diff options
| -rw-r--r-- | Help/envvar/CUDAHOSTCXX.rst | 4 | ||||
| -rw-r--r-- | Modules/FindCUDA.cmake | 6 |
2 files changed, 9 insertions, 1 deletions
diff --git a/Help/envvar/CUDAHOSTCXX.rst b/Help/envvar/CUDAHOSTCXX.rst index f0f94f6..bb786ca 100644 --- a/Help/envvar/CUDAHOSTCXX.rst +++ b/Help/envvar/CUDAHOSTCXX.rst @@ -7,3 +7,7 @@ determine ``CUDA`` host compiler, after which the value for ``CUDAHOSTCXX`` is stored in the cache as :variable:`CMAKE_CUDA_HOST_COMPILER`. For any configuration run (including the first), the environment variable will be ignored if the :variable:`CMAKE_CUDA_HOST_COMPILER` variable is defined. + +This environment variable is primarily meant for use with projects that +enable ``CUDA`` as a first-class language. The :module:`FindCUDA` +module will also use it to initialize its ``CUDA_HOST_COMPILER`` setting. diff --git a/Modules/FindCUDA.cmake b/Modules/FindCUDA.cmake index 1650e55..686e2e7 100644 --- a/Modules/FindCUDA.cmake +++ b/Modules/FindCUDA.cmake @@ -105,6 +105,8 @@ # the host compiler is constructed with one or more visual studio macros # such as $(VCInstallDir), that expands out to the path when # the command is run from within VS. +# If the CUDAHOSTCXX environment variable is set it will +# be used as the default. # # CUDA_NVCC_FLAGS # CUDA_NVCC_FLAGS_<CONFIG> @@ -527,7 +529,9 @@ option(CUDA_HOST_COMPILATION_CPP "Generated file extension" ON) # Extra user settable flags cmake_initialize_per_config_variable(CUDA_NVCC_FLAGS "Semi-colon delimit multiple arguments.") -if(CMAKE_GENERATOR MATCHES "Visual Studio") +if(DEFINED ENV{CUDAHOSTCXX}) + set(CUDA_HOST_COMPILER "$ENV{CUDAHOSTCXX}" CACHE FILEPATH "Host side compiler used by NVCC") +elseif(CMAKE_GENERATOR MATCHES "Visual Studio") set(_CUDA_MSVC_HOST_COMPILER "$(VCInstallDir)Tools/MSVC/$(VCToolsVersion)/bin/Host$(Platform)/$(PlatformTarget)") if(MSVC_VERSION LESS 1910) set(_CUDA_MSVC_HOST_COMPILER "$(VCInstallDir)bin") |