1 dnl Process this with autoconf to create configure
5 AC_INIT([libffi], [3.0.11-rc1], [http://sourceware.org/libffi.html])
6 AC_CONFIG_HEADERS([fficonfig.h])
9 target_alias=${target_alias-$host_alias}
11 . ${srcdir}/configure.host
17 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
18 # We must force CC to /not/ be precious variables; otherwise
19 # the wrong, non-multilib-adjusted value will be used in multilibs.
20 # As a side effect, we have to subst CFLAGS ourselves.
21 # Also save and restore CFLAGS, since AC_PROG_CC will come up with
22 # defaults of its own if none are provided.
24 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
25 m4_define([_AC_ARG_VAR_PRECIOUS],[])
29 m4_undefine([_AC_ARG_VAR_PRECIOUS])
30 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
37 AC_CONFIG_MACRO_DIR([m4])
41 if test "x$GCC" = "xyes"; then
42 CFLAGS="$CFLAGS -fexceptions"
47 AC_CHECK_HEADERS(sys/mman.h)
49 AC_FUNC_MMAP_BLACKLIST
51 dnl The -no-testsuite modules omit the test subdir.
52 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
57 TARGET=ALPHA; TARGETDIR=alpha;
58 # Support 128-bit long double, changeable via command-line switch.
59 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
63 TARGET=ARM; TARGETDIR=arm
66 amd64-*-freebsd* | amd64-*-openbsd*)
67 TARGET=X86_64; TARGETDIR=x86
71 TARGET=X86_64; TARGETDIR=x86
75 TARGET=AVR32; TARGETDIR=avr32
79 TARGET=LIBFFI_CRIS; TARGETDIR=cris
83 TARGET=FRV; TARGETDIR=frv
86 hppa*-*-linux* | parisc*-*-linux* | hppa*-*-openbsd*)
87 TARGET=PA_LINUX; TARGETDIR=pa
90 TARGET=PA64_HPUX; TARGETDIR=pa
93 TARGET=PA_HPUX; TARGETDIR=pa
96 i?86-*-freebsd* | i?86-*-openbsd*)
97 TARGET=X86_FREEBSD; TARGETDIR=x86
99 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2* | i?86-*-interix*)
100 TARGET=X86_WIN32; TARGETDIR=x86
101 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
102 # We must also check with_cross_host to decide if this is a native
103 # or cross-build and select where to install dlls appropriately.
104 if test -n "$with_cross_host" &&
105 test x"$with_cross_host" != x"no"; then
106 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
108 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
112 TARGET=X86_DARWIN; TARGETDIR=x86
114 i?86-*-solaris2.1[[0-9]]*)
115 TARGET=X86_64; TARGETDIR=x86
118 TARGET=X86; TARGETDIR=x86
122 TARGET=IA64; TARGETDIR=ia64
126 TARGET=M32R; TARGETDIR=m32r
130 TARGET=M68K; TARGETDIR=m68k
133 mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
134 TARGET=MIPS; TARGETDIR=mips
136 mips*-*-linux* | mips*-*-openbsd*)
137 # Support 128-bit long double for NewABI.
138 HAVE_LONG_DOUBLE='defined(__mips64)'
139 TARGET=MIPS; TARGETDIR=mips
142 powerpc*-*-linux* | powerpc-*-sysv*)
143 TARGET=POWERPC; TARGETDIR=powerpc
146 TARGET=POWERPC; TARGETDIR=powerpc
148 powerpc-*-darwin* | powerpc64-*-darwin*)
149 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
151 powerpc-*-aix* | rs6000-*-aix*)
152 TARGET=POWERPC_AIX; TARGETDIR=powerpc
154 powerpc-*-freebsd* | powerpc-*-openbsd*)
155 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
157 powerpc64-*-freebsd*)
158 TARGET=POWERPC; TARGETDIR=powerpc
161 TARGET=POWERPC; TARGETDIR=powerpc
164 s390-*-* | s390x-*-*)
165 TARGET=S390; TARGETDIR=s390
168 sh-*-* | sh[[34]]*-*-*)
169 TARGET=SH; TARGETDIR=sh
172 TARGET=SH64; TARGETDIR=sh64
176 TARGET=SPARC; TARGETDIR=sparc
180 TARGET=X86_DARWIN; TARGETDIR=x86
183 x86_64-*-cygwin* | x86_64-*-mingw*)
184 TARGET=X86_WIN64; TARGETDIR=x86
188 TARGET=X86_64; TARGETDIR=x86
192 AC_SUBST(AM_RUNTESTFLAGS)
193 AC_SUBST(AM_LTLDFLAGS)
195 if test $TARGETDIR = unknown; then
196 AC_MSG_ERROR(["libffi has not been ported to $host."])
199 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
200 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
201 AM_CONDITIONAL(X86, test x$TARGET = xX86)
202 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
203 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
204 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
205 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
206 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
207 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
208 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
209 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
210 AM_CONDITIONAL(MOXIE, test x$TARGET = xMOXIE)
211 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
212 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
213 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
214 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
215 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
216 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
217 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
218 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
219 AM_CONDITIONAL(S390, test x$TARGET = xS390)
220 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
221 AM_CONDITIONAL(SH, test x$TARGET = xSH)
222 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
223 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
224 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
225 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
228 AC_CHECK_FUNCS(memcpy)
231 AC_CHECK_SIZEOF(double)
232 AC_CHECK_SIZEOF(long double)
234 # Also AC_SUBST this variable for ffi.h.
235 if test -z "$HAVE_LONG_DOUBLE"; then
237 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
238 if test $ac_cv_sizeof_long_double != 0; then
240 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
244 AC_SUBST(HAVE_LONG_DOUBLE)
248 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
249 libffi_cv_as_cfi_pseudo_op, [
250 libffi_cv_as_cfi_pseudo_op=unknown
251 AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
252 [libffi_cv_as_cfi_pseudo_op=yes],
253 [libffi_cv_as_cfi_pseudo_op=no])
255 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
256 AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
257 [Define if your assembler supports .cfi_* directives.])
260 if test x$TARGET = xSPARC; then
261 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
262 libffi_cv_as_sparc_ua_pcrel, [
263 save_CFLAGS="$CFLAGS"
264 save_LDFLAGS="$LDFLAGS"
265 CFLAGS="$CFLAGS -fpic"
266 LDFLAGS="$LDFLAGS -shared"
267 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
268 [libffi_cv_as_sparc_ua_pcrel=yes],
269 [libffi_cv_as_sparc_ua_pcrel=no])
270 CFLAGS="$save_CFLAGS"
271 LDFLAGS="$save_LDFLAGS"])
272 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
273 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
274 [Define if your assembler and linker support unaligned PC relative relocs.])
277 AC_CACHE_CHECK([assembler .register pseudo-op support],
278 libffi_cv_as_register_pseudo_op, [
279 libffi_cv_as_register_pseudo_op=unknown
280 # Check if we have .register
281 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
282 [libffi_cv_as_register_pseudo_op=yes],
283 [libffi_cv_as_register_pseudo_op=no])
285 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
286 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
287 [Define if your assembler supports .register.])
291 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
292 AC_CACHE_CHECK([assembler supports pc related relocs],
293 libffi_cv_as_x86_pcrel, [
294 libffi_cv_as_x86_pcrel=no
295 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
296 if $CC $CFLAGS -c conftest.s > /dev/null; then
297 libffi_cv_as_x86_pcrel=yes
300 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
301 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
302 [Define if your assembler supports PC relative relocs.])
305 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
306 libffi_cv_as_ascii_pseudo_op, [
307 libffi_cv_as_ascii_pseudo_op=unknown
308 # Check if we have .ascii
309 AC_TRY_COMPILE([asm (".ascii \\"string\\"");],,
310 [libffi_cv_as_ascii_pseudo_op=yes],
311 [libffi_cv_as_ascii_pseudo_op=no])
313 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
314 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
315 [Define if your assembler supports .ascii.])
318 AC_CACHE_CHECK([assembler .string pseudo-op support],
319 libffi_cv_as_string_pseudo_op, [
320 libffi_cv_as_string_pseudo_op=unknown
321 # Check if we have .string
322 AC_TRY_COMPILE([asm (".string \\"string\\"");],,
323 [libffi_cv_as_string_pseudo_op=yes],
324 [libffi_cv_as_string_pseudo_op=no])
326 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
327 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
328 [Define if your assembler supports .string.])
