Only set CC to gcc if undefined (#29)

NunoDasNeves · simonxiaoss · commit 443788158d23 · 2019-05-29T14:18:16.000-07:00
diff --git a/src/Makefile b/src/Makefile
@@ -1,4 +1,6 @@
+ifndef CC
 CC=gcc
+endif
 ifeq ($(DEBUG), 1)
 CFLAGS=-Wall -W -O0 -ggdb3 -fno-omit-frame-pointer
 else
