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check error codes in GNU makefile

Started by cpp forever Oct 8, 2007 at 2:12 AM 0 replies 1.7k views

Original Post

Oct 8, 2007 at 2:12 AM

Hello. I want to create a GNU makefile target smth like this:


test:
       -printf "printf ok"
       echo "printf fails, echo ok"

But I want to execute

echo "printf fails, echo ok"

only when previous command (

-printf "printf ok"

) returns non-zero. How to do that IF checking? Does GNU makefile provides smth like this? ------ Under linux, bash.

Oct 8, 2007 at 3:32 AM

make uses sh internally to process its commands, so you can use any kind of sh operation you see fit. In this particular case:

test:       printf "printf ok" || echo "printf fails, echo ok"

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