Joining elements of a list in GNU Make

Question

In my makefile I have a variable with a list of directories, like this:

DIRS = /usr /usr/share/ /lib

Now, I need to create PATH variable fr

Answer 1

You use ':' as separator, so you are on Linux. Consider using bash tool chain to replace continuous spaces by single colon

PATH := $(shell echo $(DIRS) | sed "s/ \+/:/g")