Hi Nick, On Wed, Feb 24, 2021 at 05:00:14PM +0000, Nick Clifton wrote: > > Context is that dwz 0.15 (still not released yet) can now produce > > standardized DWARF Supplementary Files using a .debug_sup section > > when using --dwarf-5 -m multifile. See this bug report: > > https://sourceware.org/bugzilla/show_bug.cgi?id=27440 > > Is there somewhere that I can lay my hands on a file containing a > .debug_sup section and its corresponding supplimentary file ? I > would like to test the binutils to make sure that they can support > them too.
Currently you need dwz git trunk (hopefully we will do a real release by Monday?). The following will get you a .sup file for dwz itself: $ git clone git://sourceware.org/git/dwz.git $ cd dwz $ ./configure $ make $ cp dwz one $ cp dwz two $ dwz --dwarf-5 -m sup one two If you already process .gnu_debugaltlink then processing the .debug_sup shouldn't be too hard. Just don't expect there to be a .note.gnu.build-id. Also note that instead of DW_FORM_GNU_alt_ref and DW_FORM_GNU_alt_strp the one and two files will contain DW_FORM_ref_sup and DW_FORM_ref_strp. The formal description of the .debug_sup section can be found in section 7.3.6 DWARF Supplementary Object Files http://dwarfstd.org/doc/DWARF5.pdf Cheers, Mark
