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}
15 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
16 # We must force CC to /not/ be precious variables; otherwise
17 # the wrong, non-multilib-adjusted value will be used in multilibs.
18 # As a side effect, we have to subst CFLAGS ourselves.
20 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
21 m4_define([_AC_ARG_VAR_PRECIOUS],[])
23 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
33 AC_CHECK_HEADERS(sys/mman.h)
35 AC_FUNC_MMAP_BLACKLIST
37 dnl The -no-testsuite modules omit the test subdir.
38 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
42 i*86-*-linux*) TARGET=X86; TARGETDIR=x86;;
43 i*86-*-solaris*) TARGET=X86; TARGETDIR=x86;;
44 i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;
45 i*86-*-freebsd* | i*86-*-kfreebsd*-gnu) TARGET=X86; TARGETDIR=x86;;
46 i*86-*-netbsdelf* | i*86-*-knetbsd*-gnu) TARGET=X86; TARGETDIR=x86;;
47 i*86-*-win32*) TARGET=X86_WIN32; TARGETDIR=x86;;
48 i*86-*-cygwin*) TARGET=X86_WIN32; TARGETDIR=x86;;
49 i*86-*-mingw*) TARGET=X86_WIN32; TARGETDIR=x86;;
50 sparc-sun-4*) TARGET=SPARC; TARGETDIR=sparc;;
51 sparc*-sun-*) TARGET=SPARC; TARGETDIR=sparc;;
52 sparc-*-linux* | sparc-*-netbsdelf* | sparc-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
53 sparc64-*-linux* | sparc64-*-netbsd* | sparc64-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
54 alpha*-*-linux* | alpha*-*-osf* | alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu | alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) TARGET=ALPHA; TARGETDIR=alpha;;
55 ia64*-*-*) TARGET=IA64; TARGETDIR=ia64;;
56 m68k-*-linux*) TARGET=M68K; TARGETDIR=m68k;;
58 mips-sgi-irix5.* | mips-sgi-irix6.*) TARGET=MIPS_IRIX; TARGETDIR=mips;;
59 mips*-*-linux*) TARGET=MIPS_LINUX; TARGETDIR=mips;;
60 powerpc*-*-linux* | powerpc-*-sysv*) TARGET=POWERPC; TARGETDIR=powerpc;;
61 powerpc-*-beos*) TARGET=POWERPC; TARGETDIR=powerpc;;
62 powerpc-*-darwin*) TARGET=POWERPC_DARWIN; TARGETDIR=powerpc;;
63 powerpc-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
64 rs6000-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
65 arm*-*-linux-*) TARGET=ARM; TARGETDIR=arm;;
66 arm*-*-netbsdelf* | arm*-*-knetbsd*-gnu) TARGET=ARM; TARGETDIR=arm;;
67 s390-*-linux-*) TARGET=S390; TARGETDIR=s390;;
68 s390x-*-linux-*) TARGET=S390; TARGETDIR=s390;;
69 x86_64-*-linux* | x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu) TARGET=X86_64; TARGETDIR=x86;;
70 sh-*-linux* | sh[[34]]*-*-linux*) TARGET=SH; TARGETDIR=sh;;
71 sh64-*-linux* | sh5*-*-linux*) TARGET=SH64; TARGETDIR=sh64;;
72 hppa-*-linux* | parisc-*-linux*) TARGET=PA; TARGETDIR=pa;;
75 AC_SUBST(AM_RUNTESTFLAGS)
77 if test $TARGETDIR = unknown; then
78 AC_MSG_ERROR(["libffi has not been ported to $host."])
81 AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
82 AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
83 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
84 AM_CONDITIONAL(X86, test x$TARGET = xX86)
85 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
86 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
87 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
88 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
89 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
90 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
91 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
92 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
93 AM_CONDITIONAL(S390, test x$TARGET = xS390)
94 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
95 AM_CONDITIONAL(SH, test x$TARGET = xSH)
96 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
97 AM_CONDITIONAL(PA, test x$TARGET = xPA)
100 xMIPS*) TARGET=MIPS ;;
105 AC_CHECK_FUNCS(memcpy)
108 AC_COMPILE_CHECK_SIZEOF(double)
109 AC_COMPILE_CHECK_SIZEOF(long double)
111 # Also AC_SUBST this variable for ffi.h.
