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-*-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; TARGETDIR=pa;;
88 AC_SUBST(AM_RUNTESTFLAGS)
90 if test $TARGETDIR = unknown; then
91 AC_MSG_ERROR(["libffi has not been ported to $host."])
94 AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
95 AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
96 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
97 AM_CONDITIONAL(X86, test x$TARGET = xX86)
98 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
99 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
100 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
101 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
102 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
103 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
104 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
105 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
106 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
107 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
108 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
109 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
110 AM_CONDITIONAL(S390, test x$TARGET = xS390)
111 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
112 AM_CONDITIONAL(SH, test x$TARGET = xSH)
113 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
114 AM_CONDITIONAL(PA, test x$TARGET = xPA)
117 xMIPS*) TARGET=MIPS ;;
122 AC_CHECK_FUNCS(memcpy)
125 AC_CHECK_SIZEOF(double)
126 AC_CHECK_SIZEOF(long double)
128 # Also AC_SUBST this variable for ffi.h.
130 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
131 if test $ac_cv_sizeof_long_double != 0; then
133 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
136 AC_SUBST(HAVE_LONG_DOUBLE)
140 if test x$TARGET = xSPARC; then
141 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
142 libffi_cv_as_sparc_ua_pcrel, [
143 save_CFLAGS="$CFLAGS"
144 save_LDFLAGS="$LDFLAGS"
145 CFLAGS="$CFLAGS -fpic"
146 LDFLAGS="$LDFLAGS -shared"
147 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
148 [libffi_cv_as_sparc_ua_pcrel=yes],
149 [libffi_cv_as_sparc_ua_pcrel=no])
150 CFLAGS="$save_CFLAGS"
151 LDFLAGS="$save_LDFLAGS"])
152 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
153 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
154 [Define if your assembler and linker support unaligned PC relative relocs.])
157 AC_CACHE_CHECK([assembler .register pseudo-op support],
158 libffi_cv_as_register_pseudo_op, [
159 libffi_cv_as_register_pseudo_op=unknown
160 # Check if we have .register
161 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
162 [libffi_cv_as_register_pseudo_op=yes],
163 [libffi_cv_as_register_pseudo_op=no])
165 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
166 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
167 [Define if your assembler supports .register.])
171 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
172 libffi_cv_ro_eh_frame, [
173 libffi_cv_ro_eh_frame=no
174 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
175 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
176 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
177 libffi_cv_ro_eh_frame=yes
178 elif grep '.section.*eh_frame.*#alloc' conftest.c \
179 | grep -v '#write' > /dev/null; then
180 libffi_cv_ro_eh_frame=yes
185 if test "x$libffi_cv_ro_eh_frame" = xyes; then
186 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
187 [Define if .eh_frame sections should be read-only.])
188 AC_DEFINE(EH_FRAME_FLAGS, "a",
189 [Define to the flags needed for the .section .eh_frame directive.])
191 AC_DEFINE(EH_FRAME_FLAGS, "aw",
192 [Define to the flags needed for the .section .eh_frame directive.])
195 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
196 libffi_cv_hidden_visibility_attribute, [
197 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
198 libffi_cv_hidden_visibility_attribute=no
199 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
200 if grep '\.hidden.*foo' conftest.s >/dev/null; then
201 libffi_cv_hidden_visibility_attribute=yes
206 if test $libffi_cv_hidden_visibility_attribute = yes; then
207 AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
208 [Define if __attribute__((visibility("hidden"))) is supported.])
212 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
214 #define FFI_HIDDEN(name) .hidden name
216 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
220 #define FFI_HIDDEN(name)
233 [ --enable-debug debugging mode],
234 if test "$enable_debug" = "yes"; then
235 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
238 AC_ARG_ENABLE(structs,
239 [ --disable-structs omit code for struct support],
240 if test "$enable_structs" = "no"; then
241 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
244 AC_ARG_ENABLE(raw-api,
245 [ --disable-raw-api make the raw api unavailable],
246 if test "$enable_raw_api" = "no"; then
247 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
250 AC_ARG_ENABLE(purify-safety,
251 [ --enable-purify-safety purify-safe mode],
252 if test "$enable_purify_safety" = "yes"; then
253 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
256 if test -n "$with_cross_host" &&
257 test x"$with_cross_host" != x"no"; then
258 toolexecdir='$(exec_prefix)/$(target_alias)'
259 toolexeclibdir='$(toolexecdir)/lib'
261 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
262 toolexeclibdir='$(libdir)'
264 multi_os_directory=`$CC -print-multi-os-directory`
265 case $multi_os_directory in
266 .) ;; # Avoid trailing /.
267 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
269 AC_SUBST(toolexecdir)
270 AC_SUBST(toolexeclibdir)
272 if test "${multilib}" = "yes"; then
273 multilib_arg="--enable-multilib"
278 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
279 AC_CONFIG_COMMANDS(src, [
280 test -d src || mkdir src
281 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
282 ], [TARGETDIR="$TARGETDIR"])
284 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
286 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)