1、先看一下我已经配置好的qt项目，在资源管理器中，已经可以看到普通C/C++代码和cuda代码是分开显示的。这个是qt设置的问题，但是已经可以在一起编译执行了。
2、具体操作，修改qt项目配置文件pro，在配置后面加入如下代码，我们就实现了qt+cuda的交叉编译。# 让你的项目可以看到后缀cu的cuda代码文件OTHER_FILES += ./Bll/ImageReconstruction/Cuda/CudaFDK.cu \ ./Bll/ImageReconstruction/Cuda/CudaFDK_kernel.cu \ ./Bll/ImageReconstruction/Cuda/CudaFDK_SS.cu \ ./Bll/ImageReconstruction/Cuda/CudaFDK_SS_kernel.cu# CUDA配置，具体按照你系统环境更改CUDA_SOURCES += ./Bll/ImageReconstruction/Cuda/CudaFDK.cu \ ./Bll/ImageReconstruction/Cuda/CudaFDK_kernel.cu \ ./Bll/ImageReconstruction/Cuda/CudaFDK_SS.cu \ ./Bll/ImageReconstruction/Cuda/CudaFDK_SS_kernel.cuCUDA_SDK = "/usr/local/cuda-5.0/" # cudaSDK路径CUDA_DIR = "/usr/local/cuda-5.0/" # CUDA tookit路径SYSTEM_NAME = linux # 自己系统环境 'Win32', 'x64', or 'Win64'SYSTEM_TYPE = 32 #操作系统位数 '32' or '64',CUDA_ARCH = sm_21 # cuda架构, for example 'compute_10', 'compute_11', 'sm_10'NVCC_OPTIONS = --use_fast_math# include pathsINCLUDEPATH += $$CUDA_DIR/include# library directoriesQMAKE_LIBDIR += $$CUDA_DIR/lib/CUDA_OBJECTS_DIR = ./# The following library conflicts with something in Cuda#QMAKE_LFLAGS_RELEASE = /NODEFAULTLIB:msvcrt.lib#QMAKE_LFLAGS_DEBUG = /NODEFAULTLIB:msvcrtd.lib# Add the necessary librariesCUDA_LIBS = cudart cufft# The following makes sure all path names (which often include spaces) are put between quotation marksCUDA_INC = $$join(INCLUDEPATH,'" -I"','-I"','"')NVCC_LIBS = $$join(CUDA_LIBS,' -l','-l', '')#LIBS += $$join(CUDA_LIBS,'.so ', '', '.so')# Configuration of the Cuda compilerCONFIG(debug, debug|release) { # Debug mode cuda_d.input = CUDA_SOURCES cuda_d.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o cuda_d.commands = $$CUDA_DIR/bin/nvcc -D_DEBUG $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} cuda_d.dependency_type = TYPE_C QMAKE_EXTRA_COMPILERS += cuda_d}else { # Release mode cuda.input = CUDA_SOURCES cuda.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o cuda.commands = $$CUDA_DIR/bin/nvcc $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -O3 -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} cuda.dependency_type = TYPE_C QMAKE_EXTRA_COMPILERS += cuda}
3、将nvcc编译和qmake编译集成到一起的好处就是，软件开发人员不需要头疼两种混合编译器的配置，只需要关注程序编写即可。
