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(, ..)
10 # This is for automake
11 AC_CONFIG_AUX_DIR([..])
13 # and this is for autoconf
14 AC_CONFIG_AUX_DIRS(${multi_basedir})
18 target_alias=${target_alias-$host_alias}
22 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
23 # We must force CC to /not/ be precious variables; otherwise
24 # the wrong, non-multilib-adjusted value will be used in multilibs.
25 # As a side effect, we have to subst CFLAGS ourselves.
27 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
28 m4_define([_AC_ARG_VAR_PRECIOUS],[])
30 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
40 AC_CHECK_HEADERS(sys/mman.h)
42 AC_FUNC_MMAP_BLACKLIST
44 dnl The -no-testsuite modules omit the test subdir.
45 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
49 i*86-*-linux*) TARGET=X86; TARGETDIR=x86;;
50 i*86-*-solaris*) TARGET=X86; TARGETDIR=x86;;
51 i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;
52 i*86-*-freebsd*) TARGET=X86; TARGETDIR=x86;;
53 i*86-*-netbsdelf*) TARGET=X86; TARGETDIR=x86;;
54 i*86-*-win32*) TARGET=X86_WIN32; TARGETDIR=x86;;
55 i*86-*-cygwin*) TARGET=X86_WIN32; TARGETDIR=x86;;
56 i*86-*-mingw*) TARGET=X86_WIN32; TARGETDIR=x86;;
57 sparc-sun-4*) TARGET=SPARC; TARGETDIR=sparc;;
58 sparc*-sun-*) TARGET=SPARC; TARGETDIR=sparc;;
59 sparc-*-linux* | sparc-*-netbsdelf*) TARGET=SPARC; TARGETDIR=sparc;;
60 sparc64-*-linux* | sparc64-*-netbsd*) TARGET=SPARC; TARGETDIR=sparc;;
61 alpha*-*-linux* | alpha*-*-osf* | alpha*-*-freebsd* | alpha*-*-netbsd*) TARGET=ALPHA; TARGETDIR=alpha;;
62 ia64*-*-*) TARGET=IA64; TARGETDIR=ia64;;
63 m68k-*-linux*) TARGET=M68K; TARGETDIR=m68k;;
65 mips-sgi-irix5.* | mips-sgi-irix6.*) TARGET=MIPS_IRIX; TARGETDIR=mips;;
66 mips*-*-linux*) TARGET=MIPS_LINUX; TARGETDIR=mips;;
67 powerpc*-*-linux* | powerpc-*-sysv*) TARGET=POWERPC; TARGETDIR=powerpc;;
68 powerpc-*-beos*) TARGET=POWERPC; TARGETDIR=powerpc;;
69 powerpc-*-darwin*) TARGET=POWERPC_DARWIN; TARGETDIR=powerpc;;
70 powerpc-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
71 rs6000-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
72 arm*-*-linux-*) TARGET=ARM; TARGETDIR=arm;;
73 arm*-*-netbsdelf*) TARGET=ARM; TARGETDIR=arm;;
74 s390-*-linux-*) TARGET=S390; TARGETDIR=s390;;
75 s390x-*-linux-*) TARGET=S390; TARGETDIR=s390;;
76 x86_64-*-linux* | x86_64-*-freebsd*) TARGET=X86_64; TARGETDIR=x86;;
77 sh-*-linux* | sh[[34]]*-*-linux*) TARGET=SH; TARGETDIR=sh;;
78 sh64-*-linux* | sh5*-*-linux*) TARGET=SH64; TARGETDIR=sh64;;
79 hppa-*-linux* | parisc-*-linux*) TARGET=PA; TARGETDIR=pa;;
82 AC_SUBST(AM_RUNTESTFLAGS)
84 if test $TARGETDIR = unknown; then
85 AC_MSG_ERROR(["libffi has not been ported to $host."])
88 AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
89 AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
90 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
91 AM_CONDITIONAL(X86, test x$TARGET = xX86)
92 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
93 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
94 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
95 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
96 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
97 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
98 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
99 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
100 AM_CONDITIONAL(S390, test x$TARGET = xS390)
101 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
102 AM_CONDITIONAL(SH, test x$TARGET = xSH)
103 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
104 AM_CONDITIONAL(PA, test x$TARGET = xPA)
107 xMIPS*) TARGET=MIPS ;;
112 AC_CHECK_FUNCS(memcpy)
115 AC_COMPILE_CHECK_SIZEOF(double)
116 AC_COMPILE_CHECK_SIZEOF(long double)
118 # Also AC_SUBST this variable for ffi.h.
