GPU: Support virtual and real architectures in RTC

Author: davidrohr

GPU/GPUTracking/Base/cuda/CMakeLists.txt

@@ -41,9 +41,11 @@ set(GPU_RTC_FLAGS "${CMAKE_CUDA_FLAGS} ${CMAKE_CUDA_FLAGS_${CMAKE_BUILD_TYPE_UPP
 set(GPU_RTC_FLAGS_ARCH "")
 if(CUDA_COMPUTETARGET)
     foreach(CUDA_ARCH ${CUDA_COMPUTETARGET})
-        set(GPU_RTC_FLAGS_ARCH "${GPU_RTC_FLAGS_ARCH} -gencode arch=compute_${CUDA_ARCH},code=sm_${CUDA_ARCH}")
+        string(REGEX REPLACE "-.*$" "" CUDA_ARCH_STRIPPED "${CUDA_ARCH}")
+        set(GPU_RTC_FLAGS_ARCH "${GPU_RTC_FLAGS_ARCH} -gencode arch=compute_${CUDA_ARCH_STRIPPED},code=sm_${CUDA_ARCH_STRIPPED}")
     endforeach()
     list (GET CUDA_COMPUTETARGET 0 RTC_CUDA_ARCH)
+    string(REGEX REPLACE "-.*$" "" RTC_CUDA_ARCH "${RTC_CUDA_ARCH}")
     set(RTC_CUDA_ARCH "${RTC_CUDA_ARCH}0")
 else()
     set(RTC_CUDA_ARCH "750")