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ffe6466b17
Add a flag to change dsymutil's behavior and force a static variable to keep its enclosing function. The test shows a situation where that could be useful. I'm not convinced this behavior makes sense as a default, which is why it's behind a flag. rdar://74918374 Differential revision: https://reviews.llvm.org/D101337
173 lines
5.1 KiB
ReStructuredText
173 lines
5.1 KiB
ReStructuredText
dsymutil - manipulate archived DWARF debug symbol files
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=======================================================
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.. program:: dsymutil
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SYNOPSIS
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--------
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| :program:`dsymutil` [*options*] *executable*
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DESCRIPTION
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-----------
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:program:`dsymutil` links the DWARF debug information found in the object files
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for an executable *executable* by using debug symbols information contained in
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its symbol table. By default, the linked debug information is placed in a
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``.dSYM`` bundle with the same name as the executable.
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OPTIONS
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-------
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.. option:: --accelerator=<accelerator type>
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Specify the desired type of accelerator table. Valid options are 'Apple',
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'Dwarf' and 'Default'.
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.. option:: --arch <arch>
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Link DWARF debug information only for specified CPU architecture types.
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Architectures may be specified by name. When using this option, an error will
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be returned if any architectures can not be properly linked. This option can
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be specified multiple times, once for each desired architecture. All CPU
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architectures will be linked by default and any architectures that can't be
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properly linked will cause :program:`dsymutil` to return an error.
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.. option:: --dump-debug-map
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Dump the *executable*'s debug-map (the list of the object files containing the
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debug information) in YAML format and exit. Not DWARF link will take place.
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.. option:: --flat, -f
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Produce a flat dSYM file. A ``.dwarf`` extension will be appended to the
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executable name unless the output file is specified using the ``-o`` option.
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.. option:: --gen-reproducer
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Generate a reproducer consisting of the input object files.
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.. option:: --help, -h
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Print this help output.
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.. option:: --keep-function-for-static
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Make a static variable keep the enclosing function even if it would have been
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omitted otherwise.
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.. option:: --minimize, -z
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When used when creating a dSYM file, this option will suppress the emission of
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the .debug_inlines, .debug_pubnames, and .debug_pubtypes sections since
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dsymutil currently has better equivalents: .apple_names and .apple_types. When
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used in conjunction with ``--update`` option, this option will cause redundant
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accelerator tables to be removed.
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.. option:: --no-odr
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Do not use ODR (One Definition Rule) for uniquing C++ types.
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.. option:: --no-output
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Do the link in memory, but do not emit the result file.
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.. option:: --no-swiftmodule-timestamp
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Don't check the timestamp for swiftmodule files.
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.. option:: --num-threads <threads>, -j <threads>
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Specifies the maximum number (``n``) of simultaneous threads to use when
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linking multiple architectures.
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.. option:: --object-prefix-map <prefix=remapped>
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Remap object file paths (but no source paths) before processing. Use
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this for Clang objects where the module cache location was remapped using
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``-fdebug-prefix-map``; to help dsymutil find the Clang module cache.
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.. option:: --oso-prepend-path <path>
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Specifies a ``path`` to prepend to all debug symbol object file paths.
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.. option:: --out <filename>, -o <filename>
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Specifies an alternate ``path`` to place the dSYM bundle. The default dSYM
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bundle path is created by appending ``.dSYM`` to the executable name.
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.. option:: --papertrail
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When running dsymutil as part of your build system, it can be desirable for
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warnings to be part of the end product, rather than just being emitted to the
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output stream. When enabled warnings are embedded in the linked DWARF debug
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information.
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.. option:: --remarks-output-format <format>
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Specify the format to be used when serializing the linked remarks.
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.. option:: --remarks-prepend-path <path>
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Specify a directory to prepend the paths of the external remark files.
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.. option:: --statistics
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Print statistics about the contribution of each object file to the linked
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debug info. This prints a table after linking with the object file name, the
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size of the debug info in the object file (in bytes) and the size contributed
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(in bytes) to the linked dSYM. The table is sorted by the output size listing
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the object files with the largest contribution first.
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.. option:: --symbol-map <bcsymbolmap>
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Update the existing dSYMs inplace using symbol map specified.
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.. option:: -s, --symtab
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Dumps the symbol table found in *executable* or object file(s) and exits.
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.. option:: -S
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Output textual assembly instead of a binary dSYM companion file.
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.. option:: --toolchain <toolchain>
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Embed the toolchain in the dSYM bundle's property list.
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.. option:: -u, --update
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Update an existing dSYM file to contain the latest accelerator tables and
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other DWARF optimizations. This option will rebuild the '.apple_names' and
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'.apple_types' hashed accelerator tables.
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.. option:: --use-reproducer <path>
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Use the object files from the given reproducer path.
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.. option:: --verbose
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Display verbose information when linking.
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.. option:: --verify
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Run the DWARF verifier on the linked DWARF debug info.
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.. option:: -v, --version
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Display the version of the tool.
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.. option:: -y
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Treat *executable* as a YAML debug-map rather than an executable.
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EXIT STATUS
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-----------
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:program:`dsymutil` returns 0 if the DWARF debug information was linked
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successfully. Otherwise, it returns 1.
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SEE ALSO
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--------
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:manpage:`llvm-dwarfdump(1)`
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