Turn some compiler warnings into errors

Re-apply the reverted commit 98bc7fa50d0731864297f8fb82932d480c426ff6, this
time with a clear error message in case autoconf-archive is not installed.

Change-Id: I631bde22e79ec0318eb9c8114db5861a1d635816
Tweaked-by: Neels Hofmeyr <nhofmeyr@sysmocom.de>
2 files changed
tree: f3dec614d087ddeaabe98da78de3c3dab170ead1
  1. contrib/
  2. debian/
  3. openbsc/
  4. .gitignore
  5. .gitreview
  6. .mailmap