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binutils-arc-2016.09-eng008 build fails sometimes. This happens due to the following issue: binutils configure script has CC variable that stores compiler for target and CC_FOR_BUILD variable that stores compiler for host. WARN_FLAGS are verified by the script to be compatible only with CC compiler but not with CC_FOR_BUILD compiler. Despite this WARN_FLAGS are passed to both CC and CC_FOR_BUILD compilers. This leads to unevident errors when cross-compiling. More information you can find in the binutils mailing list: https://sourceware.org/ml/binutils/2016-08/msg00117.html We are going to write a patch for bunutils that fixes the initial issue. Current patch contains temporary workaround. It should be deleted after real fix. Fixes: http://autobuild.buildroot.net/results/00455b6a8324920ad843d90ce0413451522691a8// Signed-off-by: Vlad Zakharov <vzakhar@synopsys.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>