On Mon 2016-10-24 15:33:00 -0400, Ximin Luo wrote:
> HW42:
>> Btw: Do you know why currently debug-prefix-map maps the source dir to
>> '.'? (My guess is because that's the easiest in dpkg-buildflags) I think
>> for debugging between package boundaries '${srcpkg}-${srcver}' would be
>> much better.
>>
>> So maybe a MAP_SOURCE_PATHS variable would be better. But this has the
>> big disadvantage of making things more complex.
>
> I think this idea is good in principle and we should try to aim for
> it. My preference would be to have a second environment variable
> though, e.g. SOURCE_ROOT_PREFIX.
>
> I think combining both of these envvars into one single envvar of the
> form "$source=$target", though it matches the syntax for
> -fdebug-prefix-map, would make it harder for other programs and build
> tools to adopt as a standard.
Let me try to restate this cleanly. The goal is to standardize the
pathnames for any source-related path that gets embedded in the output
by compilation or other build-time processing.
SOURCE_ROOT → (optional) The full path to the base of the unpacked
source tree. This will be stripped from the beginning of
any source-related path that makes its way into any
generated artifact.
SOURCE_ROOT_PREFIX → (optional) This string is prefixed to the
beginning of any source-related path that makes
its way into any generated artifact.
SOURCE_ROOT path mangling takes place before SOURCE_ROOT_PREFIX path
mangling.
Is that the current proposal?
--dkg
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