Re: [CMake] 'No known features for CXX compiler' warning with custom Clang

2016-12-20 Thread James Turner 

> On 19 Dec 2016, at 09:51, James Turner  wrote:
> 
> In my case there is no feature_tests.cxx generated at all. 

For the benefit of posterity, Robert very kindly figured this out: the problem 
is I did not have CMP0025 set, and the minimum CMake version was set < 3.3

This breaks compiler feature detection with a custom Clang. Setting the policy 
to NEW makes everything work as expected.

Kind regards,
James

--
James Turner - Senior Software Developer
KDAB - The Qt, C++ and OpenGL Experts






smime.p7s
Description: S/MIME cryptographic signature
-- 

Powered by www.kitware.com

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Kitware offers various services to support the CMake community. For more 
information on each offering, please visit:

CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake

Re: [CMake] 'No known features for CXX compiler' warning with custom Clang

2016-12-19 Thread Robert Maynard 
Are you able to send me the CMakeError.log and CMakeOutput.log from
your build/CMakeFiles/ directory.

On Mon, Dec 19, 2016 at 4:51 AM, James Turner  wrote:
>
>> On 16 Dec 2016, at 22:59, Robert Maynard  wrote:
>>
>> That is odd. Inside your build/CMakeFiles should be a file called
>> feature_tests.cxx, and that file is how we determine what features the
>> clang compiler supports.
>>
>> I would use that to determine why feature detection is failing, since
>> currently it believes that none of the features listed in it are
>> valid.
>>
>> Now if the file is empty, that means we are looking at a CMake logic
>> bug somewhere before this.
>
> In my case there is no feature_tests.cxx generated at all.
>
> Kind regards,
> James
>
> --
> James Turner - Senior Software Developer
> KDAB - The Qt, C++ and OpenGL Experts
>
>
>
>
-- 

Powered by www.kitware.com

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Kitware offers various services to support the CMake community. For more 
information on each offering, please visit:

CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake

Re: [CMake] 'No known features for CXX compiler' warning with custom Clang

2016-12-19 Thread James Turner 

> On 16 Dec 2016, at 22:59, Robert Maynard  wrote:
> 
> That is odd. Inside your build/CMakeFiles should be a file called
> feature_tests.cxx, and that file is how we determine what features the
> clang compiler supports.
> 
> I would use that to determine why feature detection is failing, since
> currently it believes that none of the features listed in it are
> valid.
> 
> Now if the file is empty, that means we are looking at a CMake logic
> bug somewhere before this.

In my case there is no feature_tests.cxx generated at all. 

Kind regards,
James

--
James Turner - Senior Software Developer
KDAB - The Qt, C++ and OpenGL Experts






smime.p7s
Description: S/MIME cryptographic signature
-- 

Powered by www.kitware.com

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Kitware offers various services to support the CMake community. For more 
information on each offering, please visit:

CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake

Re: [CMake] 'No known features for CXX compiler' warning with custom Clang

2016-12-16 Thread Robert Maynard 
That is odd. Inside your build/CMakeFiles should be a file called
feature_tests.cxx, and that file is how we determine what features the
clang compiler supports.

I would use that to determine why feature detection is failing, since
currently it believes that none of the features listed in it are
valid.

Now if the file is empty, that means we are looking at a CMake logic
bug somewhere before this.

On Fri, Dec 16, 2016 at 5:41 PM, James Turner  wrote:
>
>> On 16 Dec 2016, at 15:30, Robert Maynard  wrote:
>>
>> /CMakeFiles/3.7.0/CMakeCXXCompiler.cmake
>>
>> The important information being what CMAKE_CXX_COMPILER_ID and
>> CMAKE_CXX_COMPILER_VERSION are set too.
>
> Here’s what I have. I note the _FEATURES variables are all empty.
>
> set(CMAKE_CXX_COMPILER "/usr/local/bin/clang-omp++")
> set(CMAKE_CXX_COMPILER_ARG1 "")
> set(CMAKE_CXX_COMPILER_ID "Clang")
> set(CMAKE_CXX_COMPILER_VERSION "3.5.0")
> set(CMAKE_CXX_COMPILER_WRAPPER "")
> set(CMAKE_CXX_STANDARD_COMPUTED_DEFAULT "98")
> set(CMAKE_CXX_COMPILE_FEATURES "")
> set(CMAKE_CXX98_COMPILE_FEATURES "")
> set(CMAKE_CXX11_COMPILE_FEATURES "")
> set(CMAKE_CXX14_COMPILE_FEATURES "")
>
> set(CMAKE_CXX_PLATFORM_ID "Darwin")
> set(CMAKE_CXX_SIMULATE_ID "")
> set(CMAKE_CXX_SIMULATE_VERSION “")
>
>
>
> Kind regards,
> James
>
> --
> James Turner - Senior Software Developer
> KDAB - The Qt, C++ and OpenGL Experts
>
>
>
>
-- 

