30 The Makefile builds the hello executable if any one of main.cpp, hello.cpp, factorial.cpp changed. The smallest possible Makefile to achieve that specification could have been: hello: …

Feb 2, 2011 · For variable assignment in Make, I see := and = operator. What's the difference between them?

Dec 19, 2023 · KDIR ?= $(shell uname -r) What is the meaning of ?=? I have understood the difference between :=, += and = from another thread available in Stack Overflow, but unable ...

Feb 4, 2014 · A makefile is a recipe for the make utility how to create some file (called a target) from some other files (called dependencies) using a set of commands run by the shell.

0 Since no current answer mentions :::= or why it matters, I wrote a Makefile that demonstrates the expansion-time differences: # You may need to comment out entries not supported by your …

At this point, our makefile is simply remembering the work that needs doing, but we still had to figure out and type each and every needed command in its entirety. It does not have to be that …

270 In the GNU Makefile manual, it mentions these prefixes. If .ONESHELL is provided, then only the first line of the recipe will be checked for the special prefix characters (‘@’, ‘-’, and ‘+’). …

Dec 23, 2016 · A makefile is processed sequentially, line by line. Variable assignments are "internalized", and include statements cause the contents of other files to be inserted literally …

Dec 22, 2011 · What does the following do in a Makefile? rule: $(deps) @: I can't seem to find this in the make manual.

Aug 16, 2016 · If you use a special version of make to run the top-level makefile, the same special version will be executed for recursive invocations. As a special feature, using the variable …