Merge pull request #6080 from fwyzard/disable_LTO_for_biglibs

disable LTO for biglibs with gcc 4.9.x
cms-sw · Oct 29, 2014 · f8f8298 · f8f8298
2 parents 287772a + 10da126
commit f8f8298
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/BigProducts/Simulation/BuildFile.xml b/BigProducts/Simulation/BuildFile.xml
@@ -19,7 +19,10 @@
 <use name="SimDataFormats/ValidationFormats"/>
 <use name="geant4static"/>
 <flags DROP_DEP="geant4core"/>
-# Hack needed to avoid undefined variable in CLHEP.
 <architecture name="slc6_amd64_gcc49">
+  # hack needed to avoid undefined variable in CLHEP.
   <flags REM_CXXFLAGS="-Werror=unused-variable"/>
+  # disable LTO in BigLibs, as it seems to clash with debugging symbols with gcc 4.9.x
+  <flags REM_BIGOBJ_CXXFLAGS="-flto"/>
+  <flags BIGOBJ_CXXFLAGS="-fno-lto"/>
 </architecture>