Merge pull request #134 from lordfeck/UseSdl2ConfigIncludePath

Use "sdl.h" include and sdl-config include path in makefile.

Makefile

@@ -133,6 +133,7 @@ COMMON_SRC = \
 COMMON_OBJ = $(patsubst %.c, $(BUILD_DIR)/%.o, $(COMMON_SRC))
 COMMON_DEPS = $(patsubst %.c, $(BUILD_DIR)/%.d, $(COMMON_SRC))
 
+sdl: C_FLAGS += $(shell sdl2-config --cflags)
 sdl: $(BUILD_DIR)/src/platform_sdl.o
 sdl: $(COMMON_OBJ)
 	$(CC) $^ -o $(TARGET_NATIVE) $(L_FLAGS) $(L_FLAGS_SDL)

src/platform_sdl.c

@@ -1,4 +1,4 @@
-#include <SDL2/SDL.h>
+#include "SDL.h"
 
 #include "platform.h"
 #include "input.h"