diff --git a/adolc.spec b/adolc.spec
index e54c4b3..237b374 100644
--- a/adolc.spec
+++ b/adolc.spec
@@ -110,7 +110,7 @@ popd
 
 %build
 pushd ThirdParty/ColPack
-make %{_smp_mflags}
+make %{_smp_mflags} EXTRA_FLAGS="$RPM_OPT_FLAGS" CXXFLAGS+="$RPM_OPT_FLAGS"
 popd
 autoreconf -v --install --force
 %configure --prefix=/usr