Some days back, while compiling kdebase, I faced the following errors-
— Installing: /usr/lib/python2.6/dist-packages/PyKDE4/plasmascript.py
CMake Error at plasma/generic/scriptengines/python/cmake_install.cmake:60 (FILE):
file INSTALL cannot copy file
“/home/kde-devel/kde/src/KDE/kdebase/workspace/plasma/generic/scriptengines/python/plasmascript.py”
to “/usr/lib/python2.6/dist-packages/PyKDE4/plasmascript.py”.
Thanks for Patrick Aljord for reporting the solution which is as follows-
We've to pass -DPYTHON_SITE_PACKAGES_DIR:PATH=/path/where/you/want/to/install to cmake when building kdebase.
If using Python 2.6, one can pass ~/.local/lib/python2.6/site-packages as the path, as it will be automatically added to the Python path when the interpreter is run.
So, if you are using cmakekde script and don't know how to do the above, try the following commands-
- cb KDE/kdebase
- cmake ../../../src/KDE/kdebase/ -DCMAKE_BUILD_TYPE=debugfull -DCMAKE_INSTALL_PREFIX=$KDEDIRS -DPYTHON_SITE_PACKAGES_DIR:PATH=~/.local/lib/python2.6/site-packages
- make install
Hope this helps 
Shantanu Tushar 