mesa use its script file bin/mklib to generate libraries, and call the
host's commands "ar/ranlib/gcc/g++". Fix it to call the cross-compile
tools properly.
(From OE-Core rev: 0a815e889d056f44af1ada623b4b2edcb699693a)
Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>