Allow building for macOS

Author: thp

platform/desktop/platform.mk

@@ -1,4 +1,10 @@
-PKGS += gl glib-2.0
+PKGS += glib-2.0
+
+ifeq ($(shell uname),Darwin)
+LIBS += -framework OpenGL
+else
+PKGS += gl
+endif
 
 install: $(TARGET)
 	install -m755 -D $(TARGET) $(DESTDIR)$(PREFIX)/bin/$(TARGET)

src/Config.h

@@ -2,10 +2,14 @@
 #define BRAINPARTY_CONFIG_H
 
 #if defined(USE_OPENGL_ES)
-#include <GLES/gl.h>
+#  include <GLES/gl.h>
 #else
-#include <GL/gl.h>
-#define glOrthof glOrtho
+#  if defined(__APPLE__)
+#    include <OpenGL/gl.h>
+#  else
+#    include <GL/gl.h>
+#  endif
+#  define glOrthof glOrtho
 #endif
 
 #include "SDL.h"