The matio package exhibits gcc bug 99410 when built for the Nios2
architecture with optimization enabled, which causes a build failure.
As done for other packages in Buildroot work around this gcc bug by
setting optimization to -O0 if BR2_TOOLCHAIN_HAS_GCC_BUG_99410=y.
Fixes:
http://autobuild.buildroot.net/results/971/9714160b80a0d1a01983d29af38a95049c07b4d3/
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
97f8cc355b