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- # Process this file with autoconf to produce a configure script.
- # Copyright (C) 1994-2022 Free Software Foundation, Inc.
- # Originally contributed by Dave Love (d.love@dl.ac.uk).
- #
- #This file is part of GCC.
- #
- #GCC 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 3, or (at your option)
- #any later version.
- #
- #GCC 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 GCC; see the file COPYING3. If not see
- #<http://www.gnu.org/licenses/>.
- AC_INIT(package-unused, version-unused,, libobjc)
- AC_CONFIG_SRCDIR([objc/objc.h])
- GCC_TOPLEV_SUBDIRS
- # We need the following definitions because AC_PROG_LIBTOOL relies on them
- PACKAGE=libobjc
- # Version is pulled out to make it a bit easier to change using sed.
- VERSION=4:0:0
- AC_SUBST(VERSION)
- # This works around the fact that libtool configuration may change LD
- # for this particular configuration, but some shells, instead of
- # keeping the changes in LD private, export them just because LD is
- # exported.
- ORIGINAL_LD_FOR_MULTILIBS=$LD
- # -------
- # Options
- # -------
- # We use these options to decide which functions to include.
- AC_ARG_WITH(target-subdir,
- [ --with-target-subdir=SUBDIR
- configuring in a subdirectory])
- AC_ARG_WITH(cross-host,
- [ --with-cross-host=HOST configuring with a cross compiler])
- AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
- AC_ARG_ENABLE(version-specific-runtime-libs,
- [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
- [case "$enableval" in
- yes) version_specific_libs=yes ;;
- no) version_specific_libs=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
- esac],
- [version_specific_libs=no])
- AC_MSG_RESULT($version_specific_libs)
- # -----------
- # Directories
- # -----------
- # Find the rest of the source tree framework.
- AM_ENABLE_MULTILIB(, ..)
- AC_CANONICAL_SYSTEM
- ACX_NONCANONICAL_TARGET
- # Export source directory.
- # These need to be absolute paths, yet at the same time need to
- # canonicalize only relative paths, because then amd will not unmount
- # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
- case $srcdir in
- [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
- *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
- esac
- AC_SUBST(glibcpp_srcdir)
- GCC_WITH_TOOLEXECLIBDIR
- # Calculate toolexeclibdir
- # Also toolexecdir, though it's only used in toolexeclibdir
- case ${version_specific_libs} in
- yes)
- # Need the gcc compiler version to know where to install libraries
- # and header files if --enable-version-specific-runtime-libs option
- # is selected.
- toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
- toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
- ;;
- no)
- if test -n "$with_cross_host" &&
- test x"$with_cross_host" != x"no"; then
- # Install a library built with a cross compiler in tooldir, not libdir.
- toolexecdir='$(exec_prefix)/$(target_noncanonical)'
- case ${with_toolexeclibdir} in
- no)
- toolexeclibdir='$(toolexecdir)/lib'
- ;;
- *)
- toolexeclibdir=${with_toolexeclibdir}
- ;;
- esac
- else
- toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
- toolexeclibdir='$(libdir)'
- fi
- multi_os_directory=`$CC -print-multi-os-directory`
- case $multi_os_directory in
- .) ;; # Avoid trailing /.
- *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
- esac
- ;;
- esac
- AC_SUBST(toolexecdir)
- AC_SUBST(toolexeclibdir)
- # Figure out if we want to name the include directory and the
- # library name changes differently.
- includedirname=include
- libsuffix=
- case "${host}" in
- *-darwin*)
- # Darwin is the only target so far that needs a different include directory.
- includedirname=include-gnu-runtime
- libsuffix=-gnu
- ;;
- esac
- AC_SUBST(includedirname)
- AC_SUBST(libsuffix)
- AC_CONFIG_HEADERS(config.h)
- # --------
- # Programs
- # --------
- GCC_NO_EXECUTABLES
- # We must force CC to /not/ be a precious variable; otherwise
- # the wrong, non-multilib-adjusted value will be used in multilibs.
- # As a side effect, we have to subst CFLAGS ourselves.
