--- conf-cc-orig 2018-03-02 19:19:21.854371204 +0100 +++ conf-cc 2018-03-02 19:19:29.861371762 +0100 @@ -1,3 +1,3 @@ -gcc -O2 -Wall -Wshadow -Wcast-align -Wwrite-strings +gcc ${CFLAGS} -O2 -Wall -Wshadow -Wcast-align -Wwrite-strings This will be used to compile .c files.