1 dnl Process this with autoconf to create configure
5 AC_INIT([libffi], [3.0.14-rc0], [http://github.com/atgreen/libffi/issues])
6 AC_CONFIG_HEADERS([fficonfig.h])
9 target_alias=${target_alias-$host_alias}
11 . ${srcdir}/configure.host
17 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
18 # We must force CC to /not/ be precious variables; otherwise
19 # the wrong, non-multilib-adjusted value will be used in multilibs.
20 # As a side effect, we have to subst CFLAGS ourselves.
21 # Also save and restore CFLAGS, since AC_PROG_CC will come up with
22 # defaults of its own if none are provided.
24 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
25 m4_define([_AC_ARG_VAR_PRECIOUS],[])
29 m4_undefine([_AC_ARG_VAR_PRECIOUS])
30 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
37 AC_CONFIG_MACRO_DIR([m4])
39 # Test for 64-bit build.
40 AC_CHECK_SIZEOF([size_t])
44 # The AX_CFLAGS_WARN_ALL macro doesn't currently work for sunpro
46 if test "$ax_cv_c_compiler_vendor" != "sun"; then
50 if test "x$GCC" = "xyes"; then
51 CFLAGS="$CFLAGS -fexceptions"
55 set CC_FOR_TARGET "$CC"
61 AC_CHECK_HEADERS(sys/mman.h)
63 AC_FUNC_MMAP_BLACKLIST
65 dnl The -no-testsuite modules omit the test subdir.
66 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
69 HAVE_LONG_DOUBLE_VARIANT=0
72 TARGET=AARCH64; TARGETDIR=aarch64
76 TARGET=ALPHA; TARGETDIR=alpha;
77 # Support 128-bit long double, changeable via command-line switch.
78 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
82 TARGET=ARC; TARGETDIR=arc
86 TARGET=ARM; TARGETDIR=arm
89 amd64-*-freebsd* | amd64-*-openbsd*)
90 TARGET=X86_64; TARGETDIR=x86
94 TARGET=X86_64; TARGETDIR=x86
98 TARGET=X86_64; TARGETDIR=x86
102 TARGET=AVR32; TARGETDIR=avr32
106 TARGET=BFIN; TARGETDIR=bfin
110 TARGET=LIBFFI_CRIS; TARGETDIR=cris
114 TARGET=FRV; TARGETDIR=frv
117 hppa*-*-linux* | parisc*-*-linux* | hppa*-*-openbsd*)
118 TARGET=PA_LINUX; TARGETDIR=pa
121 TARGET=PA64_HPUX; TARGETDIR=pa
124 TARGET=PA_HPUX; TARGETDIR=pa
127 i?86-*-freebsd* | i?86-*-openbsd*)
128 TARGET=X86_FREEBSD; TARGETDIR=x86
130 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2* | i?86-*-interix*)
131 TARGET=X86_WIN32; TARGETDIR=x86
132 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
133 # We must also check with_cross_host to decide if this is a native
134 # or cross-build and select where to install dlls appropriately.
135 if test -n "$with_cross_host" &&
136 test x"$with_cross_host" != x"no"; then
137 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
139 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
143 TARGET=X86_DARWIN; TARGETDIR=x86
145 i?86-*-solaris2.1[[0-9]]*)
147 if test $ac_cv_sizeof_size_t = 4; then
155 TARGET=X86_DARWIN; TARGETDIR=x86
158 x86_64-*-cygwin* | x86_64-*-mingw*)
159 TARGET=X86_WIN64; TARGETDIR=x86
160 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
161 # We must also check with_cross_host to decide if this is a native
162 # or cross-build and select where to install dlls appropriately.
