Add support for overriding the Makefile location in makefile part type

[Zygmunt Krynicki]

For some non-trivial projects, a snapcraft part developer might like to ship a makefile in the source tree of the snap without having to modify an existing source tarball of a 3rd party project. For that use case, the developer could use the optional "makefile" part attribute to override the makefile executed by snapcraft to build that given part.

For example:

parts:
    foo:
        type: makefile
        makefile: Makefile.foo

This would cause snapcraft to run the following command at part build time:

make -f Makefile.foo -C parts/foo/build

[Leo Arias (elopio)]

Moved to https://github.com/ubuntu-core/snapcraft/issues/22

[Kyle Fazzari (kyrofa)]

Would using source-subdir here solve this problem?

[Sergio Schvezov (sergiusens)]

That is something different.

Some projects do things like this

Makefile.linux
Makefile.osx
Makefile.bsd

and so on, without any magic selection mechanism, so it needs to be
manually set.

Others use different makefiles as "configuration bundles"

On Wed, Jan 20, 2016 at 7:49 AM, Kyle Fazzari <email address hidden> wrote:

> Would using source-subdir here solve this problem?
>
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> https://bugs.launchpad.net/bugs/1500759
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> Title:
> Add support for overriding the Makefile location in makefile part type
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> Launchpad-Bug: product=snapcraft; status=Triaged; importance=Medium;
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> Launchpad-Bug-Commenters: elopio kyrofa zyga
> Launchpad-Bug-Reporter: Zygmunt Krynicki (zyga)
> Launchpad-Bug-Modifier: Kyle Fazzari (kyrofa)
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[Kyle Fazzari (kyrofa)]

Ah sure, that makes sense.

[Kyle Fazzari (kyrofa)]

Fix here: https://github.com/ubuntu-core/snapcraft/pull/264