--- a/makefile
+++ b/makefile
@@ -6,12 +6,12 @@
 # Thus we removed it. Clang ARM users can add -march=armv8-a+crypto to enable
 # ARM NEON crypto.
 CXX=c++
-CXXFLAGS=-O2 -std=c++11 -Wno-logical-op-parentheses -Wno-switch -Wno-dangling-else
+CXXFLAGS=$(RPM_OPT_FLAGS) -std=c++11 -Wno-logical-op-parentheses -Wno-switch -Wno-dangling-else
 LIBFLAGS=-fPIC
 DEFINES=-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DRAR_SMP
 STRIP=strip
 AR=ar
-LDFLAGS=-pthread
+LDFLAGS=$(RPM_LD_FLAGS) -pthread
 DESTDIR=/usr
 
 ##########################