--- boost_1_73_0/tools/build/src/engine/build.sh~	2020-04-25 17:09:03.159419899 +0100
+++ boost_1_73_0/tools/build/src/engine/build.sh	2020-04-25 17:11:35.085907844 +0100
@@ -233,7 +233,7 @@
 
         *)
         B2_CXX="${CXX} -x c++ -std=c++11"
-        B2_CXXFLAGS_RELEASE="-O2 -s"
+        B2_CXXFLAGS_RELEASE="${RPM_OPT_FLAGS} ${RPM_LD_FLAGS}"
         B2_CXXFLAGS_DEBUG="-O0 -g"
         esac
     ;;