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)
44 i*86-*-linux*) TARGET=X86; TARGETDIR=x86;;
45 i*86-*-gnu*) TARGET=X86; TARGETDIR=x86;;
46 i*86-*-solaris2.1[[0-9]]*) TARGET=X86_64; TARGETDIR=x86;;
47 i*86-*-solaris*) TARGET=X86; TARGETDIR=x86;;
48 i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;
49 i*86-*-freebsd* | i*86-*-kfreebsd*-gnu) TARGET=X86; TARGETDIR=x86;;
50 i*86-*-netbsdelf* | i*86-*-knetbsd*-gnu) TARGET=X86; TARGETDIR=x86;;
51 i*86-*-rtems*) TARGET=X86; TARGETDIR=x86;;
52 i*86-*-win32*) TARGET=X86_WIN32; TARGETDIR=x86;;
53 i*86-*-cygwin*) TARGET=X86_WIN32; TARGETDIR=x86;;
54 i*86-*-mingw*) TARGET=X86_WIN32; TARGETDIR=x86;;
55 frv-*-*) TARGET=FRV; TARGETDIR=frv;;
56 sparc-sun-4*) TARGET=SPARC; TARGETDIR=sparc;;
57 sparc*-sun-*) TARGET=SPARC; TARGETDIR=sparc;;
58 sparc-*-linux* | sparc-*-netbsdelf* | sparc-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
59 sparc*-*-rtems*) TARGET=SPARC; TARGETDIR=sparc;;
60 sparc64-*-linux* | sparc64-*-freebsd* | sparc64-*-netbsd* | sparc64-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
61 alpha*-*-linux* | alpha*-*-osf* | alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu | alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) TARGET=ALPHA; TARGETDIR=alpha;;
62 ia64*-*-*) TARGET=IA64; TARGETDIR=ia64;;
63 m32r*-*-linux* ) TARGET=M32R; TARGETDIR=m32r;;
64 m68k-*-linux*) TARGET=M68K; TARGETDIR=m68k;;
66 mips-sgi-irix5.* | mips-sgi-irix6.*) TARGET=MIPS_IRIX; TARGETDIR=mips;;
67 mips*-*-linux*) TARGET=MIPS_LINUX; TARGETDIR=mips;;
68 powerpc*-*-linux* | powerpc-*-sysv*) TARGET=POWERPC; TARGETDIR=powerpc;;
69 powerpc-*-beos*) TARGET=POWERPC; TARGETDIR=powerpc;;
70 powerpc-*-darwin*) TARGET=POWERPC_DARWIN; TARGETDIR=powerpc;;
71 powerpc-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
72 powerpc-*-freebsd*) TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc;;
73 powerpc*-*-rtems*) TARGET=POWERPC; TARGETDIR=powerpc;;
74 rs6000-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
75 arm*-*-linux-*) TARGET=ARM; TARGETDIR=arm;;
76 arm*-*-netbsdelf* | arm*-*-knetbsd*-gnu) TARGET=ARM; TARGETDIR=arm;;
77 arm*-*-rtems*) TARGET=ARM; TARGETDIR=arm;;
78 cris-*-*) TARGET=LIBFFI_CRIS; TARGETDIR=cris;;
79 s390-*-linux-*) TARGET=S390; TARGETDIR=s390;;
80 s390x-*-linux-*) TARGET=S390; TARGETDIR=s390;;
81 x86_64-*-linux* | x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu) TARGET=X86_64; TARGETDIR=x86;;
82 sh-*-linux* | sh[[34]]*-*-linux*) TARGET=SH; TARGETDIR=sh;;
83 sh-*-rtems*) TARGET=SH; TARGETDIR=sh;;
84 sh64-*-linux* | sh5*-*-linux*) TARGET=SH64; TARGETDIR=sh64;;
85 hppa*-*-linux* | parisc*-*-linux*) TARGET=PA_LINUX; TARGETDIR=pa;;
86 hppa*64-*-hpux*) TARGET=PA64_HPUX; TARGETDIR=pa;;
87 hppa*-*-hpux*) TARGET=PA_HPUX; TARGETDIR=pa;;
90 AC_SUBST(AM_RUNTESTFLAGS)
92 if test $TARGETDIR = unknown; then
93 AC_MSG_ERROR(["libffi has not been ported to $host."])
96 AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
97 AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
98 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
99 AM_CONDITIONAL(X86, test x$TARGET = xX86)
100 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
101 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
102 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
103 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
104 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
105 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
106 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
107 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
108 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
109 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
110 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
111 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
112 AM_CONDITIONAL(S390, test x$TARGET = xS390)
113 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
114 AM_CONDITIONAL(SH, test x$TARGET = xSH)
115 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
116 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
117 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
118 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
121 xMIPS*) TARGET=MIPS ;;
126 AC_CHECK_FUNCS(memcpy)
129 AC_CHECK_SIZEOF(double)
130 AC_CHECK_SIZEOF(long double)
132 # Also AC_SUBST this variable for ffi.h.
