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      1 dnl Process this with autoconf to create configure
      2 
      3 AC_PREREQ(2.59)
      4 
      5 AC_INIT([libffi], [3.0.6], [http://gcc.gnu.org/bugs.html])
      6 AC_CONFIG_HEADERS([fficonfig.h])
      7 
      8 AC_CANONICAL_SYSTEM
      9 target_alias=${target_alias-$host_alias}
     10 
     11 . ${srcdir}/configure.host
     12 
     13 AM_INIT_AUTOMAKE
     14 
     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.
     19 
     20 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
     21 m4_define([_AC_ARG_VAR_PRECIOUS],[])
     22 AC_PROG_CC
     23 m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
     24 
     25 AC_SUBST(CFLAGS)
     26 
     27 AM_PROG_AS
     28 AM_PROG_CC_C_O
     29 AC_PROG_LIBTOOL
     30 
     31 AM_MAINTAINER_MODE
     32 
     33 AC_CHECK_HEADERS(sys/mman.h)
     34 AC_CHECK_FUNCS(mmap)
     35 AC_FUNC_MMAP_BLACKLIST
     36 
     37 dnl The -no-testsuite modules omit the test subdir.
     38 AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
     39 
     40 TARGETDIR="unknown"
     41 case "$host" in
     42   alpha*-*-*)
     43 	TARGET=ALPHA; TARGETDIR=alpha;
     44 	# Support 128-bit long double, changable via command-line switch.
     45 	HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
     46 	;;
     47 
     48   arm*-*-*)
     49 	TARGET=ARM; TARGETDIR=arm
     50 	;;
     51 
     52   amd64-*-freebsd*)
     53 	TARGET=X86_64; TARGETDIR=x86
     54   	;;
     55 
     56   cris-*-*)
     57 	TARGET=LIBFFI_CRIS; TARGETDIR=cris
     58 	;;
     59 
     60   frv-*-*)
     61 	TARGET=FRV; TARGETDIR=frv
     62 	;;
     63 
     64   hppa*-*-linux* | parisc*-*-linux*)
     65 	TARGET=PA_LINUX; TARGETDIR=pa
     66 	;;
     67   hppa*64-*-hpux*)
     68 	TARGET=PA64_HPUX; TARGETDIR=pa
     69 	;;
     70   hppa*-*-hpux*)
     71 	TARGET=PA_HPUX; TARGETDIR=pa
     72 	;;
     73 
     74   i386-*-freebsd* | i386-*-openbsd*)
     75 	TARGET=X86_FREEBSD; TARGETDIR=x86
     76 	;;
     77   i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
     78 	TARGET=X86_WIN32; TARGETDIR=x86
     79 	;;
     80   i?86-*-darwin*)
     81 	TARGET=X86_DARWIN; TARGETDIR=x86
     82 	;;
     83   i?86-*-solaris2.1[[0-9]]*)
     84 	TARGET=X86_64; TARGETDIR=x86
     85 	;;
     86   i?86-*-*)
     87 	TARGET=X86; TARGETDIR=x86
     88 	;;
     89 
     90   ia64*-*-*)
     91 	TARGET=IA64; TARGETDIR=ia64
     92 	;;
     93 
     94   m32r*-*-*)
     95 	TARGET=M32R; TARGETDIR=m32r
     96 	;;
     97 
     98   m68k-*-*)
     99 	TARGET=M68K; TARGETDIR=m68k
    100 	;;
    101 
    102   mips-sgi-irix5.* | mips-sgi-irix6.*)
    103 	TARGET=MIPS; TARGETDIR=mips
    104 	;;
    105   mips*-*-linux*)
    106 	TARGET=MIPS; TARGETDIR=mips
    107 	;;
    108 
    109   powerpc*-*-linux* | powerpc-*-sysv*)
    110 	TARGET=POWERPC; TARGETDIR=powerpc
    111 	;;
    112   powerpc-*-beos*)
    113 	TARGET=POWERPC; TARGETDIR=powerpc
    114 	;;
    115   powerpc-*-darwin*)
    116 	TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
    117 	;;
    118   powerpc-*-aix* | rs6000-*-aix*)
    119 	TARGET=POWERPC_AIX; TARGETDIR=powerpc
    120 	;;
    121   powerpc-*-freebsd*)
    122 	TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
    123 	;;
    124   powerpc*-*-rtems*)
    125 	TARGET=POWERPC; TARGETDIR=powerpc
    126 	;;
    127 
    128   s390-*-* | s390x-*-*)
    129 	TARGET=S390; TARGETDIR=s390
    130 	;;
    131 
    132   sh-*-* | sh[[34]]*-*-*)
    133 	TARGET=SH; TARGETDIR=sh
    134 	;;
    135   sh64-*-* | sh5*-*-*)
    136 	TARGET=SH64; TARGETDIR=sh64
    137 	;;
    138 
    139   sparc*-*-*)
    140 	TARGET=SPARC; TARGETDIR=sparc
    141 	;;
    142 
    143   x86_64-*-darwin*)
    144 	TARGET=X86_DARWIN; TARGETDIR=x86
    145 	;;
    146   x86_64-*-cygwin* | x86_64-*-mingw*)
    147 	;;
    148   x86_64-*-*)
    149 	TARGET=X86_64; TARGETDIR=x86
    150 	;;
