cargo-doc.txt

CARGO-DOC(1)

NAME
       cargo-doc — Build a package’s documentation

SYNOPSIS
       cargo doc [options]

DESCRIPTION
       Build the documentation for the local package and all dependencies. The
       output is placed in target/doc in rustdoc’s usual format.

       Note: Documentation generation is cumulative: existing doc files in the
       target directory are preserved across different cargo doc invocations.
       To remove existing generated docs, pass --doc to cargo-clean(1).

OPTIONS
   Documentation Options
       --open
           Open the docs in a browser after building them. This will use your
           default browser unless you define another one in the BROWSER
           environment variable or use the doc.browser
           <https://doc.rust-lang.org/cargo/reference/config.html#docbrowser>
           configuration option.

       --no-deps
           Do not build documentation for dependencies.

       --document-private-items
           Include non-public items in the documentation. This will be enabled
           by default if documenting a binary target.

   Package Selection
       By default, when no package selection options are given, the packages
       selected depend on the selected manifest file (based on the current
       working directory if --manifest-path is not given). If the manifest is
       the root of a workspace then the workspaces default members are
       selected, otherwise only the package defined by the manifest will be
       selected.

       The default members of a workspace can be set explicitly with the
       workspace.default-members key in the root manifest. If this is not set,
       a virtual workspace will include all workspace members (equivalent to
       passing --workspace), and a non-virtual workspace will include only the
       root crate itself.

       -p spec…, --package spec…
           Document only the specified packages. See cargo-pkgid(1) for the
           SPEC format. This flag may be specified multiple times and supports
           common Unix glob patterns like *, ? and []. However, to avoid your
           shell accidentally expanding glob patterns before Cargo handles
           them, you must use single quotes or double quotes around each
           pattern.

       --workspace
           Document all members in the workspace.

       --all
           Deprecated alias for --workspace.

       --exclude SPEC…
           Exclude the specified packages. Must be used in conjunction with the
           --workspace flag. This flag may be specified multiple times and
           supports common Unix glob patterns like *, ? and []. However, to
           avoid your shell accidentally expanding glob patterns before Cargo
           handles them, you must use single quotes or double quotes around
           each pattern.

   Target Selection
       When no target selection options are given, cargo doc will document all
       binary and library targets of the selected package. The binary will be
       skipped if its name is the same as the lib target. Binaries are skipped
       if they have required-features that are missing.

       The default behavior can be changed by setting doc = false for the
       target in the manifest settings. Using target selection options will
       ignore the doc flag and will always document the given target.

       --lib
           Document the package’s library.

       --bin name…
           Document the specified binary. This flag may be specified multiple
           times and supports common Unix glob patterns.

       --bins
           Document all binary targets.

       --example name…
           Document the specified example. This flag may be specified multiple
           times and supports common Unix glob patterns.

       --examples
           Document all example targets.

   Feature Selection
       The feature flags allow you to control which features are enabled. When
       no feature options are given, the default feature is activated for every
       selected package.

       See the features documentation
       <https://doc.rust-lang.org/cargo/reference/features.html#command-line-feature-options>
       for more details.

       -F features, --features features
           Space or comma separated list of features to activate. Features of
           workspace members may be enabled with package-name/feature-name
           syntax. This flag may be specified multiple times, which enables all
           specified features.

       --all-features
           Activate all available features of all selected packages.

       --no-default-features
           Do not activate the default feature of the selected packages.

   Compilation Options
       --target triple
           Document for the specified target architecture. Flag may be
           specified multiple times. The default is the host architecture. The
           general format of the triple is <arch><sub>-<vendor>-<sys>-<abi>.

           Possible values:

           o  Any supported target in rustc --print target-list.

           o  "host-tuple", which will internally be substituted by the
              host’s target. This can be particularly useful if you’re
              cross-compiling some crates, and don’t want to specify your
              host’s machine as a target (for instance, an xtask in a shared
              project that may be worked on by many hosts).

           o  A path to a custom target specification. See Custom Target Lookup
              Path
              <https://doc.rust-lang.org/rustc/targets/custom.html#custom-target-lookup-path>
              for more information.