Powered by www.kitware.com

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Kitware offers various services to support the CMake community. For more 
information on each offering, please visit:

CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake

Re: [CMake] 'No known features for CXX compiler' warning with custom Clang

2016-12-16 Thread James Turner 

> On 16 Dec 2016, at 15:30, Robert Maynard  wrote:
> 
> /CMakeFiles/3.7.0/CMakeCXXCompiler.cmake
> 
> The important information being what CMAKE_CXX_COMPILER_ID and
> CMAKE_CXX_COMPILER_VERSION are set too.

Here’s what I have. I note the _FEATURES variables are all empty.

set(CMAKE_CXX_COMPILER "/usr/local/bin/clang-omp++")
set(CMAKE_CXX_COMPILER_ARG1 "")
set(CMAKE_CXX_COMPILER_ID "Clang")
set(CMAKE_CXX_COMPILER_VERSION "3.5.0")
set(CMAKE_CXX_COMPILER_WRAPPER "")
set(CMAKE_CXX_STANDARD_COMPUTED_DEFAULT "98")
set(CMAKE_CXX_COMPILE_FEATURES "")
set(CMAKE_CXX98_COMPILE_FEATURES "")
set(CMAKE_CXX11_COMPILE_FEATURES "")
set(CMAKE_CXX14_COMPILE_FEATURES "")

set(CMAKE_CXX_PLATFORM_ID "Darwin")
set(CMAKE_CXX_SIMULATE_ID "")
set(CMAKE_CXX_SIMULATE_VERSION “")



Kind regards,
James

--
James Turner - Senior Software Developer
KDAB - The Qt, C++ and OpenGL Experts






smime.p7s
Description: S/MIME cryptographic signature
-- 

Powered by www.kitware.com

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Kitware offers various services to support the CMake community. For more 
information on each offering, please visit:

CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake

Re: [CMake] 'No known features for CXX compiler' warning with custom Clang

2016-12-16 Thread Robert Maynard 
I would start by looking at the how CMake identified the compiler. You
can find this information inside:

/CMakeFiles/3.7.0/CMakeCXXCompiler.cmake

The important information being what CMAKE_CXX_COMPILER_ID and
CMAKE_CXX_COMPILER_VERSION are set too.


On Fri, Dec 16, 2016 at 6:55 AM, James Turner  wrote:
> Hi,
>
> I’m seeing this error from Cmake (3.7.0) when using a custom Clang (from 
> homebrew) on Mac. Googling turns up hits from Cmake 3.0/3.1 when compiler 
> features was being added. What can I do to trace down or debug this error 
> when it occurs with a recent build of Clang?
>
> I am guessing there is some compiler-id detection which needs to be extended 
> / over-ridden for my different build of Clang.
>
> Kind regards,
> James
>
> --
> James Turner - Senior Software Developer
> KDAB - The Qt, C++ and OpenGL Experts
>
>
>
>
>
> --
>
> Powered by www.kitware.com
>
> Please keep messages on-topic and check the CMake FAQ at: 
> http://www.cmake.org/Wiki/CMake_FAQ
>
> Kitware offers various services to support the CMake community. For more 
> information on each offering, please visit:
>
> CMake Support: http://cmake.org/cmake/help/support.html
> CMake Consulting: http://cmake.org/cmake/help/consulting.html
> CMake Training Courses: http://cmake.org/cmake/help/training.html
>
> Visit other Kitware open-source projects at 
> http://www.kitware.com/opensource/opensource.html
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/cmake
-- 

Powered by www.kitware.com

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Kitware offers various services to support the CMake community. For more 
information on each offering, please visit:

CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake

[CMake] 'No known features for CXX compiler' warning with custom Clang

2016-12-16 Thread James Turner 
Hi,

I’m seeing this error from Cmake (3.7.0) when using a custom Clang (from 
homebrew) on Mac. Googling turns up hits from Cmake 3.0/3.1 when compiler 
features was being added. What can I do to trace down or debug this error when 
it occurs with a recent build of Clang?

I am guessing there is some compiler-id detection which needs to be extended / 
over-ridden for my different build of Clang.

Kind regards,
James

--
James Turner - Senior Software Developer
KDAB - The Qt, C++ and OpenGL Experts






smime.p7s
Description: S/MIME cryptographic signature
-- 

Powered by www.kitware.com

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Kitware offers various services to support the CMake community. For more 
information on each offering, please visit:

CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake