From 4ede1637945ce7fc5fbc6c8c1ca3ce05847b1487 Mon Sep 17 00:00:00 2001
From: Daniel Gibson <metalcaedes@gmail.com>
Date: Sun, 2 Oct 2016 04:53:44 +0200
Subject: [PATCH] Fix window build with Makefile

the problem is that sdl2-config --libs apparently includes shit that's only
useful for the executable, but not dlls, like linking against SDL2main and
libmingw32 and setting -mwindows

Furthermore I forgot to add -lopengl32 and -shared to the ref_gl Windows
LDFLAGS.
---
 Makefile | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 6fee0f06..fbe07eb1 100755
--- a/Makefile
+++ b/Makefile
@@ -390,7 +390,7 @@ ifeq ($(WITH_SDL2),yes)
 release/quake2.exe : CFLAGS += -DSDL2
 endif
 
-release/quake2.exe : LDFLAGS += -mwindows -lopengl32
+release/quake2.exe : LDFLAGS += -mwindows
 
 else # not Windows
 
@@ -530,6 +530,12 @@ ifeq ($(WITH_SDL2),yes)
 release/ref_gl.dll : CFLAGS += -DSDL2
 endif
 
+release/ref_gl.dll : LDFLAGS += -lopengl32 -shared
+
+# don't want the dll to link against libSDL2main or libmingw32, and no -mwindows either
+# that's for the .exe only
+DLL_SDLLDFLAGS = $(subst -mwindows,,$(subst -lmingw32,,$(subst -lSDL2main,,$(SDLLDFLAGS))))
+
 else ifeq ($(OSTYPE), Darwin)
 
 ref_gl:
@@ -875,7 +881,7 @@ endif
 ifeq ($(OSTYPE), Windows)
 release/ref_gl.dll : $(REFGL_OBJS)
 	@echo "===> LD $@"
-	${Q}$(CC) $(REFGL_OBJS) $(LDFLAGS) $(SDLLDFLAGS) -o $@
+	${Q}$(CC) $(REFGL_OBJS) $(LDFLAGS) $(DLL_SDLLDFLAGS) -o $@
 	$(Q)strip $@
 else ifeq ($(OSTYPE), Darwin)
 release/ref_gl.dylib : $(REFGL_OBJS)