Re: [PATCH] Use SHELL_PATH to fork commands in run_command.c:prepare_shell_cmd

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Jeff King wrote:
> On Tue, Mar 27, 2012 at 12:01:10AM -0500, Jonathan Nieder wrote:

>> I noticed the Makefile already doesn't do this sort of thing for
>> mandir and htmldir, but do you think changes to SHELL_PATH should be
>> tracked to force a rebuild when it changes?
>
> Yeah, that would be nice.

Thanks.  On second thought, without the corresponding tracking for
PERL_PATH, USE_GETTEXT_SCHEME, localedir, etc, it doesn't seem worth
it.

> In general, I wish adding these sorts of dependencies wasn't so manual
> and painful. I'm not sure of a good solution short of totally retooling
> our build system, though.

The Linux kernel build system has an interesting solution to this.  It
keeps track of the command line used to build each file and forces a
rebuild when that command changes.

Ciao,
Jonathan
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