repetitive path gives filename too long errors

[Ryan Schmidt]

On Mar 8, 2015, at 4:42 PM, René J.V. Bertin wrote:

> I'm struggling with the py-pykde4 package, which is giving me filename overflows due to constructing a path that contains repetitions of itself. I first ran into this in November, have since updated to CMake 3.1.2, and now see that the issue hasn't been solved:
> 
> https://mail.kde.org/pipermail/kde-mac/2014-November/002404.html
> 
> and that I'm not the only one:
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=750231
> 
> I saw a hint that using Ninja might avoid the issue, and indeed the cmake step works fine with that generator. However:
> 
> %> (cd py27-pykde4-mp9-work/build/ ; ninja)
> /Volumes/Debian/MP9/var/macports/build/_Volumes_Debian_MP9_site-ports_python_py-pykde4/py27-pykde4/work/build
> ninja: error: stat(_Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build_pykdeconfig.pyc): File name too long
> ninja: error: stat(CMakeFiles/_Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build_pykdeconfig.pyc.util): File name too long
> ninja: error: stat(CMakeFiles/_Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build_pykdeconfig.pyc.util): File name too long
> ninja: error: stat(CMakeFiles/_Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build__Volumes_Debian_MP9_var_macports_build__Volumes_Debian_MP9_site-ports_python_py-pykde4_py27-pykde4_work_build_pykdeconfig.pyc.util): File name too long
> (etc)
> 
> Is this because of an error in pykde4's CMake files, or is this an unavoidable side-effect of the way CMake works?
> NB: I tried setting pykde4_SOURCE_DIR and pykde4_BINARY_DIR on the commandline, but that had no effect (other than that the values appeared in CMakeCache.txt).

I agree, those filenames are too long. Whatever is creating those long filenames should rethink that strategy. I don't know what's creating those filenames, only that it's not MacPorts.