113 if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
114 if test $ac_cv_sizeof_long_double != 0; then
116 AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
119 AC_SUBST(HAVE_LONG_DOUBLE)
123 if test x$TARGET = xSPARC; then
124 AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
125 libffi_cv_as_sparc_ua_pcrel, [
126 save_CFLAGS="$CFLAGS"
127 save_LDFLAGS="$LDFLAGS"
128 CFLAGS="$CFLAGS -fpic"
129 LDFLAGS="$LDFLAGS -shared"
130 AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
131 [libffi_cv_as_sparc_ua_pcrel=yes],
132 [libffi_cv_as_sparc_ua_pcrel=no])
133 CFLAGS="$save_CFLAGS"
134 LDFLAGS="$save_LDFLAGS"])
135 if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
136 AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
137 [Define if your assembler and linker support unaligned PC relative relocs.])
140 AC_CACHE_CHECK([assembler .register pseudo-op support],
141 libffi_cv_as_register_pseudo_op, [
142 libffi_cv_as_register_pseudo_op=unknown
143 # Check if we have .register
144 AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
145 [libffi_cv_as_register_pseudo_op=yes],
146 [libffi_cv_as_register_pseudo_op=no])
148 if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
149 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
150 [Define if your assembler supports .register.])
154 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
155 libffi_cv_ro_eh_frame, [
156 libffi_cv_ro_eh_frame=no
157 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
158 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
159 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
160 libffi_cv_ro_eh_frame=yes
161 elif grep '.section.*eh_frame.*#alloc' conftest.c \
162 | grep -v '#write' > /dev/null; then
163 libffi_cv_ro_eh_frame=yes
168 if test "x$libffi_cv_ro_eh_frame" = xyes; then
169 AC_DEFINE(HAVE_RO_EH_FRAME, 1,
170 [Define if .eh_frame sections should be read-only.])
171 AC_DEFINE(EH_FRAME_FLAGS, "a",
172 [Define to the flags needed for the .section .eh_frame directive.])
174 AC_DEFINE(EH_FRAME_FLAGS, "aw",
175 [Define to the flags needed for the .section .eh_frame directive.])
184 [ --enable-debug debugging mode],
185 if test "$enable_debug" = "yes"; then
186 AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
189 AC_ARG_ENABLE(structs,
190 [ --disable-structs omit code for struct support],
191 if test "$enable_structs" = "no"; then
192 AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
195 AC_ARG_ENABLE(raw-api,
196 [ --disable-raw-api make the raw api unavailable],
197 if test "$enable_raw_api" = "no"; then
198 AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
201 AC_ARG_ENABLE(purify-safety,
202 [ --enable-purify-safety purify-safe mode],
203 if test "$enable_purify_safety" = "yes"; then
204 AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
207 if test -n "$with_cross_host" &&
208 test x"$with_cross_host" != x"no"; then
209 toolexecdir='$(exec_prefix)/$(target_alias)'
210 toolexeclibdir='$(toolexecdir)/lib'
212 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
213 toolexeclibdir='$(libdir)'
215 multi_os_directory=`$CC -print-multi-os-directory`
216 case $multi_os_directory in
217 .) ;; # Avoid trailing /.
218 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
220 AC_SUBST(toolexecdir)
221 AC_SUBST(toolexeclibdir)
223 #Figure out where generated headers like ffitarget.h get installed.
225 gcc_version_trigger=${srcdir}/../gcc/version.c
226 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
227 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
228 tool_include_dir='$(libdir)/gcc/$(target_alias)/'${gcc_version}/include
230 AC_SUBST(tool_include_dir)
231 AC_SUBST(gcc_version)
234 if test "${multilib}" = "yes"; then
235 multilib_arg="--enable-multilib"
240 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
241 AC_CONFIG_COMMANDS(src, [
242 test -d src || mkdir src
243 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
244 ], [TARGETDIR="$TARGETDIR"])
246 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
248 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)