target_include_directories(mylib mylib_shared PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)是否正确
时间: 2024-05-17 22:19:09 浏览: 12
是的,`target_include_directories()` 函数的调用看起来是正确的。
假设 `mylib` 和 `mylib_shared` 是两个 CMake 目标(比如库或可执行文件),那么上述代码的意思是将 `${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
在cmake中执行target_include_directories(mylib PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include ) target_include_directories(mylib_shared PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include )提醒正确,执行target_include_directories(mylib mylib_shared PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include )时提醒错误 target_include_directories called with invalid arguments
执行 `target_include_directories(mylib mylib_shared PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)` 时,会出现 "target_include_directories called with invalid arguments" 的错误提示,这是因为 `target_include_directories()` 函数不支持一次为多个目标添加头文件搜索路径。
如果想要为多个目标设置相同的头文件搜索路径,需要分别为每个目标调用 `target_include_directories()` 函数。例如,下面的代码将 `${CMAKE_CURRENT_SOURCE_DIR}/include` 目录添加到 `mylib` 和 `mylib_shared` 两个目标的头文件搜索路径中:
```
target_include_directories(mylib
PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/include
)
target_include_directories(mylib_shared
PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/include
)
```
这样,这两个目标的依赖项就可以使用这些路径了。
需要注意的是,如果要使用不同的可见性(即 `INTERFACE`、`PUBLIC` 或 `PRIVATE`)为不同的目标添加头文件路径,需要为每个目标分别调用 `target_include_directories()` 函数,并指定相应的可见性。例如:
```
target_include_directories(mylib
PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/include
)
target_include_directories(mylib_shared
INTERFACE
/usr/local/include
)
```
这样,`mylib` 目标的头文件路径对其依赖项可见,而 `mylib_shared` 目标的头文件路径对其依赖项不可见,但对其接口(即 `INTERFACE`)可见。
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。
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