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nelhage / llama

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Use `-fdebug-prefix-map=old=new` when compiling with gcc/clang

nvartolomei opened this issue · comments

commented

Currently, symbols point to temporary folders as created on lambda 0. /tmp/llama.565826462/_root/home/nv/[...] this makes stacktraces quite ugly.

Think this can be fixed with passing -fdebug-prefix-map.

https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html

-fdebug-prefix-map=old=new
When compiling files residing in directory old, record debugging information describing them as if the files resided in directory new instead. This can be used to replace a build-time path with an install-time path in the debug info. It can also be used to change an absolute path to a relative path by using . for new. This can give more reproducible builds, which are location independent, but may require an extra command to tell GDB where to find the source files.
commented

Great suggestion! Can you test whether #55 helps for you? There's a bit of complexity as mentioned in the issue, but it should get most of the way there.