Makefile Optimization: $(shell) and := go Together

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and $(shell) in your Makefile is to run the command:

grep -n \$\(shell Makefile | grep -v := 

It'll print out the line number and details of every line in Makefile that contains a $(shell) and doesn't contain a :=. Take a look at what it finds to see if your Makefile can be optimized.

About the author

John Graham-Cumming's picture John Graham-Cumming

John Graham-Cumming is Co-Founder at Electric Cloud, Inc . Prior to joining Electric Cloud, John was a Venture Consultant with Accel Partners, VP of Internet Technology at Interwoven, Inc. (IWOV), VP of Engineering at Scriptics Corporation (acquired by Interwoven), and Chief Architect at Optimal Networks, Inc. John holds BA and MA degrees in Mathematics and Computation and a Doctorate in Computer Security from Oxford University. John is the creator of the highly acclaimed open source POPFile project. He also holds two patents in network analysis and has others pending.

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