1 dnl Process this with autoconf to create configure
5 AC_INIT([libffi], [3.0.11], [http://gcc.gnu.org/bugs.html])
6 AC_CONFIG_HEADERS([fficonfig.h])
8 AM_ENABLE_MULTILIB(, ..)
11 target_alias=${target_alias-$host_alias}
13 . ${srcdir}/configure.host
17 # See if makeinfo has been installed and is modern enough
19 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
20 [GNU texinfo.* \([0-9][0-9.]*\)],
21 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
22 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
24 # We would like our source tree to be readonly. However when releases or
25 # pre-releases are generated, the flex/bison generated files as well as the
26 # various formats of manuals need to be included along with the rest of the
27 # sources. Therefore we have --enable-generated-files-in-srcdir to do
29 AC_MSG_CHECKING(generated-files-in-srcdir)
30 AC_ARG_ENABLE(generated-files-in-srcdir,
31 AS_HELP_STRING([--enable-generated-files-in-srcdir],
32 [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex]),
34 yes) enable_generated_files_in_srcdir=yes ;;
35 no) enable_generated_files_in_srcdir=no ;;
36 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
38 [enable_generated_files_in_srcdir=no])
39 AC_MSG_RESULT($enable_generated_files_in_srcdir)
40 AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
42 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
43 # We must force CC to /not/ be precious variables; otherwise
44 # the wrong, non-multilib-adjusted value will be used in multilibs.
45 # As a side effect, we have to subst CFLAGS ourselves.
47 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
48 m4_define([_AC_ARG_VAR_PRECIOUS],[])
50 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
60 AC_CHECK_HEADERS(sys/mman.h)
62 AC_FUNC_MMAP_BLACKLIST
64 dnl The -no-testsuite modules omit the test subdir.
65 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
70 TARGET=AARCH64; TARGETDIR=aarch64
74 TARGET=ALPHA; TARGETDIR=alpha;
75 # Support 128-bit long double, changeable via command-line switch.
76 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
80 TARGET=ARM; TARGETDIR=arm
83 amd64-*-freebsd* | amd64-*-openbsd*)
84 TARGET=X86_64; TARGETDIR=x86
88 TARGET=X86_64; TARGETDIR=x86
92 TARGET=AVR32; TARGETDIR=avr32
96 TARGET=BFIN; TARGETDIR=bfin
100 TARGET=LIBFFI_CRIS; TARGETDIR=cris
104 TARGET=FRV; TARGETDIR=frv
107 hppa*-*-linux* | parisc*-*-linux* | hppa*-*-openbsd*)
108 TARGET=PA_LINUX; TARGETDIR=pa
111 TARGET=PA64_HPUX; TARGETDIR=pa
114 TARGET=PA_HPUX; TARGETDIR=pa
117 i?86-*-freebsd* | i?86-*-openbsd*)
118 TARGET=X86_FREEBSD; TARGETDIR=x86
120 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2* | i?86-*-interix*)
121 TARGET=X86_WIN32; TARGETDIR=x86
122 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
123 # We must also check with_cross_host to decide if this is a native
124 # or cross-build and select where to install dlls appropriately.
125 if test -n "$with_cross_host" &&
126 test x"$with_cross_host" != x"no"; then
127 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
129 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
133 TARGET=X86_DARWIN; TARGETDIR=x86
135 i?86-*-solaris2.1[[0-9]]*)
136 TARGET=X86_64; TARGETDIR=x86
139 TARGET=X86_64; TARGETDIR=x86
143 TARGET=IA64; TARGETDIR=ia64
147 TARGET=M32R; TARGETDIR=m32r
151 TARGET=M68K; TARGETDIR=m68k
154 mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
155 TARGET=MIPS; TARGETDIR=mips
157 mips*-*-linux* | mips*-*-openbsd*)
158 # Support 128-bit long double for NewABI.
