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

[Hendrik Leppkes]

On Sun, Jan 24, 2016 at 3:45 PM, Andreas Cadhalpun
<andreas.cadhalpun at googlemail.com> wrote:
>
> So here the correct path is passed to '-Fo'.
>
>> D:\Multimedia\ffmpeg\develop\libavdevice\alldevices.c : fatal error
>> C1083: Cannot open compiler generated file:
>> 'D:\Multimedia\ffmpeg\develop\D:\Multimedia\BuildEnv\MSYS2\Multimedia\ffmpeg\build\libavdevice\alldevices.o':
>> Invalid argument
>
> But it seems MSYS2 interpreted it as unix path and tried to convert it
> to a Windows path. This is probably caused by the original path using
> '/' instead of '\'.
>
> Does the following fix it?
> --- a/configure
> +++ b/configure
> @@ -6234,7 +6234,7 @@ enabled stripping || strip="echo skipping strip"
>  config_files="$TMPH config.mak doc/config.texi"
>
>  if enabled msvc; then
> -    dst_path=$(pwd -W)
> +    dst_path=$(pwd -W | sed 's_/_\\_g')
>  else
>      dst_path=$(pwd)
>  fi
>

If anything backslashes make it worse, now it won't even find its
include path anymore (ie fails at config.h not found).

- Hendrik