My build uses a version of gcc that does not support -ffile-prefix-map and this
is now broken after I updated the tree to include the latest commit to
kernel.bbclass "improve reproducibility" 012a70da7ae0617 by Juro Bystricky.
The patch introduces the line
cc_option_supported=`${KERNEL_CC} -Q --help=joined | grep ffile-prefix-map`
When gcc does not support -ffile-prefix-map, the grep will exit with a non-zero
return code which is caught and causes the do_compile step to fail.
Thanks,
Andrew
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