-CFLAGS="${CFLAGS:-%optflags}" ; export CFLAGS;
-CXXFLAGS="${CXXFLAGS:-%optflags}" ; export CXXFLAGS;
-LDFLAGS="${LDFLAGS:-%optflags}" ; export LDFLAGS;
+CFLAGS="${CFLAGS:-%optflags}" ;
+CXXFLAGS="${CXXFLAGS:-%optflags}" ;
+LDFLAGS="${LDFLAGS:-%optflags}" ;
+
+%if "%{vd_asan}" == "1" || "%{asan}" == "1"
+CFLAGS+=" -fsanitize=address"
+CXXFLAGS+=" -fsanitize=address"
+LDFLAGS+=" -fsanitize=address"
+%endif
+export CFLAGS;
+export CXXFLAGS;
+export LDFLAGS;