| dnl Process this with autoconf to create configure |
| |
| AC_PREREQ(2.68) |
| |
| AC_INIT([libffi], [3.4.0], [http://github.com/libffi/libffi/issues]) |
| AC_CONFIG_HEADERS([fficonfig.h]) |
| |
| AC_CANONICAL_SYSTEM |
| target_alias=${target_alias-$host_alias} |
| |
| case "${host}" in |
| frv*-elf) |
| LDFLAGS=`echo $LDFLAGS | sed "s/\-B[^ ]*libgloss\/frv\///"`\ -B`pwd`/../libgloss/frv/ |
| ;; |
| esac |
| |
| AX_ENABLE_BUILDDIR |
| |
| AM_INIT_AUTOMAKE |
| |
| # The same as in boehm-gc and libstdc++. Have to borrow it from there. |
| # We must force CC to /not/ be precious variables; otherwise |
| # the wrong, non-multilib-adjusted value will be used in multilibs. |
| # As a side effect, we have to subst CFLAGS ourselves. |
| # Also save and restore CFLAGS, since AC_PROG_CC will come up with |
| # defaults of its own if none are provided. |
| |
| m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) |
| m4_define([_AC_ARG_VAR_PRECIOUS],[]) |
| save_CFLAGS=$CFLAGS |
| AC_PROG_CC |
| AC_PROG_CXX |
| CFLAGS=$save_CFLAGS |
| m4_undefine([_AC_ARG_VAR_PRECIOUS]) |
| m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
| |
| AC_SUBST(CFLAGS) |
| |
| AM_PROG_AS |
| AM_PROG_CC_C_O |
| AC_PROG_LIBTOOL |
| AC_CONFIG_MACRO_DIR([m4]) |
| |
| AC_CHECK_TOOL(READELF, readelf) |
| |
| # Test for 64-bit build. |
| AC_CHECK_SIZEOF([size_t]) |
| |
| AX_COMPILER_VENDOR |
| AX_CC_MAXOPT |
| # The AX_CFLAGS_WARN_ALL macro doesn't currently work for sunpro |
| # compiler. |
| if test "$ax_cv_c_compiler_vendor" != "sun"; then |
| AX_CFLAGS_WARN_ALL |
| fi |
| |
| if test "x$GCC" = "xyes"; then |
| CFLAGS="$CFLAGS -fexceptions" |
| fi |
| |
| cat > local.exp <<EOF |
| set CC_FOR_TARGET "$CC" |
| set CXX_FOR_TARGET "$CXX" |
| set compiler_vendor "$ax_cv_c_compiler_vendor" |
| EOF |
| |
| AM_MAINTAINER_MODE |
| |
| AC_CHECK_HEADERS(sys/memfd.h) |
| AC_CHECK_FUNCS([memfd_create]) |
| |
| AC_CHECK_HEADERS(sys/mman.h) |
| AC_CHECK_FUNCS([mmap mkostemp mkstemp]) |
| 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 != $ac_cv_sizeof_long_double; then |
| HAVE_LONG_DOUBLE=1 |
| AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double]) |
| fi |
| fi |
| fi |
| fi |
| AC_SUBST(HAVE_LONG_DOUBLE) |
| AC_SUBST(HAVE_LONG_DOUBLE_VARIANT) |
| |
| AC_C_BIGENDIAN |
| |
| GCC_AS_CFI_PSEUDO_OP |
| |
| case "$TARGET" in |
| SPARC) |
| 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 |
| ;; |
| |
| X86*) |
| 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 |
| ;; |
| |
| S390) |
| 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 |
| ;; |
| esac |
| |
| AC_CACHE_CHECK([whether compiler supports pointer authentication], |
| libffi_cv_as_ptrauth, [ |
| libffi_cv_as_ptrauth=unknown |
| AC_TRY_COMPILE(,[ |
| #ifdef __clang__ |
| # if __has_feature(ptrauth_calls) |
| # define HAVE_PTRAUTH 1 |
| # endif |
| #endif |
| |
| #ifndef HAVE_PTRAUTH |
| # error Pointer authentication not supported |
| #endif |
| ], |
| [libffi_cv_as_ptrauth=yes], |
| [libffi_cv_as_ptrauth=no]) |
| ]) |
| if test "x$libffi_cv_as_ptrauth" = xyes; then |
| AC_DEFINE(HAVE_PTRAUTH, 1, |
| [Define if your compiler supports pointer authentication.]) |
| fi |
| |
| # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC. |
| AC_ARG_ENABLE(pax_emutramp, |
| [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC], |
| if test "$enable_pax_emutramp" = "yes"; then |
| AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1, |
| [Define this if you want to enable pax emulated trampolines]) |
| fi) |
| |
| LT_SYS_SYMBOL_USCORE |
| if test "x$sys_symbol_underscore" = xyes; then |
| AC_DEFINE(SYMBOL_UNDERSCORE, 1, [Define if symbols are underscored.]) |
| fi |
| |
| FFI_EXEC_TRAMPOLINE_TABLE=0 |
