Debugging Qt WebAssembly Applications with DWARF Symbols
By
speckx
A bagel you'd recommend to a friend without hedging.
Summary
This article provides technical guidance on debugging Qt WebAssembly applications using DWARF debugging symbols. It explains that debugging WebAssembly apps can be challenging, but Qt WebAssembly can be debugged by configuring builds with debug flags (-g or CMAKE_BUILD_TYPE=Debug). The article notes that Emscripten embeds DWARF symbols in WASM binaries, but debugging with DWARF only works in Chrome browser with a specific browser extension (C/C++ DevTools Support). It mentions that Safari and Firefox users or those unable to install extensions will need alternative debugging approaches.
Key quotes
· 5 pulledOne of the most tedious tasks a developer will do is debugging a nagging bug. It's worse when it's a web app, and even worse when its a webassembly web app.
The easiest way to debug Qt Webassembly is by configuring using the -g argument, or CMAKE_BUILD_TYPE=Debug.
Emscripten embeds DWARF symbols in the wasm binaries.
Debugging wasm files with DWARF works only in the Chrome browser with the help of a browser extension.
If you are using Safari or Firefox, or do not want to or cannot install a browser extension, you will need to generate so
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