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
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 this for sharedlib
86 AM_LTLDFLAGS="-no-undefined"
89 TARGET=X86_DARWIN; TARGETDIR=x86
91 i?86-*-solaris2.1[[0-9]]*)
92 TARGET=X86_64; TARGETDIR=x86
95 TARGET=X86; TARGETDIR=x86
99 TARGET=IA64; TARGETDIR=ia64
103 TARGET=M32R; TARGETDIR=m32r
107 TARGET=M68K; TARGETDIR=m68k
110 mips-sgi-irix5.* | mips-sgi-irix6.*)
111 TARGET=MIPS; TARGETDIR=mips
114 # Support 128-bit long double for NewABI.
115 HAVE_LONG_DOUBLE='defined(__mips64)'
116 TARGET=MIPS; TARGETDIR=mips
119 powerpc*-*-linux* | powerpc-*-sysv*)
120 TARGET=POWERPC; TARGETDIR=powerpc
123 TARGET=POWERPC; TARGETDIR=powerpc
126 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
128 powerpc-*-aix* | rs6000-*-aix*)
129 TARGET=POWERPC_AIX; TARGETDIR=powerpc
132 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
134 powerpc64-*-freebsd*)
135 TARGET=POWERPC; TARGETDIR=powerpc
138 TARGET=POWERPC; TARGETDIR=powerpc
141 s390-*-* | s390x-*-*)
142 TARGET=S390; TARGETDIR=s390
145 sh-*-* | sh[[34]]*-*-*)
146 TARGET=SH; TARGETDIR=sh
149 TARGET=SH64; TARGETDIR=sh64
153 TARGET=SPARC; TARGETDIR=sparc
157 TARGET=X86_DARWIN; TARGETDIR=x86
160 x86_64-*-cygwin* | x86_64-*-mingw*)
161 TARGET=X86_WIN64; TARGETDIR=x86
165 TARGET=X86_64; TARGETDIR=x86
169 AC_SUBST(AM_RUNTESTFLAGS)
170 AC_SUBST(AM_LTLDFLAGS)
172 if test $TARGETDIR = unknown; then
173 AC_MSG_ERROR(["libffi has not been ported to $host."])
176 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
177 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
178 AM_CONDITIONAL(X86, test x$TARGET = xX86)
179 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
180 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
181 AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64)
182 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
183 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
184 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
185 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
186 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
187 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
188 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
189 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
190 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
191 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
192 AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32)
193 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
194 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
195 AM_CONDITIONAL(S390, test x$TARGET = xS390)
196 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
197 AM_CONDITIONAL(SH, test x$TARGET = xSH)
198 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
199 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
200 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
201 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
204 AC_CHECK_FUNCS(memcpy)
207 AC_CHECK_SIZEOF(double)
208 AC_CHECK_SIZEOF(long double)
210 # Also AC_SUBST this variable for ffi.h.
211 if test -z "$HAVE_LONG_DOUBLE"; then
213 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
214 if test $ac_cv_sizeof_long_double != 0; then
216 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
220 AC_SUBST(HAVE_LONG_DOUBLE)
224 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
225 libffi_cv_as_cfi_pseudo_op, [
226 libffi_cv_as_cfi_pseudo_op=unknown
227 AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
228 [libffi_cv_as_cfi_pseudo_op=yes],
229 [libffi_cv_as_cfi_pseudo_op=no])
231 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
232 AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
233 [Define if your assembler supports .cfi_* directives.])
236 if test x$TARGET = xSPARC; then
237 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
238 libffi_cv_as_sparc_ua_pcrel, [
239 save_CFLAGS="$CFLAGS"
240 save_LDFLAGS="$LDFLAGS"
241 CFLAGS="$CFLAGS -fpic"
242 LDFLAGS="$LDFLAGS -shared"
243 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
244 [libffi_cv_as_sparc_ua_pcrel=yes],
245 [libffi_cv_as_sparc_ua_pcrel=no])
246 CFLAGS="$save_CFLAGS"
247 LDFLAGS="$save_LDFLAGS"])
248 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
249 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
250 [Define if your assembler and linker support unaligned PC relative relocs.])
253 AC_CACHE_CHECK([assembler .register pseudo-op support],
254 libffi_cv_as_register_pseudo_op, [
255 libffi_cv_as_register_pseudo_op=unknown
256 # Check if we have .register
257 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
258 [libffi_cv_as_register_pseudo_op=yes],
259 [libffi_cv_as_register_pseudo_op=no])
261 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
262 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
263 [Define if your assembler supports .register.])
