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-*-solaris*) TARGET=X86; TARGETDIR=x86;;
46 i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;
47 i*86-*-freebsd* | i*86-*-kfreebsd*-gnu) TARGET=X86; TARGETDIR=x86;;
48 i*86-*-netbsdelf* | i*86-*-knetbsd*-gnu) TARGET=X86; TARGETDIR=x86;;
49 i*86-*-win32*) TARGET=X86_WIN32; TARGETDIR=x86;;
50 i*86-*-cygwin*) TARGET=X86_WIN32; TARGETDIR=x86;;
51 i*86-*-mingw*) TARGET=X86_WIN32; TARGETDIR=x86;;
52 frv-*-*) TARGET=FRV; TARGETDIR=frv;;
53 sparc-sun-4*) TARGET=SPARC; TARGETDIR=sparc;;
54 sparc*-sun-*) TARGET=SPARC; TARGETDIR=sparc;;
55 sparc-*-linux* | sparc-*-netbsdelf* | sparc-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
56 sparc64-*-linux* | sparc64-*-netbsd* | sparc64-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
57 alpha*-*-linux* | alpha*-*-osf* | alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu | alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) TARGET=ALPHA; TARGETDIR=alpha;;
58 ia64*-*-*) TARGET=IA64; TARGETDIR=ia64;;
59 m68k-*-linux*) TARGET=M68K; TARGETDIR=m68k;;
61 mips-sgi-irix5.* | mips-sgi-irix6.*) TARGET=MIPS_IRIX; TARGETDIR=mips;;
62 mips*-*-linux*) TARGET=MIPS_LINUX; TARGETDIR=mips;;
63 powerpc*-*-linux* | powerpc-*-sysv*) TARGET=POWERPC; TARGETDIR=powerpc;;
64 powerpc-*-beos*) TARGET=POWERPC; TARGETDIR=powerpc;;
65 powerpc-*-darwin*) TARGET=POWERPC_DARWIN; TARGETDIR=powerpc;;
66 powerpc-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
67 rs6000-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
68 arm*-*-linux-*) TARGET=ARM; TARGETDIR=arm;;
69 arm*-*-netbsdelf* | arm*-*-knetbsd*-gnu) TARGET=ARM; TARGETDIR=arm;;
70 s390-*-linux-*) TARGET=S390; TARGETDIR=s390;;
71 s390x-*-linux-*) TARGET=S390; TARGETDIR=s390;;
72 x86_64-*-linux* | x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu) TARGET=X86_64; TARGETDIR=x86;;
73 sh-*-linux* | sh[[34]]*-*-linux*) TARGET=SH; TARGETDIR=sh;;
74 sh64-*-linux* | sh5*-*-linux*) TARGET=SH64; TARGETDIR=sh64;;
75 hppa-*-linux* | parisc-*-linux*) TARGET=PA; TARGETDIR=pa;;
78 AC_SUBST(AM_RUNTESTFLAGS)
80 if test $TARGETDIR = unknown; then
81 AC_MSG_ERROR(["libffi has not been ported to $host."])
84 AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
85 AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
86 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
87 AM_CONDITIONAL(X86, test x$TARGET = xX86)
88 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
89 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
90 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
91 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
92 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
93 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
94 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
95 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
96 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
97 AM_CONDITIONAL(S390, test x$TARGET = xS390)
98 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
99 AM_CONDITIONAL(SH, test x$TARGET = xSH)
100 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
101 AM_CONDITIONAL(PA, test x$TARGET = xPA)
104 xMIPS*) TARGET=MIPS ;;
109 AC_CHECK_FUNCS(memcpy)
112 AC_COMPILE_CHECK_SIZEOF(double)
113 AC_COMPILE_CHECK_SIZEOF(long double)
115 # Also AC_SUBST this variable for ffi.h.
117 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
118 if test $ac_cv_sizeof_long_double != 0; then
120 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
123 AC_SUBST(HAVE_LONG_DOUBLE)
127 if test x$TARGET = xSPARC; then
128 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
129 libffi_cv_as_sparc_ua_pcrel, [
130 save_CFLAGS="$CFLAGS"
131 save_LDFLAGS="$LDFLAGS"
132 CFLAGS="$CFLAGS -fpic"
133 LDFLAGS="$LDFLAGS -shared"
134 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
135 [libffi_cv_as_sparc_ua_pcrel=yes],
136 [libffi_cv_as_sparc_ua_pcrel=no])
137 CFLAGS="$save_CFLAGS"
138 LDFLAGS="$save_LDFLAGS"])
139 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
140 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
141 [Define if your assembler and linker support unaligned PC relative relocs.])
144 AC_CACHE_CHECK([assembler .register pseudo-op support],
145 libffi_cv_as_register_pseudo_op, [
146 libffi_cv_as_register_pseudo_op=unknown
147 # Check if we have .register
148 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
149 [libffi_cv_as_register_pseudo_op=yes],
150 [libffi_cv_as_register_pseudo_op=no])
152 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
153 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
154 [Define if your assembler supports .register.])
158 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
159 libffi_cv_ro_eh_frame, [
160 libffi_cv_ro_eh_frame=no
161 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
162 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
163 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
164 libffi_cv_ro_eh_frame=yes
165 elif grep '.section.*eh_frame.*#alloc' conftest.c \
166 | grep -v '#write' > /dev/null; then
167 libffi_cv_ro_eh_frame=yes
172 if test "x$libffi_cv_ro_eh_frame" = xyes; then
173 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
174 [Define if .eh_frame sections should be read-only.])
175 AC_DEFINE(EH_FRAME_FLAGS, "a",
176 [Define to the flags needed for the .section .eh_frame directive.])
178 AC_DEFINE(EH_FRAME_FLAGS, "aw",
179 [Define to the flags needed for the .section .eh_frame directive.])
188 [ --enable-debug debugging mode],
189 if test "$enable_debug" = "yes"; then
190 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
193 AC_ARG_ENABLE(structs,
194 [ --disable-structs omit code for struct support],
195 if test "$enable_structs" = "no"; then
196 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
199 AC_ARG_ENABLE(raw-api,
200 [ --disable-raw-api make the raw api unavailable],
201 if test "$enable_raw_api" = "no"; then
202 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
205 AC_ARG_ENABLE(purify-safety,
206 [ --enable-purify-safety purify-safe mode],
207 if test "$enable_purify_safety" = "yes"; then
208 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
211 if test -n "$with_cross_host" &&
212 test x"$with_cross_host" != x"no"; then
213 toolexecdir='$(exec_prefix)/$(target_alias)'
214 toolexeclibdir='$(toolexecdir)/lib'
216 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
217 toolexeclibdir='$(libdir)'
219 multi_os_directory=`$CC -print-multi-os-directory`
220 case $multi_os_directory in
221 .) ;; # Avoid trailing /.
222 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
224 AC_SUBST(toolexecdir)
225 AC_SUBST(toolexeclibdir)
227 #Figure out where generated headers like ffitarget.h get installed.
229 gcc_version_trigger=${srcdir}/../gcc/version.c
230 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
231 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
232 tool_include_dir='$(libdir)/gcc/$(target_alias)/'${gcc_version}/include
234 AC_SUBST(tool_include_dir)
235 AC_SUBST(gcc_version)
238 if test "${multilib}" = "yes"; then
239 multilib_arg="--enable-multilib"
244 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
245 AC_CONFIG_COMMANDS(src, [
246 test -d src || mkdir src
247 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
248 ], [TARGETDIR="$TARGETDIR"])
250 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
252 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)