fix building

cvs/cvs.spec

@@ -99,9 +99,10 @@ AutoReqProv:  no
 %build
     ( cd cvs-%{V_cvs}
       CC="%{l_cc}" \
-      CFLAGS="%{l_cflags -O}" \
 %if "%{rse_patches}" == "yes"
-      CPPFLAGS="-DRSE_PATCHES"
+      CFLAGS="%{l_cflags -O} -DRSE_PATCHES" \
+%else
+      CFLAGS="%{l_cflags -O}" \
 %endif
       ./configure \
           --prefix=%{l_prefix} \