267 if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
268 AC_CACHE_CHECK([assembler supports pc related relocs],
269 libffi_cv_as_x86_pcrel, [
270 libffi_cv_as_x86_pcrel=yes
271 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
272 if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
273 libffi_cv_as_x86_pcrel=no
276 if test "x$libffi_cv_as_x86_pcrel" = xyes; then
277 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
278 [Define if your assembler supports PC relative relocs.])
281 AC_CACHE_CHECK([assembler .ascii pseudo-op support],
282 libffi_cv_as_ascii_pseudo_op, [
283 libffi_cv_as_ascii_pseudo_op=unknown
284 # Check if we have .ascii
285 AC_TRY_COMPILE([asm (".ascii \"string\"");],,
286 [libffi_cv_as_ascii_pseudo_op=yes],
287 [libffi_cv_as_ascii_pseudo_op=no])
289 if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
290 AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
291 [Define if your assembler supports .ascii.])
294 AC_CACHE_CHECK([assembler .string pseudo-op support],
295 libffi_cv_as_string_pseudo_op, [
296 libffi_cv_as_string_pseudo_op=unknown
297 # Check if we have .string
298 AC_TRY_COMPILE([asm (".string \"string\"");],,
299 [libffi_cv_as_string_pseudo_op=yes],
300 [libffi_cv_as_string_pseudo_op=no])
302 if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
303 AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
304 [Define if your assembler supports .string.])
309 *-apple-darwin10* | *-*-freebsd* | *-*-openbsd* | *-pc-solaris*)
310 AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
311 [Cannot use malloc on this target, so, we revert to
316 if test x$TARGET = xX86_64; then
317 AC_CACHE_CHECK([assembler supports unwind section type],
318 libffi_cv_as_x86_64_unwind_section_type, [
319 libffi_cv_as_x86_64_unwind_section_type=yes
320 echo '.section .eh_frame,"a",@unwind' > conftest.s
321 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
322 libffi_cv_as_x86_64_unwind_section_type=no
325 if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
326 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
327 [Define if your assembler supports unwind section type.])
331 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
332 libffi_cv_ro_eh_frame, [
333 libffi_cv_ro_eh_frame=no
334 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
335 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
336 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
337 libffi_cv_ro_eh_frame=yes
338 elif grep '.section.*eh_frame.*#alloc' conftest.c \
339 | grep -v '#write' > /dev/null; then
340 libffi_cv_ro_eh_frame=yes
345 if test "x$libffi_cv_ro_eh_frame" = xyes; then
346 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
347 [Define if .eh_frame sections should be read-only.])
348 AC_DEFINE(EH_FRAME_FLAGS, "a",
349 [Define to the flags needed for the .section .eh_frame directive.])
351 AC_DEFINE(EH_FRAME_FLAGS, "aw",
352 [Define to the flags needed for the .section .eh_frame directive.])
355 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
356 libffi_cv_hidden_visibility_attribute, [
357 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
358 libffi_cv_hidden_visibility_attribute=no
359 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
360 if grep '\.hidden.*foo' conftest.s >/dev/null; then
361 libffi_cv_hidden_visibility_attribute=yes
366 if test $libffi_cv_hidden_visibility_attribute = yes; then
367 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
368 [Define if __attribute__((visibility("hidden"))) is supported.])
372 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
374 #define FFI_HIDDEN(name) .hidden name
376 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
380 #define FFI_HIDDEN(name)
393 [ --enable-debug debugging mode],
394 if test "$enable_debug" = "yes"; then
395 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
398 AC_ARG_ENABLE(structs,
399 [ --disable-structs omit code for struct support],
400 if test "$enable_structs" = "no"; then
401 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
404 AC_ARG_ENABLE(raw-api,
405 [ --disable-raw-api make the raw api unavailable],
406 if test "$enable_raw_api" = "no"; then
407 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
410 AC_ARG_ENABLE(purify-safety,
411 [ --enable-purify-safety purify-safe mode],
412 if test "$enable_purify_safety" = "yes"; then
413 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
416 if test -n "$with_cross_host" &&
417 test x"$with_cross_host" != x"no"; then
418 toolexecdir='$(exec_prefix)/$(target_alias)'
419 toolexeclibdir='$(toolexecdir)/lib'
421 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
422 toolexeclibdir='$(libdir)'
424 multi_os_directory=`$CC -print-multi-os-directory`
425 case $multi_os_directory in
426 .) ;; # Avoid trailing /.
427 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
429 AC_SUBST(toolexecdir)
430 AC_SUBST(toolexeclibdir)
432 if test "${multilib}" = "yes"; then
433 multilib_arg="--enable-multilib"
438 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
439 AC_CONFIG_COMMANDS(src, [
440 test -d src || mkdir src
441 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
442 ], [TARGETDIR="$TARGETDIR"])
444 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
446 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile)