Re: [ptxdist] Globally define GIT_CEILING_DIRECTORIES?

[Michael Olbrich <m.olbrich@pengutronix.de>]

Hi,

On Mon, Feb 13, 2023 at 02:58:49PM +0100, Sven Püschel wrote:
> I would suggest globally setting the GIT_CEILING_DIRECTORIES environment
> variable when building packages.
> 
> Besides lshw, sockperf is now the second time I've encountered the
> buildsystem to check the current git repository. But as Git also checks the
> parent directories when searching for Git repositories, these checks may
> result in getting an unwanted Git repository (usually the BSP), resulting in
> package versions with a Git commit/version that has nothing to do with the
> actual package.
> 
> With GIT_CEILING_DIRECTORIES set to the parent directory of the extracted
> sources, Git will stop searching for parent Git repositories, when it
> encounters this directory. See my sockperf v2 patch for an example of using
> this environment variable.
> 
> Given this is a global change, does anyone see a potential problem?

I've been thinking about similar issues from time to time. Mostly when I'm
digging into package sources. It happens occasionally that I do a 'git
grep', which succeeds without finding something... So I'd prefer a solution
that works here as well.

One idea is to create an empty platform-XXX/.git file. Git will stop here
with an error: "fatal: invalid gitfile format:  .../platform-XXX/.git".
It's not the best error, but it should solve both our issues.

Michael

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