| # 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 |