how to use logical OR on makefile conditionals

Src:
http://osdir.com/ml/gnu.make.windows/2004-03/msg00063.html

Notes:
How to have OR logic condition in Makefile? Please use "filter".

Subject: Re: how to use logical OR on makefile conditionals - msg#00063 List: gnu.make.windows gnu.make.windows Navigation:  Date: Prev Date Index Thread: Prev Thread Index Website Performance Monitoring %% lucy.allevato@xxxxxxxxxxxx writes: la> Is there a way to use logical OR on a makefile la> Something like: la> ifeq ($(A),$(B) || $(A),$(C)) , la> or la> ifeq ($(A),$(B)) || ifeq ($(A),$(C)) As I'm sure you've seen from the GNU make manual, there is no logical OR in makefile syntax. You have to use filter: ifneq (,$(filter $(A),$(B) $(C))) The filter will return B and/or C if they match A, and the ifneq empty string will be true if the filter returns any value. Note this only works if A, B, and C consist of a single word. If not you'll have to get even fancier, using something built around $(subst ...) probably. -- ------------------------------------------------------------------------------- Paul D. Smith <psmith@xxxxxxx> Find some GNU make tips at: http://www.gnu.org http://make.paulandlesley.org "Please remain calm...I may be mad, but I am a professional." --Mad Scientist