From 8be93762d9a94a56bf430e0e177bdefb5b1fa0dd Mon Sep 17 00:00:00 2001
From: Ahmad Fatoum <ahmad@a3f.at>
Date: Thu, 25 Jan 2018 22:34:29 +0100
Subject: Make function calls without prior declaration an error

which is the default behavior on C99 and up.
---
 src/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/Makefile')

diff --git a/src/Makefile b/src/Makefile
index c88aa6dd..fc85ea0a 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -262,7 +262,8 @@ endif
 #  -Wno-missing-braces   ignore invalid warning (GCC bug 53119)
 #  -D_DEFAULT_SOURCE     use with -std=c99 on Linux and PLATFORM_WEB, required for timespec
 #  -Werror=pointer-arith catch unportable code that does direct arithmetic on void pointers
-CFLAGS += -O1 -Wall -std=c99 -D_DEFAULT_SOURCE -fgnu89-inline -Wno-missing-braces -Werror=pointer-arith
+#  -Werror=implicit-function-declaration catch function calls without prior declaration
+CFLAGS += -O1 -Wall -std=c99 -D_DEFAULT_SOURCE -fgnu89-inline -Wno-missing-braces -Werror=pointer-arith -Werror=implicit-function-declaration
 
 ifeq ($(RAYLIB_BUILD_MODE), DEBUG)
     CFLAGS += -g
-- 
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