| 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$have_static_libgcc" = xyes; then |
| ac_lto_plugin_ldflags="-Wc,-static-libgcc" |
| fi |
| AC_SUBST(ac_lto_plugin_ldflags) |
| |
| GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) |
| AC_SUBST(CET_HOST_FLAGS) |
| |
| if test x"$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 <<EOF |
| { |
| global: *foo*; bar; local: *; |
| }; |
| EOF |
| AC_TRY_LINK([int foo;],[],[lto_plugin_use_symver=gnu],[lto_plugin_use_symver=no]) |
| if test x$lto_plugin_use_symver = xno; then |
| case "$target_os" in |
| solaris2*) |
| LDFLAGS="$save_LDFLAGS" |
| LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" |
| # Sun ld cannot handle wildcards and treats all entries as undefined. |
| cat > conftest.map <<EOF |
| { |
| global: foo; local: *; |
| }; |
| EOF |
| AC_TRY_LINK([int foo;],[],[lto_plugin_use_symver=sun],[lto_plugin_use_symver=no]) |
| ;; |
| esac |
| fi |
| LDFLAGS="$save_LDFLAGS" |
| fi |
| AC_MSG_RESULT($lto_plugin_use_symver) |
| AM_CONDITIONAL(LTO_PLUGIN_USE_SYMVER, [test "x$lto_plugin_use_symver" != xno]) |
| AM_CONDITIONAL(LTO_PLUGIN_USE_SYMVER_GNU, [test "x$lto_plugin_use_symver" = xgnu]) |
| AM_CONDITIONAL(LTO_PLUGIN_USE_SYMVER_SUN, [test "x$lto_plugin_use_symver" = xsun]) |
| |
| AM_PROG_LIBTOOL |
| ACX_LT_HOST_FLAGS |
| AC_SUBST(target_noncanonical) |
| AC_TYPE_INT64_T |
| AC_TYPE_UINT64_T |
| AC_HEADER_SYS_WAIT |
| AC_CONFIG_FILES(Makefile) |
| AC_CONFIG_HEADERS(config.h) |
| AC_OUTPUT |