    151 esac
    152 
    153 AC_SUBST(AM_RUNTESTFLAGS)
    154 
    155 if test $TARGETDIR = unknown; then
    156   AC_MSG_ERROR(["libffi has not been ported to $host."])
    157 fi
    158 
    159 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
    160 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
    161 AM_CONDITIONAL(X86, test x$TARGET = xX86)
    162 AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
    163 AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
    164 AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
    165 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
    166 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
    167 AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
    168 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
    169 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
    170 AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
    171 AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
    172 AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
    173 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
    174 AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
    175 AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
    176 AM_CONDITIONAL(S390, test x$TARGET = xS390)
    177 AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
    178 AM_CONDITIONAL(SH, test x$TARGET = xSH)
    179 AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
    180 AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
    181 AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
    182 AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
    183 
    184 AC_HEADER_STDC
    185 AC_CHECK_FUNCS(memcpy)
    186 AC_FUNC_ALLOCA
    187 
    188 AC_CHECK_SIZEOF(double)
    189 AC_CHECK_SIZEOF(long double)
    190 
    191 # Also AC_SUBST this variable for ffi.h.
    192 if test -z "$HAVE_LONG_DOUBLE"; then
    193   HAVE_LONG_DOUBLE=0
    194   if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
    195     if test $ac_cv_sizeof_long_double != 0; then
    196       HAVE_LONG_DOUBLE=1
    197       AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
    198     fi
    199   fi
    200 fi
    201 AC_SUBST(HAVE_LONG_DOUBLE)
    202 
    203 AC_C_BIGENDIAN
    204 
    205 AC_CACHE_CHECK([assembler .cfi pseudo-op support],
    206     libffi_cv_as_cfi_pseudo_op, [
    207     libffi_cv_as_cfi_pseudo_op=unknown
    208     AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
    209 		   [libffi_cv_as_cfi_pseudo_op=yes],
    210 		   [libffi_cv_as_cfi_pseudo_op=no])
    211 ])
    212 if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
    213     AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
    214 	      [Define if your assembler supports .cfi_* directives.])
    215 fi
    216 
    217 if test x$TARGET = xSPARC; then
    218     AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
    219 	libffi_cv_as_sparc_ua_pcrel, [
    220 	save_CFLAGS="$CFLAGS"
    221 	save_LDFLAGS="$LDFLAGS"
    222 	CFLAGS="$CFLAGS -fpic"
    223 	LDFLAGS="$LDFLAGS -shared"
    224 	AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
    225 		    [libffi_cv_as_sparc_ua_pcrel=yes],
    226 		    [libffi_cv_as_sparc_ua_pcrel=no])
    227 	CFLAGS="$save_CFLAGS"
    228 	LDFLAGS="$save_LDFLAGS"])
    229     if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
    230 	AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
    231 		  [Define if your assembler and linker support unaligned PC relative relocs.])
    232     fi
    233 
    234     AC_CACHE_CHECK([assembler .register pseudo-op support],
    235        libffi_cv_as_register_pseudo_op, [
    236        libffi_cv_as_register_pseudo_op=unknown
    237        # Check if we have .register
    238        AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
    239 		       [libffi_cv_as_register_pseudo_op=yes],
    240 		       [libffi_cv_as_register_pseudo_op=no])
    241     ])
    242     if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
    243        AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
    244 	       [Define if your assembler supports .register.])
