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The "grep -e (x|y)" doesn't work, for example: $ echo xy | grep -e '(x|y)' No output We can use "grep -E" (extended regexp) or "grep -e x -e y" to fix it. It only affected the cross recipes. (From OE-Core rev: 62722de6d0ec00608eacc2cb0396362aced00047) Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>