how to improve compactness?

[Matej Košík]

Hello,

In my Makefile, I have a series of lines like this:

        dir := src/foo-01
        include $(dir)/rules.mk

        dir := src/foo-02
        include $(dir)/rules.mk

        dir := src/foo-03
        include $(dir)/rules.mk

        ...

As I add new and new foo-directories, I have to add new entries to the
Makefile.

At "make time", I can enumerate existing foo-directories with

        $(wildcard src/foo-*)

but I do not know how to generate those Makefile directives because
parametrical variables and $(foreach ...) can only expand to one-line
text where I need expansion to two lines.

I am not sure how to tackle this.

Thank you in advance for any possible help.

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