| dnl Process this with autoconf to create configure |
| |
| AC_PREREQ(2.64) |
| |
| AC_INIT([libffi], [3.99999], [http://github.com/atgreen/libffi/issues]) |
| AC_CONFIG_HEADERS([fficonfig.h]) |
| |
| AM_ENABLE_MULTILIB(, ..) |
| |
| AC_CANONICAL_SYSTEM |
| target_alias=${target_alias-$host_alias} |
| |
| AM_INIT_AUTOMAKE([no-dist]) |
| |
| # See if makeinfo has been installed and is modern enough |
| # that we can use it. |
| ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], |
| [GNU texinfo.* \([0-9][0-9.]*\)], |
| [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) |
| AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") |
| |
| # We would like our source tree to be readonly. However when releases or |
| # pre-releases are generated, the flex/bison generated files as well as the |
| # various formats of manuals need to be included along with the rest of the |
| # sources. Therefore we have --enable-generated-files-in-srcdir to do |
| # just that. |
| AC_MSG_CHECKING(generated-files-in-srcdir) |
| AC_ARG_ENABLE(generated-files-in-srcdir, |
| AS_HELP_STRING([--enable-generated-files-in-srcdir], |
| [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex]), |
| [case "$enableval" in |
| yes) enable_generated_files_in_srcdir=yes ;; |
| no) enable_generated_files_in_srcdir=no ;; |
| *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; |
| esac], |
| [enable_generated_files_in_srcdir=no]) |
| AC_MSG_RESULT($enable_generated_files_in_srcdir) |
| AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes) |
| |
| # 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([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) |
| m4_define([_AC_ARG_VAR_PRECIOUS],[]) |
| save_CFLAGS=$CFLAGS |
| AC_PROG_CC |
| AC_PROG_CXX |
| CFLAGS=$save_CFLAGS |
| m4_undefine([_AC_ARG_VAR_PRECIOUS]) |
| m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
| |
| AC_SUBST(CFLAGS) |
| |
| AM_PROG_AS |
| AM_PROG_CC_C_O |
| AC_PROG_LIBTOOL |
| |
| # Test for 64-bit build. |
| AC_CHECK_SIZEOF([size_t]) |
| |
| AM_MAINTAINER_MODE |
| |
| AC_CHECK_HEADERS(sys/mman.h) |
| AC_CHECK_FUNCS([mmap mkostemp]) |
| AC_FUNC_MMAP_BLACKLIST |
| |
| dnl The -no-testsuite modules omit the test subdir. |
| AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite) |
| |
| TARGETDIR="unknown" |
| HAVE_LONG_DOUBLE_VARIANT=0 |
| |
| . ${srcdir}/configure.host |
| |
| if test -n "${UNSUPPORTED}"; then |
| AC_MSG_ERROR(["libffi has not been ported to $host."]) |
| fi |
| |
| AC_SUBST(AM_RUNTESTFLAGS) |
| AC_SUBST(AM_LTLDFLAGS) |
| |
| AC_HEADER_STDC |
| AC_CHECK_FUNCS(memcpy) |
| AC_FUNC_ALLOCA |
| |
| AC_CHECK_SIZEOF(double) |
| AC_CHECK_SIZEOF(long double) |
| |
| # Also AC_SUBST this variable for ffi.h. |
| if test -z "$HAVE_LONG_DOUBLE"; then |
| HAVE_LONG_DOUBLE=0 |
| if test $ac_cv_sizeof_long_double != 0; then |
| if test $HAVE_LONG_DOUBLE_VARIANT != 0; then |
| AC_DEFINE(HAVE_LONG_DOUBLE_VARIANT, 1, [Define if you support more than one size of the long double type]) |
| HAVE_LONG_DOUBLE=1 |
| else |
| if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then |
| HAVE_LONG_DOUBLE=1 |
| AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double]) |
| fi |
| fi |
| fi |
| fi |
| AC_SUBST(HAVE_LONG_DOUBLE) |
| AC_SUBST(HAVE_LONG_DOUBLE_VARIANT) |
| |
| AC_C_BIGENDIAN |
| |
| GCC_AS_CFI_PSEUDO_OP |
| |
| if test x$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 $CFLAGS -c conftest.s > /dev/null 2>&1; then |
| libffi_cv_as_x86_pcrel=yes |
| fi |
| ]) |
| if test "x$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 = xS390; then |
