGS=$objc_cv_gthread_flags
 232 AC_SUBST(GTHREAD_FLAGS)
 233
 234 # ------
 235 # Output
 236 # ------
 237
 238 AC_CONFIG_FILES([Makefile])
 239
 240 AC_CONFIG_COMMANDS([default],
 241 [[if test -n "$CONFIG_FILES"; then
 242   if test -n "${with_target_subdir}"; then
 243     # FIXME: We shouldn't need to set ac_file
 244     ac_file=Makefile
 245     LD="${ORIGINAL_LD_FOR_MULTILIBS}"
 246     . ${toplevel_srcdir}/config-ml.in
 247   fi
 248 fi]],
 249 [[srcdir=${srcdir}
 250 host=${host}
 251 target=${target}
 252 with_target_subdir=${with_target_subdir}
 253 with_multisubdir=${with_multisubdir}
 254 ac_configure_args="--enable-multilib ${ac_configure_args}"
 255 toplevel_srcdir=${toplevel_srcdir}
 256 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 257 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
 258 ]])
 259
 260 AC_OUTPUT