Debug Symbols: Difference between revisions
imported>Symphorien explain how to get debug info in gdb. maybe slightly too verbose. |
imported>Symphorien →Unstripped packages: mention the difference between dontStrip and enableDebugging |
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Two types of packages can provide debug symbols: | Two types of packages can provide debug symbols: | ||
==== Unstripped packages ==== | ==== Unstripped packages ==== | ||
To prevent stripping of a derivation, use the option <code>dontStrip = true;</code>. This still compiles with optimisation; | |||
to compile with <code>-Og -ggdb</code> in addition to disabling stripping, you can use the function <code>enableDebugging</code>. | |||
Let's take the example of <code>socat</code>. | Let's take the example of <code>socat</code>. | ||
If you install socat, then run | If you install socat, then run | ||
{{Commands| | {{Commands| | ||
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you see that you have debugging symbols for neither socat itself nor for dependent libraries. | you see that you have debugging symbols for neither socat itself nor for dependent libraries. | ||
Now, | Now, build an unstripped socat: | ||
{{Commands| | {{Commands| | ||
$ nix-build -E 'with import <nixpkgs> {}; enableDebugging socat' | $ nix-build -E 'with import <nixpkgs> {}; enableDebugging socat' | ||