与CMakeLists链接：ld找不到库(Linking with CMakeLists: ld cannot find library)

与CMakeLists链接：ld找不到库(Linking with CMakeLists: ld cannot find library)

我有一个CMakeLists.txt文件，包含以下内容：

target_link_libraries(${PROJECT_NAME} OpenNI2)

当我运行cmake ，我没有收到任何错误。 但是当我运行make ，我收到以下错误：

/usr/bin/ld: cannot find -lOpenNI2

但是，我的构建目录中有一个名为libOpenNI2.so的文件。 那么为什么不能找到这个呢？ 我以为build目录是在target_link_libraries的搜索路径上？

谢谢！

I have a CMakeLists.txt file, with the following:

target_link_libraries(${PROJECT_NAME} OpenNI2)

When I run cmake, I receive no errors. But when I run make, I receive the following error:

/usr/bin/ld: cannot find -lOpenNI2

However, I have a file called libOpenNI2.so in my build directory. So why can ld not find this? I thought that the build directory was on the search path for target_link_libraries?

Thanks!

最满意答案

这是因为在链接时，链接器不会查看当前目录，而只会查找一组预定义目录。

您需要告诉CMake库的位置，例如，通过在target_link_library命令中提供库的完整路径，或将其添加为导入的库 。

That's because when linking, the linker doesn't look in the current directory but only in a set of predefined directories.

You need to tell CMake where the library is, for example by giving the full path to the library in the target_link_library command, or adding it as an imported library.