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

[Henrik Gramner]

On Sun, Jan 24, 2016 at 8:54 PM, Hendrik Leppkes <h.leppkes at gmail.com> wrote:
> Its just how it works. Relative paths can't switch drive in windows
> path, no matter how many ..'s you chain.
> Once you hit the root of a drive, .. just redirects to itself, just
> like a unix / would, except that you get one per drive instead of a
> global one.

Doesn't both MSYS and Cygwin map Windows drive letters to UNIX paths?
E.g. D: is at /d in MSYS.

So if you use UNIX paths it's possible to create a relative path
between two arbitrary locations.

Anyway, if git master is currently broken and there's no easy and
obvious fix available we should revert the original patch. Push an
updated version at a later time when all issues have been resolved.