On 20 Mar 2014, at 14:08, John Baldwin <j...@freebsd.org> wrote:

> No, the compiler should provide a working "wmmintrin.h" header in one of
> its built-in paths if it supports the AES instructions.  This is akin to
> saying that code that uses "stdio.h" should use -I/usr/src/include.

It does, however our build system then explicitly says to the compiler 'don't 
use your built-it paths because they may contain declarations that contradict 
the FreeBSD ones' by means of the sysroot argument.  When not using an external 
toolchain, we put the compiler's internal headers inside the sysroot.


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