dnl Process this with autoconf to create configure

AC_PREREQ(2.63)

AC_INIT(, [3.0.10], [sourceware.org/libffi.html]) AC_CONFIG_HEADERS()

AC_CANONICAL_SYSTEM target_alias=${target_alias-$host_alias}

. ${srcdir}/configure.host

AX_ENABLE_BUILDDIR

AM_INIT_AUTOMAKE

# The same as in boehm-gc and libstdc++. Have to borrow it from there. # We must force CC to /not/ be precious variables; otherwise # the wrong, non-multilib-adjusted value will be used in multilibs. # As a side effect, we have to subst CFLAGS ourselves. # Also save and restore CFLAGS, since AC_PROG_CC will come up with # defaults of its own if none are provided.

m4_rename(,[real_PRECIOUS]) m4_define(,[]) save_CFLAGS=$CFLAGS AC_PROG_CC CFLAGS=$save_CFLAGS m4_undefine() m4_rename(,[_AC_ARG_VAR_PRECIOUS])

AC_SUBST(CFLAGS)

AM_PROG_AS AM_PROG_CC_C_O AC_PROG_LIBTOOL AC_CONFIG_MACRO_DIR()

AX_CC_MAXOPT AX_CFLAGS_WARN_ALL if test “x$GCC” = “xyes”; then

CFLAGS="$CFLAGS -fexceptions"

fi

AM_MAINTAINER_MODE

AC_CHECK_HEADERS(sys/mman.h) AC_CHECK_FUNCS(mmap) AC_FUNC_MMAP_BLACKLIST

dnl The -no-testsuite modules omit the test subdir. AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)

TARGETDIR=“unknown” case “$host” in

alpha*-*-*)
      TARGET=ALPHA; TARGETDIR=alpha;
      # Support 128-bit long double, changeable via command-line switch.
      HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
      ;;

arm*-*-*)
      TARGET=ARM; TARGETDIR=arm
      ;;

amd64-*-freebsd* | amd64-*-openbsd*)
      TARGET=X86_64; TARGETDIR=x86
      ;;

amd64-*-freebsd*)
      TARGET=X86_64; TARGETDIR=x86
      ;;

avr32*-*-*)
      TARGET=AVR32; TARGETDIR=avr32
      ;;

cris-*-*)
      TARGET=LIBFFI_CRIS; TARGETDIR=cris
      ;;

frv-*-*)
      TARGET=FRV; TARGETDIR=frv
      ;;

hppa*-*-linux* | parisc*-*-linux* | hppa*-*-openbsd*)
      TARGET=PA_LINUX; TARGETDIR=pa
      ;;
hppa*64-*-hpux*)
      TARGET=PA64_HPUX; TARGETDIR=pa
      ;;
hppa*-*-hpux*)
      TARGET=PA_HPUX; TARGETDIR=pa
      ;;

i?86-*-freebsd* | i?86-*-openbsd*)
      TARGET=X86_FREEBSD; TARGETDIR=x86
      ;;
i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2* | i?86-*-interix*)
      TARGET=X86_WIN32; TARGETDIR=x86
      # All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
      # We must also check with_cross_host to decide if this is a native
      # or cross-build and select where to install dlls appropriately.
      if test -n "$with_cross_host" &&
         test x"$with_cross_host" != x"no"; then
        AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
      else
        AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
      fi
      ;;
i?86-*-darwin*)
      TARGET=X86_DARWIN; TARGETDIR=x86
      ;;
i?86-*-solaris2.1[[0-9]]*)
      TARGET=X86_64; TARGETDIR=x86
      ;;
i?86-*-*)
      TARGET=X86; TARGETDIR=x86
      ;;

ia64*-*-*)
      TARGET=IA64; TARGETDIR=ia64
      ;;

m32r*-*-*)
      TARGET=M32R; TARGETDIR=m32r
      ;;

m68k-*-*)
      TARGET=M68K; TARGETDIR=m68k
      ;;

mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
      TARGET=MIPS; TARGETDIR=mips
      ;;
mips*-*-linux* | mips*-*-openbsd*)
      # Support 128-bit long double for NewABI.
      HAVE_LONG_DOUBLE='defined(__mips64)'
      TARGET=MIPS; TARGETDIR=mips
      ;;

powerpc*-*-linux* | powerpc-*-sysv*)
      TARGET=POWERPC; TARGETDIR=powerpc
      ;;
powerpc-*-beos*)
      TARGET=POWERPC; TARGETDIR=powerpc
      ;;
powerpc-*-darwin* | powerpc64-*-darwin*)
      TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
      ;;
powerpc-*-aix* | rs6000-*-aix*)
      TARGET=POWERPC_AIX; TARGETDIR=powerpc
      ;;
powerpc-*-freebsd* | powerpc-*-openbsd*)
      TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
      ;;
powerpc64-*-freebsd*)
      TARGET=POWERPC; TARGETDIR=powerpc
      ;;
powerpc*-*-rtems*)
      TARGET=POWERPC; TARGETDIR=powerpc
      ;;

s390-*-* | s390x-*-*)
      TARGET=S390; TARGETDIR=s390
      ;;

sh-*-* | sh[[34]]*-*-*)
      TARGET=SH; TARGETDIR=sh
      ;;
sh64-*-* | sh5*-*-*)
      TARGET=SH64; TARGETDIR=sh64
      ;;

sparc*-*-*)
      TARGET=SPARC; TARGETDIR=sparc
      ;;

x86_64-*-darwin*)
      TARGET=X86_DARWIN; TARGETDIR=x86
      ;;

x86_64-*-cygwin* | x86_64-*-mingw*)
      TARGET=X86_WIN64; TARGETDIR=x86
      ;;

x86_64-*-*)
      TARGET=X86_64; TARGETDIR=x86
      ;;

esac

AC_SUBST(AM_RUNTESTFLAGS) AC_SUBST(AM_LTLDFLAGS)

if test $TARGETDIR = unknown; then

AC_MSG_ERROR(["libffi has not been ported to $host."])

fi

AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS) AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC) AM_CONDITIONAL(X86, test x$TARGET = xX86) AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD) AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32) AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64) AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN) AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA) AM_CONDITIONAL(IA64, test x$TARGET = xIA64) AM_CONDITIONAL(M32R, test x$TARGET = xM32R) AM_CONDITIONAL(M68K, test x$TARGET = xM68K) AM_CONDITIONAL(MOXIE, test x$TARGET = xMOXIE) AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC) AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX) AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN) AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD) AM_CONDITIONAL(ARM, test x$TARGET = xARM) AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32) AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS) AM_CONDITIONAL(FRV, test x$TARGET = xFRV) AM_CONDITIONAL(S390, test x$TARGET = xS390) AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64) AM_CONDITIONAL(SH, test x$TARGET = xSH) AM_CONDITIONAL(SH64, test x$TARGET = xSH64) AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX) AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX) AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)

AC_HEADER_STDC AC_CHECK_FUNCS(memcpy) AC_FUNC_ALLOCA

AC_CHECK_SIZEOF(double) AC_CHECK_SIZEOF(long double)

# Also AC_SUBST this variable for ffi.h. if test -z “$HAVE_LONG_DOUBLE”; then

HAVE_LONG_DOUBLE=0
if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
  if test $ac_cv_sizeof_long_double != 0; then
    HAVE_LONG_DOUBLE=1
    AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
  fi
fi

fi AC_SUBST(HAVE_LONG_DOUBLE)

AC_C_BIGENDIAN

AC_CACHE_CHECK([assembler .cfi pseudo-op support],

libffi_cv_as_cfi_pseudo_op, [
libffi_cv_as_cfi_pseudo_op=unknown
AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
               [libffi_cv_as_cfi_pseudo_op=yes],
               [libffi_cv_as_cfi_pseudo_op=no])

