Is there a way to get the -j parameter from a make invocation?

Question

Lets say I call:

make -j 5

Is there a way, within my Makefile to get the -j parameter ?

My goal is to call scons from a Makefile a to keep the ability to use several jobs to fasten compilation.

Something like:

# The Makefile
all:
    scons -j ${GET_J_PARAMETER}

Thank you.

Foot note: I know I should better call scons directly but some of the developers where I work have been typing make for almost ten years and it seems impossible for them to type anything else to build their libraries...

score 4 · Accepted Answer · answered May 24 '11 at 14:27

4

I think the MAKEFLAGS contains that information.

Read more about it here GNU Make

Section 7.3 explains how to test for a specific parameter.

answered May 24 '11 at 14:27

Fredrik Pihl

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This doesn't actually work - the j flag is special and doesn't appear completely in MAKEFLAGS. http://stackoverflow.com/questions/4778389 has more workarounds that may help. – richq May 28 '11 at 09:26

Is there a way to get the -j parameter from a make invocation?

1 Answers1