[ITK Community] ITK build: ITK build directory path length is too long (56 > 50) - Seriously? - what I would not give to trim 6 chars from my path.

[Matt McCormick]

Hi Brian,

Yes, the error message describes the correct situation.

To fix this issue, improvements will have to be made to CMake's Visual
Studio generator or inside Visual Studio.  Otherwise, a shorter path
length has to be used.

Thanks,
Matt

On Mon, Dec 16, 2013 at 10:34 AM, Brian Davis <bitminer at gmail.com> wrote:
> After trying to build latest version of ITK I ran into this build issue
>
> CMake Error at CMakeLists.txt:28 (message):
>   ITK build directory path length is too long (56 > 50).Please set the ITK
>   build directory to a directory with a shorter path.
>
> Where I have specified:
>
> Source code:
> C:\projects\dsa4d\ctutil_3rdParty\source\itk-4.4.2
> Build the binaries
> C:/projects/dsa4d/ctutil_3rdParty/source/itk-4.4.2/build
>
> Which I do not think is unreasonable for a path when I want a projects dir,
> project name dir, and branch name dir.  But whoa was I ever wrong.
>
> After reading the filed bug:
>
> http://www.cmake.org/Bug/view.php?id=14262
>
> which was posted in 2013... pretty recent considering that I have build ITK
> in paths much worse that above and it worked just fine.
>
> I am left in dumbfounded amazement that this bug was closed with reason:
>
>>> ======
> The error message comes from CMakeLists.txt code in ITK, not from CMake.
>
> Furthermore, the limit comes from path lengths used within ITK's source and
> build trees that exceed the Windows maximum path length limit (VS hits these
> internally during the build). You simply can't build ITK in a longer path.
>
> Either way, this is not a CMake issue so I'm resolving it as "no change
> required".
>>> ======
>
> Well we simply built it prior 2013 in longer paths so it simply can be
> built!  What changed?
>
> Wow that's great!  Should I change my path to C:\  ???  .... I am going to
> get on that right now.
>
>
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