- m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
- m4_define([_AC_ARG_VAR_PRECIOUS],[])
- AC_PROG_CC
- m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
- # extra LD Flags which are required for targets
- ACX_LT_HOST_FLAGS
- case "${host}" in
- *-darwin*)
- # Darwin needs -single_module when linking libobjc
- extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
- ;;
- *-cygwin*|*-mingw*)
- # Tell libtool to build DLLs on Windows
- extra_ldflags_libobjc='$(lt_host_flags)'
- ;;
- esac
- AC_SUBST(extra_ldflags_libobjc)
- # Add CET specific flags if CET is enabled
- GCC_CET_FLAGS(CET_FLAGS)
- XCFLAGS="$XCFLAGS $CET_FLAGS"
- AC_SUBST(CFLAGS)
- AC_SUBST(XCFLAGS)
- AC_CHECK_TOOL(AS, as)
- AC_CHECK_TOOL(AR, ar)
- AC_CHECK_TOOL(RANLIB, ranlib, :)
- AC_PROG_INSTALL
- AM_MAINTAINER_MODE
- # Enable Win32 DLL on MS Windows - FIXME
- AC_LIBTOOL_WIN32_DLL
- AC_PROG_LIBTOOL
- AM_PROG_CC_C_O
- AC_PROG_MAKE_SET
- # -------
- # Headers
- # -------
- # Sanity check for the cross-compilation case:
- AC_CHECK_HEADER(stdio.h,:,
- [AC_MSG_ERROR([Can't find stdio.h.
- You must have a usable C system for the target already installed, at least
- including headers and, preferably, the library, before you can configure
- the Objective C runtime system. If necessary, install gcc now with
- \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
- AC_HEADER_STDC
- AC_CHECK_HEADERS(sched.h)
- # -----------
- # Miscellanea
- # -----------
- # Check if we have thread-local storage
- GCC_CHECK_TLS
- gt_BITFIELD_TYPE_MATTERS
- # -----------
- # boehm-gc
- # -----------
- AC_ARG_ENABLE(objc-gc,
- [AS_HELP_STRING([--enable-objc-gc],
- [enable use of Boehm's garbage collector with the
- GNU Objective-C runtime])],,enable_objc_gc=no)
- AC_ARG_WITH([target-bdw-gc],
- [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
- [specify prefix directory for installed bdw-gc package.
- Equivalent to --with-target-bdw-gc-include=PATH/include
- plus --with-target-bdw-gc-lib=PATH/lib])])
- AC_ARG_WITH([target-bdw-gc-include],
- [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
- [specify directories for installed bdw-gc include files])])
- AC_ARG_WITH([target-bdw-gc-lib],
- [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
- [specify directories for installed bdw-gc library])])
-
- case "$enable_objc_gc" in
- no)
- use_bdw_gc=no
- ;;
- *)
- AC_MSG_CHECKING([for bdw garbage collector])
- if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
- dnl no bdw-gw options, assuming bdw-gc in default locations
- BDW_GC_CFLAGS=
- BDW_GC_LIBS="-lgc"
- else
- dnl bdw-gw options passed by configure flags
- if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
- AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
- elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
- AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
- else
- AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
- fi
- mldir=`${CC-gcc} --print-multi-directory 2>/dev/null`
- bdw_val=
- if test "x$with_target_bdw_gc" != x; then
- for i in `echo $with_target_bdw_gc | tr ',' ' '`; do
- case "$i" in
- *=*) sd=${i%%=*}; d=${i#*=} ;;
- *) sd=.; d=$i ;;
- esac
- if test "$mldir" = "$sd"; then
- bdw_val=$d
- fi
- done
- if test "x$bdw_val" = x; then
- AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc])
- fi
- bdw_inc_dir="$bdw_val/include"
- bdw_lib_dir="$bdw_val/lib"
- fi
- bdw_val=
- if test "x$with_target_bdw_gc_include" != x; then
- for i in `echo $with_target_bdw_gc_include | tr ',' ' '`; do
- case "$i" in
- *=*) sd=${i%%=*}; d=${i#*=} ;;
- *) sd=.; d=$i; fallback=$i ;;
- esac
- if test "$mldir" = "$sd"; then
- bdw_val=$d
- fi
- done
- if test "x$bdw_val" = x && test "x$bdw_inc_dir" = x && test "x$fallback" != x; then
- bdw_inc_dir="$fallback"
- elif test "x$bdw_val" = x; then
- AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
- else
- bdw_inc_dir="$bdw_val"
- fi
- fi
- bdw_val=
- if test "x$with_target_bdw_gc_lib" != x; then
- for i in `echo $with_target_bdw_gc_lib | tr ',' ' '`; do
- case "$i" in
- *=*) sd=${i%%=*}; d=${i#*=} ;;
- *) sd=.; d=$i ;;
- esac
- if test "$mldir" = "$sd"; then
- bdw_val=$d
- fi
- done
- if test "x$bdw_val" = x; then
- AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
- fi
- bdw_lib_dir="$bdw_val"
- fi
- if test "x$bdw_inc_dir" = x; then
- AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
- fi
- if test "x$bdw_lib_dir" = x; then
- AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
- fi
- BDW_GC_CFLAGS="-I$bdw_inc_dir"
- if test -f $bdw_lib_dir/libgc.la; then
- BDW_GC_LIBS="$bdw_lib_dir/libgc.la"
- else
- BDW_GC_LIBS="-L$bdw_lib_dir -lgc"
- fi
- AC_MSG_RESULT([found])
- fi
- case "$BDW_GC_LIBS" in
- *libgc.la)
- use_bdw_gc=yes
- ;;
- *)
- AC_MSG_CHECKING([for system boehm-gc])
- save_CFLAGS=$CFLAGS
- save_LIBS=$LIBS
- CFLAGS="$CFLAGS $BDW_GC_CFLAGS"
- LIBS="$LIBS $BDW_GC_LIBS"
- dnl the link test is not good enough for ARM32 multilib detection,
- dnl first check to link, then to run
- AC_LINK_IFELSE(
- [AC_LANG_PROGRAM([#include <gc/gc.h>],[GC_init()])],
- [
- AC_RUN_IFELSE([AC_LANG_SOURCE([[
- #include <gc/gc.h>
- int main() {
- GC_init();
- return 0;
- }
- ]])],
- [system_bdw_gc_found=yes],
- [system_bdw_gc_found=no],
- dnl assume no system boehm-gc for cross builds ...
- [system_bdw_gc_found=no]
- )
- ],
- [system_bdw_gc_found=no])
- CFLAGS=$save_CFLAGS
- LIBS=$save_LIBS
- if test x$enable_objc_gc = xauto && test x$system_bdw_gc_found = xno; then
- AC_MSG_WARN([system bdw-gc not found, not building libobjc_gc])
- use_bdw_gc=no
- elif test x$enable_objc_gc = xyes && test x$system_bdw_gc_found = xno; then
- AC_MSG_ERROR([system bdw-gc required but not found])
- else
- use_bdw_gc=yes
- AC_MSG_RESULT([found])
- fi
- esac
- esac
- if test "$use_bdw_gc" = no; then
- OBJC_GCFLAGS=''
- OBJC_BOEHM_GC=''
- OBJC_BOEHM_GC_INCLUDES=''
- OBJC_BOEHM_GC_LIBS=''
- else
- OBJC_GCFLAGS='-DOBJC_WITH_GC=1'
- OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la'
- OBJC_BOEHM_GC_INCLUDES=$BDW_GC_CFLAGS
- OBJC_BOEHM_GC_LIBS=$BDW_GC_LIBS
- fi
- AC_SUBST(OBJC_GCFLAGS)
- AC_SUBST(OBJC_BOEHM_GC)
- AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
- AC_SUBST(OBJC_BOEHM_GC_LIBS)
- # Determine what GCC version number to use in filesystem paths.
- GCC_BASE_VER
- # ------
- # Output
- # ------
- if test ${multilib} = yes; then
- multilib_arg="--enable-multilib"
- else
- multilib_arg=
- fi
- AC_CONFIG_FILES([Makefile])
- AC_OUTPUT
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