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.
20 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
21 m4_define([_AC_ARG_VAR_PRECIOUS],[])
23 m4_undefine([_AC_ARG_VAR_PRECIOUS])
24 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
31 AC_CONFIG_MACRO_DIR([m4])
35 AC_CHECK_HEADERS(sys/mman.h)
37 AC_FUNC_MMAP_BLACKLIST
39 dnl The -no-testsuite modules omit the test subdir.
40 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
45 TARGET=ALPHA; TARGETDIR=alpha;
46 # Support 128-bit long double, changable via command-line switch.
47 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
51 TARGET=ARM; TARGETDIR=arm
54 amd64-*-freebsd* | amd64-*-openbsd*)
55 TARGET=X86_64; TARGETDIR=x86
59 TARGET=X86_64; TARGETDIR=x86
63 TARGET=AVR32; TARGETDIR=avr32
67 TARGET=LIBFFI_CRIS; TARGETDIR=cris
71 TARGET=FRV; TARGETDIR=frv
74 hppa*-*-linux* | parisc*-*-linux*)
75 TARGET=PA_LINUX; TARGETDIR=pa
78 TARGET=PA64_HPUX; TARGETDIR=pa
81 TARGET=PA_HPUX; TARGETDIR=pa
84 i?86-*-freebsd* | i?86-*-openbsd*)
85 TARGET=X86_FREEBSD; TARGETDIR=x86
87 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
88 TARGET=X86_WIN32; TARGETDIR=x86
89 # All mingw/cygwin/win32 builds require this for sharedlib
90 AM_LTLDFLAGS="-no-undefined"
93 TARGET=X86_DARWIN; TARGETDIR=x86
95 i?86-*-solaris2.1[[0-9]]*)
96 TARGET=X86_64; TARGETDIR=x86
99 TARGET=X86; TARGETDIR=x86
103 TARGET=IA64; TARGETDIR=ia64
107 TARGET=M32R; TARGETDIR=m32r
111 TARGET=M68K; TARGETDIR=m68k
114 mips-sgi-irix5.* | mips-sgi-irix6.*)
115 TARGET=MIPS; TARGETDIR=mips
118 # Support 128-bit long double for NewABI.
119 HAVE_LONG_DOUBLE='defined(__mips64)'
120 TARGET=MIPS; TARGETDIR=mips
124 TARGET=MOXIE; TARGETDIR=moxie
127 powerpc*-*-linux* | powerpc-*-sysv*)
128 TARGET=POWERPC; TARGETDIR=powerpc
131 TARGET=POWERPC; TARGETDIR=powerpc
134 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
136 powerpc-*-aix* | rs6000-*-aix*)
137 TARGET=POWERPC_AIX; TARGETDIR=powerpc
140 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
143 TARGET=POWERPC; TARGETDIR=powerpc
146 s390-*-* | s390x-*-*)
147 TARGET=S390; TARGETDIR=s390
150 sh-*-* | sh[[34]]*-*-*)
151 TARGET=SH; TARGETDIR=sh
154 TARGET=SH64; TARGETDIR=sh64
158 TARGET=SPARC; TARGETDIR=sparc
162 TARGET=X86_DARWIN; TARGETDIR=x86
165 x86_64-*-cygwin* | x86_64-*-mingw*)
166 TARGET=X86_WIN64; TARGETDIR=x86
170 TARGET=X86_64; TARGETDIR=x86
174 AC_SUBST(AM_RUNTESTFLAGS)
175 AC_SUBST(AM_LTLDFLAGS)
177 if test $TARGETDIR = unknown; then
178 AC_MSG_ERROR(["libffi has not been ported to $host."])
181 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
182 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
183 AM_CONDITIONAL(X86, test x$TARGET = xX86)
184 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
185 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
186 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
187 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
188 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
189 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
190 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
191 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
192 AM_CONDITIONAL(MOXIE, test x$TARGET = xMOXIE)
193 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
194 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
195 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
196 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
197 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
198 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
199 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
200 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
201 AM_CONDITIONAL(S390, test x$TARGET = xS390)
202 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
203 AM_CONDITIONAL(SH, test x$TARGET = xSH)
204 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
205 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
206 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
207 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
210 AC_CHECK_FUNCS(memcpy)
213 AC_CHECK_SIZEOF(double)
214 AC_CHECK_SIZEOF(long double)
216 # Also AC_SUBST this variable for ffi.h.
217 if test -z "$HAVE_LONG_DOUBLE"; then
219 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
220 if test $ac_cv_sizeof_long_double != 0; then
222 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
226 AC_SUBST(HAVE_LONG_DOUBLE)
230 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
231 libffi_cv_as_cfi_pseudo_op, [
232 libffi_cv_as_cfi_pseudo_op=unknown
233 AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
234 [libffi_cv_as_cfi_pseudo_op=yes],
235 [libffi_cv_as_cfi_pseudo_op=no])
237 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
238 AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
239 [Define if your assembler supports .cfi_* directives.])
242 if test x$TARGET = xSPARC; then
243 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
244 libffi_cv_as_sparc_ua_pcrel, [
245 save_CFLAGS="$CFLAGS"
246 save_LDFLAGS="$LDFLAGS"
247 CFLAGS="$CFLAGS -fpic"
248 LDFLAGS="$LDFLAGS -shared"
249 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
250 [libffi_cv_as_sparc_ua_pcrel=yes],
251 [libffi_cv_as_sparc_ua_pcrel=no])
252 CFLAGS="$save_CFLAGS"
253 LDFLAGS="$save_LDFLAGS"])
254 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
255 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
256 [Define if your assembler and linker support unaligned PC relative relocs.])
