diff options
Diffstat (limited to 'libffi/configure.ac')
| -rw-r--r-- | libffi/configure.ac | 199 |
1 files changed, 122 insertions, 77 deletions
diff --git a/libffi/configure.ac b/libffi/configure.ac index 0bf4af4..70f6d2c 100644 --- a/libffi/configure.ac +++ b/libffi/configure.ac @@ -1,40 +1,22 @@ dnl Process this with autoconf to create configure +AC_PREREQ(2.68) -AC_INIT([libffi], [3.99999], [http://github.com/atgreen/libffi/issues]) +AC_INIT([libffi], [3.4.2], [http://github.com/libffi/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) +case "${host}" in + frv*-elf) + LDFLAGS=`echo $LDFLAGS | sed "s/\-B[^ ]*libgloss\/frv\///"`\ -B`pwd`/../libgloss/frv/ + ;; +esac + +AX_ENABLE_BUILDDIR + +AM_INIT_AUTOMAKE # The same as in boehm-gc and libstdc++. Have to borrow it from there. # We must force CC to /not/ be precious variables; otherwise @@ -57,19 +39,38 @@ AC_SUBST(CFLAGS) AM_PROG_AS AM_PROG_CC_C_O AC_PROG_LIBTOOL +AC_CONFIG_MACRO_DIR([m4]) + +AC_CHECK_TOOL(READELF, readelf) # Test for 64-bit build. AC_CHECK_SIZEOF([size_t]) +AX_COMPILER_VENDOR +AX_CC_MAXOPT +# The AX_CFLAGS_WARN_ALL macro doesn't currently work for sunpro +# compiler. +if test "$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 "$ax_cv_c_compiler_vendor" EOF AM_MAINTAINER_MODE +AC_CHECK_HEADERS(sys/memfd.h) +AC_CHECK_FUNCS([memfd_create]) + AC_CHECK_HEADERS(sys/mman.h) -AC_CHECK_FUNCS([mmap mkostemp]) +AC_CHECK_FUNCS([mmap mkostemp mkstemp]) AC_FUNC_MMAP_BLACKLIST dnl The -no-testsuite modules omit the test subdir. @@ -181,6 +182,28 @@ case "$TARGET" in ;; 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$libffi_cv_as_ptrauth" = xyes; then + AC_DEFINE(HAVE_PTRAUTH, 1, + [Define if your compiler supports pointer authentication.]) +fi + # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC. AC_ARG_ENABLE(pax_emutramp, [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC], @@ -189,15 +212,20 @@ AC_ARG_ENABLE(pax_emutramp, [Define this if you want to enable pax emulated trampolines]) fi) +LT_SYS_SYMBOL_USCORE +if test "x$sys_symbol_underscore" = xyes; then + AC_DEFINE(SYMBOL_UNDERSCORE, 1, [Define if symbols are underscored.]) +fi + FFI_EXEC_TRAMPOLINE_TABLE=0 case "$target" in - *arm*-apple-darwin* | aarch64-apple-darwin*) + *arm*-apple-* | aarch64-apple-*) FFI_EXEC_TRAMPOLINE_TABLE=1 AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1, [Cannot use PROT_EXEC on this target, so, we revert to alternative means]) ;; - *-apple-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris*) + *-apple-* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris* | *-linux-android*) AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1, [Cannot use malloc on this target, so, we revert to alternative means]) @@ -238,19 +266,15 @@ EOF fi if test "x$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=no + libffi_cv_ro_eh_frame=yes 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 + if $CC $CFLAGS -c -fpic -fexceptions $libffi_cv_no_lto -o conftest.o conftest.c > /dev/null 2>&1; then + if $READELF -WS conftest.o | grep -q -n 'eh_frame .* WA'; then + libffi_cv_ro_eh_frame=no fi fi rm -f conftest.* @@ -270,7 +294,7 @@ if test "x$GCC" = "xyes"; then echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c libffi_cv_hidden_visibility_attribute=no if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then - if grep '\.hidden.*foo' conftest.s >/dev/null; then + if egrep '(\.hidden|\.private_extern).*foo' conftest.s >/dev/null; then libffi_cv_hidden_visibility_attribute=yes fi fi @@ -282,10 +306,21 @@ if test "x$GCC" = "xyes"; then 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$enable_docs = xyes]) + AH_BOTTOM([ #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE #ifdef LIBFFI_ASM +#ifdef __APPLE__ +#define FFI_HIDDEN(name) .private_extern name +#else #define FFI_HIDDEN(name) .hidden name +#endif #else #define FFI_HIDDEN __attribute__ ((visibility ("hidden"))) #endif @@ -331,48 +366,56 @@ AC_ARG_ENABLE(raw-api, AC_DEFINE(FFI_NO_RAW_API, 1, [Define this if you do not want support for the raw API.]) fi) +AC_ARG_ENABLE(exec-static-tramp, +[ --disable-exec-static-tramp disable use of static exec trampolines (enabled by default)]) + +if test "$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) -GCC_WITH_TOOLEXECLIBDIR - -if test -n "$with_cross_host" && - test x"$with_cross_host" != x"no"; then - toolexecdir='$(exec_prefix)/$(target_alias)' - case ${with_toolexeclibdir} in - no) - toolexeclibdir='$(toolexecdir)/lib' - ;; - *) - toolexeclibdir=${with_toolexeclibdir} - ;; - esac +AC_ARG_ENABLE(multi-os-directory, +[ --disable-multi-os-directory + disable use of gcc --print-multi-os-directory to change the library installation directory]) + +# These variables are only ever used when we cross-build to X86_WIN32. +# And we only support this with GCC, so... +if test "x$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/$multi_os_directory ;; + esac + fi + AC_SUBST(toolexecdir) else - toolexecdir='$(libdir)/gcc-lib/$(target_alias)' - toolexeclibdir='$(libdir)' + 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 - # Check linker support. -LIBAT_ENABLE_SYMVERS - -# Determine what GCC version number to use in filesystem paths. -GCC_BASE_VER +LIBFFI_ENABLE_SYMVERS AC_CONFIG_COMMANDS(include, [test -d include || mkdir include]) AC_CONFIG_COMMANDS(src, [ @@ -380,8 +423,10 @@ 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_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 |