--- gimplensfun-0.2.3/Makefile~	2013-11-12 10:52:05.767872402 +0400
+++ gimplensfun-0.2.3/Makefile	2013-11-12 10:57:13.130251920 +0400
@@ -10,7 +10,7 @@
 
 # set standard values, if not set by default
 CXX ?= g++
-CXXFLAGS += -O3 -Wall
+CXXFLAGS += $(RPM_OPT_FLAGS)
 
 
 # project-specific flags