259 AC_CACHE_CHECK([assembler .register pseudo-op support],
260 libffi_cv_as_register_pseudo_op, [
261 libffi_cv_as_register_pseudo_op=unknown
262 # Check if we have .register
263 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
264 [libffi_cv_as_register_pseudo_op=yes],
265 [libffi_cv_as_register_pseudo_op=no])
267 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
268 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
269 [Define if your assembler supports .register.])
273 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
274 AC_CACHE_CHECK([assembler supports pc related relocs],
275 libffi_cv_as_x86_pcrel, [
276 libffi_cv_as_x86_pcrel=yes
277 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
278 if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
279 libffi_cv_as_x86_pcrel=no
282 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
283 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
284 [Define if your assembler supports PC relative relocs.])
287 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
288 libffi_cv_as_ascii_pseudo_op, [
289 libffi_cv_as_ascii_pseudo_op=unknown
290 # Check if we have .ascii
291 AC_TRY_COMPILE([asm (".ascii \"string\"");],,
292 [libffi_cv_as_ascii_pseudo_op=yes],
293 [libffi_cv_as_ascii_pseudo_op=no])
295 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
296 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
297 [Define if your assembler supports .ascii.])
300 AC_CACHE_CHECK([assembler .string pseudo-op support],
301 libffi_cv_as_string_pseudo_op, [
302 libffi_cv_as_string_pseudo_op=unknown
303 # Check if we have .string
304 AC_TRY_COMPILE([asm (".string \"string\"");],,
305 [libffi_cv_as_string_pseudo_op=yes],
306 [libffi_cv_as_string_pseudo_op=no])
308 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
309 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
310 [Define if your assembler supports .string.])
315 *-apple-darwin10* | *-*-freebsd* | *-*-openbsd* | *-pc-solaris*)
316 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
317 [Cannot use malloc on this target, so, we revert to
322 if test x$TARGET = xX86_64; then
323 AC_CACHE_CHECK([assembler supports unwind section type],
324 libffi_cv_as_x86_64_unwind_section_type, [
325 libffi_cv_as_x86_64_unwind_section_type=yes
326 echo '.section .eh_frame,"a",@unwind' > conftest.s
327 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
328 libffi_cv_as_x86_64_unwind_section_type=no
331 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
332 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
333 [Define if your assembler supports unwind section type.])
337 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
338 libffi_cv_ro_eh_frame, [
339 libffi_cv_ro_eh_frame=no
340 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
341 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
342 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
343 libffi_cv_ro_eh_frame=yes
344 elif grep '.section.*eh_frame.*#alloc' conftest.c \
345 | grep -v '#write' > /dev/null; then
346 libffi_cv_ro_eh_frame=yes
351 if test "x$libffi_cv_ro_eh_frame" = xyes; then
352 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
353 [Define if .eh_frame sections should be read-only.])
354 AC_DEFINE(EH_FRAME_FLAGS, "a",
355 [Define to the flags needed for the .section .eh_frame directive.])
357 AC_DEFINE(EH_FRAME_FLAGS, "aw",
358 [Define to the flags needed for the .section .eh_frame directive.])
361 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
362 libffi_cv_hidden_visibility_attribute, [
363 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
364 libffi_cv_hidden_visibility_attribute=no
365 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
366 if grep '\.hidden.*foo' conftest.s >/dev/null; then
367 libffi_cv_hidden_visibility_attribute=yes
372 if test $libffi_cv_hidden_visibility_attribute = yes; then
373 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
374 [Define if __attribute__((visibility("hidden"))) is supported.])
378 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
380 #define FFI_HIDDEN(name) .hidden name
382 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
386 #define FFI_HIDDEN(name)
399 [ --enable-debug debugging mode],
400 if test "$enable_debug" = "yes"; then
401 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
404 AC_ARG_ENABLE(structs,
405 [ --disable-structs omit code for struct support],
406 if test "$enable_structs" = "no"; then
407 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
410 AC_ARG_ENABLE(raw-api,
411 [ --disable-raw-api make the raw api unavailable],
412 if test "$enable_raw_api" = "no"; then
413 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
416 AC_ARG_ENABLE(purify-safety,
417 [ --enable-purify-safety purify-safe mode],
418 if test "$enable_purify_safety" = "yes"; then
419 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
422 if test -n "$with_cross_host" &&
423 test x"$with_cross_host" != x"no"; then
424 toolexecdir='$(exec_prefix)/$(target_alias)'
425 toolexeclibdir='$(toolexecdir)/lib'
427 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
428 toolexeclibdir='$(libdir)'
430 multi_os_directory=`$CC -print-multi-os-directory`
431 case $multi_os_directory in
432 .) ;; # Avoid trailing /.
433 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
435 AC_SUBST(toolexecdir)
436 AC_SUBST(toolexeclibdir)
438 if test "${multilib}" = "yes"; then
439 multilib_arg="--enable-multilib"
444 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
445 AC_CONFIG_COMMANDS(src, [
446 test -d src || mkdir src
447 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
448 ], [TARGETDIR="$TARGETDIR"])
450 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
452 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)