332 if test x$TARGET = xX86_WIN64; then
334 if test "x$sys_symbol_underscore" = xyes; then
335 AC_DEFINE(SYMBOL_UNDERSCORE, 1, [Define if symbols are underscored.])
340 FFI_EXEC_TRAMPOLINE_TABLE=0
343 FFI_EXEC_TRAMPOLINE_TABLE=1
344 AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1,
345 [Cannot use PROT_EXEC on this target, so, we revert to
348 *-apple-darwin10* | *-*-freebsd* | *-*-openbsd* | *-pc-solaris*)
349 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
350 [Cannot use malloc on this target, so, we revert to
354 AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)
355 AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)
357 if test x$TARGET = xX86_64; then
358 AC_CACHE_CHECK([assembler supports unwind section type],
359 libffi_cv_as_x86_64_unwind_section_type, [
360 libffi_cv_as_x86_64_unwind_section_type=yes
361 echo '.section .eh_frame,"a",@unwind' > conftest.s
362 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
363 libffi_cv_as_x86_64_unwind_section_type=no
366 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
367 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
368 [Define if your assembler supports unwind section type.])
372 if test "x$GCC" = "xyes"; then
373 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
374 libffi_cv_ro_eh_frame, [
375 libffi_cv_ro_eh_frame=no
376 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
377 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
378 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
379 libffi_cv_ro_eh_frame=yes
380 elif grep '.section.*eh_frame.*#alloc' conftest.c \
381 | grep -v '#write' > /dev/null; then
382 libffi_cv_ro_eh_frame=yes
387 if test "x$libffi_cv_ro_eh_frame" = xyes; then
388 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
389 [Define if .eh_frame sections should be read-only.])
390 AC_DEFINE(EH_FRAME_FLAGS, "a",
391 [Define to the flags needed for the .section .eh_frame directive. ])
393 AC_DEFINE(EH_FRAME_FLAGS, "aw",
394 [Define to the flags needed for the .section .eh_frame directive. ])
397 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
398 libffi_cv_hidden_visibility_attribute, [
399 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c
400 libffi_cv_hidden_visibility_attribute=no
401 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
402 if grep '\.hidden.*foo' conftest.s >/dev/null; then
403 libffi_cv_hidden_visibility_attribute=yes
408 if test $libffi_cv_hidden_visibility_attribute = yes; then
409 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
410 [Define if __attribute__((visibility("hidden"))) is supported.])
415 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
417 #define FFI_HIDDEN(name) .hidden name
419 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
423 #define FFI_HIDDEN(name)
436 [ --enable-debug debugging mode],
437 if test "$enable_debug" = "yes"; then
438 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
440 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
442 AC_ARG_ENABLE(structs,
443 [ --disable-structs omit code for struct support],
444 if test "$enable_structs" = "no"; then
445 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
448 AC_ARG_ENABLE(raw-api,
449 [ --disable-raw-api make the raw api unavailable],
450 if test "$enable_raw_api" = "no"; then
451 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
454 AC_ARG_ENABLE(purify-safety,
455 [ --enable-purify-safety purify-safe mode],
456 if test "$enable_purify_safety" = "yes"; then
457 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
460 # These variables are only ever used when we cross-build to X86_WIN32.
461 # And we only support this with GCC, so...
462 if test x"$GCC" != x"no"; then
463 if test -n "$with_cross_host" &&
464 test x"$with_cross_host" != x"no"; then
465 toolexecdir='$(exec_prefix)/$(target_alias)'
466 toolexeclibdir='$(toolexecdir)/lib'
468 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
469 toolexeclibdir='$(libdir)'
471 multi_os_directory=`$CC -print-multi-os-directory`
472 case $multi_os_directory in
473 .) ;; # Avoid trailing /.
474 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
476 AC_SUBST(toolexecdir)
477 AC_SUBST(toolexeclibdir)
480 if test "${multilib}" = "yes"; then
481 multilib_arg="--enable-multilib"
486 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
487 AC_CONFIG_COMMANDS(src, [
488 test -d src || mkdir src
489 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
490 ], [TARGETDIR="$TARGETDIR"])
492 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
494 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)