    245     fi
    246 fi
    247 
    248 AC_CACHE_CHECK([whether .eh_frame section should be read-only],
    249     libffi_cv_ro_eh_frame, [
    250 	libffi_cv_ro_eh_frame=no
    251 	echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
    252 	if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
    253 	    if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
    254 		libffi_cv_ro_eh_frame=yes
    255 	    elif grep '.section.*eh_frame.*#alloc' conftest.c \
    256 		 | grep -v '#write' > /dev/null; then
    257 		libffi_cv_ro_eh_frame=yes
    258 	    fi
    259 	fi
    260 	rm -f conftest.*
    261     ])
    262 if test "x$libffi_cv_ro_eh_frame" = xyes; then
    263     AC_DEFINE(HAVE_RO_EH_FRAME, 1,
    264 	      [Define if .eh_frame sections should be read-only.])
    265     AC_DEFINE(EH_FRAME_FLAGS, "a",
    266 	      [Define to the flags needed for the .section .eh_frame directive.])
    267 else
    268     AC_DEFINE(EH_FRAME_FLAGS, "aw",
    269 	      [Define to the flags needed for the .section .eh_frame directive.])
    270 fi
    271 
    272 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
    273     libffi_cv_hidden_visibility_attribute, [
    274 	echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
    275 	libffi_cv_hidden_visibility_attribute=no
    276 	if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
    277 	    if grep '\.hidden.*foo' conftest.s >/dev/null; then
    278 		libffi_cv_hidden_visibility_attribute=yes
    279 	    fi
    280 	fi
    281 	rm -f conftest.*
    282     ])
    283 if test $libffi_cv_hidden_visibility_attribute = yes; then
    284     AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
    285 	      [Define if __attribute__((visibility("hidden"))) is supported.])
    286 fi
    287 
    288 AH_BOTTOM([
    289 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
    290 #ifdef LIBFFI_ASM
    291 #define FFI_HIDDEN(name) .hidden name
    292 #else
    293 #define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
    294 #endif
    295 #else
    296 #ifdef LIBFFI_ASM
    297 #define FFI_HIDDEN(name)
    298 #else
    299 #define FFI_HIDDEN
    300 #endif
    301 #endif
    302 ])
    303 
    304 AC_SUBST(TARGET)
    305 AC_SUBST(TARGETDIR)
    306 
    307 AC_SUBST(SHELL)
    308 
    309 AC_ARG_ENABLE(debug,
    310 [  --enable-debug          debugging mode],
    311   if test "$enable_debug" = "yes"; then
    312     AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
    313   fi)
    314 
    315 AC_ARG_ENABLE(structs,
    316 [  --disable-structs       omit code for struct support],
    317   if test "$enable_structs" = "no"; then
    318     AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
    319   fi)
    320 
    321 AC_ARG_ENABLE(raw-api,
    322 [  --disable-raw-api       make the raw api unavailable],
    323   if test "$enable_raw_api" = "no"; then
    324     AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
    325   fi)
    326 
    327 AC_ARG_ENABLE(purify-safety,
    328 [  --enable-purify-safety  purify-safe mode],
    329   if test "$enable_purify_safety" = "yes"; then
    330     AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
    331   fi)
    332 
    333 if test -n "$with_cross_host" &&
    334    test x"$with_cross_host" != x"no"; then
    335   toolexecdir='$(exec_prefix)/$(target_alias)'
    336   toolexeclibdir='$(toolexecdir)/lib'
    337 else
    338   toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
    339   toolexeclibdir='$(libdir)'
    340 fi
    341 multi_os_directory=`$CC -print-multi-os-directory`
    342 case $multi_os_directory in
    343   .) ;; # Avoid trailing /.
    344   *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
    345 esac
    346 AC_SUBST(toolexecdir)
    347 AC_SUBST(toolexeclibdir)
    348 
    349 if test "${multilib}" = "yes"; then
    350   multilib_arg="--enable-multilib"
    351 else
    352   multilib_arg=
    353 fi
    354 
    355 AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
    356 AC_CONFIG_COMMANDS(src, [
    357 test -d src || mkdir src
    358 test -d src/$TARGETDIR || mkdir src/$TARGETDIR
    359 ], [TARGETDIR="$TARGETDIR"])
    360 
    361 AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
    362 
    363 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)
    364 
    365 AC_OUTPUT
    366