| '\" t |
| .\" Title: cargo-rustc |
| .\" Author: [see the "AUTHOR(S)" section] |
| .\" Generator: Asciidoctor 2.0.10 |
| .\" Date: 2019-12-19 |
| .\" Manual: \ \& |
| .\" Source: \ \& |
| .\" Language: English |
| .\" |
| .TH "CARGO\-RUSTC" "1" "2019-12-19" "\ \&" "\ \&" |
| .ie \n(.g .ds Aq \(aq |
| .el .ds Aq ' |
| .ss \n[.ss] 0 |
| .nh |
| .ad l |
| .de URL |
| \fI\\$2\fP <\\$1>\\$3 |
| .. |
| .als MTO URL |
| .if \n[.g] \{\ |
| . mso www.tmac |
| . am URL |
| . ad l |
| . . |
| . am MTO |
| . ad l |
| . . |
| . LINKSTYLE blue R < > |
| .\} |
| .SH "NAME" |
| cargo\-rustc \- Compile the current package, and pass extra options to the compiler |
| .SH "SYNOPSIS" |
| .sp |
| \fBcargo rustc [\fIOPTIONS\fP] [\-\- \fIARGS\fP]\fP |
| .SH "DESCRIPTION" |
| .sp |
| The specified target for the current package (or package specified by \fB\-p\fP if |
| provided) will be compiled along with all of its dependencies. The specified |
| \fIARGS\fP will all be passed to the final compiler invocation, not any of the |
| dependencies. Note that the compiler will still unconditionally receive |
| arguments such as \fB\-L\fP, \fB\-\-extern\fP, and \fB\-\-crate\-type\fP, and the specified |
| \fIARGS\fP will simply be added to the compiler invocation. |
| .sp |
| See \c |
| .URL "https://doc.rust\-lang.org/rustc/index.html" "" " " |
| for documentation on rustc |
| flags. |
| .sp |
| This command requires that only one target is being compiled when additional |
| arguments are provided. If more than one target is available for the current |
| package the filters of \fB\-\-lib\fP, \fB\-\-bin\fP, etc, must be used to select which |
| target is compiled. |
| To pass flags to all compiler processes spawned by Cargo, use the \fBRUSTFLAGS\fP |
| .URL "https://doc.rust\-lang.org/cargo/reference/environment\-variables.html" "environment variable" " " |
| or the |
| \fBbuild.rustflags\fP \c |
| .URL "https://doc.rust\-lang.org/cargo/reference/config.html" "config value" "." |
| .SH "OPTIONS" |
| .SS "Package Selection" |
| .sp |
| By default, the package in the current working directory is selected. The \fB\-p\fP |
| flag can be used to choose a different package in a workspace. |
| .sp |
| \fB\-p\fP \fISPEC\fP, \fB\-\-package\fP \fISPEC\fP |
| .RS 4 |
| The package to build. See \fBcargo\-pkgid\fP(1) for |
| the SPEC format. |
| .RE |
| .SS "Target Selection" |
| .sp |
| When no target selection options are given, \fBcargo rustc\fP will build all |
| binary and library targets of the selected package. |
| .sp |
| Passing target selection flags will build only the |
| specified targets. |
| .sp |
| \fB\-\-lib\fP |
| .RS 4 |
| Build the package\(cqs library. |
| .RE |
| .sp |
| \fB\-\-bin\fP \fINAME\fP... |
| .RS 4 |
| Build the specified binary. This flag may be specified multiple times. |
| .RE |
| .sp |
| \fB\-\-bins\fP |
| .RS 4 |
| Build all binary targets. |
| .RE |
| .sp |
| \fB\-\-example\fP \fINAME\fP... |
| .RS 4 |
| Build the specified example. This flag may be specified multiple times. |
| .RE |
| .sp |
| \fB\-\-examples\fP |
| .RS 4 |
| Build all example targets. |
| .RE |
| .sp |
| \fB\-\-test\fP \fINAME\fP... |
| .RS 4 |
| Build the specified integration test. This flag may be specified multiple |
| times. |
| .RE |
| .sp |
| \fB\-\-tests\fP |
| .RS 4 |
| Build all targets in test mode that have the \fBtest = true\fP manifest |
| flag set. By default this includes the library and binaries built as |
| unittests, and integration tests. Be aware that this will also build any |
| required dependencies, so the lib target may be built twice (once as a |
| unittest, and once as a dependency for binaries, integration tests, etc.). |
| Targets may be enabled or disabled by setting the \fBtest\fP flag in the |
| manifest settings for the target. |
| .RE |
| .sp |
| \fB\-\-bench\fP \fINAME\fP... |
| .RS 4 |
| Build the specified benchmark. This flag may be specified multiple times. |
| .RE |
| .sp |
| \fB\-\-benches\fP |
| .RS 4 |
| Build all targets in benchmark mode that have the \fBbench = true\fP |
| manifest flag set. By default this includes the library and binaries built |
| as benchmarks, and bench targets. Be aware that this will also build any |
| required dependencies, so the lib target may be built twice (once as a |
| benchmark, and once as a dependency for binaries, benchmarks, etc.). |
