One of my preferred developer tools is a web called Compiler Explorer. The tool itself is excellent and useful when trying to optimize your code. The author of the tool describes it in the Github repository as:
Compiler Explorer is an interactive compiler. The left-hand pane shows editable C/C++/Rust/Go/D/Haskell code. The right, the assembly output of having compiled the code with a given compiler and settings. Multiple compilers are supported, and the UI layout is configurable (the Golden Layout library is used for this). There is also an ispc compiler for a C variant with extensions for SPMD.
The main problem I found with the tool is, it does not allow to write Qt code. I need to remove all the Qt includes, modify and remove a lot of code...
So I decided to modify the tool to be able to find the Qt headers. To do that first of all, we need to clone the source code: