https://github.com/numediart/MBROLA/pull/48

diff --git a/Makefile b/Makefile
index 47cf410..1494714 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,8 @@
 VERSION=3.3
 
 # To test strict C ANSI compliance
-CC = gcc -ansi -pedantic
+CC = gcc
+CFLAGS += -ansi -pedantic
 LIB= -lm
 
 # This allow you to write commands like "make PURE=purify demo1"
