Edit
kc3-lang/libffi/configure.ac
Anthony Green
- configure.ac
-
dnl Process this with autoconf to create configure AC_PREREQ(2.68) AC_INIT([libffi], [3.4.2], [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