make
compiling : screensaver.cpp -> build/screensaver.loPackage xscrnsaver was not found in the pkg-config search path.
Perhaps you should add the directory containing `xscrnsaver.pc'
to the PKG_CONFIG_PATH environment variable
No package 'xscrnsaver' found
Package compiz was not found in the pkg-config search path.
Perhaps you should add the directory containing `compiz.pc'
to the PKG_CONFIG_PATH environment variable
No package 'compiz' found
/bin/sh: libtool: not found
make: *** [build/screensaver.lo] Error 127