Add override for CFLAG += for MACOS

For some reason, on MACOSX, adding the flags for SDL didn't work
without adding the override directive.

diff --git a/src/sdl/Makefile b/src/sdl/Makefile
index 570005d87b529537e321cf7c9f754e276cf24dc6..39fa34eccfd434f8bc23a7f33f4161bbf43dd817 100644 (file)
--- a/src/sdl/Makefile
+++ b/src/sdl/Makefile
@@ -6,7 +6,7 @@ SDL_PKGS ?= libpng libjpeg sdl2 SDL2_mixer freetype2 zlib
 CC = gcc
 #CC = clang
 
-CFLAGS += `pkg-config $(SDL_PKGS) --cflags`
+override CFLAGS += `pkg-config $(SDL_PKGS) --cflags`
 
 SOURCES = sf_fonts.c sf_msg_en.c sf_resource.c sf_util.c \
        sf_deffont.c sf_ftype.c sf_osfdlg.c sf_sig.c sf_video.c \