| AC_CACHE_CHECK([compiler uses zarch features], |
| libffi_cv_as_s390_zarch, [ |
| libffi_cv_as_s390_zarch=no |
| echo 'void foo(void) { bar(); bar(); }' > conftest.c |
| if $CC $CFLAGS -S conftest.c > /dev/null 2>&1; then |
| if grep -q brasl conftest.s; then |
| libffi_cv_as_s390_zarch=yes |
| fi |
| fi |
| ]) |
| if test "x$libffi_cv_as_s390_zarch" = xyes; then |
| AC_DEFINE(HAVE_AS_S390_ZARCH, 1, |
| [Define if the compiler uses zarch features.]) |
| fi |
| fi |
| |
| # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC. |
| AC_ARG_ENABLE(pax_emutramp, |
| [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC], |
| if test "$enable_pax_emutramp" = "yes"; then |
| AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1, |
| [Define this if you want to enable pax emulated trampolines]) |
| fi) |
| |
| FFI_EXEC_TRAMPOLINE_TABLE=0 |
| case "$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-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-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([toolchain supports unwind section type], |
| libffi_cv_as_x86_64_unwind_section_type, [ |
| cat > conftest1.s << EOF |
| .text |
| .globl foo |
| foo: |
| jmp bar |
| .section .eh_frame,"a",@unwind |
| bar: |
| EOF |
| |
| cat > conftest2.c << EOF |
| extern void foo(); |
| int main(){foo();} |
| EOF |
| |
| libffi_cv_as_x86_64_unwind_section_type=no |
| # we ensure that we can compile _and_ link an assembly file containing an @unwind section |
| # since the compiler can support it and not the linker (ie old binutils) |
| if $CC -Wa,--fatal-warnings $CFLAGS -c conftest1.s > /dev/null 2>&1 && \ |
| $CC conftest2.c conftest1.o > /dev/null 2>&1 ; then |
| libffi_cv_as_x86_64_unwind_section_type=yes |
| fi |
| ]) |
| if test "x$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 $CFLAGS -c -fpic -fexceptions -o conftest.o conftest.c > /dev/null 2>&1; then |
| objdump -h conftest.o > conftest.dump 2>&1 |
| libffi_eh_frame_line=`grep -n eh_frame conftest.dump | cut -d: -f 1` |
| if test "x$libffi_eh_frame_line" != "x"; then |
| libffi_test_line=`expr $libffi_eh_frame_line + 1`p |
| sed -n $libffi_test_line conftest.dump > conftest.line |
| if grep READONLY conftest.line > /dev/null; then |
| libffi_cv_ro_eh_frame=yes |
| fi |
| fi |
| fi |
| rm -f conftest.* |
| ]) |
| if test "x$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) |
| |
| changequote(<,>) |
| TARGET_OBJ= |
| for i in $SOURCES; do |
| TARGET_OBJ="${TARGET_OBJ} src/${TARGETDIR}/"`echo $i | sed 's/[cS]$/lo/'` |
| done |
| changequote([,]) |
| AC_SUBST(TARGET_OBJ) |
| |
| 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 "$enable_structs" = "no"; then |
| AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this if you do not want support for aggregate types.]) |
| fi) |
| AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes") |
| |
| AC_ARG_ENABLE(raw-api, |
| [ --disable-raw-api make the raw api unavailable], |
| if test "$enable_raw_api" = "no"; then |
| AC_DEFINE(FFI_NO_RAW_API, 1, [Define this if you do not want support for the raw API.]) |
| fi) |
| |
| AC_ARG_ENABLE(purify-safety, |
| [ --enable-purify-safety purify-safe mode], |
| if test "$enable_purify_safety" = "yes"; then |
| AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.]) |
| fi) |
| |
| 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/$multi_os_directory ;; |
| esac |
| AC_SUBST(toolexecdir) |
| AC_SUBST(toolexeclibdir) |
| |
| if test "${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 |