1 dnl Process this with autoconf to create configure
5 AC_INIT([libffi], [3.0.9], [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
15 AM_INIT_AUTOMAKE([no-dist])
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.
22 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
23 m4_define([_AC_ARG_VAR_PRECIOUS],[])
25 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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 $srcdir/testsuite)
45 TARGET=ALPHA; TARGETDIR=alpha;
46 # Support 128-bit long double, changeable via command-line switch.
47 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
51 TARGET=ARM; TARGETDIR=arm
54 amd64-*-freebsd* | amd64-*-openbsd*)
55 TARGET=X86_64; TARGETDIR=x86
59 TARGET=AVR32; TARGETDIR=avr32
63 TARGET=LIBFFI_CRIS; TARGETDIR=cris
67 TARGET=FRV; TARGETDIR=frv
70 hppa*-*-linux* | parisc*-*-linux*)
71 TARGET=PA_LINUX; TARGETDIR=pa
74 TARGET=PA64_HPUX; TARGETDIR=pa
77 TARGET=PA_HPUX; TARGETDIR=pa
80 i?86-*-freebsd* | i?86-*-openbsd*)
81 TARGET=X86_FREEBSD; TARGETDIR=x86
83 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2*)
84 TARGET=X86_WIN32; TARGETDIR=x86
85 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
86 # We must also check with_cross_host to decide if this is a native
87 # or cross-build and select where to install dlls appropriately.
88 if test -n "$with_cross_host" &&
89 test x"$with_cross_host" != x"no"; then
90 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
92 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
96 TARGET=X86_DARWIN; TARGETDIR=x86
98 i?86-*-solaris2.1[[0-9]]*)
99 TARGET=X86_64; TARGETDIR=x86
102 TARGET=X86; TARGETDIR=x86
106 TARGET=IA64; TARGETDIR=ia64
110 TARGET=M32R; TARGETDIR=m32r
114 TARGET=M68K; TARGETDIR=m68k
117 mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
118 TARGET=MIPS; TARGETDIR=mips
121 # Support 128-bit long double for NewABI.
122 HAVE_LONG_DOUBLE='defined(__mips64)'
123 TARGET=MIPS; TARGETDIR=mips
126 powerpc*-*-linux* | powerpc-*-sysv*)
127 TARGET=POWERPC; TARGETDIR=powerpc
130 TARGET=POWERPC; TARGETDIR=powerpc
133 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
135 powerpc-*-aix* | rs6000-*-aix*)
136 TARGET=POWERPC_AIX; TARGETDIR=powerpc
139 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
141 powerpc64-*-freebsd*)
142 TARGET=POWERPC; TARGETDIR=powerpc
145 TARGET=POWERPC; TARGETDIR=powerpc
148 s390-*-* | s390x-*-*)
149 TARGET=S390; TARGETDIR=s390
152 sh-*-* | sh[[34]]*-*-*)
153 TARGET=SH; TARGETDIR=sh
156 TARGET=SH64; TARGETDIR=sh64
160 TARGET=SPARC; TARGETDIR=sparc
164 TARGET=X86_DARWIN; TARGETDIR=x86
167 x86_64-*-cygwin* | x86_64-*-mingw*)
168 TARGET=X86_WIN64; TARGETDIR=x86
169 # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
170 # We must also check with_cross_host to decide if this is a native
171 # or cross-build and select where to install dlls appropriately.
172 if test -n "$with_cross_host" &&
173 test x"$with_cross_host" != x"no"; then
174 AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
176 AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
181 TARGET=X86_64; TARGETDIR=x86
185 AC_SUBST(AM_RUNTESTFLAGS)
186 AC_SUBST(AM_LTLDFLAGS)
188 if test $TARGETDIR = unknown; then
189 AC_MSG_ERROR(["libffi has not been ported to $host."])
192 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
193 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
194 AM_CONDITIONAL(X86, test x$TARGET = xX86)
195 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
196 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
197 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
198 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
199 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
200 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
201 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
202 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
203 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
204 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
205 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
206 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
207 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
208 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
209 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
210 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
211 AM_CONDITIONAL(S390, test x$TARGET = xS390)
212 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
213 AM_CONDITIONAL(SH, test x$TARGET = xSH)
214 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
215 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
216 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
217 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
220 AC_CHECK_FUNCS(memcpy)
223 AC_CHECK_SIZEOF(double)
224 AC_CHECK_SIZEOF(long double)
226 # Also AC_SUBST this variable for ffi.h.
227 if test -z "$HAVE_LONG_DOUBLE"; then
229 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
230 if test $ac_cv_sizeof_long_double != 0; then
232 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
236 AC_SUBST(HAVE_LONG_DOUBLE)
240 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
241 libffi_cv_as_cfi_pseudo_op, [
242 libffi_cv_as_cfi_pseudo_op=unknown
243 AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
244 [libffi_cv_as_cfi_pseudo_op=yes],
245 [libffi_cv_as_cfi_pseudo_op=no])
247 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
248 AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
249 [Define if your assembler supports .cfi_* directives.])
252 if test x$TARGET = xSPARC; then
253 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
254 libffi_cv_as_sparc_ua_pcrel, [
255 save_CFLAGS="$CFLAGS"
256 save_LDFLAGS="$LDFLAGS"
257 CFLAGS="$CFLAGS -fpic"
258 LDFLAGS="$LDFLAGS -shared"
259 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
260 [libffi_cv_as_sparc_ua_pcrel=yes],
261 [libffi_cv_as_sparc_ua_pcrel=no])
262 CFLAGS="$save_CFLAGS"
263 LDFLAGS="$save_LDFLAGS"])
264 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
265 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
266 [Define if your assembler and linker support unaligned PC relative relocs.])