| case "$target" in |
| *arm*-apple-* | aarch64-apple-*) |
| 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-* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris* | *-linux-android*) |
| 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 |
| AX_CHECK_COMPILE_FLAG(-fno-lto, libffi_cv_no_lto=-fno-lto) |
| |
| AC_CACHE_CHECK([whether .eh_frame section should be read-only], |
| libffi_cv_ro_eh_frame, [ |
| libffi_cv_ro_eh_frame=yes |
| echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c |
| if $CC $CFLAGS -c -fpic -fexceptions $libffi_cv_no_lto -o conftest.o conftest.c > /dev/null 2>&1; then |
| if $READELF -WS conftest.o | grep -q -n 'eh_frame .* WA'; then |
| libffi_cv_ro_eh_frame=no |
| fi |
| fi |
| rm -f conftest.* |
| ]) |
| if test "x$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 egrep '(\.hidden|\.private_extern).*foo' conftest.s >/dev/null; then |
| libffi_cv_hidden_visibility_attribute=yes |
| fi |
| fi |
| rm -f conftest.* |
| ]) |
| if test $libffi_cv_hidden_visibility_attribute = yes; then |
| AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1, |
| [Define if __attribute__((visibility("hidden"))) is supported.]) |
| fi |
| fi |
| |
| AC_ARG_ENABLE(docs, |
| AC_HELP_STRING([--disable-docs], |
| [Disable building of docs (default: no)]), |
| [enable_docs=no], |
| [enable_docs=yes]) |
| AM_CONDITIONAL(BUILD_DOCS, [test x$enable_docs = xyes]) |
| |
| AH_BOTTOM([ |
| #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE |
| #ifdef LIBFFI_ASM |
| #ifdef __APPLE__ |
| #define FFI_HIDDEN(name) .private_extern name |
| #else |
| #define FFI_HIDDEN(name) .hidden name |
| #endif |
| #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 "$enable_raw_api" = "no"; then |
| AC_DEFINE(FFI_NO_RAW_API, 1, [Define this if you do not want support for the raw API.]) |
| fi) |
| |
| AC_ARG_ENABLE(exec-static-tramp, |
| [ --disable-exec-static-tramp disable use of static exec trampolines (enabled by default)]) |
| |
| if test "$enable_exec_static_tramp" != no; then |
| case "$target" in |
| *-cygwin*) |
| ;; |
| *arm*-*-linux-* | aarch64*-*-linux-* | i*86-*-linux-* | x86_64-*-linux-*) |
| AC_DEFINE(FFI_EXEC_STATIC_TRAMP, 1, |
| [Define this if you want statically defined trampolines]) |
| ;; |
| esac |
| fi |
| |
| AC_ARG_ENABLE(purify-safety, |
| [ --enable-purify-safety purify-safe mode], |
| if test "$enable_purify_safety" = "yes"; then |
| AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.]) |
| fi) |
| |
| AC_ARG_ENABLE(multi-os-directory, |
| [ --disable-multi-os-directory |
| disable use of gcc --print-multi-os-directory to change the library installation directory]) |
| |
| # These variables are only ever used when we cross-build to X86_WIN32. |
| # And we only support this with GCC, so... |
| if test "x$GCC" = "xyes"; then |
| if test -n "$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='${libdir}' |
| fi |
| if test x"$enable_multi_os_directory" != x"no"; then |
| multi_os_directory=`$CC $CFLAGS -print-multi-os-directory` |
| case $multi_os_directory in |
| .) ;; # Avoid trailing /. |
| ../*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
| esac |
| fi |
| AC_SUBST(toolexecdir) |
| else |
| toolexeclibdir='${libdir}' |
| fi |
| AC_SUBST(toolexeclibdir) |
| |
| # Check linker support. |
| LIBFFI_ENABLE_SYMVERS |
| |
| 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_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile doc/Makefile libffi.pc) |
| |
| AC_OUTPUT |
| |
| # Copy this file instead of using AC_CONFIG_LINK in order to support |
| # compiling with MSVC, which won't understand cygwin style symlinks. |
| cp ${srcdir}/src/$TARGETDIR/ffitarget.h include/ffitarget.h |