target_include_directories(mylib mylib_shared PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)是否正确
时间: 2024-05-17 14:19:09 浏览: 122
是的,`target_include_directories()` 函数的调用看起来是正确的。
假设 `mylib` 和 `mylib_shared` 是两个 CMake 目标(比如库或可执行文件),那么上述代码的意思是将 `${CMAKE_CURRENT_SOURCE_DIR}/include` 目录添加到这两个目标的头文件搜索路径中。其中,`PUBLIC` 参数表示这些路径对这两个目标的依赖项可见,即其他依赖于这两个目标的目标也可以使用这些路径。
需要注意的是,`target_include_directories()` 函数必须在 `add_library()` 或 `add_executable()` 函数之后调用,且不能在 `target_link_libraries()` 函数之后调用。此外,该函数还可以用于添加系统路径和接口路径,具体使用方法可以参考 CMake 的官方文档。
相关问题
cmake_minimum_required(VERSION 3.16) # 声明该项目的名称和版本号 project(MyLib VERSION 1.0) # 添加库代码文件到该库 add_library(mylib STATIC src/header.cpp) target_include_directories(mylib INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include> $<INSTALL_INTERFACE:include> ) add_library(mylib_shared SHARED src/header.cpp) target_include_directories(mylib_shared INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include> $<INSTALL_INTERFACE:include> ) # include_directories(include) # 指定install路径,以便于其他项目找到该库 install(TARGETS mylib mylib_shared EXPORT MyLibTargets ARCHIVE DESTINATION lib LIBRARY DESTINATION lib RUNTIME DESTINATION bin) install(FILES include/header.h DESTINATION include) # 生成MyLibConfig.cmake文件 include(CMakePackageConfigHelpers) write_basic_package_version_file( "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfigVersion.cmake" VERSION ${MyLib_VERSION} COMPATIBILITY AnyNewerVersion ) configure_package_config_file( "${CMAKE_CURRENT_SOURCE_DIR}/MyLibConfig.cmake.in" "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfig.cmake" INSTALL_DESTINATION cmake ) install( EXPORT MyLibTargets NAMESPACE MyLib:: DESTINATION cmake ) # export(EXPORT MyLibTargets # NAMESPACE MyLib:: # FILE MyLibTargets.cmake) # install(FILES ${CMAKE_CURRENT_BINARY_DIR}/MyLibTargets.cmake DESTINATION cmake) install( FILES "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfig.cmake" "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfigVersion.cmake" DESTINATION cmake )为什么执行时,提醒/home/czl/cmake_lib/src/header.cpp:1:10: fatal error: header.h: 没有那个文件或目录
在你的 `CMakeLists.txt` 文件中,你已经将 `include/header.h` 安装到了 `include` 目录中,但是在 `add_library` 命令中没有将该目录添加到编译器的 include 路径中,所以编译器无法找到该头文件。
你可以将 `target_include_directories` 命令添加到 `add_library` 命令中,这样就可以将 `include` 目录添加到编译器的 include 路径中了。修改后的代码如下所示:
```cmake
cmake_minimum_required(VERSION 3.16)
project(MyLib VERSION 1.0)
# 添加库代码文件到该库
add_library(mylib STATIC src/header.cpp)
target_include_directories(mylib
PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include>
)
add_library(mylib_shared SHARED src/header.cpp)
target_include_directories(mylib_shared
PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include>
)
# 指定install路径,以便于其他项目找到该库
install(TARGETS mylib mylib_shared
EXPORT MyLibTargets
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin)
install(FILES include/header.h DESTINATION include)
# 生成MyLibConfig.cmake文件
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
"${CMAKE_CURRENT_BINARY_DIR}/MyLibConfigVersion.cmake"
VERSION ${MyLib_VERSION}
COMPATIBILITY AnyNewerVersion
)
configure_package_config_file(
"${CMAKE_CURRENT_SOURCE_DIR}/MyLibConfig.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/MyLibConfig.cmake"
INSTALL_DESTINATION cmake
)
install(
EXPORT MyLibTargets
NAMESPACE MyLib::
DESTINATION cmake
)
install(
FILES
"${CMAKE_CURRENT_BINARY_DIR}/MyLibConfig.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/MyLibConfigVersion.cmake"
DESTINATION cmake
)
```
注意,在这里,我们使用了 `PUBLIC` 修饰符,将 include 路径添加到了 `mylib` 和 `mylib_shared` 目标的 include 路径中,这样在编译 `mylib` 和 `mylib_shared` 时都可以找到 `include/header.h` 头文件。
同一目录下cmakelist.txt文件为cmake_minimum_required(VERSION 3.16) # 声明该项目的名称和版本号 project(MyLib VERSION 1.0) # 添加库代码文件到该库 add_library(mylib STATIC src/header.cpp) add_library(mylib_shared SHARED src/header.cpp) include_directories(include) # set(PUBLIC_HEADER) # 指定install路径,以便于其他项目找到该库 install(TARGETS mylib mylib_shared EXPORT MyLibConfig ARCHIVE DESTINATION lib LIBRARY DESTINATION lib RUNTIME DESTINATION bin INCLUDES DESTINATION include) install(FILES include/header.h DESTINATION include) # 生成MyLibConfig.cmake文件 include(CMakePackageConfigHelpers) write_basic_package_version_file( "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfigVersion.cmake" VERSION ${MyLib_VERSION} COMPATIBILITY AnyNewerVersion ) configure_package_config_file( "${CMAKE_CURRENT_SOURCE_DIR}/MyLibConfig.cmake.in" "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfig.cmake" INSTALL_DESTINATION cmake ) install( FILES "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfig.cmake" "${CMAKE_CURRENT_BINARY_DIR}/MyLibConfigVersion.cmake" DESTINATION cmake ),而MyLibConfig.cmake.in文件中的代码为# 指定该项目的名称和版本号 set(MyLib_VERSION @MyLib_VERSION@) set(MyLib_INCLUDE_DIRS "@CMAKE_INSTALL_PREFIX@/include") set(MyLib_LIBRARIES "@CMAKE_INSTALL_PREFIX@/lib/libmylib.a") set(MyLib_LIBRARIES_SHARED "@CMAKE_INSTALL_PREFIX@/lib/libmylib_shared.so") # 导入MyLib的目标 include("${CMAKE_CURRENT_LIST_DIR}/MyLibTargets.cmake"),而MyLibTargets.cmake文件中的代码为# 导入mylib静态库 add_library(MyLib::mylib STATIC IMPORTED) set_target_properties(MyLib::mylib PROPERTIES IMPORTED_LOCATION "@CMAKE_INSTALL_PREFIX@/lib/libmylib.a" ) # 导入mylib_shared动态库 add_library(MyLib::mylib_shared SHARED IMPORTED) set_target_properties(MyLib::mylib_shared PROPERTIES IMPORTED_LOCATION "@CMAKE_INSTALL_PREFIX@/lib/libmylib_shared.so" ) # 导出MyLib的目标 install( EXPORT MyLibConfig NAMESPACE MyLib:: DESTINATION cmake ),以上代码哪里存在错误,为什么不能正确导出MyLibConfig.cmake文件
代码中并没有明显的错误。可能导致无法正确导出MyLibConfig.cmake文件的原因是,你可能没有正确设置`MyLib_VERSION`变量。
在你的CMakeLists.txt文件中,你声明了项目的版本号为1.0,但是在MyLibConfig.cmake.in文件中,你使用`MyLib_VERSION`变量来表示版本号。如果你没有设置`MyLib_VERSION`变量,或者设置它的方式不正确,CMake将无法正确解析变量,并生成MyLibConfig.cmake文件。
你可以尝试在CMakeLists.txt文件中添加以下代码来设置`MyLib_VERSION`变量:
```
# 指定该项目的名称和版本号
set(MyLib_VERSION ${PROJECT_VERSION})
```
这将使用`PROJECT_VERSION`变量的值来设置`MyLib_VERSION`变量,从而确保版本号在整个项目中保持一致。