269 AC_CACHE_CHECK([assembler .register pseudo-op support],
270 libffi_cv_as_register_pseudo_op, [
271 libffi_cv_as_register_pseudo_op=unknown
272 # Check if we have .register
273 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
274 [libffi_cv_as_register_pseudo_op=yes],
275 [libffi_cv_as_register_pseudo_op=no])
277 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
278 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
279 [Define if your assembler supports .register.])
283 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
284 AC_CACHE_CHECK([assembler supports pc related relocs],
285 libffi_cv_as_x86_pcrel, [
286 libffi_cv_as_x86_pcrel=yes
287 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
288 if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
289 libffi_cv_as_x86_pcrel=no
292 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
293 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
294 [Define if your assembler supports PC relative relocs.])
297 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
298 libffi_cv_as_ascii_pseudo_op, [
299 libffi_cv_as_ascii_pseudo_op=unknown
300 # Check if we have .ascii
301 AC_TRY_COMPILE([asm (".ascii \\"string\\"");],,
302 [libffi_cv_as_ascii_pseudo_op=yes],
303 [libffi_cv_as_ascii_pseudo_op=no])
305 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
306 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
307 [Define if your assembler supports .ascii.])
310 AC_CACHE_CHECK([assembler .string pseudo-op support],
311 libffi_cv_as_string_pseudo_op, [
312 libffi_cv_as_string_pseudo_op=unknown
313 # Check if we have .string
314 AC_TRY_COMPILE([asm (".string \\"string\\"");],,
315 [libffi_cv_as_string_pseudo_op=yes],
316 [libffi_cv_as_string_pseudo_op=no])
318 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
319 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
320 [Define if your assembler supports .string.])
325 *-apple-darwin10* | *-*-freebsd* | *-*-openbsd* | *-pc-solaris*)
326 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
327 [Cannot use malloc on this target, so, we revert to
332 if test x$TARGET = xX86_64; then
333 AC_CACHE_CHECK([assembler supports unwind section type],
334 libffi_cv_as_x86_64_unwind_section_type, [
335 libffi_cv_as_x86_64_unwind_section_type=yes
336 echo '.section .eh_frame,"a",@unwind' > conftest.s
337 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
338 libffi_cv_as_x86_64_unwind_section_type=no
341 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
342 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
343 [Define if your assembler supports unwind section type.])
347 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
348 libffi_cv_ro_eh_frame, [
349 libffi_cv_ro_eh_frame=no
350 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
351 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
352 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
353 libffi_cv_ro_eh_frame=yes
354 elif grep '.section.*eh_frame.*#alloc' conftest.c \
355 | grep -v '#write' > /dev/null; then
356 libffi_cv_ro_eh_frame=yes
361 if test "x$libffi_cv_ro_eh_frame" = xyes; then
362 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
363 [Define if .eh_frame sections should be read-only.])
364 AC_DEFINE(EH_FRAME_FLAGS, "a",
365 [Define to the flags needed for the .section .eh_frame directive.])
367 AC_DEFINE(EH_FRAME_FLAGS, "aw",
368 [Define to the flags needed for the .section .eh_frame directive.])
371 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
372 libffi_cv_hidden_visibility_attribute, [
373 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
374 libffi_cv_hidden_visibility_attribute=no
375 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
376 if grep '\.hidden.*foo' conftest.s >/dev/null; then
377 libffi_cv_hidden_visibility_attribute=yes
382 if test $libffi_cv_hidden_visibility_attribute = yes; then
383 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
384 [Define if __attribute__((visibility("hidden"))) is supported.])
388 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
390 #define FFI_HIDDEN(name) .hidden name
392 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
396 #define FFI_HIDDEN(name)
409 [ --enable-debug debugging mode],
410 if test "$enable_debug" = "yes"; then
411 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
414 AC_ARG_ENABLE(structs,
415 [ --disable-structs omit code for struct support],
416 if test "$enable_structs" = "no"; then
417 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
420 AC_ARG_ENABLE(raw-api,
421 [ --disable-raw-api make the raw api unavailable],
422 if test "$enable_raw_api" = "no"; then
423 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
426 AC_ARG_ENABLE(purify-safety,
427 [ --enable-purify-safety purify-safe mode],
428 if test "$enable_purify_safety" = "yes"; then
429 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
432 if test -n "$with_cross_host" &&
433 test x"$with_cross_host" != x"no"; then
434 toolexecdir='$(exec_prefix)/$(target_alias)'
435 toolexeclibdir='$(toolexecdir)/lib'
437 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
438 toolexeclibdir='$(libdir)'
440 multi_os_directory=`$CC -print-multi-os-directory`
441 case $multi_os_directory in
442 .) ;; # Avoid trailing /.
443 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
445 AC_SUBST(toolexecdir)
446 AC_SUBST(toolexeclibdir)
448 if test "${multilib}" = "yes"; then
449 multilib_arg="--enable-multilib"
454 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
455 AC_CONFIG_COMMANDS(src, [
456 test -d src || mkdir src
457 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
458 ], [TARGETDIR="$TARGETDIR"])
460 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
462 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile)