Question

我有以下cmake文件：

cmake_minimum_required(VERSION 3.5)
project(myapp LANGUAGES C CXX)
find_package(CUDA)
find_library(LIB_LOCATION csv json-c)

INCLUDE(FindCUDA)

list(APPEND CMAKE_PREFIX_PATH /usr/lib /usr/local/lib /usr/local/cuda/lib64)

cuda_add_executable(myapp src/myapp.cu src/ingest/tiles.cpp src/ingest/listings.cpp src/tree.cpp)

target_link_libraries(myapp csv json-c m SFCGAL pthread)

当我运行命令时，它返回：

makefile:63: recipe for target 'myapp' failed
/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.c:576: multiple definition of `main'
./src/myapp.o:/home/user/cuda-workspace/myapp/Default/../src/myapp.cu:83: first defined here
./CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.c:295: multiple definition of `info_compiler'
./CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.cpp:280: first defined here
./CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.c:542: multiple definition of `info_platform'
./CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.cpp:527: first defined here
./CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.c:543: multiple definition of `info_arch'
./CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.cpp:528: first defined here
./CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdC/CMakeCCompilerId.c:561: multiple definition of `info_language_dialect_default'
./CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.o:/home/user/cuda-workspace/myapp/Default/../CMakeFiles/3.10.2/CompilerIdCXX/CMakeCXXCompilerId.cpp:539: first defined here
collect2: error: ld returned 1 exit status
make: *** [myapp] Error 1

唯一的main文件在myapp.cu中是如何实现的？我该如何解决？

更新

在此之后仍然迷失了，而不是专注于代码:(

我做了一个更改，将所有文件（.cu，.c，.cpp，.h）列在这样的变量中：

SET(SRC_FILES
    src/myapp.cu 
    src/math_ext.h
    src/tree_alloc.cu
    ... etc)

CUDA_ADD_EXECUTABLE(myapp ${SRC_FILES})

MESSAGE (DEBUG ${SRC_FILES})

该消息返回正确编译的文件（当然），但在编译期间仍然存在相同的问题。在此链接中（如建议的那样）cmake finds more than one main function可以选择尝试分离构建。所以我甚至添加了：

install (DIRECTORY "build" DESTINATION "." DIRECTORY_PERMISSIONS 
    OWNER_WRITE OWNER_READ OWNER_EXECUTE
    GROUP_WRITE GROUP_READ GROUP_EXECUTE
    WORLD_WRITE WORLD_READ WORLD_EXECUTE)

或替代

FILE (MAKE_DIRECTORY build)

并运行命令：

rm -fR CMakeFiles/; cmake --clean-first --build .

但仍然是同样的问题。

更新2

我认为它的原因是，它试图在Nsight IDE中运行它。

必须是其中的一些设置。

如何修复CMake配置以创建没有多个主要定义错误的Makefile？

0 个答案: