[FFmpeg-trac] #8885(build system:reopened): Windows 10 long path support

[FFmpeg]

#8885: Windows 10 long path support
-------------------------------------+-------------------------------------
             Reporter:  stax76       |                    Owner:  (none)
                 Type:  enhancement  |                   Status:  reopened
             Priority:  wish         |                Component:  build
                                     |  system
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Elad Karako):

 f.y.i.
 you should be able to seamlessly patch up most of exe/dll/ocx (etc..) by
 using `mt.exe` (available in visual studio build tools you probably
 already have) and a generic manifest file like this one:
 https://github.com/eladkarako/manifest/blob/master/example_manifests/generic.manifest#L13

 (you can add `assemblyIdentity` and `description` blocks if you want)

 the commands are: (for exe use `1`, for dll use `2`, this is just an
 example, repeat as needed for any of your files).

 {{{
 mt.exe -nologo -manifest generic.manifest -outputresource:"ffmpeg.exe";1
 }}}

 {{{
 mt.exe -nologo -manifest generic.manifest
 -outputresource:"avcodec-59.dll";2
 }}}

 it should properly write embed the manifest (resource 24) into the file
 (overwriting any existing one).

 after you'll also apply a registry patch (one time):

 {{{
 Windows Registry Editor Version 5.00

 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem]
 "LongPathsEnabled"=dword:00000001
 }}}

 and reboot, you should be able to test it on your PC.

 it should effect those functions:
 CopyFileW, CopyFile2, CopyFileExW, CreateFileW, CreateFile2,
 CreateHardLinkW, CreateSymbolicLinkW, DeleteFileW, FindFirstFileW,
 FindFirstFileExW, FindNextFileW, GetFileAttributesW, GetFileAttributesExW,
 SetFileAttributesW, GetFullPathNameW, GetLongPathNameW, MoveFileW,
 MoveFileExW, MoveFileWithProgressW, ReplaceFileW, SearchPathW,
 FindFirstFileNameW, FindNextFileNameW, FindFirstStreamW, FindNextStreamW,
 GetCompressedFileSizeW, GetFinalPathNameByHandleW.

 no actual code change is needed.

 https://docs.microsoft.com/en-gb/windows/win32/fileio/maximum-file-path-
 limitation?tabs=cmd#enable-long-paths-in-windows-10-version-1607-and-later
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/8885#comment:10>
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