问题描述
我的CMake是这样的:
cmake_minimum_required(VERSION 2.8)
project(my_proj)
include_directories(。)
add_subdirectory(main)
add_subdirectory(resources)
find_package(OpenCV REQUIRED)
find_package(Boost REQUIRED COMPONENTS system regex program_options)
include_directories($ {Boost_INCLUDE_DIRS} )
文件(GLOB_RECURSE SRC_FILES $ {PROJECT_SOURCE_DIR} / *。cpp)
文件(GLOB_RECURSE HDR_FILES $ {PROJECT_SOURCE_DIR} / *。hpp)
add_executable $ {SRC_FILES} $ {HDR_FILES})
target_link_libraries(my_proj $ {OpenCV_LIBS})
target_link_libraries(my_proj $ {OpenCV_LIBS}
$ {Boost_PROGRAM_OPTIONS_LIBRARY}
$ {Boost_REGEX_LIBRARY}
$ {Boost_FILESYSTEM_LIBRARY}
$ {Boost_SYSTEM_LIBRARY})
我有更多的文件夹与.hpp和.cpp文件,这就是为什么我添加了文件(GLOB_RECURSE ...
语句和 include_directories 。)
。
编译所有文件后出现错误:
CMakeFiles / my_proj.dir / CMakeFiles / CompilerIdCXX / CMakeCXXCompilerId.cpp.o:在main函数中:
/ media / N / my_proj / build / CMakeFiles / CompilerIdCXX /CMakeCXXCompilerId.cpp:209:`main'的多重定义
CMakeFiles / my_proj.dir / main.cpp.o:/media/N/my_proj/main.cpp:10:先定义这里
CMakeFiles /my_proj.dir/main/solution2/sources/CRunSolution2.cpp.o:在函数`boost :: filesystem3 :: path :: codecvt()':
/ usr / include / boost / filesystem / v3 / path .hpp:377:未定义引用`boost :: filesystem3 :: path :: wchar_t_codecvt_facet()'
有没有人遇到过类似的东西?
在您的可执行文件中,只需要两个主要函数(打印出 SRC_FILES
由 MESSAGE($ {SRC_FILES})
)。一个是在 main.cpp
和一个在 CMakeCXXCompilerId.cpp
(这是一个CMake生成的文件, CXX编译器工作正常)。 GLOB_RECURSE
可能会找到并将这两个文件添加到 SRC_FILES
使用比较棘手:
您应该直接在CMakeLists.txt中列出源文件和头文件
Hi I am trying to compile a project that has only one main function, but CMake find more.
My CMake is like:
cmake_minimum_required(VERSION 2.8)
project(my_proj)
include_directories(".")
add_subdirectory(main)
add_subdirectory(resources)
find_package(OpenCV REQUIRED)
find_package(Boost REQUIRED COMPONENTS system regex program_options)
include_directories(${Boost_INCLUDE_DIRS})
file(GLOB_RECURSE SRC_FILES ${PROJECT_SOURCE_DIR}/*.cpp)
file(GLOB_RECURSE HDR_FILES ${PROJECT_SOURCE_DIR}/*.hpp)
add_executable(my_proj ${SRC_FILES} ${HDR_FILES})
target_link_libraries(my_proj ${OpenCV_LIBS})
target_link_libraries(my_proj ${OpenCV_LIBS}
${Boost_PROGRAM_OPTIONS_LIBRARY}
${Boost_REGEX_LIBRARY}
${Boost_FILESYSTEM_LIBRARY}
${Boost_SYSTEM_LIBRARY})
I have more folders with .hpp and .cpp files that is why I have added file(GLOB_RECURSE...
statements and also include_directories(".")
.
I get an error after it compiles all files that says:
CMakeFiles/my_proj.dir/CMakeFiles/CompilerIdCXX/CMakeCXXCompilerId.cpp.o: In function `main':
/media/N/my_proj/build/CMakeFiles/CompilerIdCXX/CMakeCXXCompilerId.cpp:209: multiple definition of `main'
CMakeFiles/my_proj.dir/main.cpp.o:/media/N/my_proj/main.cpp:10: first defined here
CMakeFiles/my_proj.dir/main/solution2/sources/CRunSolution2.cpp.o: In function `boost::filesystem3::path::codecvt()':
/usr/include/boost/filesystem/v3/path.hpp:377: undefined reference to `boost::filesystem3::path::wchar_t_codecvt_facet()'
Has anyone met something like that? if yes, how to fix it?
In your executable you simply have 2 main functions (print out SRC_FILES
by MESSAGE(${SRC_FILES})
). One is in main.cpp
and one in CMakeCXXCompilerId.cpp
(which is a file that CMake generates to test if your CXX compiler works correctly). The GLOB_RECURSE
probably finds and adds both of these files to SRC_FILES
Using FILE(GLOB ...) is tricky:
You should list your source and header files in your CMakeLists.txt directly
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