163 if test -n "$with_cross_host" &&
164 test x"$with_cross_host" != x"no"; then
165 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
167 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
171 i?86-*-* | x86_64-*-*)
173 if test $ac_cv_sizeof_size_t = 4; then
188 TARGET=IA64; TARGETDIR=ia64
192 TARGET=M32R; TARGETDIR=m32r
196 TARGET=M68K; TARGETDIR=m68k
200 TARGET=M88K; TARGETDIR=m88k
204 TARGET=MICROBLAZE; TARGETDIR=microblaze
208 TARGET=MOXIE; TARGETDIR=moxie
212 TARGET=METAG; TARGETDIR=metag
215 mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
216 TARGET=MIPS; TARGETDIR=mips
218 mips*-*-linux* | mips*-*-openbsd*)
219 # Support 128-bit long double for NewABI.
220 HAVE_LONG_DOUBLE='defined(__mips64)'
221 TARGET=MIPS; TARGETDIR=mips
225 TARGET=NIOS2; TARGETDIR=nios2
228 powerpc*-*-linux* | powerpc-*-sysv*)
229 TARGET=POWERPC; TARGETDIR=powerpc
230 HAVE_LONG_DOUBLE_VARIANT=1
233 TARGET=POWERPC; TARGETDIR=powerpc
236 TARGET=POWERPC; TARGETDIR=powerpc
238 powerpc-*-darwin* | powerpc64-*-darwin*)
239 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
241 powerpc-*-aix* | rs6000-*-aix*)
242 TARGET=POWERPC_AIX; TARGETDIR=powerpc
244 powerpc-*-freebsd* | powerpc-*-openbsd*)
245 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
246 HAVE_LONG_DOUBLE_VARIANT=1
248 powerpc64-*-freebsd*)
249 TARGET=POWERPC; TARGETDIR=powerpc
252 TARGET=POWERPC; TARGETDIR=powerpc
255 s390-*-* | s390x-*-*)
256 TARGET=S390; TARGETDIR=s390
259 sh-*-* | sh[[34]]*-*-*)
260 TARGET=SH; TARGETDIR=sh
263 TARGET=SH64; TARGETDIR=sh64
267 TARGET=SPARC; TARGETDIR=sparc
271 TARGET=TILE; TARGETDIR=tile
275 TARGET=VAX; TARGETDIR=vax
279 TARGET=XTENSA; TARGETDIR=xtensa
284 AC_SUBST(AM_RUNTESTFLAGS)
285 AC_SUBST(AM_LTLDFLAGS)
287 if test $TARGETDIR = unknown; then
288 AC_MSG_ERROR(["libffi has not been ported to $host."])
291 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
292 AM_CONDITIONAL(BFIN, test x$TARGET = xBFIN)
293 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
294 AM_CONDITIONAL(X86, test x$TARGET = xX86)
295 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
296 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
297 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
298 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
299 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
300 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
301 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
302 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
303 AM_CONDITIONAL(M88K, test x$TARGET = xM88K)
304 AM_CONDITIONAL(MICROBLAZE, test x$TARGET = xMICROBLAZE)
305 AM_CONDITIONAL(METAG, test x$TARGET = xMETAG)
306 AM_CONDITIONAL(MOXIE, test x$TARGET = xMOXIE)
307 AM_CONDITIONAL(NIOS2, test x$TARGET = xNIOS2)
308 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
309 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
310 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
311 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
312 AM_CONDITIONAL(AARCH64, test x$TARGET = xAARCH64)
313 AM_CONDITIONAL(ARC, test x$TARGET = xARC)
314 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
315 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
316 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
317 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
318 AM_CONDITIONAL(S390, test x$TARGET = xS390)
319 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
320 AM_CONDITIONAL(SH, test x$TARGET = xSH)
321 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
322 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
323 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
324 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
325 AM_CONDITIONAL(TILE, test x$TARGET = xTILE)
326 AM_CONDITIONAL(VAX, test x$TARGET = xVAX)
327 AM_CONDITIONAL(XTENSA, test x$TARGET = xXTENSA)
330 AC_CHECK_FUNCS(memcpy)
333 AC_CHECK_SIZEOF(double)
334 AC_CHECK_SIZEOF(long double)
336 # Also AC_SUBST this variable for ffi.h.
