Building Sourcetrail

```bash
# Boost is installed in /usr/local with `b2 install`
# llvm-project is built

cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DQt5_DIR=/Users/tiendo/Qt_5_12_3/5.12.3/clang_64/lib/cmake/Qt5 \
-DClang_DIR=/Users/tiendo/GitHub/clang-llvm/build/lib/cmake/clang -DBUILD_CXX_LANGUAGE_PACKAGE=ON ..
cmake --build .
```