1 dnl Process this with autoconf to create configure
3 # file from libffi - slightly patched for ctypes
8 AC_INIT([libffi], [3.0.5], [http://gcc.gnu.org/bugs.html])
9 AC_CONFIG_HEADERS([fficonfig.h])
12 target_alias=${target_alias-$host_alias}
14 . ${srcdir}/configure.host
18 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
19 # We must force CC to /not/ be precious variables; otherwise
20 # the wrong, non-multilib-adjusted value will be used in multilibs.
21 # As a side effect, we have to subst CFLAGS ourselves.
23 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
24 m4_define([_AC_ARG_VAR_PRECIOUS],[])
26 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
36 AC_CHECK_HEADERS(sys/mman.h)
38 AC_FUNC_MMAP_BLACKLIST
40 dnl The -no-testsuite modules omit the test subdir.
41 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
46 TARGET=ALPHA; TARGETDIR=alpha;
47 # Support 128-bit long double, changable via command-line switch.
48 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
52 TARGET=ARM; TARGETDIR=arm
56 TARGET=X86_64; TARGETDIR=x86
60 TARGET=LIBFFI_CRIS; TARGETDIR=cris
64 TARGET=FRV; TARGETDIR=frv
67 hppa*-*-linux* | parisc*-*-linux*)
68 TARGET=PA_LINUX; TARGETDIR=pa
71 TARGET=PA64_HPUX; TARGETDIR=pa
74 TARGET=PA_HPUX; TARGETDIR=pa
77 i386-*-freebsd* | i386-*-openbsd*)
78 TARGET=X86_FREEBSD; TARGETDIR=x86
80 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
81 TARGET=X86_WIN32; TARGETDIR=x86
84 TARGET=X86_DARWIN; TARGETDIR=x86
86 i?86-*-solaris2.1[[0-9]]*)
87 TARGET=X86_64; TARGETDIR=x86
90 TARGET=X86; TARGETDIR=x86
93 TARGET=X86; TARGETDIR=x86
97 TARGET=IA64; TARGETDIR=ia64
101 TARGET=M32R; TARGETDIR=m32r
105 TARGET=M68K; TARGETDIR=m68k
108 mips-sgi-irix5.* | mips-sgi-irix6.*)
109 TARGET=MIPS; TARGETDIR=mips
112 TARGET=MIPS; TARGETDIR=mips
115 powerpc*-*-linux* | powerpc-*-sysv*)
116 TARGET=POWERPC; TARGETDIR=powerpc
119 TARGET=POWERPC; TARGETDIR=powerpc
122 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
124 powerpc-*-aix* | rs6000-*-aix*)
125 TARGET=POWERPC_AIX; TARGETDIR=powerpc
128 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
131 TARGET=POWERPC; TARGETDIR=powerpc
134 s390-*-* | s390x-*-*)
135 TARGET=S390; TARGETDIR=s390
138 sh-*-* | sh[[34]]*-*-*)
139 TARGET=SH; TARGETDIR=sh
142 TARGET=SH64; TARGETDIR=sh64
146 TARGET=SPARC; TARGETDIR=sparc
150 TARGET=X86_DARWIN; TARGETDIR=x86
152 x86_64-*-cygwin* | x86_64-*-mingw*)
155 TARGET=X86_64; TARGETDIR=x86
159 AC_SUBST(AM_RUNTESTFLAGS)
161 if test $TARGETDIR = unknown; then
162 AC_MSG_ERROR(["libffi has not been ported to $host."])
165 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
166 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
167 AM_CONDITIONAL(X86, test x$TARGET = xX86)
168 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
169 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
170 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
171 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
172 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
173 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
174 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
175 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
176 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
177 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
178 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
179 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
180 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
181 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
182 AM_CONDITIONAL(S390, test x$TARGET = xS390)
183 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
184 AM_CONDITIONAL(SH, test x$TARGET = xSH)
185 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
186 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
187 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
188 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
191 AC_CHECK_FUNCS(memcpy)
194 AC_CHECK_SIZEOF(double)
195 AC_CHECK_SIZEOF(long double)
197 # Also AC_SUBST this variable for ffi.h.
