Rustc Help (CloudMonk.io)
rustc help
Return to rustc, Rust or rustup
Usage: rustc [OPTIONS] INPUT
Options:
-h, --help Display this message
--cfg SPEC Configure the Rust compilation environment
-L [KIND=]PATH Add a directory to the library search path. The optional KIND can be one of Rust dependency, crate, Rust native, Rust framework, or all (the default).
-l [KIND[:MODIFIERS]=]NAME[:RENAME]
Link the generated crate(s) to the specified Rust native library NAME. The optional KIND can be one of static, framework, or dylib (the default).
Optional comma separated MODIFIERS
(bundle|verbatim|whole-archive|as-needed) may be specified each with a prefix of either '+' to enable or '-' to disable.
--crate-type [bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]
Comma separated list of types of crates
for the compiler to emit
--crate-name NAME
Specify the name of the crate being built
--edition 2015|2018|2021
Specify which edition of the compiler to use when
compiling code.
--emit [asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]
Comma separated list of types of output for the
compiler to emit
--print [crate-name|file-names|sysroot|target-libdir|cfg|target-list|target-cpus|target-features|relocation-models|code-models|tls-models|target-spec-json|native-static-libs]
Compiler information to print on stdout
-g Equivalent to -C debuginfo=2
-O Equivalent to -C opt-level=2
-o FILENAME Write output to
--out-dir DIR Write output to compiler-chosen filename in
--explain OPT Provide a detailed explanation of an error message
--test Build a test harness
--target TARGET Target triple for which the code is compiled
-W, --warn OPT Set lint warnings
-A, --allow OPT Set lint allowed
-D, --deny OPT Set lint denied
-F, --forbid OPT Set lint forbidden
--cap-lints LEVEL
Set the most restrictive lint level. More restrictive
lints are capped at this level
--force-warns LINT
Specifiy lints that should warn even if they are
allowed somewhere else
-C, --codegen OPT[=VALUE]
Set a codegen option
-V, --version Print version info and exit
-v, --verbose Use verbose output
Additional help:
-C help Print codegen options
-W help Print 'lint' options and default settings
--help -v Print the full set of options rustc accepts