134 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
135 if test $ac_cv_sizeof_long_double != 0; then
137 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
140 AC_SUBST(HAVE_LONG_DOUBLE)
144 if test x$TARGET = xSPARC; then
145 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
146 libffi_cv_as_sparc_ua_pcrel, [
147 save_CFLAGS="$CFLAGS"
148 save_LDFLAGS="$LDFLAGS"
149 CFLAGS="$CFLAGS -fpic"
150 LDFLAGS="$LDFLAGS -shared"
151 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
152 [libffi_cv_as_sparc_ua_pcrel=yes],
153 [libffi_cv_as_sparc_ua_pcrel=no])
154 CFLAGS="$save_CFLAGS"
155 LDFLAGS="$save_LDFLAGS"])
156 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
157 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
158 [Define if your assembler and linker support unaligned PC relative relocs.])
161 AC_CACHE_CHECK([assembler .register pseudo-op support],
162 libffi_cv_as_register_pseudo_op, [
163 libffi_cv_as_register_pseudo_op=unknown
164 # Check if we have .register
165 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
166 [libffi_cv_as_register_pseudo_op=yes],
167 [libffi_cv_as_register_pseudo_op=no])
169 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
170 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
171 [Define if your assembler supports .register.])
175 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
176 libffi_cv_ro_eh_frame, [
177 libffi_cv_ro_eh_frame=no
178 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
179 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
180 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
181 libffi_cv_ro_eh_frame=yes
182 elif grep '.section.*eh_frame.*#alloc' conftest.c \
183 | grep -v '#write' > /dev/null; then
184 libffi_cv_ro_eh_frame=yes
189 if test "x$libffi_cv_ro_eh_frame" = xyes; then
190 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
191 [Define if .eh_frame sections should be read-only.])
192 AC_DEFINE(EH_FRAME_FLAGS, "a",
193 [Define to the flags needed for the .section .eh_frame directive.])
195 AC_DEFINE(EH_FRAME_FLAGS, "aw",
196 [Define to the flags needed for the .section .eh_frame directive.])
199 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
200 libffi_cv_hidden_visibility_attribute, [
201 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
202 libffi_cv_hidden_visibility_attribute=no
203 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
204 if grep '\.hidden.*foo' conftest.s >/dev/null; then
205 libffi_cv_hidden_visibility_attribute=yes
210 if test $libffi_cv_hidden_visibility_attribute = yes; then
211 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
212 [Define if __attribute__((visibility("hidden"))) is supported.])
216 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
218 #define FFI_HIDDEN(name) .hidden name
220 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
224 #define FFI_HIDDEN(name)
237 [ --enable-debug debugging mode],
238 if test "$enable_debug" = "yes"; then
239 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
242 AC_ARG_ENABLE(structs,
243 [ --disable-structs omit code for struct support],
244 if test "$enable_structs" = "no"; then
245 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
248 AC_ARG_ENABLE(raw-api,
249 [ --disable-raw-api make the raw api unavailable],
250 if test "$enable_raw_api" = "no"; then
251 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
254 AC_ARG_ENABLE(purify-safety,
255 [ --enable-purify-safety purify-safe mode],
256 if test "$enable_purify_safety" = "yes"; then
257 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
260 if test -n "$with_cross_host" &&
261 test x"$with_cross_host" != x"no"; then
262 toolexecdir='$(exec_prefix)/$(target_alias)'
263 toolexeclibdir='$(toolexecdir)/lib'
265 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
266 toolexeclibdir='$(libdir)'
268 multi_os_directory=`$CC -print-multi-os-directory`
269 case $multi_os_directory in
270 .) ;; # Avoid trailing /.
271 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
273 AC_SUBST(toolexecdir)
274 AC_SUBST(toolexeclibdir)
276 if test "${multilib}" = "yes"; then
277 multilib_arg="--enable-multilib"
282 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
283 AC_CONFIG_COMMANDS(src, [
284 test -d src || mkdir src
285 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
286 ], [TARGETDIR="$TARGETDIR"])
288 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
290 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)