120 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
121 if test $ac_cv_sizeof_long_double != 0; then
123 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
126 AC_SUBST(HAVE_LONG_DOUBLE)
130 if test x$TARGET = xSPARC; then
131 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
132 libffi_cv_as_sparc_ua_pcrel, [
133 save_CFLAGS="$CFLAGS"
134 save_LDFLAGS="$LDFLAGS"
135 CFLAGS="$CFLAGS -fpic"
136 LDFLAGS="$LDFLAGS -shared"
137 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
138 [libffi_cv_as_sparc_ua_pcrel=yes],
139 [libffi_cv_as_sparc_ua_pcrel=no])
140 CFLAGS="$save_CFLAGS"
141 LDFLAGS="$save_LDFLAGS"])
142 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
143 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
144 [Define if your assembler and linker support unaligned PC relative relocs.])
147 AC_CACHE_CHECK([assembler .register pseudo-op support],
148 libffi_cv_as_register_pseudo_op, [
149 libffi_cv_as_register_pseudo_op=unknown
150 # Check if we have .register
151 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
152 [libffi_cv_as_register_pseudo_op=yes],
153 [libffi_cv_as_register_pseudo_op=no])
155 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
156 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
157 [Define if your assembler supports .register.])
161 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
162 libffi_cv_ro_eh_frame, [
163 libffi_cv_ro_eh_frame=no
164 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
165 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
166 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
167 libffi_cv_ro_eh_frame=yes
168 elif grep '.section.*eh_frame.*#alloc' conftest.c \
169 | grep -v '#write' > /dev/null; then
170 libffi_cv_ro_eh_frame=yes
175 if test "x$libffi_cv_ro_eh_frame" = xyes; then
176 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
177 [Define if .eh_frame sections should be read-only.])
178 AC_DEFINE(EH_FRAME_FLAGS, "a",
179 [Define to the flags needed for the .section .eh_frame directive.])
181 AC_DEFINE(EH_FRAME_FLAGS, "aw",
182 [Define to the flags needed for the .section .eh_frame directive.])
191 [ --enable-debug debugging mode],
192 if test "$enable_debug" = "yes"; then
193 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
196 AC_ARG_ENABLE(structs,
197 [ --disable-structs omit code for struct support],
198 if test "$enable_structs" = "no"; then
199 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
202 AC_ARG_ENABLE(raw-api,
203 [ --disable-raw-api make the raw api unavailable],
204 if test "$enable_raw_api" = "no"; then
205 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
208 AC_ARG_ENABLE(purify-safety,
209 [ --enable-purify-safety purify-safe mode],
210 if test "$enable_purify_safety" = "yes"; then
211 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
214 if test -n "$with_cross_host" &&
215 test x"$with_cross_host" != x"no"; then
216 toolexecdir='$(exec_prefix)/$(target_alias)'
217 toolexeclibdir='$(toolexecdir)/lib'
219 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
220 toolexeclibdir='$(libdir)'
222 multi_os_directory=`$CC -print-multi-os-directory`
223 case $multi_os_directory in
224 .) ;; # Avoid trailing /.
225 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
227 AC_SUBST(toolexecdir)
228 AC_SUBST(toolexeclibdir)
230 #Figure out where generated headers like ffitarget.h get installed.
232 gcc_version_trigger=${srcdir}/../gcc/version.c
233 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
234 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
235 tool_include_dir='$(libdir)/gcc/$(target_alias)/'${gcc_version}/include
237 AC_SUBST(tool_include_dir)
238 AC_SUBST(gcc_version)
241 if test "${multilib}" = "yes"; then
242 multilib_arg="--enable-multilib"
247 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
248 AC_CONFIG_COMMANDS(src, [
249 test -d src || mkdir src
250 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
251 ], [TARGETDIR="$TARGETDIR"])
253 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
255 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)