Seeing symbols in emcc generated object files.

[Dale Pennington]

Folks,

I am operating in a Linux environment with Qt 6.10 for WebAssembly using cmake to build.

The issue is if I place all the files in one directory it builds, but if I split them up to subdirectories (we use forms, inc, and src) I get a link error of vtable not found for the window class.

What I want to do it dump the symbol table on the .o file to see what the difference is in the the .o file for the flat version vs the .o file in the tree version. Is there a tool to do that ?

Thanks

Dale Pennington

[Sam Clegg]

You can use all of the standard llvm tools for inspecting object files.   e.g. `llvm-nm`, `llvm-objdump`, etc. 

cheers,

sam

 

Thanks

Dale Pennington

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[Dale Pennington]

Thanks for that. Now I have a further quandry. The generated .o's are identical (used diff for compare) and the only difference in the link line is that the paths are slightly different due to flat vs tree. And both .o

s show the vtable as undefined. But the flat link while the tree has  a link error on the undefined vtable. I would think it has to be something in the link process but cannot see anything special. Anyone have an idea ?

Thanks

Dale Pennington

[Dale Pennington]

I have figured out the issue is with the AUTOMOC tool that Qt provides and CMake uses that is the problem, nothing in emscripten. 

Dale