[CMake] cmake with intel compilers

[burlen]

On 09/24/2012 09:29 AM, burlen wrote:
> On 09/24/2012 07:04 AM, Bill Hoffman wrote:
>> On 9/23/2012 4:29 PM, Burlen Loring wrote:
>>> hmmm, I was a bit hasty in concluding that the issue has gone away in
>>> newer releases. on another system, I have the issue with cmake 2.8.8.
>>> The intel compiler version there is 11.1. On this system if I don't
>>> include $INTEL_ROOT/include/intel64 explicitly , gcc's xmm intrinsics
>>> are found causing errors (typical error follows).  Examining the output
>>> of make VERBOSE=1, I'm not seeing any reference to the path containing
>>> either gcc or intel xmm intrinsics. Is this a cmake issue? or perhaps a
>>> configuration issue with the intel compiler on this system?
>>>
>>> /usr/lib64/gcc/x86_64-suse-linux/4.3/include/xmmintrin.h(105): error:
>>> identifier "__builtin_ia32_addss" is undefined
>>>      return (__m128) __builtin_ia32_addss ((__v4sf)__A, (__v4sf)__B);
>>
>> Does the compiler work from the command line with CMake?
>>
>>
> Using the compiler without cmake, I do need to include the extra path 
> to prevent gcc's intrinsics from being found. Looks like this is on 
> the intel side of things. Of the two systems I've tested recently the 
> system with intel 11.1 has the issue, while the system with intel 12.1 
> does not, both with cmake 2.8.8. As far as I can see both gcc and 
> intel compilers are configured similarly on these systems with both 
> compilers providing xmm intrinsics header. Apparently in the older 
> intel compiler gcc's directory was searched first, and thus 
> erroneously finding the gcc intrinsics. Apparently the newer version 
> of the intel compiler is searching its directories first. There's hope 
> that the issue is solved going forward, and probably not worth 
> worrying about in cmake...
After much confusion on my part I think I've finally got to the bottom 
of this. the source code in question was including xmmintin.h directly 
which is how it's supposed to be done with gcc but not with icc. More 
info: 
http://forum.kde.org/viewtopic.php?f=74&t=107947&sid=3c2d991327e2604c967440013e9c14fe 
<http://forum.kde.org/viewtopic.php?f=74&t=107947&sid=3c2d991327e2604c967440013e9c14fe>