Debugging shim in gdb gives 'Dwarf Error: DW_FORM_line_strp used without required section'

[mikebeaton]

When attempting to debug shim in gdb, it currently gives the error: Dwarf Error: DW_FORM_line_strp used without required section

This appears to be the same issue reported here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2014231 (also golang/vscode-go#1914 and haikuports/haikuports#4987), which is nothing to do with shim: current versions of gcc produce DWARF5 by default, but current versions of gdb only accept DWARF4.

Applying the gcc flags suggested in those issues (-gdwarf-4 -gstrict-dwarf) makes shim debuggable again.

[vathpela]

Apologies for the delay here - is this still an issue with gdb? If so, the change looks good to me.

[mikebeaton]

I can confirm that the issue still applies with gcc (GCC) 14.2.1 20240912 (Red Hat 14.2.1-3) and GNU gdb (Fedora Linux) 15.2-2.fc41 on Fedora 41, and the PR still fixes it.