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: main.cpp hello.cpp …

Feb 2, 2011 · This is an old question but this example helps me understand the difference whenever I forget. Running make with the following Makefile will instantly exit: a = $(shell sleep 3) Running make …

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 ...

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 particular …

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.

Feb 23, 2014 · I am seeing a makefile and it has the symbols $@ and $< in it. I have never seen them, and Google does not show any results about them. Do you know what these commands do?

What does % symbol in Makefile mean Ask Question Asked 8 years, 10 months ago Modified 4 years, 3 months ago

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 at that …

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

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 ‘+’). What do …