CODEWITHSUNDEEP
unixmakefile
amit
amit

Reputation: 178521

Parameter for rule in Makefile

I need to make a Makefile, and it should have a run rule. However, the run requires some parameters.

Does anyone have any idea how I can pass arguments in when running a rule in a Makefile? I want to be able to run the run rule with arguments by typing make run foo bar.

I tried this, but it didn’t work:

run:
    make compile
    ./scripts/runTrips $1 $2 $PLACES $OUT $VERS

The parameters I want supplied are the first and the second.

Upvotes: 18

Views: 14103

Answers (2)

Oleksiy Chernyavskyy
Oleksiy Chernyavskyy

Reputation: 71

Make itself doesn't provide passing arguments like for scripts. Usually make is used in the following way: you configure project than run just simple 'make'. Configuring can be done by running shell script 'configure'. This script is the one that you can pass parameters to. For example:

./configure param1 param2
make run

configure script must parse parameters and write them out to config.mk. config.mk must contain the following:

PARAM1 = val1
PARAM2 = val2

Your Makefile must include config.mk:

TOP = .
include $(TOP)/config.mk

run:
    make compile
    ./scripts/runTrips $(PARAM1) $(PARAM2) $(PLACES) $(OUT) $(VERS)

In your 'configure' script you can also check parameters for correctness and make other checks and calculations.

Upvotes: 5

buzzwang
buzzwang

Reputation: 336

When passing parameters to a make command, reference them like you would other internal make variables.

If your makefile looks like:

run:
        script $(param1) $(param2)

You can call it with the following syntax:

$> make run param1=20 param2=30

and make should call the script like:

script 20 30

Upvotes: 31

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