This test for libdevmapper was always silently failing because the linker never got the `-ldevmapper` information. Putting the flag last corrects the test. Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp) Upstream-commit: e2076453071f9fc82478557919d327c958eec712 Component: engine