]) if test “x$libffi_cv_as_cfi_pseudo_op” = xyes; then

AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
          [Define if your assembler supports .cfi_* directives.])

fi

if test x$TARGET = xSPARC; then

AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
    libffi_cv_as_sparc_ua_pcrel, [
    save_CFLAGS="$CFLAGS"
    save_LDFLAGS="$LDFLAGS"
    CFLAGS="$CFLAGS -fpic"
    LDFLAGS="$LDFLAGS -shared"
    AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
                [libffi_cv_as_sparc_ua_pcrel=yes],
                [libffi_cv_as_sparc_ua_pcrel=no])
    CFLAGS="$save_CFLAGS"
    LDFLAGS="$save_LDFLAGS"])
if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
    AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
              [Define if your assembler and linker support unaligned PC relative relocs.])
fi

AC_CACHE_CHECK([assembler .register pseudo-op support],
   libffi_cv_as_register_pseudo_op, [
   libffi_cv_as_register_pseudo_op=unknown
   # Check if we have .register
   AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
                   [libffi_cv_as_register_pseudo_op=yes],
                   [libffi_cv_as_register_pseudo_op=no])
])
if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
   AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
           [Define if your assembler supports .register.])
fi

fi

if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then

AC_CACHE_CHECK([assembler supports pc related relocs],
    libffi_cv_as_x86_pcrel, [
    libffi_cv_as_x86_pcrel=no
    echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
    if $CC $CFLAGS -c conftest.s > /dev/null; then
       libffi_cv_as_x86_pcrel=yes
    fi
    ])
if test "x$libffi_cv_as_x86_pcrel" = xyes; then
    AC_DEFINE(HAVE_AS_X86_PCREL, 1,
              [Define if your assembler supports PC relative relocs.])
fi

AC_CACHE_CHECK([assembler .ascii pseudo-op support],
   libffi_cv_as_ascii_pseudo_op, [
   libffi_cv_as_ascii_pseudo_op=unknown
   # Check if we have .ascii
   AC_TRY_COMPILE([asm (".ascii \\"string\\"");],,
                   [libffi_cv_as_ascii_pseudo_op=yes],
                   [libffi_cv_as_ascii_pseudo_op=no])
])
if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
   AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
           [Define if your assembler supports .ascii.])
fi

AC_CACHE_CHECK([assembler .string pseudo-op support],
   libffi_cv_as_string_pseudo_op, [
   libffi_cv_as_string_pseudo_op=unknown
   # Check if we have .string
   AC_TRY_COMPILE([asm (".string \\"string\\"");],,
                   [libffi_cv_as_string_pseudo_op=yes],
                   [libffi_cv_as_string_pseudo_op=no])
])
if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
   AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
           [Define if your assembler supports .string.])
fi

fi

if test x$TARGET = xX86_WIN64; then

LT_SYS_SYMBOL_USCORE
if test "x$sys_symbol_underscore" = xyes; then
    AC_DEFINE(SYMBOL_UNDERSCORE, 1, [Define if symbols are underscored.])
fi

fi

FFI_EXEC_TRAMPOLINE_TABLE=0 case “$target” in

*arm*-apple-darwin*)
  FFI_EXEC_TRAMPOLINE_TABLE=1
  AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1,
            [Cannot use PROT_EXEC on this target, so, we revert to
              alternative means])
;;
*-apple-darwin10* | *-*-freebsd* | *-*-openbsd* | *-pc-solaris*)
  AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
            [Cannot use malloc on this target, so, we revert to
              alternative means])
;;

esac AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1) AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)

if test x$TARGET = xX86_64; then

AC_CACHE_CHECK([assembler supports unwind section type],
    libffi_cv_as_x86_64_unwind_section_type, [
    libffi_cv_as_x86_64_unwind_section_type=yes
    echo '.section .eh_frame,"a",@unwind' > conftest.s
    if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
        libffi_cv_as_x86_64_unwind_section_type=no
    fi
    ])
if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
    AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
              [Define if your assembler supports unwind section type.])
fi

