esden/libcmsis — pull request #1 by jhgorse (2013-03-20 02:17:11+00:00)
Title: libcmsis.a is installed as "${install_dir}/lib"

If installing to an isolated (fresh) location on Darwin, libcmsis.a becomes
"${install_dir}/lib"

Which is not a directory. Some implementations of install probably behave differently.