diff --git a/Makefile b/Makefile
index 0664ddd8e..a7226341e 100644
--- a/Makefile
+++ b/Makefile
@@ -52,6 +52,9 @@ endif
 
 PYTHON ?= $(shell rpm -E %__python || echo /usr/bin/python)
 
+CFLAGS := -g -O2 -Werror -Wall -Wextra -Wformat-security -Wno-unused-parameter -Wno-sign-compare -Wno-missing-field-initializers $(CFLAGS)
+export CFLAGS
+
 all: bootstrap-autogen server tests
 	@for subdir in $(SUBDIRS); do \
 		(cd $$subdir && $(MAKE) $@) || exit 1; \