1 # Process this file with autoconf to produce a configure script.
2 # Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 # Originally contributed by Dave Love (d.love@dl.ac.uk).
5 #This file is part of GCC.
7 #GCC is free software; you can redistribute it and/or modify
8 #it under the terms of the GNU General Public License as published by
9 #the Free Software Foundation; either version 3, or (at your option)
12 #GCC is distributed in the hope that it will be useful,
13 #but WITHOUT ANY WARRANTY; without even the implied warranty of
14 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 #GNU General Public License for more details.
17 #You should have received a copy of the GNU General Public License
18 #along with GCC; see the file COPYING3. If not see
19 #<http://www.gnu.org/licenses/>.
21 m4_include([../config/pkg.m4])
24 AC_INIT(package-unused, version-unused,, libobjc)
25 AC_CONFIG_SRCDIR([objc/objc.h])
28 # We need the following definitions because AC_PROG_LIBTOOL relies on them
30 # Version is pulled out to make it a bit easier to change using sed.
34 # This works around the fact that libtool configuration may change LD
35 # for this particular configuration, but some shells, instead of
36 # keeping the changes in LD private, export them just because LD is
38 ORIGINAL_LD_FOR_MULTILIBS=$LD
44 # We use these options to decide which functions to include.
45 AC_ARG_WITH(target-subdir,
46 [ --with-target-subdir=SUBDIR
47 configuring in a subdirectory])
48 AC_ARG_WITH(cross-host,
49 [ --with-cross-host=HOST configuring with a cross compiler])
51 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
52 AC_ARG_ENABLE(version-specific-runtime-libs,
53 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
55 yes) version_specific_libs=yes ;;
56 no) version_specific_libs=no ;;
57 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
59 [version_specific_libs=no])
60 AC_MSG_RESULT($version_specific_libs)
66 # Find the rest of the source tree framework.
67 AM_ENABLE_MULTILIB(, ..)
70 ACX_NONCANONICAL_TARGET
72 # Export source directory.
73 # These need to be absolute paths, yet at the same time need to
74 # canonicalize only relative paths, because then amd will not unmount
75 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
77 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
78 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
80 AC_SUBST(glibcpp_srcdir)
82 # Calculate toolexeclibdir
83 # Also toolexecdir, though it's only used in toolexeclibdir
84 case ${version_specific_libs} in
86 # Need the gcc compiler version to know where to install libraries
87 # and header files if --enable-version-specific-runtime-libs option
89 toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
90 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
93 if test -n "$with_cross_host" &&
94 test x"$with_cross_host" != x"no"; then
95 # Install a library built with a cross compiler in tooldir, not libdir.
96 toolexecdir='$(exec_prefix)/$(target_noncanonical)'
97 toolexeclibdir='$(toolexecdir)/lib'
99 toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
100 toolexeclibdir='$(libdir)'
102 multi_os_directory=`$CC -print-multi-os-directory`
103 case $multi_os_directory in
104 .) ;; # Avoid trailing /.
105 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
109 AC_SUBST(toolexecdir)
110 AC_SUBST(toolexeclibdir)
112 # Figure out if we want to name the include directory and the
113 # library name changes differently.
114 includedirname=include
118 # Darwin is the only target so far that needs a different include directory.
119 includedirname=include-gnu-runtime
123 AC_SUBST(includedirname)
126 AC_CONFIG_HEADERS(config.h)
134 # We must force CC to /not/ be a precious variable; otherwise
135 # the wrong, non-multilib-adjusted value will be used in multilibs.
136 # As a side effect, we have to subst CFLAGS ourselves.
137 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
138 m4_define([_AC_ARG_VAR_PRECIOUS],[])
140 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
142 # extra LD Flags which are required for targets
146 # Darwin needs -single_module when linking libobjc
147 extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
150 # Tell libtool to build DLLs on Windows
151 extra_ldflags_libobjc='$(lt_host_flags)'
154 AC_SUBST(extra_ldflags_libobjc)
158 AC_CHECK_TOOL(AS, as)
159 AC_CHECK_TOOL(AR, ar)
160 AC_CHECK_TOOL(RANLIB, ranlib, :)
165 # Enable Win32 DLL on MS Windows - FIXME
178 # Sanity check for the cross-compilation case:
179 AC_CHECK_HEADER(stdio.h,:,
180 [AC_MSG_ERROR([Can't find stdio.h.
181 You must have a usable C system for the target already installed, at least
182 including headers and, preferably, the library, before you can configure
183 the Objective C runtime system. If necessary, install gcc now with
184 \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
188 AC_CHECK_HEADERS(sched.h)
194 # Check if we have thread-local storage
197 gt_BITFIELD_TYPE_MATTERS
203 AC_ARG_ENABLE(objc-gc,
204 [AS_HELP_STRING([--enable-objc-gc],
205 [enable use of Boehm's garbage collector with the
206 GNU Objective-C runtime])])
207 AC_ARG_WITH([target-bdw-gc],
208 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
209 [specify prefix directory for installed bdw-gc package.
210 Equivalent to --with-target-bdw-gc-include=PATH/include
211 plus --with-target-bdw-gc-lib=PATH/lib])])
212 AC_ARG_WITH([target-bdw-gc-include],
213 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
214 [specify directories for installed bdw-gc include files])])
215 AC_ARG_WITH([target-bdw-gc-lib],
216 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
217 [specify directories for installed bdw-gc library])])
219 case "$enable_objc_gc" in
224 AC_MSG_CHECKING([for bdw garbage collector])
225 if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
226 dnl no bdw-gw options, fall back to the bdw-gc pkg-config module
227 PKG_CHECK_EXISTS(bdw-gc,
228 AC_MSG_RESULT([using bdw-gc pkg-config module]),
229 AC_MSG_ERROR([no --with-target-bdw-gc options and no bdw-gc pkg-config module found]))
231 dnl bdw-gw options passed by configure flags
232 if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
233 AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
234 elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
235 AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
237 AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
239 mldir=`${CC-gcc} --print-multi-directory 2>/dev/null`
241 if test "x$with_target_bdw_gc" != x; then
242 for i in `echo $with_target_bdw_gc | tr ',' ' '`; do
244 *=*) sd=${i%%=*}; d=${i#*=} ;;
247 if test "$mldir" = "$sd"; then
251 if test "x$bdw_val" = x; then
252 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc])
254 bdw_inc_dir="$bdw_val/include"
255 bdw_lib_dir="$bdw_val/lib"
258 if test "x$with_target_bdw_gc_include" != x; then
259 for i in `echo $with_target_bdw_gc_include | tr ',' ' '`; do
261 *=*) sd=${i%%=*}; d=${i#*=} ;;
264 if test "$mldir" = "$sd"; then
268 if test "x$bdw_val" = x; then
269 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
271 bdw_inc_dir="$bdw_val"
274 if test "x$with_target_bdw_gc_lib" != x; then
275 for i in `echo $with_target_bdw_gc_lib | tr ',' ' '`; do
277 *=*) sd=${i%%=*}; d=${i#*=} ;;
280 if test "$mldir" = "$sd"; then
284 if test "x$bdw_val" = x; then
285 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
287 bdw_lib_dir="$bdw_val"
289 if test "x$bdw_inc_dir" = x; then
290 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
292 if test "x$bdw_lib_dir" = x; then
293 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
295 BDW_GC_CFLAGS="-I$bdw_inc_dir"
296 BDW_GC_LIBS="-L$bdw_lib_dir -lgc"
297 AC_MSG_RESULT([found])
300 AC_MSG_CHECKING([for system boehm-gc])
303 CFLAGS="$CFLAGS $BDW_GC_CFLAGS"
304 LIBS="$LIBS $BDW_GC_LIBS"
305 dnl the link test is not good enough for ARM32 multilib detection,
306 dnl first check to link, then to run
308 [AC_LANG_PROGRAM([#include <gc/gc.h>],[GC_init()])],
310 AC_RUN_IFELSE([AC_LANG_SOURCE([[
317 [system_bdw_gc_found=yes],
318 [system_bdw_gc_found=no],
319 dnl assume no system boehm-gc for cross builds ...
320 [system_bdw_gc_found=no]
323 [system_bdw_gc_found=no])
326 if test x$enable_objc_gc = xauto && test x$system_bdw_gc_found = xno; then
327 AC_MSG_WARN([system bdw-gc not found, not building libobjc_gc])
329 elif test x$enable_objc_gc = xyes && test x$system_bdw_gc_found = xno; then
330 AC_MSG_ERROR([system bdw-gc required but not found])
333 AC_MSG_RESULT([found])
337 if test "$use_bdw_gc" = no; then
340 OBJC_BOEHM_GC_INCLUDES=''
341 OBJC_BOEHM_GC_LIBS=''
343 OBJC_GCFLAGS='-DOBJC_WITH_GC=1'
344 OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la'
345 OBJC_BOEHM_GC_INCLUDES=$BDW_GC_CFLAGS
346 OBJC_BOEHM_GC_LIBS=$BDW_GC_LIBS
348 AC_SUBST(OBJC_GCFLAGS)
349 AC_SUBST(OBJC_BOEHM_GC)
350 AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
351 AC_SUBST(OBJC_BOEHM_GC_LIBS)
357 if test ${multilib} = yes; then
358 multilib_arg="--enable-multilib"
363 AC_CONFIG_FILES([Makefile])