Fixes: http://autobuild.buildroot.org/results/3f0/3f07574e6e4edda9e31fcb0de520a4dbabe6b94a/ [Thomas: - Improved configure.ac logic, as suggested by Yann E. Morin. - Added a comment in the .mk file to indicate why we're using AUTORECONF = YES. Suggested by Yann as well.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>