--- sources/PL/src/Makefile.FreeBSD.orig	2020-08-29 08:59:42 UTC
+++ sources/PL/src/Makefile.FreeBSD
@@ -12,7 +12,7 @@ CC ?= gcc
 
 # Options to CC
 
-CFLAGS = -ansi                       \
+CFLAGS += -ansi                       \
          -Wall                       \
          -pedantic                   \
          -ffloat-store               \