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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.
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 given architecture. The default is the host
architecture. The general format of the triple is
<arch><sub>-<vendor>-<sys>-<abi>. Run rustc --print target-list for
a list of supported targets. This flag may be specified multiple
times.
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/guide/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=fmts
Output information how long each compilation takes, and track
concurrency information over time. Accepts an optional
comma-separated list of output formats; --timings without an
argument will default to --timings=html. Specifying an output format
(rather than the default) is unstable and requires
-Zunstable-options. Valid output formats:
o html (unstable, requires -Zunstable-options): Write a
human-readable file cargo-timing.html to the target/cargo-timings
directory with a report of the compilation. Also write a report
to the same directory with a timestamp in the filename if you
want to look at older runs. HTML output is suitable for human
consumption only, and does not provide machine-readable timing
data.
o json (unstable, requires -Zunstable-options): Emit
machine-readable JSON information about timing information.
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.
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)
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