159 HAVE_LONG_DOUBLE='defined(__mips64)'
160 TARGET=MIPS; TARGETDIR=mips
163 powerpc*-*-linux* | powerpc-*-sysv*)
164 TARGET=POWERPC; TARGETDIR=powerpc
167 TARGET=POWERPC; TARGETDIR=powerpc
170 TARGET=POWERPC; TARGETDIR=powerpc
172 powerpc-*-darwin* | powerpc64-*-darwin*)
173 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
175 powerpc-*-aix* | rs6000-*-aix*)
176 TARGET=POWERPC_AIX; TARGETDIR=powerpc
178 powerpc-*-freebsd* | powerpc-*-openbsd*)
179 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
181 powerpc64-*-freebsd*)
182 TARGET=POWERPC; TARGETDIR=powerpc
185 TARGET=POWERPC; TARGETDIR=powerpc
188 s390-*-* | s390x-*-*)
189 TARGET=S390; TARGETDIR=s390
192 sh-*-* | sh[[34]]*-*-*)
193 TARGET=SH; TARGETDIR=sh
196 TARGET=SH64; TARGETDIR=sh64
200 TARGET=SPARC; TARGETDIR=sparc
204 TARGET=TILE; TARGETDIR=tile
208 TARGET=X86_DARWIN; TARGETDIR=x86
211 x86_64-*-cygwin* | x86_64-*-mingw*)
212 TARGET=X86_WIN64; TARGETDIR=x86
213 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
214 # We must also check with_cross_host to decide if this is a native
215 # or cross-build and select where to install dlls appropriately.
216 if test -n "$with_cross_host" &&
217 test x"$with_cross_host" != x"no"; then
218 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
220 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
225 TARGET=X86_64; TARGETDIR=x86
229 AC_SUBST(AM_RUNTESTFLAGS)
230 AC_SUBST(AM_LTLDFLAGS)
232 if test $TARGETDIR = unknown; then
233 AC_MSG_ERROR(["libffi has not been ported to $host."])
236 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
237 AM_CONDITIONAL(BFIN, test x$TARGET = xBFIN)
238 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
239 AM_CONDITIONAL(X86, test x$TARGET = xX86)
240 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
241 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
242 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
243 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
244 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
245 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
246 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
247 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
248 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
249 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
250 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
251 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
252 AM_CONDITIONAL(AARCH64, test x$TARGET = xAARCH64)
253 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
254 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
255 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
256 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
257 AM_CONDITIONAL(S390, test x$TARGET = xS390)
258 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
259 AM_CONDITIONAL(SH, test x$TARGET = xSH)
260 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
261 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
262 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
263 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
264 AM_CONDITIONAL(TILE, test x$TARGET = xTILE)
267 AC_CHECK_FUNCS(memcpy)
270 AC_CHECK_SIZEOF(double)
271 AC_CHECK_SIZEOF(long double)
273 # Also AC_SUBST this variable for ffi.h.
274 if test -z "$HAVE_LONG_DOUBLE"; then
276 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
277 if test $ac_cv_sizeof_long_double != 0; then
279 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
283 AC_SUBST(HAVE_LONG_DOUBLE)
289 if test x$TARGET = xSPARC; then
290 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
291 libffi_cv_as_sparc_ua_pcrel, [
292 save_CFLAGS="$CFLAGS"
293 save_LDFLAGS="$LDFLAGS"
294 CFLAGS="$CFLAGS -fpic"
295 LDFLAGS="$LDFLAGS -shared"
296 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
297 [libffi_cv_as_sparc_ua_pcrel=yes],
298 [libffi_cv_as_sparc_ua_pcrel=no])
299 CFLAGS="$save_CFLAGS"
300 LDFLAGS="$save_LDFLAGS"])
301 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
302 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
303 [Define if your assembler and linker support unaligned PC relative relocs.])
306 AC_CACHE_CHECK([assembler .register pseudo-op support],
307 libffi_cv_as_register_pseudo_op, [
308 libffi_cv_as_register_pseudo_op=unknown
309 # Check if we have .register
310 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
311 [libffi_cv_as_register_pseudo_op=yes],
312 [libffi_cv_as_register_pseudo_op=no])
314 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
315 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
316 [Define if your assembler supports .register.])
320 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
321 AC_CACHE_CHECK([assembler supports pc related relocs],
322 libffi_cv_as_x86_pcrel, [
323 libffi_cv_as_x86_pcrel=yes
324 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
325 if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
326 libffi_cv_as_x86_pcrel=no
329 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
330 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
331 [Define if your assembler supports PC relative relocs.])
334 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
335 libffi_cv_as_ascii_pseudo_op, [
336 libffi_cv_as_ascii_pseudo_op=unknown
337 # Check if we have .ascii
338 AC_TRY_COMPILE([asm (".ascii \\"string\\"");],,
339 [libffi_cv_as_ascii_pseudo_op=yes],
340 [libffi_cv_as_ascii_pseudo_op=no])
342 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
343 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
344 [Define if your assembler supports .ascii.])
