define MinCyg_GCC
sed -n /'^gcc version '/s',.*\<\([A-Za-z]*\)\> \(special\|experimental\).*',\\1,p
endef
define Any_GCC
sed -n /'^gcc version '/s',.*\<\([A-Za-z]*\)\>.*',\\1,p
endef

ASK_SHELL_FIND_GCC := $(shell gcc -v 2>&1 | $(MinCyg_GCC))
 ifeq "$(ASK_SHELL_FIND_GCC)" ""
ASK_SHELL_FIND_GCC := $(shell gcc -v 2>&1 | $(Any_GCC))
 endif
 ifneq "$(ASK_SHELL_FIND_GCC)" ""
GCC_FLAVOR := $(strip $(ASK_SHELL_FIND_GCC))
 endif

ifeq "$(GCC_FLAVOR)" "cygming"
CFLAGS  += -mno-cygwin 
override LIBS += -lglut32 -lglu32 -lopengl32
endif

LIBS += -lglut -lGLU -lGL

CFLAGS += -ggdb -Wall -std=c99 

FILES=scene.c scene.h bitmap.c bitmap.h globals.c globals.h helper.c helper.h types.h

.PHONY: all

all: scene commit

scene: $(FILES)
	gcc $(CFLAGS) -o $(FILES) $(LIBS)

commit:	$(FILES)
	git commit -a --allow-empty-message --message="" --untracked-files=no; true

clean:
	rm scene