Revert "Fix travis-ci build"

This reverts commit a9a41b9dfa4a4cc63e0936600511bd29fe76d29e.
Revert "Fix travis-ci build"

This reverts commit 9c6d56cfbaf64071d05752f4794eb3e7e506280b.
Revert "use cmake for travis-ci.org"

This reverts commit f79502255f142b78df9377ad6568beffd7bcf16a.