4.6 Clang plugin project
The goal of the test project is to create a clang plugin that will estimate class complexity. Specifically, a class is deemed complex if the number of its methods exceeds a certain threshold. We will leverage all the knowledge we have acquired thus far for this project. This will include the use of a recursive visitor and Clang diagnostics. Additionally, we will create a LIT test for our project. Developing the plugin will necessitate a unique build configuration for LLVM, which will be our initial step.
4.6.1 Environment setup
The plugin will be created as a shared object, and our LLVM installation should be built with support for shared libraries (see Section 1.3.1, Configuration with CMake):
cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=../install -DLLVM_TARGETS_TO_BUILD="X86" -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_USE_SPLIT_DWARF=ON -DBUILD_SHARED_LIBS=ON ../llvm
Figure 4.31: CMake configuration used for...