| Targets may be enabled or disabled by setting the \fBbench\fP flag in the |
| manifest settings for the target. |
| .RE |
| .sp |
| \fB\-\-all\-targets\fP |
| .RS 4 |
| Build all targets. This is equivalent to specifying \fB\-\-lib \-\-bins |
| \-\-tests \-\-benches \-\-examples\fP. |
| .RE |
| .SS "Feature Selection" |
| .sp |
| When no feature options are given, the \fBdefault\fP feature is activated for |
| every selected package. |
| .sp |
| \fB\-\-features\fP \fIFEATURES\fP |
| .RS 4 |
| Space or comma separated list of features to activate. These features only |
| apply to the current directory\(cqs package. Features of direct dependencies |
| may be enabled with \fB<dep\-name>/<feature\-name>\fP syntax. This flag may be |
| specified multiple times, which enables all specified features. |
| .RE |
| .sp |
| \fB\-\-all\-features\fP |
| .RS 4 |
| Activate all available features of all selected packages. |
| .RE |
| .sp |
| \fB\-\-no\-default\-features\fP |
| .RS 4 |
| Do not activate the \fBdefault\fP feature of the current directory\(cqs |
| package. |
| .RE |
| .SS "Compilation Options" |
| .sp |
| \fB\-\-target\fP \fITRIPLE\fP |
| .RS 4 |
| Build for the given architecture. The default is the host |
| architecture. The general format of the triple is |
| \fB<arch><sub>\-<vendor>\-<sys>\-<abi>\fP. Run \fBrustc \-\-print target\-list\fP for a |
| list of supported targets. |
| .sp |
| This may also be specified with the \fBbuild.target\fP |
| .URL "https://doc.rust\-lang.org/cargo/reference/config.html" "config value" "." |
| .sp |
| Note that specifying this flag makes Cargo run in a different mode where the |
| target artifacts are placed in a separate directory. See the |
| .URL "https://doc.rust\-lang.org/cargo/guide/build\-cache.html" "build cache" " " |
| documentation for more details. |
| .RE |
| .sp |
| \fB\-\-release\fP |
| .RS 4 |
| Build optimized artifacts with the \fBrelease\fP profile. See the |
| PROFILES section for details on how this affects profile selection. |
| .RE |
| .SS "Output Options" |
| .sp |
| \fB\-\-target\-dir\fP \fIDIRECTORY\fP |
| .RS 4 |
| Directory for all generated artifacts and intermediate files. May also be |
| specified with the \fBCARGO_TARGET_DIR\fP environment variable, or the |
| \fBbuild.target\-dir\fP \c |
| .URL "https://doc.rust\-lang.org/cargo/reference/config.html" "config value" "." |
| Defaults |
| to \fBtarget\fP in the root of the workspace. |
| .RE |
| .SS "Display Options" |
| .sp |
| \fB\-v\fP, \fB\-\-verbose\fP |
| .RS 4 |
| 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 \fBterm.verbose\fP |
| .URL "https://doc.rust\-lang.org/cargo/reference/config.html" "config value" "." |
| .RE |
| .sp |
| \fB\-q\fP, \fB\-\-quiet\fP |
| .RS 4 |
| No output printed to stdout. |
| .RE |
| .sp |
| \fB\-\-color\fP \fIWHEN\fP |
| .RS 4 |
| Control when colored output is used. Valid values: |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBauto\fP (default): Automatically detect if color support is available on the |
| terminal. |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBalways\fP: Always display colors. |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBnever\fP: Never display colors. |
| .RE |
| .sp |
| May also be specified with the \fBterm.color\fP |
| .URL "https://doc.rust\-lang.org/cargo/reference/config.html" "config value" "." |
| .RE |
| .sp |
| \fB\-\-message\-format\fP \fIFMT\fP |
| .RS 4 |
| The output format for diagnostic messages. Can be specified multiple times |
| and consists of comma\-separated values. Valid values: |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBhuman\fP (default): Display in a human\-readable text format. |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBshort\fP: Emit shorter, human\-readable text messages. |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBjson\fP: Emit JSON messages to stdout. See |
| \c |
| .URL "https://doc.rust\-lang.org/cargo/reference/external\-tools.html#json\-messages" "the reference" |
| for more details. |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBjson\-diagnostic\-short\fP: Ensure the \fBrendered\fP field of JSON messages contains |
| the "short" rendering from rustc. |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBjson\-diagnostic\-rendered\-ansi\fP: Ensure the \fBrendered\fP field of JSON messages |
