For the reference, LTO doesn't work with systemd 218 on mips: http://lists.freedesktop.org/archives/systemd-devel/2014-December/026326.html
On Wed, Feb 18, 2015 at 7:45 PM, Cristian Rodríguez <crrodrig...@opensuse.org> wrote: > LTO may be unreliable, does not work properly in several archs > It may crash or produce wrong code. > > Compiler developers also said we should not provide production > RPM packages with LTO enabled. > > GOLD also does not work everywhere. > --- > configure.ac | 15 ++++++++++----- > 1 file changed, 10 insertions(+), 5 deletions(-) > > diff --git a/configure.ac b/configure.ac > index 9a2235b..38194ca 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -207,10 +207,15 @@ AS_CASE([$CC], [*clang*], > -Wno-gnu-variable-sized-type-not-at-end \ > ])]) > > -AS_CASE([$CFLAGS], [*-O[[12345\ ]]*], > - [CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\ > - -flto -ffat-lto-objects])], > - [AC_MSG_RESULT([skipping -flto, optimization not enabled])]) > +AC_ARG_ENABLE([lto], AS_HELP_STRING([--disable-lto], [Disable Link time > optimization])) > +AS_IF([test "x$enable_lto" != "xno"], [ > +AS_CASE([$CFLAGS], [*-O[[12345\ ]]*], [ > + CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [-flto > -ffat-lto-objects]) > + CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS],[-Wl,-fuse-ld=gold]) > + ], > +[AC_MSG_RESULT([skipping -flto, optimization not enabled])]) > +]) > + > AC_SUBST([OUR_CFLAGS], "$with_cflags $sanitizer_cflags") > > AS_CASE([$CFLAGS], [*-O[[12345\ ]]*], > @@ -226,7 +231,7 @@ CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [\ > -Wl,-z,relro \ > -Wl,-z,now \ > -pie \ > - -Wl,-fuse-ld=gold]) > + ]) > AC_SUBST([OUR_LDFLAGS], "$with_ldflags $sanitizer_ldflags") > > AC_CHECK_SIZEOF(pid_t) > -- > 2.3.0 > > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/systemd-devel _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel