[CMake] anybody crosscompiling and using pkg_config ?

[Alexander Neundorf]

Hi,

when crosscompiling, pkg_config shouldn't find packages for the host system, 
but for the target system. 
Attached is a patch against current cmake cvs which tries to do that by 
setting the env var PKG_CONFIG_LIBDIR to /usr/lib/pkgconfig 
and /usr/local/lib/pkgconfig inside the directories of CMAKE_FIND_ROOT_PATH.

So, can somebody please test the attached patch ?

Thanks
Alex
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