Travis CI: debian build: add -Wsign-compare -Wunused-parameter to CFLAGS

.build.yml

@@ -107,6 +107,11 @@ before_scripts:
   - make install
 
 build_scripts:
+  - if [ ${DISTRO_NAME} == "debian" ];then
+  -     export CFLAGS+=" -Wsign-compare -Wunused-parameter"
+  -     cppcheck --enable=warning,style,performance,portability,information,missingInclude .
+  - fi
+
   - NOCONFIGURE=1 ./autogen.sh
   - scan-build $CHECKERS ./configure --enable-compile-warnings=maximum
   - if [ $CPU_COUNT -gt 1 ]; then
@@ -114,9 +119,6 @@ build_scripts:
   - else
   -     scan-build $CHECKERS --keep-cc -o html-report make
   - fi
-  - if [ ${DISTRO_NAME} == "debian" ];then
-  -     cppcheck --enable=warning,style,performance,portability,information,missingInclude .
-  - fi
 
 after_scripts:
   - if [ ${DISTRO_NAME} == "fedora" ];then