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Xorg libraries that use Xmalloc need to know if malloc(0) returns NULL or not, and as this is a runtime test it can't be checked for. Previously xorg-lib-common declared that malloc(0) did return NULL, but this isn't true for eglibc (only uclibc). Instead, use libc-specific overrides to pass the relevant option. (ideally the check would use the autoconf cache so this can be stored in the site files) (From OE-Core rev: e628c8aba0189de30de2833882b9999ff3b6547a) Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>