NAME

       dsymutil - manipulate archived DWARF debug symbol files

SYNOPSIS

       dsymutil [options] executable

DESCRIPTION

       dsymutil  links  the  DWARF  debug  information found in the object files for an executable executable by
       using debug symbols information contained in its symbol table. By default, the linked  debug  information
       is placed in a .dSYM bundle with the same name as the executable.

OPTIONS

       --accelerator=<accelerator type>
              Specify  the  desired type of accelerator table. Valid options are ‘Apple’, ‘Dwarf’, ‘Default’ and
              ‘None’.

       --arch <arch>
              Link DWARF debug information only for specified CPU  architecture  types.   Architectures  may  be
              specified  by name. When using this option, an error will be returned if any architectures can not
              be properly linked.   This  option  can  be  specified  multiple  times,  once  for  each  desired
              architecture.  All CPU architectures will be linked by default and any architectures that can’t be
              properly linked will cause dsymutil to return an error.

       --dump-debug-map
              Dump the executable’s debug-map (the list of the object files containing the debug information) in
              YAML format and exit. No DWARF link will take place.

       --fat64
              Use a 64-bit header when emitting universal binaries.

       --flat, -f
              Produce a flat dSYM file. A .dwarf extension will be appended to the executable  name  unless  the
              output file is specified using the -o option.

       --gen-reproducer
              Generate a reproducer consisting of the input object files. Alias for –reproducer=GenerateOnExit.

       --help, -h
              Print this help output.

       --keep-function-for-static
              Make a static variable keep the enclosing function even if it would have been omitted otherwise.

       --minimize, -z
              When used when creating a dSYM file, this option will suppress the emission of the .debug_inlines,
              .debug_pubnames,  and  .debug_pubtypes  sections  since dsymutil currently has better equivalents:
              .apple_names and .apple_types. When used in conjunction with --update  option,  this  option  will
              cause redundant accelerator tables to be removed.

       --no-odr
              Do not use ODR (One Definition Rule) for uniquing C++ types.

       --no-output
              Do the link in memory, but do not emit the result file.

       --no-swiftmodule-timestamp
              Don’t check the timestamp for swiftmodule files.

       --num-threads <threads>, -j <threads>
              Specifies   the  maximum  number  (n)  of  simultaneous  threads  to  use  when  linking  multiple
              architectures.

       --object-prefix-map <prefix=remapped>
              Remap object file paths (but no source paths) before processing.  Use this for Clang objects where
              the module cache location was remapped using -fdebug-prefix-map; to help dsymutil find  the  Clang
              module cache.

       --oso-prepend-path <path>
              Specifies a path to prepend to all debug symbol object file paths.

       --out <filename>, -o <filename>
              Specifies  an  alternate path to place the dSYM bundle. The default dSYM bundle path is created by
              appending .dSYM to the executable name.

       --papertrail
              When running dsymutil as part of your build system, it can be desirable for warnings to be part of
              the end product, rather than just being emitted to the output stream. When  enabled  warnings  are
              embedded in the linked DWARF debug information.

       --remarks-drop-without-debug
              Drop remarks without valid debug locations. Without this flags, all remarks are kept.

       --remarks-output-format <format>
              Specify the format to be used when serializing the linked remarks.

       --remarks-prepend-path <path>
              Specify a directory to prepend the paths of the external remark files.

       --reproducer <mode>
              Specify  the  reproducer  generation  mode. Valid options are ‘GenerateOnExit’, ‘GenerateOnCrash’,
              ‘Use’, ‘Off’.

       --statistics
              Print statistics about the contribution of each object file to the linked debug info. This  prints
              a table after linking with the object file name, the size of the debug info in the object file (in
              bytes)  and  the size contributed (in bytes) to the linked dSYM. The table is sorted by the output
              size listing the object files with the largest contribution first.

       --symbol-map <bcsymbolmap>
              Update the existing dSYMs inplace using symbol map specified.

       -s, --symtab
              Dumps the symbol table found in executable or object file(s) and exits.

       -S     Output textual assembly instead of a binary dSYM companion file.

       --toolchain <toolchain>
              Embed the toolchain in the dSYM bundle’s property list.

       -u, --update
              Update  an  existing  dSYM  file  to  contain  the  latest  accelerator  tables  and  other  DWARF
              optimizations.  This  option will rebuild the ‘.apple_names’ and ‘.apple_types’ hashed accelerator
              tables.

       --use-reproducer <path>
              Use the object files from the given reproducer path. Alias for –reproducer=Use.

       --verbose
              Display verbose information when linking.

       --verify
              Run the DWARF verifier on the linked DWARF debug info.

       -v, --version
              Display the version of the tool.

       -y     Treat executable as a YAML debug-map rather than an executable.

EXIT STATUS

       dsymutil returns 0 if the DWARF debug information was linked successfully. Otherwise, it returns 1.

SEE ALSO

       llvm-dwarfdump(1)

AUTHOR

       Maintained by the LLVM Team (https://llvm.org/).

COPYRIGHT

       2003-2025, LLVM Project

15                                                 2025-06-19                                        DSYMUTIL(1)