[CMake] how do you allow CMAKE_CUDA_COMPILER to be optional via project LANGUAGE?

[Quang Ha]

It works perfectly - thanks!

QT

On Tue, 28 Aug 2018 at 12:37, Robert Maynard <robert.maynard at kitware.com>
wrote:

> The way Eric suggest with check_language is what I use when I want to
> conditionally support CUDA.
>
> On Tue, Aug 28, 2018 at 10:28 AM Eric Noulard <eric.noulard at gmail.com>
> wrote:
>
>>
>>
>> Le mar. 28 août 2018 à 19:07, Quang Ha <quang.t.ha.20 at gmail.com> a
>> écrit :
>>
>>> Hi all,
>>>
>>> So this question is again about project(foo LANGUAGES CXX CUDA). Is it
>>> possible to switch off CUDA if Cmake couldn't find CUDA compiler? I.e.
>>> something along the line:
>>>
>>
>> May be you can only:
>>
>>   project(foo LANGUAGES CXX)
>>
>> then
>>
>> include(CheckLanguage)
>> check_language(CUDA)
>> if(CMAKE_CUDA_COMPILER)
>>   enable_language(CUDA)
>> else()
>>   message(STATUS "No CUDA compiler found")
>> endif()
>>
>> see doc:
>> https://cmake.org/cmake/help/latest/module/CheckLanguage.html
>>
>>
>> Eric
>>
>>
>>> if (CUDA_FOUND)
>>>   set_language_to_CUDA_and_CXX
>>> else(CUDA_FOUND)
>>>   set_language_to_CXX_only
>>> endif(CUDA_FOUND)
>>>
>>> The main reason is I don't want CMake to fail when CUDA compiler isn't
>>> available. Rather, it should continue to compile the source files using CPP
>>> compilers instead.
>>>
>>> Thanks,
>>> Quang
>>> --
>>>
>>> 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:
>>> https://cmake.org/mailman/listinfo/cmake
>>>
>>
>>
>> --
>> Eric
>> --
>>
>> 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:
>> https://cmake.org/mailman/listinfo/cmake
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://cmake.org/pipermail/cmake/attachments/20180828/57a91e28/attachment-0001.html>