[CMake] Should CMake use /etc/ld.so.conf.d for find_library's CMAKE_SYSTEM_LIBRARY_PATH?

[Alexander Neundorf]

On Thursday 20 January 2011, James Bigler wrote:
> I'm noticing that on some systems they package the NVIDIA driver into
> different directories than the driver is typically installed.  In order to
> make stuff link properly at run time these non-standard locations are added
> to /etc/ld.so.conf.d.  I'm wondering if there is a reason not to use this
> information to add paths to CMAKE_SYSTEM_LIBRARY_PATH?  It would certainly
> help in finding libraries that are installed in diverse places.

Sounds like a useful idea IMO.
It could be done in UnixPaths.cmake, if /etc/ld.so.conf exists, parse it, get 
the directories from it, check for duplicates, and add them to the search 
paths.

Do you think it should be only added to the library search path or should 
the "/lib" at the end of each directory be removed and the remainder be added 
to the general search prefixes ?
Otherwise it might now find the libs, but maybe not the corresponding headers.

Alex