On Fri, Mar 20, 2020 at 03:22:16PM -0400, Brian Callahan wrote: > Hello ports -- > > It was hinted at recently that a port of dwz might be desirable. Here is > one. > > --- > pkg/DESCR: > dwz is a program that attempts to optimize DWARF debugging information > contained in ELF shared libraries and ELF executables for size, by > replacing DWARF information representation with equivalent smaller > representation where possible and by reducing the amount of duplication > using techniques from DWARF standard appendix E - creating > DW_TAG_partial_unit compilation units (CUs) for duplicated information > and using DW_TAG_imported_unit to import it into each CU that needs it. > --- > > Can verify that it does in fact do something with some test binaries on > amd64 (diffing the output of `objdump -g' from a newer binutils does show > substantial differences), but I don't know enough about DWARF symbols to > authoritatively say anything more than that. Testing on other archs would be > greatly appreciated. > > OK? Thanks for the initial work, but you're not thinking straight.
Here's an updated port. You'll notice the dependencies on gmake and xz are gone, which is required if we want to use this for DEBUG_PACKAGES eventually ;)
dwz.tgz
Description: dwz.tgz
