CMAKE_SYSTEM_NAME

CMAKE_SYSTEM_NAME是一个变量，用于指示CMake所在的操作系统的名称。它可以是以下值之一：
- "Linux"
- "Darwin" (macOS)
- "Windows"
- "Android"
- "iOS"
- "FreeBSD"
- "OpenBSD"
- "NetBSD"
- "SunOS"
- "AIX"
这个变量可以用来在CMake脚本中根据不同的操作系统执行不同的操作。

相关问题

Tell CMake where to find the compiler by setting either the environment variable "CUDACXX" or the CMake cache entry CMAKE_CUDA_COMPILER to the full path to the compiler, or to the compiler name if it is in the PATH.

This message is indicating that in order to compile a CUDA (Nvidia GPU programming) project using CMake (a cross-platform build system), you need to specify the location of the CUDA compiler. You can either set the environment variable "CUDACXX" or the CMake cache entry "CMAKE_CUDA_COMPILER" to the path of the compiler.

If the compiler is in your PATH, you can simply set the "CMAKE_CUDA_COMPILER" to the name of the compiler, otherwise you need to specify the full path to the compiler executable.

For example, if the CUDA compiler is located at "/usr/local/cuda/bin/nvcc", you can set the "CMAKE_CUDA_COMPILER" as follows:

set(CMAKE_CUDA_COMPILER "/usr/local/cuda/bin/nvcc")

Alternatively, you can set the "CUDACXX" environment variable:

export CUDACXX=/usr/local/cuda/bin/nvcc

ament_cmake target_include_directories

target_include_directories是CMake中的一个命令，用于指定目标的包含目录。它允许你为特定的目标（如可执行文件或库）指定需要包含的头文件目录。通过这个命令，你可以告诉CMake在构建过程中将这些目录添加到编译器的搜索路径中。

命令的语法如下：

target_include_directories(target_name [SYSTEM] [BEFORE]
    <INTERFACE|PUBLIC|PRIVATE> [items1...]
    [<INTERFACE|PUBLIC|PRIVATE> [items2...] ...])

参数说明：
- target_name：指定目标的名称。
- SYSTEM：可选参数，表示这些目录是系统级别的头文件目录。
- BEFORE：可选参数，表示将这些目录添加到搜索路径的最前面。
- INTERFACE/PUBLIC/PRIVATE：指定目标的属性。INTERFACE表示该目标只会影响链接到它的目标；PUBLIC表示该目标会影响链接到它的目标以及该目标自身；PRIVATE表示该目标只会影响该目标自身。
- items：指定需要包含的头文件目录。

示例用法：

target_include_directories(my_target PUBLIC include)
target_include_directories(my_target PRIVATE src)
target_include_directories(my_target SYSTEM BEFORE third_party)

以上示例中，my_target是一个目标名称，通过target_include_directories命令指定了my_target需要包含的头文件目录。其中，include目录是公共目录，src目录是私有目录，third_party目录是系统级别的头文件目录，并将其添加到搜索路径的最前面。

希望这个解答能够帮到你！如果你还有其他问题，请继续提问。