337 if test -z "$HAVE_LONG_DOUBLE"; then
339 if test $ac_cv_sizeof_long_double != 0; then
340 if test $HAVE_LONG_DOUBLE_VARIANT != 0; then
341 AC_DEFINE(HAVE_LONG_DOUBLE_VARIANT, 1, [Define if you support more than one size of the long double type])
344 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
346 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
351 AC_SUBST(HAVE_LONG_DOUBLE)
352 AC_SUBST(HAVE_LONG_DOUBLE_VARIANT)
358 if test x$TARGET = xSPARC; then
359 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
360 libffi_cv_as_sparc_ua_pcrel, [
361 save_CFLAGS="$CFLAGS"
362 save_LDFLAGS="$LDFLAGS"
363 CFLAGS="$CFLAGS -fpic"
364 LDFLAGS="$LDFLAGS -shared"
365 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
366 [libffi_cv_as_sparc_ua_pcrel=yes],
367 [libffi_cv_as_sparc_ua_pcrel=no])
368 CFLAGS="$save_CFLAGS"
369 LDFLAGS="$save_LDFLAGS"])
370 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
371 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
372 [Define if your assembler and linker support unaligned PC relative relocs.])
375 AC_CACHE_CHECK([assembler .register pseudo-op support],
376 libffi_cv_as_register_pseudo_op, [
377 libffi_cv_as_register_pseudo_op=unknown
378 # Check if we have .register
379 AC_TRY_COMPILE(,[asm (".register %g2, #scratch");],
380 [libffi_cv_as_register_pseudo_op=yes],
381 [libffi_cv_as_register_pseudo_op=no])
383 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
384 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
385 [Define if your assembler supports .register.])
389 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
390 AC_CACHE_CHECK([assembler supports pc related relocs],
391 libffi_cv_as_x86_pcrel, [
392 libffi_cv_as_x86_pcrel=no
393 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
394 if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
395 libffi_cv_as_x86_pcrel=yes
398 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
399 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
400 [Define if your assembler supports PC relative relocs.])
403 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
404 libffi_cv_as_ascii_pseudo_op, [
405 libffi_cv_as_ascii_pseudo_op=unknown
406 # Check if we have .ascii
407 AC_TRY_COMPILE(,[asm (".ascii \\"string\\"");],
408 [libffi_cv_as_ascii_pseudo_op=yes],
409 [libffi_cv_as_ascii_pseudo_op=no])
411 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
412 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
413 [Define if your assembler supports .ascii.])
416 AC_CACHE_CHECK([assembler .string pseudo-op support],
417 libffi_cv_as_string_pseudo_op, [
418 libffi_cv_as_string_pseudo_op=unknown
419 # Check if we have .string
420 AC_TRY_COMPILE(,[asm (".string \\"string\\"");],
421 [libffi_cv_as_string_pseudo_op=yes],
422 [libffi_cv_as_string_pseudo_op=no])
424 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
425 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
426 [Define if your assembler supports .string.])
430 # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC.
431 AC_ARG_ENABLE(pax_emutramp,
432 [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC],
433 if test "$enable_pax_emutramp" = "yes"; then
434 AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1,
435 [Define this if you want to enable pax emulated trampolines])
438 if test x$TARGET = xX86_WIN64; then
440 if test "x$sys_symbol_underscore" = xyes; then
441 AC_DEFINE(SYMBOL_UNDERSCORE, 1, [Define if symbols are underscored.])
445 FFI_EXEC_TRAMPOLINE_TABLE=0
448 FFI_EXEC_TRAMPOLINE_TABLE=1
449 AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1,
450 [Cannot use PROT_EXEC on this target, so, we revert to
453 *-apple-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris*)
454 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
455 [Cannot use malloc on this target, so, we revert to
459 AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)
460 AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)
462 if test x$TARGET = xX86_64; then
463 AC_CACHE_CHECK([toolchain supports unwind section type],
464 libffi_cv_as_x86_64_unwind_section_type, [
465 cat > conftest1.s << EOF
470 .section .eh_frame,"a",@unwind
474 cat > conftest2.c << EOF
479 libffi_cv_as_x86_64_unwind_section_type=no
480 # we ensure that we can compile _and_ link an assembly file containing an @unwind section
481 # since the compiler can support it and not the linker (ie old binutils)
482 if $CC -Wa,--fatal-warnings $CFLAGS -c conftest1.s > /dev/null 2>&1 && \
483 $CC conftest2.c conftest1.o > /dev/null 2>&1 ; then
484 libffi_cv_as_x86_64_unwind_section_type=yes
487 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
488 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
489 [Define if your assembler supports unwind section type.])
493 if test "x$GCC" = "xyes"; then
494 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
495 libffi_cv_ro_eh_frame, [
496 libffi_cv_ro_eh_frame=no
497 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
498 if $CC $CFLAGS -c -fpic -fexceptions -o conftest.o conftest.c > /dev/null 2>&1; then
499 objdump -h conftest.o > conftest.dump 2>&1
500 libffi_eh_frame_line=`grep -n eh_frame conftest.dump | cut -d: -f 1`
501 libffi_test_line=`expr $libffi_eh_frame_line + 1`p
502 sed -n $libffi_test_line conftest.dump > conftest.line
503 if grep READONLY conftest.line > /dev/null; then
504 libffi_cv_ro_eh_frame=yes
509 if test "x$libffi_cv_ro_eh_frame" = xyes; then
510 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
511 [Define if .eh_frame sections should be read-only.])
512 AC_DEFINE(EH_FRAME_FLAGS, "a",
513 [Define to the flags needed for the .section .eh_frame directive. ])
515 AC_DEFINE(EH_FRAME_FLAGS, "aw",
516 [Define to the flags needed for the .section .eh_frame directive. ])
519 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
520 libffi_cv_hidden_visibility_attribute, [
521 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c
522 libffi_cv_hidden_visibility_attribute=no
523 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
524 if grep '\.hidden.*foo' conftest.s >/dev/null; then
525 libffi_cv_hidden_visibility_attribute=yes
530 if test $libffi_cv_hidden_visibility_attribute = yes; then
531 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
532 [Define if __attribute__((visibility("hidden"))) is supported.])
537 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
539 #define FFI_HIDDEN(name) .hidden name
541 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
545 #define FFI_HIDDEN(name)
558 [ --enable-debug debugging mode],
559 if test "$enable_debug" = "yes"; then
560 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
562 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
564 AC_ARG_ENABLE(structs,
565 [ --disable-structs omit code for struct support],
566 if test "$enable_structs" = "no"; then
567 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this if you do not want support for aggregate types.])
569 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
571 AC_ARG_ENABLE(raw-api,
572 [ --disable-raw-api make the raw api unavailable],
573 if test "$enable_raw_api" = "no"; then
574 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this if you do not want support for the raw API.])
577 AC_ARG_ENABLE(purify-safety,
578 [ --enable-purify-safety purify-safe mode],
579 if test "$enable_purify_safety" = "yes"; then
580 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
583 # These variables are only ever used when we cross-build to X86_WIN32.
584 # And we only support this with GCC, so...
585 if test "x$GCC" = "xyes"; then
586 if test -n "$with_cross_host" &&
587 test x"$with_cross_host" != x"no"; then
588 toolexecdir='$(exec_prefix)/$(target_alias)'
589 toolexeclibdir='$(toolexecdir)/lib'
591 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
592 toolexeclibdir='$(libdir)'
594 multi_os_directory=`$CC -print-multi-os-directory`
595 case $multi_os_directory in
596 .) ;; # Avoid trailing /.
597 ../*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
599 AC_SUBST(toolexecdir)
601 toolexeclibdir='$(libdir)'
603 AC_SUBST(toolexeclibdir)
605 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
606 AC_CONFIG_COMMANDS(src, [
607 test -d src || mkdir src
608 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
609 ], [TARGETDIR="$TARGETDIR"])
611 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
613 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)