CMake找不到库

Question

I have a library called Kinova.API.CommLayerUbuntu.so which I want to link against with cmake. So, in my CMakeLists.txt file, I have the line:

target_link_libraries(demo ~/Libraries/Kinova.API.CommLayerUbuntu.so)

However, during compilation, I receive the error:

cannot find -lKinova.API.CommLayerUbuntu

This baffles me because I am telling cmake to look for Kinova.API.CommLayerUbuntu.so , not for -lKinova.API.CommLayerUbuntu . Please could somebody explain what is going on?

In verbose mode, the cmake output gives the following:

Linking CXX executable demo
/usr/bin/cmake -E cmake_link_script CMakeFiles/demo.dir/link.txt --verbose=1
/usr/bin/c++       CMakeFiles/demo.dir/demo.cpp.o  -o demo  -L/home/karnivaurus/Libraries -rdynamic -lKinova.API.CommLayerUbuntu -Wl,-rpath,/home/karnivaurus/Libraries 
/usr/bin/ld: cannot find -lKinova.API.CommLayerUbuntu

Answer 1

The -l is just the flag used to tell the compiler to link a library. Your library name is nonstandard. The compiler will remove the -l and prepend lib to the string you use, and look for a file called libKinova.API.CommLayerUbuntu.so .

This looks like an issue with the distribution of this API. You can try working around it by creating a symbolic link from libKinova.API.CommLayerUbuntu.so to Kinova.API.CommLayerUbuntu.so .