[FFmpeg-devel] [PATCH] build: fix make checkheaders in out-of-tree builds

[Andreas Cadhalpun]

On 24.01.2016 20:40, Hendrik Leppkes wrote:
> On Sun, Jan 24, 2016 at 7:27 PM, Andreas Cadhalpun
> <andreas.cadhalpun at googlemail.com> wrote:
>> On 24.01.2016 17:14, Henrik Gramner wrote:
>> I have a hard time believing that there are environments, where one
>> can't use absolute paths...
> 
> Its about the combination of msys and its automatic path translation
> and the special option syntax msvc uses which msys doesn't recognize,
> otherwise it would be fine.
> But alas it is how it is, and we have to deal with what we have.

:-/

>> OK, let's try this.
>> Attached is a patch calculating dst_path as relative path.
>> That should hopefully work everywhere. Please test it.
>>
> 
> Unfortunately that doesn't work when there is no common path, ie.
> sources on another drive (say D:) as my build directory (say C:)

Don't do that then?

> The script produces a long chain of "../.." then of course, which
> would work on a unix-like filesystem, but the only way to switch
> drives in windows-path is using absolute paths.

Why does it not work with relative paths?
That looks like (another) bug in that environment.

Best regards,
Andreas