           This may also be specified with the build.target config value
           <https://doc.rust-lang.org/cargo/reference/config.html>.

           Note that specifying this flag makes Cargo run in a different mode
           where the target artifacts are placed in a separate directory. See
           the build cache
           <https://doc.rust-lang.org/cargo/reference/build-cache.html>
           documentation for more details.

       -r, --release
           Document optimized artifacts with the release profile. See also the
           --profile option for choosing a specific profile by name.

       --profile name
           Document with the given profile. See the reference
           <https://doc.rust-lang.org/cargo/reference/profiles.html> for more
           details on profiles.

       --timings
           Output information how long each compilation takes, and track
           concurrency information over time.

           A file cargo-timing.html will be written to the target/cargo-timings
           directory at the end of the build. An additional report with a
           timestamp in its filename is also written if you want to look at a
           previous run. These reports are suitable for human consumption only,
           and do not provide machine-readable timing data.

   Output Options
       --target-dir directory
           Directory for all generated artifacts and intermediate files. May
           also be specified with the CARGO_TARGET_DIR environment variable, or
           the build.target-dir config value
           <https://doc.rust-lang.org/cargo/reference/config.html>. Defaults to
           target in the root of the workspace.

   Display Options
       -v, --verbose
           Use verbose output. May be specified twice for “very verbose”
           output which includes extra output such as dependency warnings and
           build script output. May also be specified with the term.verbose
           config value
           <https://doc.rust-lang.org/cargo/reference/config.html>.

       -q, --quiet
           Do not print cargo log messages. May also be specified with the
           term.quiet config value
           <https://doc.rust-lang.org/cargo/reference/config.html>.

       --color when
           Control when colored output is used. Valid values:

           o  auto (default): Automatically detect if color support is
              available on the terminal.

           o  always: Always display colors.

           o  never: Never display colors.

           May also be specified with the term.color config value
           <https://doc.rust-lang.org/cargo/reference/config.html>.

       --message-format fmt
           The output format for diagnostic messages. Can be specified multiple
           times and consists of comma-separated values. Valid values:

           o  human (default): Display in a human-readable text format.
              Conflicts with short and json.

           o  short: Emit shorter, human-readable text messages. Conflicts with
              human and json.

           o  json: Emit JSON messages to stdout. See the reference
              <https://doc.rust-lang.org/cargo/reference/external-tools.html#json-messages>
              for more details. Conflicts with human and short.

           o  json-diagnostic-short: Ensure the rendered field of JSON messages
              contains the “short” rendering from rustc. Cannot be used
              with human or short.

           o  json-diagnostic-rendered-ansi: Ensure the rendered field of JSON
              messages contains embedded ANSI color codes for respecting
              rustc’s default color scheme. Cannot be used with human or
              short.

           o  json-render-diagnostics: Instruct Cargo to not include rustc
              diagnostics in JSON messages printed, but instead Cargo itself
              should render the JSON diagnostics coming from rustc. Cargo’s
              own JSON diagnostics and others coming from rustc are still
              emitted. Cannot be used with human or short.

   Manifest Options
       --manifest-path path
           Path to the Cargo.toml file. By default, Cargo searches for the
           Cargo.toml file in the current directory or any parent directory.

       --ignore-rust-version
           Ignore rust-version specification in packages.

       --locked
           Asserts that the exact same dependencies and versions are used as
           when the existing Cargo.lock file was originally generated. Cargo
           will exit with an error when either of the following scenarios
           arises:

           o  The lock file is missing.

           o  Cargo attempted to change the lock file due to a different
              dependency resolution.

           It may be used in environments where deterministic builds are
           desired, such as in CI pipelines.

       --offline
           Prevents Cargo from accessing the network for any reason. Without
           this flag, Cargo will stop with an error if it needs to access the
           network and the network is not available. With this flag, Cargo will
           attempt to proceed without the network if possible.

           Beware that this may result in different dependency resolution than
           online mode. Cargo will restrict itself to crates that are
           downloaded locally, even if there might be a newer version as
           indicated in the local copy of the index. See the cargo-fetch(1)
           command to download dependencies before going offline.

           May also be specified with the net.offline config value
           <https://doc.rust-lang.org/cargo/reference/config.html>.

       --frozen
           Equivalent to specifying both --locked and --offline.

       --lockfile-path PATH
           Changes the path of the lockfile from the default
           (<workspace_root>/Cargo.lock) to PATH. PATH must end with Cargo.lock
           (e.g. --lockfile-path /tmp/temporary-lockfile/Cargo.lock). Note that
           providing --lockfile-path will ignore existing lockfile at the
           default path, and instead will either use the lockfile from PATH, or
           write a new lockfile into the provided PATH if it doesn’t exist.
           This flag can be used to run most commands in read-only directories,
           writing lockfile into the provided PATH.

           This option is only available on the nightly channel
           <https://doc.rust-lang.org/book/appendix-07-nightly-rust.html> and
           requires the -Z unstable-options flag to enable (see #14421
           <https://github.com/rust-lang/cargo/issues/14421>).

   Common Options
       +toolchain
           If Cargo has been installed with rustup, and the first argument to
           cargo begins with +, it will be interpreted as a rustup toolchain
           name (such as +stable or +nightly). See the rustup documentation
           <https://rust-lang.github.io/rustup/overrides.html> for more
           information about how toolchain overrides work.

       --config KEY=VALUE or PATH
           Overrides a Cargo configuration value. The argument should be in
           TOML syntax of KEY=VALUE, or provided as a path to an extra
           configuration file. This flag may be specified multiple times. See
           the command-line overrides section
           <https://doc.rust-lang.org/cargo/reference/config.html#command-line-overrides>
           for more information.

       -C PATH
           Changes the current working directory before executing any specified
           operations. This affects things like where cargo looks by default
           for the project manifest (Cargo.toml), as well as the directories
           searched for discovering .cargo/config.toml, for example. This
           option must appear before the command name, for example cargo -C
           path/to/my-project build.

           This option is only available on the nightly channel
           <https://doc.rust-lang.org/book/appendix-07-nightly-rust.html> and
           requires the -Z unstable-options flag to enable (see #10098
           <https://github.com/rust-lang/cargo/issues/10098>).

       -h, --help
           Prints help information.

       -Z flag
           Unstable (nightly-only) flags to Cargo. Run cargo -Z help for
           details.

   Miscellaneous Options
       -j N, --jobs N
           Number of parallel jobs to run. May also be specified with the
           build.jobs config value
           <https://doc.rust-lang.org/cargo/reference/config.html>. Defaults to
           the number of logical CPUs. If negative, it sets the maximum number
           of parallel jobs to the number of logical CPUs plus provided value.
           If a string default is provided, it sets the value back to defaults.
           Should not be 0.

       --keep-going
           Build as many crates in the dependency graph as possible, rather
           than aborting the build on the first one that fails to build.

           For example if the current package depends on dependencies fails and
           works, one of which fails to build, cargo doc -j1 may or may not
           build the one that succeeds (depending on which one of the two
           builds Cargo picked to run first), whereas cargo doc -j1
           --keep-going would definitely run both builds, even if the one run
           first fails.

ENVIRONMENT
       See the reference
       <https://doc.rust-lang.org/cargo/reference/environment-variables.html>
       for details on environment variables that Cargo reads.

EXIT STATUS
       o  0: Cargo succeeded.

       o  101: Cargo failed to complete.

EXAMPLES
       1. Build the local package documentation and its dependencies and output
          to target/doc.

              cargo doc

SEE ALSO
       cargo(1), cargo-rustdoc(1), rustdoc(1)