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Editorial Team
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Asked: 2026-05-25T06:09:57+00:00

If I have something like this: PROJECTS += path/to/first PROJECTS += path/to/second PROJECTS +=

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If I have something like this:

PROJECTS += path/to/first
PROJECTS += path/to/second
PROJECTS += path/to/third

and

LIBS += lib_output/first.lib
LIBS += lib_output/second.lib
LIBS += lib_output/third.lib

How could I associate the project from PROJECTS += path/to/first with LIBS += lib_output/first.lib? Is there something like a hashmap available in a makefile? Or possibility to search in an array?

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1 Answer

  1. Editorial Team

    You can simulate lookup tables using computed variable names and the fact that make variable names can include some special characters like dot and forward slash:

    PROJECTS += path/to/first
PROJECTS += path/to/second
PROJECTS += path/to/third

LIBS += lib_output/first.lib
LIBS += lib_output/second.lib
LIBS += lib_output/third.lib

lookup.path/to/first  := lib_output/first.lib
lookup.path/to/second := lib_output/second.lib
lookup.path/to/third  := lib_output/third.lib

path := path/to/first
$(info ${path} -> ${lookup.${path}})
path := path/to/second
$(info ${path} -> ${lookup.${path}})
path := path/to/third
$(info ${path} -> ${lookup.${path}})

    Outputs:

    $ make
path/to/first -> lib_output/first.lib
path/to/second -> lib_output/second.lib
path/to/third -> lib_output/third.lib
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