🚀 go-pugleaf

#ifdef FEATURE_1 

Message envoy� : lundi 2 aout 2004 01:34 
>         // Do feature 1 stuff 
> #endif 

> Is there a way to do this without manually specifying each feature 
> flag as an environment variable and a -D flag separately? I'd like to 
> avoid having to keep each thing in sync. 



Try something like this: 

# --- GNU Makefile --- 
# invoke with e.g. 
#       make FEATURES="FEATURE_1 FEATURE_2" 


OBJ = main.o 


ifneq ($(filter FEATURE_1,$(FEATURES)),) 
        OBJ += feature1.o 
endif 
ifneq ($(filter FEATURE_2,$(FEATURES)),) 
        OBJ += feature2.o 
endif 


CFLAGS += $(patsubst %,-D%,$(FEATURES)) 


prog : $(OBJ) 
        $(CC) -o $@ $^ 


clean : ; rm -f prog *.o 


# --- END --- 

Marc-Olivier SAMBO



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