"requires" checks the "FEATURE" environment for specified prerequisits, and skip the execution of test if not found. "build_qemu" is the central routine to compile QEMU for tests to call. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1464755128-32490-8-git-send-email-famz@redhat.com