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.
You can access the development source tree a couple of different ways.
You can check out a copy of the git repository directly using the command:
git clone https://sourceware.org/git/dwz.git
Browse the git repository via the web using the cgit interface.
Download a release tarball (available from release 0.1 onwards).
The webpages git repository https://sourceware.org/git/dwz-htdocs.git
There is a mailing list.
A DWZ discussion list.
DWZ has a bug database. Please submit a bug report if you've found a bug in DWZ.
There is a gotcha when using the dwz command in multifile
mode (on say, files a and b with multifile
c):
dwz -m c a b
If an error occurs, dwz may already have modified files
a and b, and it may be necessary to use the
original files to reproduce the error. So please be sure to submit
the original, rather than the modified files.