config/default: using -qstrict on IBM

config/default

@@ -107,7 +107,7 @@ case "${HOSTNAME}" in
                     --with-zlib=/sw/aix53/zlib-1.2.3 \
                     --with-szlib=/sw/aix53/szip-2.1 \
                     AR="ar -X 64" LDFLAGS="-brtl" FC=xlf_r CC=xlc_r \
-                    CFLAGS="-g -O3 -q64 -qhot -qarch=auto -qtune=auto -DHAVE_MMAP -Dextname" \
+                    CFLAGS="-g -O3 -q64 -qhot -qstrict -qarch=auto -qtune=auto -DHAVE_MMAP -Dextname" \
                     SHELL=/bin/bash
         ;;
     *)