lib or lib64?

[Treeve Jelbert]

I am trying to keep my qt5 related stuff separate from the qt4 stuff, 
so qt5 in installed to /opt/qt5.

The qt5 build process installs the libraries, cmake and pkgconfig stuff 
to /opt/qt5/lib.


attica5, strigi-5 and phonon4qt5 install to /opt/qt5/lib64

$ ls /opt/qt5/lib64
cmake                                libphonon4qt5.so.4        
libstreamanalyzer.so.0.7.8
libattica.so                         libphonon4qt5.so.4.6.60   
libstreams.so
libattica.so.0.4                     libsearchclient           
libstreams.so.0
libattica.so.0.4.1                   libsearchclient.so        
libstreams.so.0.7.8
libphonon4qt5experimental.so         libsearchclient.so.0      
pkgconfig
libphonon4qt5experimental.so.4       libsearchclient.so.0.7.8  strigi
libphonon4qt5experimental.so.4.6.60  libstreamanalyzer.so
libphonon4qt5.so                     libstreamanalyzer.so.0

libdbusmenu-qt5 installs to /opt/qt5/lib

kf5libs installs to /opt/qt5/lib

I am using the same cmake commands in all cases.

This becomes rather messy regarding search paths for pkgconfig and 
cmake.


How can I force everything into one place?