On Mar 20, 2014, at 8:25 AM, David Chisnall <thera...@freebsd.org> wrote:

> 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.

Sounds like we’re building the sysroot wrong then.


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