What is xmmintrin.h, and why aren't ports finding it?

[Chris H]

On Fri, 7 Nov 2014 13:10:51 +0100 Dimitry Andric <dim at FreeBSD.org> wrote

> On 07 Nov 2014, at 04:36, Chris H <bsd-lists at bsdforge.com> wrote:
> > 
> > Greetings,
> > Working on a recent 11-CURRENT install
> > (11-CURRENT #1 amd64 r274134 Nov 5 12:56:14 PST 2014)
> > svn info /usr/ports Revision: 372176
> > 
> > Given the above, and the fact that I have installed lang/gcc-48.
> > Is there any reason that any port wanting to include xmmintrin.h
> > fails to find it? Even though dmesg && messages reflects the fact
> > that gcc48 is included within my $PATH?
> 
> What you have in your PATH does not matter.  The xmmintrin.h header
> contains SSE intrinsics, and should automatically be found by your gcc
> 4.8 port.  Normally it is located in:
> 
> /usr/local/lib/gcc48/gcc/i386-portbld-freebsd11.0/4.8.4/include/xmmintrin.h
> 
> or if you have a slightly different gcc version, just run:
> 
> find /usr/local/lib/gcc48 -name xmmintrin.h
> 
> to find it.  If you run:
> 
> gcc48 -v -x c -c /dev/null -o /dev/null
> 
> it should show you the paths it searches for include files (look for the
> "#include <...> search starts here:" line).  For example, on my system
> this shows:
> 
> #include <...> search starts here:
>  /usr/local/lib/gcc48/gcc/i386-portbld-freebsd11.0/4.8.4/include
>  /usr/local/include
>  /usr/local/lib/gcc48/gcc/i386-portbld-freebsd11.0/4.8.4/include-fixed
>  /usr/include
> End of search list.
> 
> The directory where you found xmmintrin.h should be listed in the search
> directories.
> 
Thank you _very_ much for the reply, Dimitry.
Indeed, following your example above. Indicates that xmmintrin.h
_is_ in the search path. I think it must be a matter of _which_
CC USE_GCC is defaulting to. I'll have to examine things in
that range, a little closer.

Thank you again, for the informative reply, Dimitry.

--Chris

> -Dimitry
> 
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