-m FILE --multifile FILE Multifile mode. After processing all named executables and shared libraries, attempt to create ELF object FILE and put debugging information duplicated in more than one object there, afterwards optimize each named executable or shared library even further if possible.
-h --hardlink Look for executables or shared libraries hardlinked together, instead of rewriting them individually rewrite just one of them and hardlink the rest to the first one again.
-M NAME --multifile-name NAME Specify the name of the common file that should be put into the .gnu_debugaltlink section alongside with its build ID. By default dwz puts there the argument of the -m option.
-r --relative Specify that the name of the common file to be put into the .gnu_debugaltlink section is supposed to be relative path from the directory containing the executable or shared library to the file named in the argument of the -m option. Either -M or -r option can be specified, but not both.
-q --quiet Silence up some of the most common messages.
-o FILE --output FILE This option instructs dwz not to overwrite the specified file, but instead store the new content into FILE. Nothing is written if dwz exits with non-zero exit code. Can be used only with a single executable or shared library (if there are no arguments at all, a.out is assumed).
-l <COUNT|none> --low-mem-die-limit <COUNT|none> Handle executables or shared libraries containing more than COUNT debugging information entries in their .debug_info section using a slower and more memory usage friendly mode and don't attempt to optimize that object in multifile mode. The default is 10 million DIEs. There is a risk that for very large amounts of debugging information in a single shared library or executable there might not be enough memory (especially when dwz tool is 32-bit binary, it might run out of available virtual address space even sooner). Specifying none as argument disables the limit.
-L <COUNT|none> --max-die-limit <COUNT|none> Don't attempt to optimize executables or shared libraries containing more than COUNT DIEs at all. The default is 50 million DIEs. Specifying none as argument disables the limit.
-5 --dwarf-5 Emit standard DWARF 5 Supplementary Object Files with .debug_sup and corresponding forms, instead of the GNU extension .gnu_debugaltlink and corresponding forms.
--odr / --no-odr Experimental. Enable/disable One-Definition-Rule optimization for C++ compilation units. This optimization causes struct/union/class DIEs with the same name to be considered equal. This has the effect that DIEs referring to distinct DIEs representing the same type (like f.i. pointer type DIEs) are considered equal, and may be deduplicated. The status of this optimization is experimental. It's disabled in low-mem mode. Disabled by default.
--odr-mode=<basic|link> Set the One-Definition-Rule optimization aggressiveness: basic or link. When using the link setting, the optimization will attempt to replace declarations of a struct/union/class with a corresponding definition. When using the basic setting, that part of the optimization is disabled. In normal operation, the link setting should be used. The basic setting is provided only as fallback in case of problems with the link setting. Set to link by default.
--import-optimize / --no-import-optimize Enable/disable optimization that reduces the number of DW_TAG_imported_unit DIEs generated to import the partial units created by dwz. Disabling the optimization can be used to work around problems in the optimization, or to make it easier to observe which CU imports which PU. Enabled by default.
-? --help Print short help and exit.
-v --version Print version number and short licensing notice and exit.
$ dwz -m .dwz/foobar-1.2.debug -rh \\ bin/foo.debug bin/foo2.debug foo/lib/libbar.so.debug
$ dwz -o foo.dwz foo
$ dwz *.debug foo/*.debug
$ dwz