From 527e765cf579b4374cbeb60151f3d7bbb138bdf1 Mon Sep 17 00:00:00 2001
From: Tony Cook <tony@develop-help.com>
Date: Mon, 15 Jan 2024 15:26:23 +1100
Subject: [PATCH] win32/GNUmakefile: enable warnings for gcc

Warnings are already enabled for MSVC, so enable them for GCC too.

-Wformat is disabled since the default "__printf__" format checker
doesn't understand the C99-isms like "%zd", resulting in many spurious
warnings.  The __gnu_printf__ checker does understand them, but it
doesn't understand the Windows specific "%I64d" and similar formats.
---
 win32/GNUmakefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/win32/GNUmakefile b/win32/GNUmakefile
index e71347e7dd3b..521f5961c928 100644
--- a/win32/GNUmakefile
+++ b/win32/GNUmakefile
@@ -619,9 +619,11 @@ OPTIMIZE	= -Os
 LINK_DBG	= -s
 endif
 
-EXTRACFLAGS	=
+EXTRACFLAGS	= -Wall -Wextra -Werror=pointer-arith -Wno-format -Wno-long-long -Werror=vla
 ifeq ($(USE_CPLUSPLUS),define)
 EXTRACFLAGS	+= $(CXX_FLAG)
+else
+EXTRACFLAGS	+= -std=c99
 endif
 CFLAGS		= $(EXTRACFLAGS) $(INCLUDES) $(DEFINES) $(LOCDEFS) $(OPTIMIZE)
 LINK_FLAGS	= $(LINK_DBG) -L"$(INST_COREDIR)" -L"$(subst ;," -L",$(CCLIBDIR))"