'spack built pkg-config on cray\'s requires adding /usr/local/
and /usr/lib64/  to PKG_CONFIG_PATH in order to access cray \'.pc\'
files.
Adds the ACLOCAL path for autotools.'

def setup_dependent_environment(self, spack_env, run_env, dependent_spec):

    spack_env.append_path('ACLOCAL_PATH', join_path(self.prefix.share, 'aclocal'))
    if ('platform=cray' in self.spec):
        spack_env.append_path('PKG_CONFIG_PATH', '/usr/lib64/pkgconfig')
        spack_env.append_path('PKG_CONFIG_PATH', '/usr/local/lib64/pkgconfig')