| contains embedded ANSI color codes for respecting rustc\(cqs default color |
| scheme. |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04'\(bu\h'+03'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP \(bu 2.3 |
| .\} |
| \fBjson\-render\-diagnostics\fP: Instruct Cargo to not include rustc diagnostics in |
| in JSON messages printed, but instead Cargo itself should render the |
| JSON diagnostics coming from rustc. Cargo\(cqs own JSON diagnostics and others |
| coming from rustc are still emitted. |
| .RE |
| .RE |
| .SS "Manifest Options" |
| .sp |
| \fB\-\-manifest\-path\fP \fIPATH\fP |
| .RS 4 |
| Path to the \fBCargo.toml\fP file. By default, Cargo searches for the |
| \fBCargo.toml\fP file in the current directory or any parent directory. |
| .RE |
| .sp |
| \fB\-\-frozen\fP, \fB\-\-locked\fP |
| .RS 4 |
| Either of these flags requires that the \fBCargo.lock\fP file is |
| up\-to\-date. If the lock file is missing, or it needs to be updated, Cargo will |
| exit with an error. The \fB\-\-frozen\fP flag also prevents Cargo from |
| attempting to access the network to determine if it is out\-of\-date. |
| .sp |
| These may be used in environments where you want to assert that the |
| \fBCargo.lock\fP file is up\-to\-date (such as a CI build) or want to avoid network |
| access. |
| .RE |
| .sp |
| \fB\-\-offline\fP |
| .RS 4 |
| 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. |
| .sp |
| 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 \fBcargo\-fetch\fP(1) command to download dependencies before going |
| offline. |
| .sp |
| May also be specified with the \fBnet.offline\fP \c |
| .URL "https://doc.rust\-lang.org/cargo/reference/config.html" "config value" "." |
| .RE |
| .SS "Common Options" |
| .sp |
| \fB\-h\fP, \fB\-\-help\fP |
| .RS 4 |
| Prints help information. |
| .RE |
| .sp |
| \fB\-Z\fP \fIFLAG\fP... |
| .RS 4 |
| Unstable (nightly\-only) flags to Cargo. Run \fBcargo \-Z help\fP for |
| details. |
| .RE |
| .SS "Miscellaneous Options" |
| .sp |
| \fB\-j\fP \fIN\fP, \fB\-\-jobs\fP \fIN\fP |
| .RS 4 |
| Number of parallel jobs to run. May also be specified with the |
| \fBbuild.jobs\fP \c |
| .URL "https://doc.rust\-lang.org/cargo/reference/config.html" "config value" "." |
| Defaults to |
| the number of CPUs. |
| .RE |
| .SH "PROFILES" |
| .sp |
| Profiles may be used to configure compiler options such as optimization levels |
| and debug settings. See |
| \c |
| .URL "https://doc.rust\-lang.org/cargo/reference/profiles.html" "the reference" |
| for more details. |
| .sp |
| Profile selection depends on the target and crate being built. By default the |
| \fBdev\fP or \fBtest\fP profiles are used. If the \fB\-\-release\fP flag is given, then the |
| \fBrelease\fP or \fBbench\fP profiles are used. |
| .TS |
| allbox tab(:); |
| lt lt lt. |
| T{ |
| .sp |
| Target |
| T}:T{ |
| .sp |
| Default Profile |
| T}:T{ |
| .sp |
| \fB\-\-release\fP Profile |
| T} |
| T{ |
| .sp |
| lib, bin, example |
| T}:T{ |
| .sp |
| \fBdev\fP |
| T}:T{ |
| .sp |
| \fBrelease\fP |
| T} |
| T{ |
| .sp |
| test, bench, or any target |
| .br |
| in "test" or "bench" mode |
| T}:T{ |
| .sp |
| \fBtest\fP |
| T}:T{ |
| .sp |
| \fBbench\fP |
| T} |
| .TE |
| .sp |
| .sp |
| Dependencies use the \fBdev\fP/\fBrelease\fP profiles. |
| .SH "ENVIRONMENT" |
| .sp |
| See \c |
| .URL "https://doc.rust\-lang.org/cargo/reference/environment\-variables.html" "the reference" " " |
| for |
| details on environment variables that Cargo reads. |
| .SH "EXIT STATUS" |
| .sp |
| 0 |
| .RS 4 |
| Cargo succeeded. |
| .RE |
| .sp |
| 101 |
| .RS 4 |
| Cargo failed to complete. |
| .RE |
| .SH "EXAMPLES" |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04' 1.\h'+01'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP " 1." 4.2 |
| .\} |
| Check if your package (not including dependencies) uses unsafe code: |
| .sp |
| .if n .RS 4 |
| .nf |
| cargo rustc \-\-lib \-\- \-D unsafe\-code |
| .fi |
| .if n .RE |
| .RE |
| .sp |
| .RS 4 |
| .ie n \{\ |
| \h'-04' 2.\h'+01'\c |
| .\} |
| .el \{\ |
| . sp -1 |
| . IP " 2." 4.2 |
| .\} |
| Try an experimental flag on the nightly compiler, such as this which prints |
| the size of every type: |
| .sp |
| .if n .RS 4 |
| .nf |
| cargo rustc \-\-lib \-\- \-Z print\-type\-sizes |
| .fi |
| .if n .RE |
| .RE |
| .SH "SEE ALSO" |
| .sp |
| \fBcargo\fP(1), \fBcargo\-build\fP(1), \fBrustc\fP(1) |