Test whether a directory exists inside a makefile

Question

In his answer @Grundlefleck explains how to check whether a directory exists or not. I tried some to use this inside a makefile as follow:

foo.b         


        

Answer 1

Try this:

.PHONY: all
something:
    echo "hi"
all:
    test -d "Documents" && something

This will execute the commands under something only if Documents exists.

In order to address the problem noted in the comments, you can make a variable like this:

PATH_TEST = ~/SomeDirectory

test -d $(PATH_TEST) && something