fi

if test “x$GCC” = “xyes”; then

AC_CACHE_CHECK([whether .eh_frame section should be read-only],
    libffi_cv_ro_eh_frame, [
      libffi_cv_ro_eh_frame=no
      echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
      if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
          if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
              libffi_cv_ro_eh_frame=yes
          elif grep '.section.*eh_frame.*#alloc' conftest.c \
               | grep -v '#write' > /dev/null; then
              libffi_cv_ro_eh_frame=yes
          fi
      fi
      rm -f conftest.*
    ])
if test "x$libffi_cv_ro_eh_frame" = xyes; then
    AC_DEFINE(HAVE_RO_EH_FRAME, 1,
            [Define if .eh_frame sections should be read-only.])
    AC_DEFINE(EH_FRAME_FLAGS, "a",
            [Define to the flags needed for the .section .eh_frame directive.  ])
else
    AC_DEFINE(EH_FRAME_FLAGS, "aw",
            [Define to the flags needed for the .section .eh_frame directive.  ])
fi

AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
    libffi_cv_hidden_visibility_attribute, [
      echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1  ; }' > conftest.c
      libffi_cv_hidden_visibility_attribute=no
      if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
          if grep '\.hidden.*foo' conftest.s >/dev/null; then
              libffi_cv_hidden_visibility_attribute=yes
          fi
      fi
      rm -f conftest.*
    ])
if test $libffi_cv_hidden_visibility_attribute = yes; then
    AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
            [Define if __attribute__((visibility("hidden"))) is supported.])
fi

fi

AH_BOTTOM([ ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE ifdef LIBFFI_ASM define FFI_HIDDEN(name) .hidden name else define FFI_HIDDEN __attribute__ ((visibility (“hidden”))) endif else ifdef LIBFFI_ASM define FFI_HIDDEN(name) else define FFI_HIDDEN endif endif ])

AC_SUBST(TARGET) AC_SUBST(TARGETDIR)

AC_SUBST(SHELL)

AC_ARG_ENABLE(debug, [ –enable-debug debugging mode],

if test "$enable_debug" = "yes"; then
  AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
fi)

AM_CONDITIONAL(FFI_DEBUG, test “$enable_debug” = “yes”)

AC_ARG_ENABLE(structs, [ –disable-structs omit code for struct support],

if test "$enable_structs" = "no"; then
  AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
fi)

AC_ARG_ENABLE(raw-api, [ –disable-raw-api make the raw api unavailable],

if test "$enable_raw_api" = "no"; then
  AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
fi)

AC_ARG_ENABLE(purify-safety, [ –enable-purify-safety purify-safe mode],

if test "$enable_purify_safety" = "yes"; then
  AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
fi)

# These variables are only ever used when we cross-build to X86_WIN32. # And we only support this with GCC, so… if test x“$GCC” != x“no”; then

if test -n "$with_cross_host" &&
   test x"$with_cross_host" != x"no"; then
  toolexecdir='$(exec_prefix)/$(target_alias)'
  toolexeclibdir='$(toolexecdir)/lib'
else
  toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
  toolexeclibdir='$(libdir)'
fi
multi_os_directory=`$CC -print-multi-os-directory`
case $multi_os_directory in
  .) ;; # Avoid trailing /.
  *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
esac
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)

fi

if test “${multilib}” = “yes”; then

multilib_arg="--enable-multilib"

else

multilib_arg=

fi

AC_CONFIG_COMMANDS(include, [test -d include || mkdir include]) AC_CONFIG_COMMANDS(src, [ test -d src || mkdir src test -d src/$TARGETDIR || mkdir src/$TARGETDIR ], [TARGETDIR=“$TARGETDIR”])

AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)

AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)

AC_OUTPUT