cc1: warnings being treated as errors
buildroot/buildroot/build_powerpc/makedevs/makedevs.c: In function main:
buildroot/buildroot/build_powerpc/makedevs/makedevs.c:531: error:
ignoring return value of system, declared with attribute warn_unused_result
This change adds a simple warning if system() fails.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>