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='$(lt_host_flags)'
154 AC_SUBST(extra_ldflags_libobjc)
158 AC_CHECK_TOOL(AS, as)
159 AC_CHECK_TOOL(AR, ar)
160 AC_CHECK_TOOL(RANLIB, ranlib, :)
165 # Enable Win32 DLL on MS Windows - FIXME
178 # Sanity check for the cross-compilation case:
179 AC_CHECK_HEADER(stdio.h,:,
180 [AC_MSG_ERROR([Can't find stdio.h.
181 You must have a usable C system for the target already installed, at least
182 including headers and, preferably, the library, before you can configure
183 the Objective C runtime system. If necessary, install gcc now with
184 \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
188 AC_CHECK_HEADERS(sched.h)
194 # Check if we have thread-local storage
197 gt_BITFIELD_TYPE_MATTERS
203 AC_ARG_ENABLE(objc-gc,
204 [AS_HELP_STRING([--enable-objc-gc],
205 [enable use of Boehm's garbage collector with the
206 GNU Objective-C runtime])],,enable_objc_gc=no)
207 AC_ARG_WITH([target-bdw-gc],
208 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
209 [specify prefix directory for installed bdw-gc package.
210 Equivalent to --with-target-bdw-gc-include=PATH/include
211 plus --with-target-bdw-gc-lib=PATH/lib])])
212 AC_ARG_WITH([target-bdw-gc-include],
213 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
214 [specify directories for installed bdw-gc include files])])
215 AC_ARG_WITH([target-bdw-gc-lib],
216 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
217 [specify directories for installed bdw-gc library])])
219 case "$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$with_target_bdw_gc_lib" = x; then
226 dnl no bdw-gw options, fall back to the bdw-gc pkg-config module
227 PKG_CHECK_EXISTS(bdw-gc,
228 [AC_MSG_RESULT([using bdw-gc pkg-config module])
229 BDW_GC_CFLAGS=`$PKG_CONFIG --cflags bdw-gc`
230 BDW_GC_LIBS=`$PKG_CONFIG --libs bdw-gc`],
231 AC_MSG_ERROR([no --with-target-bdw-gc options and no bdw-gc pkg-config module found]))
233 dnl bdw-gw options passed by configure flags
234 if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
235 AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
236 elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
237 AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
239 AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
241 mldir=`${CC-gcc} --print-multi-directory 2>/dev/null`
243 if test "x$with_target_bdw_gc" != x; then
244 for i in `echo $with_target_bdw_gc | tr ',' ' '`; do
246 *=*) sd=${i%%=*}; d=${i#*=} ;;
249 if test "$mldir" = "$sd"; then
253 if test "x$bdw_val" = x; then
254 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc])
256 bdw_inc_dir="$bdw_val/include"
257 bdw_lib_dir="$bdw_val/lib"
260 if test "x$with_target_bdw_gc_include" != x; then
261 for i in `echo $with_target_bdw_gc_include | tr ',' ' '`; do
263 *=*) sd=${i%%=*}; d=${i#*=} ;;
266 if test "$mldir" = "$sd"; then
270 if test "x$bdw_val" = x; then
271 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
273 bdw_inc_dir="$bdw_val"
276 if test "x$with_target_bdw_gc_lib" != x; then
277 for i in `echo $with_target_bdw_gc_lib | tr ',' ' '`; do
279 *=*) sd=${i%%=*}; d=${i#*=} ;;
282 if test "$mldir" = "$sd"; then
286 if test "x$bdw_val" = x; then
287 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
289 bdw_lib_dir="$bdw_val"
291 if test "x$bdw_inc_dir" = x; then
292 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
294 if test "x$bdw_lib_dir" = x; then
295 AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
297 BDW_GC_CFLAGS="-I$bdw_inc_dir"
298 BDW_GC_LIBS="-L$bdw_lib_dir -lgc"
299 AC_MSG_RESULT([found])
302 AC_MSG_CHECKING([for system boehm-gc])
305 CFLAGS="$CFLAGS $BDW_GC_CFLAGS"
306 LIBS="$LIBS $BDW_GC_LIBS"
307 dnl the link test is not good enough for ARM32 multilib detection,
308 dnl first check to link, then to run
310 [AC_LANG_PROGRAM([#include <gc/gc.h>],[GC_init()])],
312 AC_RUN_IFELSE([AC_LANG_SOURCE([[
319 [system_bdw_gc_found=yes],
320 [system_bdw_gc_found=no],
321 dnl assume no system boehm-gc for cross builds ...
322 [system_bdw_gc_found=no]
325 [system_bdw_gc_found=no])
328 if test x$enable_objc_gc = xauto && test x$system_bdw_gc_found = xno; then
329 AC_MSG_WARN([system bdw-gc not found, not building libobjc_gc])
331 elif test x$enable_objc_gc = xyes && test x$system_bdw_gc_found = xno; then
332 AC_MSG_ERROR([system bdw-gc required but not found])
335 AC_MSG_RESULT([found])
339 if test "$use_bdw_gc" = no; then
342 OBJC_BOEHM_GC_INCLUDES=''
343 OBJC_BOEHM_GC_LIBS=''
345 OBJC_GCFLAGS='-DOBJC_WITH_GC=1'
346 OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la'
347 OBJC_BOEHM_GC_INCLUDES=$BDW_GC_CFLAGS
348 OBJC_BOEHM_GC_LIBS=$BDW_GC_LIBS
350 AC_SUBST(OBJC_GCFLAGS)
351 AC_SUBST(OBJC_BOEHM_GC)
352 AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
353 AC_SUBST(OBJC_BOEHM_GC_LIBS)
359 if test ${multilib} = yes; then
360 multilib_arg="--enable-multilib"
365 AC_CONFIG_FILES([Makefile])