Many of the standard C++ library include files have been edited to no
longer include <unistd.h> to remove namespace pollution in gcc 4.7, so
we need include <unistd.h> manually sometimes.
More information:
http://gcc.gnu.org/gcc-4.7/porting_to.html
[YOCTO #2278]
(From OE-Core rev: 5e3c12313edc4b51ddd432ecbbd3b1f5295b3c14)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
[Updated patch header - sgw]
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
898bee7a4e