I don't have any other suggestions. In general I recommend the script
approach or using enable_language(CUDA). The enable_language approach
should work, so I am curious what other issues you are seeing.

On Tue, Apr 16, 2019 at 2:24 PM Dustyn Blasig <dus...@blasig.us> wrote:
>
> Thx for the info.
>
> Since CXX and CUDA are defined together in the project() command, I don't see 
> a way to inject code to use the CXX compiler if no CUDAHOSTCXX or 
> CMAKE_CUDA_HOST_COMPILER is given without replicating the CXX search. I tried 
> moving CUDA out to an enable_language(CUDA) call instead so I could set those 
> variables between project(foo LANGUAGES CXX) and enable_language(CUDA), but 
> I'm seeing other issues with that approach.
>
> Any other suggestions? If not, we'll just wrap our cmake invocation in a 
> script to help setup the environment properly for now.
>
> Thx!
>
> On Tue, Apr 16, 2019 at 1:10 PM Robert Maynard <robert.mayn...@kitware.com> 
> wrote:
>>
>> The default implementation is to defer to  CUDA for selecting what
>> ever host compiler it would like. To make sure that CMake uses the
>> same CXX and CUDACXX compiler you will need to explicitly state that
>> either through the CUDAHOSTCXX env variable (
>> https://cmake.org/cmake/help/v3.12/envvar/CUDAHOSTCXX.html ) or with
>> CMAKE_CUDA_HOST_COMPILER on the initial configuration of a project.
-- 

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