347 AC_CACHE_CHECK([assembler .string pseudo-op support],
348 libffi_cv_as_string_pseudo_op, [
349 libffi_cv_as_string_pseudo_op=unknown
350 # Check if we have .string
351 AC_TRY_COMPILE([asm (".string \\"string\\"");],,
352 [libffi_cv_as_string_pseudo_op=yes],
353 [libffi_cv_as_string_pseudo_op=no])
355 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
356 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
357 [Define if your assembler supports .string.])
361 # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC.
362 AC_ARG_ENABLE(pax_emutramp,
363 [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC],
364 if test "$enable_pax_emutramp" = "yes"; then
365 AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1,
366 [Define this if you want to enable pax emulated trampolines])
369 FFI_EXEC_TRAMPOLINE_TABLE=0
372 FFI_EXEC_TRAMPOLINE_TABLE=1
373 AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1,
374 [Cannot use PROT_EXEC on this target, so, we revert to
377 *-apple-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris*)
378 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
379 [Cannot use malloc on this target, so, we revert to
383 AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)
384 AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)
386 if test x$TARGET = xX86_64; then
387 AC_CACHE_CHECK([assembler supports unwind section type],
388 libffi_cv_as_x86_64_unwind_section_type, [
389 libffi_cv_as_x86_64_unwind_section_type=yes
390 echo '.section .eh_frame,"a",@unwind' > conftest.s
391 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
392 libffi_cv_as_x86_64_unwind_section_type=no
395 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
396 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
397 [Define if your assembler supports unwind section type.])
401 if test "x$GCC" = "xyes"; then
402 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
403 libffi_cv_ro_eh_frame, [
404 libffi_cv_ro_eh_frame=no
405 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
406 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
407 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
408 libffi_cv_ro_eh_frame=yes
409 elif grep '.section.*eh_frame.*#alloc' conftest.c \
410 | grep -v '#write' > /dev/null; then
411 libffi_cv_ro_eh_frame=yes
416 if test "x$libffi_cv_ro_eh_frame" = xyes; then
417 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
418 [Define if .eh_frame sections should be read-only.])
419 AC_DEFINE(EH_FRAME_FLAGS, "a",
420 [Define to the flags needed for the .section .eh_frame directive. ])
422 AC_DEFINE(EH_FRAME_FLAGS, "aw",
423 [Define to the flags needed for the .section .eh_frame directive. ])
426 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
427 libffi_cv_hidden_visibility_attribute, [
428 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c
429 libffi_cv_hidden_visibility_attribute=no
430 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
431 if grep '\.hidden.*foo' conftest.s >/dev/null; then
432 libffi_cv_hidden_visibility_attribute=yes
437 if test $libffi_cv_hidden_visibility_attribute = yes; then
438 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
439 [Define if __attribute__((visibility("hidden"))) is supported.])
444 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
446 #define FFI_HIDDEN(name) .hidden name
448 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
452 #define FFI_HIDDEN(name)
465 [ --enable-debug debugging mode],
466 if test "$enable_debug" = "yes"; then
467 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
469 AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
471 AC_ARG_ENABLE(structs,
472 [ --disable-structs omit code for struct support],
473 if test "$enable_structs" = "no"; then
474 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
477 AC_ARG_ENABLE(raw-api,
478 [ --disable-raw-api make the raw api unavailable],
479 if test "$enable_raw_api" = "no"; then
480 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
483 AC_ARG_ENABLE(purify-safety,
484 [ --enable-purify-safety purify-safe mode],
485 if test "$enable_purify_safety" = "yes"; then
486 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
489 if test -n "$with_cross_host" &&
490 test x"$with_cross_host" != x"no"; then
491 toolexecdir='$(exec_prefix)/$(target_alias)'
492 toolexeclibdir='$(toolexecdir)/lib'
494 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
495 toolexeclibdir='$(libdir)'
497 multi_os_directory=`$CC -print-multi-os-directory`
498 case $multi_os_directory in
499 .) ;; # Avoid trailing /.
500 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
502 AC_SUBST(toolexecdir)
503 AC_SUBST(toolexeclibdir)
505 if test "${multilib}" = "yes"; then
506 multilib_arg="--enable-multilib"
511 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
512 AC_CONFIG_COMMANDS(src, [
513 test -d src || mkdir src
514 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
515 ], [TARGETDIR="$TARGETDIR"])
517 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
519 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile)