How to develop shared library in KDevelop?

Question

I want to develop shared library in KDevelop. But i don't see any template for library.

I guess i have to create project from c++ template and edit CMake files in both projects. Unfortunately i have got no experience with library development with CMake, also i want good integration with KDevelop - automatic build of library when i build/run project which uses that library.

Answer 1

To create a library use the add_library command:

add_library(<name> [STATIC | SHARED | MODULE]
          [EXCLUDE_FROM_ALL]
          source1 source2 ... sourceN)

For example:

add_library(mylib SHARED
    a.h
    a.cpp
    b.h
    b.cpp)

Would create a shared library from the four files listed.

If your program (created with add_executable) uses the library, when you specify the link with target_link_libraries, CMake will add the dependency, so that if you changed a.cpp the library mylib would be rebuilt and your application would be re-linked.

For example

add_executable(myprog
    main.cpp)

target_link_libraries(myprog
    mylib)

---

Edit:

When your library and project are in different folders, you can use add_subdirectory.

Create a CMakeList.txt in each directory, in the library folder use add_library in the application, use add_program and target_link_libraries.

In the parent folder use add_subdirectory, add the library folder first, then the program folder. This will make the library available to the application. Then run cmake against the parent CMakeList.