cmake INTERFACE
时间: 2023-07-08 20:25:11 浏览: 59
在CMake中,`INTERFACE`是一种用于定义库或目标的属性的特殊关键字。当你定义一个库或目标时,你可以使用`target_include_directories`、`target_link_libraries`等命令来指定它的属性,而`INTERFACE`属性则表示该库或目标的属性将被用于依赖该库或目标的其他目标,而不是该库或目标本身。
例如,假设你定义了一个名为`mylib`的库,并希望将其作为其他项目的依赖项。你可以使用以下代码定义`mylib`的`INTERFACE`属性:
```
target_include_directories(mylib INTERFACE include)
target_link_libraries(mylib INTERFACE pthread)
```
这将使`mylib`的`include`目录成为其`INTERFACE`属性的一部分,以便其他项目可以使用`mylib`库的头文件,而不必知道实际文件路径。另外,`mylib`的`INTERFACE`属性还包括了`pthread`库的链接,以便其他项目可以使用`mylib`库的功能而无需手动链接`pthread`库。
需要注意的是,`INTERFACE`属性只能用于库或目标,不能用于变量或函数等其他类型的定义。
相关问题
cmake BUILD_INTERFACE
CMake's `BUILD_INTERFACE` is a generator expression that is used to specify build-time dependencies or paths. It allows you to control the behavior of targets during the build process.
When using `BUILD_INTERFACE`, you can specify paths or include directories that are only relevant during the build phase of your project. These paths or directories will not be propagated to consuming projects when they link against your target.
For example, if you have a library target and you want to include some header files only during the build process, you can use `BUILD_INTERFACE` in conjunction with `target_include_directories()`. This ensures that the headers are only included when building your target, but not when using your library as a dependency.
Here's an example:
```cmake
target_include_directories(my_library
PUBLIC
$<INSTALL_INTERFACE:include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
)
```
In this example, `${CMAKE_CURRENT_SOURCE_DIR}/include` is included only during the build process, while `include` is included when using the installed library.
Note that `BUILD_INTERFACE` is evaluated during the configuration step, so any paths or dependencies specified with it should be available at configure time.
cmake 中 BUILD_INTERFACE
在CMake中,BUILD_INTERFACE是用于指定构建接口的关键字。它用于指定在构建目标时所使用的头文件和链接库等接口文件。
当使用BUILD_INTERFACE关键字时,CMake会将相关的头文件和链接库(INTERFACE_INCLUDE_DIRECTORIES、INTERFACE_LINK_LIBRARIES等)添加到构建目标的接口属性中。这意味着这些接口文件只在构建目标时可用,而不会被导出到安装目录中。
在实际使用中,你可以通过设置BUILD_INTERFACE来避免将接口文件安装到目标文件夹,从而提供更好的封装和隔离性。这对于库的开发者来说尤为重要,因为它们可以控制哪些文件在使用他们的库时可见。