Replace absolute paths from __FILE__ with relative ones just using …sed

[kkysen]

Replace absolute paths from __FILE__ with relative ones just using …sed.

Note that the existing rust transpilation used relative paths (I'm not sure how it was implemented), but make lighttpd makes a ./build/lighttpd that embeds the absolute paths.

[kkysen]

@rinon, did you have a better way of doing this when you did the initial transpilation, as relative paths are used there.

[rinon]

I don't think I did anything special, the command I used is documented in 0db8475. It's very possible I used cmake to build the compile_commands.json? Maybe try using -ffile-prefix-map or friends in the C compile commands? I really don't recall doing anything special...

[rinon]

But probably a better question, why do we need this?

[aneksteind]

@rinon I did not want lighttpd to crash in dynamic analysis for the "wrong" reason, e.g. if a path did not exist, so I asked @kkysen to create something to address that possibility

[kkysen]

I don't think I did anything special, the command I used is documented in 0db8475. It's very possible I used cmake to build the compile_commands.json? Maybe try using -ffile-prefix-map or friends in the C compile commands? I really don't recall doing anything special...

It's probably absolute paths used in the compile command. I know clang has bugs related to relative paths in compilation databases, so I tried to avoid any, but maybe they're fine in certain cases, so I can check.

I still don't think that lighttpd ever uses these paths as actual paths, but only prints then in log and error messages. It's a simple fix to make them relative, though.

[rinon]

Right, so these are just for log messages, I don't think we should change them.

[aneksteind]

Given the comments I'd support closing this @kkysen