AC_INIT([LTO plugin for ld], 0.1,,[lto-plugin]) AC_CANONICAL_SYSTEM GCC_TOPLEV_SUBDIRS AM_INIT_AUTOMAKE([foreign no-dist]) AM_MAINTAINER_MODE AC_ARG_WITH(libiberty, [AS_HELP_STRING([--with-libiberty=PATH], [specify the directory where to find libiberty [../libiberty]])], [], with_libiberty=../libiberty) AC_SUBST(with_libiberty) AC_USE_SYSTEM_EXTENSIONS AC_PROG_CC AC_SYS_LARGEFILE ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_lto_plugin_warn_cflags]) # Check whether -static-libgcc is supported. saved_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -static-libgcc" AC_MSG_CHECKING([for -static-libgcc]) AC_LINK_IFELSE([AC_LANG_SOURCE([ int main() {}])], [have_static_libgcc=yes], [have_static_libgcc=no]) AC_MSG_RESULT($have_static_libgcc); LDFLAGS="$saved_LDFLAGS" # Need -Wc to get it through libtool. if test "x$have_static_libgcc" = xyes; then ac_lto_plugin_ldflags="-Wc,-static-libgcc" fi # Enable --enable-host-bind-now AC_ARG_ENABLE(host-bind-now, [AS_HELP_STRING([--enable-host-bind-now], [link host code as BIND_NOW])]) AC_SUBST(enable_host_bind_now) if test x$enable_host_bind_now = xyes; then ac_lto_plugin_ldflags="$ac_lto_plugin_ldflags -Wl,-z,now" fi AC_SUBST(ac_lto_plugin_ldflags) GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) AC_SUBST(CET_HOST_FLAGS) if test x"$host_subdir" = x.; then gcc_build_dir=../gcc else gcc_build_dir=../../$host_subdir/gcc fi AC_SUBST(gcc_build_dir) # Used for constructing correct paths for offload compilers. accel_dir_suffix= real_target_noncanonical=${target_noncanonical} if test x"$enable_as_accelerator_for" != x; then accel_dir_suffix=/accel/${target_noncanonical} real_target_noncanonical=${enable_as_accelerator_for} fi AC_SUBST(accel_dir_suffix) AC_SUBST(real_target_noncanonical) # Determine what GCC version number to use in filesystem paths. GCC_BASE_VER AC_MSG_CHECKING([whether symbol versioning is supported]) lto_plugin_use_symver=no if test x$gcc_no_link = xyes; then # If we cannot link, we cannot build shared libraries, so do not use # symbol versioning. lto_plugin_use_symver=no else save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" cat > conftest.map < conftest.map <