198 if test -z "$HAVE_LONG_DOUBLE"; then
200 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
201 if test $ac_cv_sizeof_long_double != 0; then
203 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
207 AC_SUBST(HAVE_LONG_DOUBLE)
211 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
212 libffi_cv_as_cfi_pseudo_op, [
213 libffi_cv_as_cfi_pseudo_op=unknown
214 AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
215 [libffi_cv_as_cfi_pseudo_op=yes],
216 [libffi_cv_as_cfi_pseudo_op=no])
218 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
219 AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
220 [Define if your assembler supports .cfi_* directives.])
223 if test x$TARGET = xSPARC; then
224 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
225 libffi_cv_as_sparc_ua_pcrel, [
226 save_CFLAGS="$CFLAGS"
227 save_LDFLAGS="$LDFLAGS"
228 CFLAGS="$CFLAGS -fpic"
229 LDFLAGS="$LDFLAGS -shared"
230 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
231 [libffi_cv_as_sparc_ua_pcrel=yes],
232 [libffi_cv_as_sparc_ua_pcrel=no])
233 CFLAGS="$save_CFLAGS"
234 LDFLAGS="$save_LDFLAGS"])
235 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
236 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
237 [Define if your assembler and linker support unaligned PC relative relocs.])
240 AC_CACHE_CHECK([assembler .register pseudo-op support],
241 libffi_cv_as_register_pseudo_op, [
242 libffi_cv_as_register_pseudo_op=unknown
243 # Check if we have .register
244 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
245 [libffi_cv_as_register_pseudo_op=yes],
246 [libffi_cv_as_register_pseudo_op=no])
248 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
249 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
250 [Define if your assembler supports .register.])
254 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
255 libffi_cv_ro_eh_frame, [
256 libffi_cv_ro_eh_frame=no
257 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
258 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
259 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
260 libffi_cv_ro_eh_frame=yes
261 elif grep '.section.*eh_frame.*#alloc' conftest.c \
262 | grep -v '#write' > /dev/null; then
263 libffi_cv_ro_eh_frame=yes
268 if test "x$libffi_cv_ro_eh_frame" = xyes; then
269 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
270 [Define if .eh_frame sections should be read-only.])
271 AC_DEFINE(EH_FRAME_FLAGS, "a",
272 [Define to the flags needed for the .section .eh_frame directive.])
274 AC_DEFINE(EH_FRAME_FLAGS, "aw",
275 [Define to the flags needed for the .section .eh_frame directive.])
278 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
279 libffi_cv_hidden_visibility_attribute, [
280 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
281 libffi_cv_hidden_visibility_attribute=no
282 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
283 if grep '\.hidden.*foo' conftest.s >/dev/null; then
284 libffi_cv_hidden_visibility_attribute=yes
289 if test $libffi_cv_hidden_visibility_attribute = yes; then
290 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
291 [Define if __attribute__((visibility("hidden"))) is supported.])
295 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
297 #define FFI_HIDDEN(name) .hidden name
299 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
303 #define FFI_HIDDEN(name)
316 [ --enable-debug debugging mode],
317 if test "$enable_debug" = "yes"; then
318 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
321 AC_ARG_ENABLE(structs,
322 [ --disable-structs omit code for struct support],
323 if test "$enable_structs" = "no"; then
324 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
327 AC_ARG_ENABLE(raw-api,
328 [ --disable-raw-api make the raw api unavailable],
329 if test "$enable_raw_api" = "no"; then
330 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
333 AC_ARG_ENABLE(purify-safety,
334 [ --enable-purify-safety purify-safe mode],
335 if test "$enable_purify_safety" = "yes"; then
336 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
339 if test -n "$with_cross_host" &&
340 test x"$with_cross_host" != x"no"; then
341 toolexecdir='$(exec_prefix)/$(target_alias)'
342 toolexeclibdir='$(toolexecdir)/lib'
344 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
345 toolexeclibdir='$(libdir)'
347 multi_os_directory=`$CC -print-multi-os-directory`
348 case $multi_os_directory in
349 .) ;; # Avoid trailing /.
350 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
352 AC_SUBST(toolexecdir)
353 AC_SUBST(toolexeclibdir)
355 if test "${multilib}" = "yes"; then
356 multilib_arg="--enable-multilib"
361 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
362 AC_CONFIG_COMMANDS(src, [
363 test -d src || mkdir src
364 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
365 ], [TARGETDIR="$TARGETDIR"])
367 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
369 AC_CONFIG_FILES(include/ffi.h)
371 AC_CONFIG_LINKS(include/ffi_common.h:include/ffi_common.h)
373 AC_CONFIG_FILES(fficonfig.py)