1 dnl Process this with autoconf to create configure
5 AC_INIT([libffi], [2.1], [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([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, changable via command-line switch.
47 HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
51 TARGET=ARM; TARGETDIR=arm
55 TARGET=LIBFFI_CRIS; TARGETDIR=cris
59 TARGET=FRV; TARGETDIR=frv
62 hppa*-*-linux* | parisc*-*-linux*)
63 TARGET=PA_LINUX; TARGETDIR=pa
66 TARGET=PA64_HPUX; TARGETDIR=pa
69 TARGET=PA_HPUX; TARGETDIR=pa
72 i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
73 TARGET=X86_WIN32; TARGETDIR=x86
76 TARGET=X86_DARWIN; TARGETDIR=x86
78 i?86-*-solaris2.1[[0-9]]*)
79 TARGET=X86_64; TARGETDIR=x86
82 TARGET=X86; TARGETDIR=x86
86 TARGET=IA64; TARGETDIR=ia64
90 TARGET=M32R; TARGETDIR=m32r
94 TARGET=M68K; TARGETDIR=m68k
99 mips-sgi-irix5.* | mips-sgi-irix6.*)
100 TARGET=MIPS_IRIX; TARGETDIR=mips
103 TARGET=MIPS_LINUX; TARGETDIR=mips
106 powerpc*-*-linux* | powerpc-*-sysv*)
107 TARGET=POWERPC; TARGETDIR=powerpc
110 TARGET=POWERPC; TARGETDIR=powerpc
113 TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
115 powerpc-*-aix* | rs6000-*-aix*)
116 TARGET=POWERPC_AIX; TARGETDIR=powerpc
119 TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
122 TARGET=POWERPC; TARGETDIR=powerpc
125 s390-*-* | s390x-*-*)
126 TARGET=S390; TARGETDIR=s390
129 sh-*-* | sh[[34]]*-*-*)
130 TARGET=SH; TARGETDIR=sh
133 TARGET=SH64; TARGETDIR=sh64
137 TARGET=SPARC; TARGETDIR=sparc
141 TARGET=X86_DARWIN; TARGETDIR=x86
143 x86_64-*-cygwin* | x86_64-*-mingw*)
146 TARGET=X86_64; TARGETDIR=x86
150 AC_SUBST(AM_RUNTESTFLAGS)
152 if test $TARGETDIR = unknown; then
153 AC_MSG_ERROR(["libffi has not been ported to $host."])
156 AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
157 AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
158 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
159 AM_CONDITIONAL(X86, test x$TARGET = xX86)
160 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
161 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
162 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
163 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
164 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
165 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
166 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
167 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
168 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
169 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
170 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
171 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
172 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
173 AM_CONDITIONAL(S390, test x$TARGET = xS390)
174 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
175 AM_CONDITIONAL(SH, test x$TARGET = xSH)
176 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
177 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
178 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
179 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
182 xMIPS*) TARGET=MIPS ;;
187 AC_CHECK_FUNCS(memcpy)
190 AC_CHECK_SIZEOF(double)
191 AC_CHECK_SIZEOF(long double)
193 # Also AC_SUBST this variable for ffi.h.
194 if test -z "$HAVE_LONG_DOUBLE"; then
196 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
197 if test $ac_cv_sizeof_long_double != 0; then
199 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
203 AC_SUBST(HAVE_LONG_DOUBLE)
207 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
208 libffi_cv_as_cfi_pseudo_op, [
209 libffi_cv_as_cfi_pseudo_op=unknown
210 AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
211 [libffi_cv_as_cfi_pseudo_op=yes],
212 [libffi_cv_as_cfi_pseudo_op=no])
214 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
215 AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
216 [Define if your assembler supports .cfi_* directives.])
219 if test x$TARGET = xSPARC; then
220 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
221 libffi_cv_as_sparc_ua_pcrel, [
222 save_CFLAGS="$CFLAGS"
223 save_LDFLAGS="$LDFLAGS"
224 CFLAGS="$CFLAGS -fpic"
225 LDFLAGS="$LDFLAGS -shared"
226 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
227 [libffi_cv_as_sparc_ua_pcrel=yes],
228 [libffi_cv_as_sparc_ua_pcrel=no])
229 CFLAGS="$save_CFLAGS"
230 LDFLAGS="$save_LDFLAGS"])
231 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
232 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
233 [Define if your assembler and linker support unaligned PC relative relocs.])
236 AC_CACHE_CHECK([assembler .register pseudo-op support],
237 libffi_cv_as_register_pseudo_op, [
238 libffi_cv_as_register_pseudo_op=unknown
239 # Check if we have .register
240 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
241 [libffi_cv_as_register_pseudo_op=yes],
242 [libffi_cv_as_register_pseudo_op=no])
244 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
245 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
246 [Define if your assembler supports .register.])
250 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
251 libffi_cv_ro_eh_frame, [
252 libffi_cv_ro_eh_frame=no
253 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
254 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
255 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
256 libffi_cv_ro_eh_frame=yes
257 elif grep '.section.*eh_frame.*#alloc' conftest.c \
258 | grep -v '#write' > /dev/null; then
259 libffi_cv_ro_eh_frame=yes
264 if test "x$libffi_cv_ro_eh_frame" = xyes; then
265 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
266 [Define if .eh_frame sections should be read-only.])
267 AC_DEFINE(EH_FRAME_FLAGS, "a",
268 [Define to the flags needed for the .section .eh_frame directive.])
270 AC_DEFINE(EH_FRAME_FLAGS, "aw",
271 [Define to the flags needed for the .section .eh_frame directive.])
274 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
275 libffi_cv_hidden_visibility_attribute, [
276 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
277 libffi_cv_hidden_visibility_attribute=no
278 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
279 if grep '\.hidden.*foo' conftest.s >/dev/null; then
280 libffi_cv_hidden_visibility_attribute=yes
285 if test $libffi_cv_hidden_visibility_attribute = yes; then
286 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
287 [Define if __attribute__((visibility("hidden"))) is supported.])
291 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
293 #define FFI_HIDDEN(name) .hidden name
295 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
299 #define FFI_HIDDEN(name)
312 [ --enable-debug debugging mode],
313 if test "$enable_debug" = "yes"; then
314 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
317 AC_ARG_ENABLE(structs,
318 [ --disable-structs omit code for struct support],
319 if test "$enable_structs" = "no"; then
320 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
323 AC_ARG_ENABLE(raw-api,
324 [ --disable-raw-api make the raw api unavailable],
325 if test "$enable_raw_api" = "no"; then
326 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
329 AC_ARG_ENABLE(purify-safety,
330 [ --enable-purify-safety purify-safe mode],
331 if test "$enable_purify_safety" = "yes"; then
332 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
335 if test -n "$with_cross_host" &&
336 test x"$with_cross_host" != x"no"; then
337 toolexecdir='$(exec_prefix)/$(target_alias)'
338 toolexeclibdir='$(toolexecdir)/lib'
340 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
341 toolexeclibdir='$(libdir)'
343 multi_os_directory=`$CC -print-multi-os-directory`
344 case $multi_os_directory in
345 .) ;; # Avoid trailing /.
346 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
348 AC_SUBST(toolexecdir)
349 AC_SUBST(toolexeclibdir)
351 if test "${multilib}" = "yes"; then
352 multilib_arg="--enable-multilib"
357 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
358 AC_CONFIG_COMMANDS(src, [
359 test -d src || mkdir src
360 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
361 ], [TARGETDIR="$TARGETDIR"])
363 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
365 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)