svn commit: r285284 - head/lib/liblzma

[Adrian Chadd]

Is there a blessed way to see whether the compiler we're using is an
external compiler, or an internal one?

eg, the version check isn't enough - it's just a number. how do I know
if it's freebsd clang versus upstream clang?
(Or in my instance, freebsd-gcc versus upstream-gcc.)


-a


On 8 July 2015 at 14:09, Pedro Giffuni <pfg at freebsd.org> wrote:
>
>
> On 07/08/15 13:36, Luigi Rizzo wrote:
>>
>> Author: luigi
>> Date: Wed Jul  8 18:36:37 2015
>> New Revision: 285284
>> URL: https://svnweb.freebsd.org/changeset/base/285284
>>
>> Log:
>>    only enable immintrin when clang is used. The base gcc does not support
>> it.
>>       Reviewed by:      delphij
>>
>> Modified:
>>    head/lib/liblzma/config.h
>>
>> Modified: head/lib/liblzma/config.h
>>
>> ==============================================================================
>> --- head/lib/liblzma/config.h   Wed Jul  8 18:12:24 2015        (r285283)
>> +++ head/lib/liblzma/config.h   Wed Jul  8 18:36:37 2015        (r285284)
>> @@ -150,7 +150,8 @@
>>   #define HAVE_ICONV 1
>>     /* Define to 1 if you have the <immintrin.h> header file. */
>> -#if defined(__FreeBSD__) && defined(__amd64__)
>> +/* FreeBSD - only with clang because the base gcc does not support it */
>> +#if defined(__clang__) && defined(__FreeBSD__) && defined(__amd64__)
>>   #define HAVE_IMMINTRIN_H 1
>>   #endif
>>
>
> FWIW, gcc 4.3+ does have it so this may some undesired (but hidden)
> effect when building with an external gcc.
>
> Pedro.
>