How make qt for wasm generate source map file using CMake?

[Sauntor]

I tested with Qt 6.5.3/6.7.2 (installed via Qt Online Installer) on linux, but none generates the source map for my c++ code.
😭 Help!

[Paul Colby]

Hi @Sauntor, I've never used a source map file, so can't validate, but I added this to a demo Qt project's CMakeLists.txt file:

if(EMSCRIPTEN)
    message(STATUS "This is an Emscripten build; adding source-map options.")
    add_compile_options(-gsource-map)
    add_link_options(-gsource-map)
endif()

An it resulted in a corresponding <project-name>.wasm.map file being produced when building with a Qt 6.8.0 for WebAssembly (from the Online Installer).

Cheers.

[Sauntor]

@Paul-Colby Thanks! It works, but it's still unable to debug the c++ code in the browser's devetools console, it seems the source map file does not work correctly for .wasm, all variables still stays in a format like var0, var1,...😂
C/C++ DevTools Support extension not works too