1 dnl Process this with autoconf to create configure
5 AC_INIT([libffi], [3.0.10rc0], [http://gcc.gnu.org/bugs.html])
6 AC_CONFIG_HEADERS([fficonfig.h])
9 target_alias=${target_alias-$host_alias}
11 . ${srcdir}/configure.host
15 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
16 # We must force CC to /not/ be precious variables; otherwise
17 # the wrong, non-multilib-adjusted value will be used in multilibs.
18 # As a side effect, we have to subst CFLAGS ourselves.
19 # Also save and restore CFLAGS, since AC_PROG_CC will come up with
20 # defaults of its own if none are provided.
22 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
23 m4_define([_AC_ARG_VAR_PRECIOUS],[])
27 m4_undefine([_AC_ARG_VAR_PRECIOUS])
28 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
35 AC_CONFIG_MACRO_DIR([m4])
39 AC_CHECK_HEADERS(sys/mman.h)
41 AC_FUNC_MMAP_BLACKLIST
43 dnl The -no-testsuite modules omit the test subdir.
44 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
49 TARGET=ALPHA; TARGETDIR=alpha;
50 # Support 128-bit long double, changeable via command-line switch.
51 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
55 TARGET=ARM; TARGETDIR=arm
58 amd64-*-freebsd* | amd64-*-openbsd*)
59 TARGET=X86_64; TARGETDIR=x86
63 TARGET=X86_64; TARGETDIR=x86
67 TARGET=AVR32; TARGETDIR=avr32
71 TARGET=LIBFFI_CRIS; TARGETDIR=cris
75 TARGET=FRV; TARGETDIR=frv
78 hppa*-*-linux* | parisc*-*-linux*)
79 TARGET=PA_LINUX; TARGETDIR=pa
82 TARGET=PA64_HPUX; TARGETDIR=pa
85 TARGET=PA_HPUX; TARGETDIR=pa
88 i?86-*-freebsd* | i?86-*-openbsd*)
89 TARGET=X86_FREEBSD; TARGETDIR=x86
91 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2*)
92 TARGET=X86_WIN32; TARGETDIR=x86
93 # All mingw/cygwin/win32 builds require this for sharedlib
94 AM_LTLDFLAGS="-no-undefined"
97 TARGET=X86_DARWIN; TARGETDIR=x86
99 i?86-*-solaris2.1[[0-9]]*)
100 TARGET=X86_64; TARGETDIR=x86
103 TARGET=X86; TARGETDIR=x86
107 TARGET=IA64; TARGETDIR=ia64
111 TARGET=M32R; TARGETDIR=m32r
115 TARGET=M68K; TARGETDIR=m68k
118 mips-sgi-irix5.* | mips-sgi-irix6.*)
119 TARGET=MIPS; TARGETDIR=mips
122 # Support 128-bit long double for NewABI.
123 HAVE_LONG_DOUBLE='defined(__mips64)'
124 TARGET=MIPS; TARGETDIR=mips
128 TARGET=MOXIE; TARGETDIR=moxie
131 powerpc*-*-linux* | powerpc-*-sysv*)
132 TARGET=POWERPC; TARGETDIR=powerpc
135 TARGET=POWERPC; TARGETDIR=powerpc
138 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
140 powerpc-*-aix* | rs6000-*-aix*)
141 TARGET=POWERPC_AIX; TARGETDIR=powerpc
144 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
147 TARGET=POWERPC; TARGETDIR=powerpc
150 s390-*-* | s390x-*-*)
151 TARGET=S390; TARGETDIR=s390
154 sh-*-* | sh[[34]]*-*-*)
155 TARGET=SH; TARGETDIR=sh
158 TARGET=SH64; TARGETDIR=sh64
162 TARGET=SPARC; TARGETDIR=sparc
166 TARGET=X86_DARWIN; TARGETDIR=x86
169 x86_64-*-cygwin* | x86_64-*-mingw*)
170 TARGET=X86_WIN64; TARGETDIR=x86
174 TARGET=X86_64; TARGETDIR=x86
178 AC_SUBST(AM_RUNTESTFLAGS)
179 AC_SUBST(AM_LTLDFLAGS)
181 if test $TARGETDIR = unknown; then
182 AC_MSG_ERROR(["libffi has not been ported to $host."])
185 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
186 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
187 AM_CONDITIONAL(X86, test x$TARGET = xX86)
188 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
189 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
190 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
191 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
192 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
193 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
194 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
195 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
196 AM_CONDITIONAL(MOXIE, test x$TARGET = xMOXIE)
197 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
198 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
199 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
200 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
201 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
202 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
203 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
204 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
205 AM_CONDITIONAL(S390, test x$TARGET = xS390)
206 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
207 AM_CONDITIONAL(SH, test x$TARGET = xSH)
208 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
209 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
210 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
211 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
214 AC_CHECK_FUNCS(memcpy)
217 AC_CHECK_SIZEOF(double)
218 AC_CHECK_SIZEOF(long double)
220 # Also AC_SUBST this variable for ffi.h.
221 if test -z "$HAVE_LONG_DOUBLE"; then
223 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
224 if test $ac_cv_sizeof_long_double != 0; then
226 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
230 AC_SUBST(HAVE_LONG_DOUBLE)
234 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
235 libffi_cv_as_cfi_pseudo_op, [
236 libffi_cv_as_cfi_pseudo_op=unknown
237 AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
238 [libffi_cv_as_cfi_pseudo_op=yes],
239 [libffi_cv_as_cfi_pseudo_op=no])
241 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
242 AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
243 [Define if your assembler supports .cfi_* directives.])
246 if test x$TARGET = xSPARC; then
247 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
248 libffi_cv_as_sparc_ua_pcrel, [
249 save_CFLAGS="$CFLAGS"
250 save_LDFLAGS="$LDFLAGS"
251 CFLAGS="$CFLAGS -fpic"
252 LDFLAGS="$LDFLAGS -shared"
253 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
254 [libffi_cv_as_sparc_ua_pcrel=yes],
255 [libffi_cv_as_sparc_ua_pcrel=no])
256 CFLAGS="$save_CFLAGS"
257 LDFLAGS="$save_LDFLAGS"])
258 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
259 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
260 [Define if your assembler and linker support unaligned PC relative relocs.])
263 AC_CACHE_CHECK([assembler .register pseudo-op support],
264 libffi_cv_as_register_pseudo_op, [
265 libffi_cv_as_register_pseudo_op=unknown
266 # Check if we have .register
267 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
268 [libffi_cv_as_register_pseudo_op=yes],
269 [libffi_cv_as_register_pseudo_op=no])
271 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
272 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
273 [Define if your assembler supports .register.])
277 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
278 AC_CACHE_CHECK([assembler supports pc related relocs],
279 libffi_cv_as_x86_pcrel, [
280 libffi_cv_as_x86_pcrel=yes
281 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
282 if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
283 libffi_cv_as_x86_pcrel=no
286 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
287 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
288 [Define if your assembler supports PC relative relocs.])
291 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
292 libffi_cv_as_ascii_pseudo_op, [
293 libffi_cv_as_ascii_pseudo_op=unknown
294 # Check if we have .ascii
295 AC_TRY_COMPILE([asm (".ascii \"string\"");],,
296 [libffi_cv_as_ascii_pseudo_op=yes],
297 [libffi_cv_as_ascii_pseudo_op=no])
299 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
300 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
301 [Define if your assembler supports .ascii.])
304 AC_CACHE_CHECK([assembler .string pseudo-op support],
305 libffi_cv_as_string_pseudo_op, [
306 libffi_cv_as_string_pseudo_op=unknown
307 # Check if we have .string
308 AC_TRY_COMPILE([asm (".string \"string\"");],,
309 [libffi_cv_as_string_pseudo_op=yes],
310 [libffi_cv_as_string_pseudo_op=no])
312 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
313 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
314 [Define if your assembler supports .string.])
319 *-apple-darwin10* | *-*-freebsd* | *-*-openbsd* | *-pc-solaris*)
320 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
321 [Cannot use malloc on this target, so, we revert to
326 if test x$TARGET = xX86_64; then
327 AC_CACHE_CHECK([assembler supports unwind section type],
328 libffi_cv_as_x86_64_unwind_section_type, [
329 libffi_cv_as_x86_64_unwind_section_type=yes
330 echo '.section .eh_frame,"a",@unwind' > conftest.s
331 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
332 libffi_cv_as_x86_64_unwind_section_type=no
335 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
336 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
337 [Define if your assembler supports unwind section type.])
341 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
342 libffi_cv_ro_eh_frame, [
343 libffi_cv_ro_eh_frame=no
344 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
345 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
346 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
347 libffi_cv_ro_eh_frame=yes
348 elif grep '.section.*eh_frame.*#alloc' conftest.c \
349 | grep -v '#write' > /dev/null; then
350 libffi_cv_ro_eh_frame=yes
355 if test "x$libffi_cv_ro_eh_frame" = xyes; then
356 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
357 [Define if .eh_frame sections should be read-only.])
358 AC_DEFINE(EH_FRAME_FLAGS, "a",
359 [Define to the flags needed for the .section .eh_frame directive.])
361 AC_DEFINE(EH_FRAME_FLAGS, "aw",
362 [Define to the flags needed for the .section .eh_frame directive.])
365 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
366 libffi_cv_hidden_visibility_attribute, [
367 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
368 libffi_cv_hidden_visibility_attribute=no
369 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
370 if grep '\.hidden.*foo' conftest.s >/dev/null; then
371 libffi_cv_hidden_visibility_attribute=yes
376 if test $libffi_cv_hidden_visibility_attribute = yes; then
377 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
378 [Define if __attribute__((visibility("hidden"))) is supported.])
382 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
384 #define FFI_HIDDEN(name) .hidden name
386 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
390 #define FFI_HIDDEN(name)
403 [ --enable-debug debugging mode],
404 if test "$enable_debug" = "yes"; then
405 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
407 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
409 AC_ARG_ENABLE(structs,
410 [ --disable-structs omit code for struct support],
411 if test "$enable_structs" = "no"; then
412 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
415 AC_ARG_ENABLE(raw-api,
416 [ --disable-raw-api make the raw api unavailable],
417 if test "$enable_raw_api" = "no"; then
418 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
421 AC_ARG_ENABLE(purify-safety,
422 [ --enable-purify-safety purify-safe mode],
423 if test "$enable_purify_safety" = "yes"; then
424 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
427 if test -n "$with_cross_host" &&
428 test x"$with_cross_host" != x"no"; then
429 toolexecdir='$(exec_prefix)/$(target_alias)'
430 toolexeclibdir='$(toolexecdir)/lib'
432 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
433 toolexeclibdir='$(libdir)'
435 multi_os_directory=`$CC -print-multi-os-directory`
436 case $multi_os_directory in
437 .) ;; # Avoid trailing /.
438 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
440 AC_SUBST(toolexecdir)
441 AC_SUBST(toolexeclibdir)
443 if test "${multilib}" = "yes"; then
444 multilib_arg="--enable-multilib"
449 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
450 AC_CONFIG_COMMANDS(src, [
451 test -d src || mkdir src
452 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
453 ], [TARGETDIR="$TARGETDIR"])
455 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
457 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)