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| 1 | +.TH RUSTC "1" "October 2011" "Rust" "User Commands" |
| 2 | +.SH NAME |
| 3 | +rustc \- rust compiler |
| 4 | +.SH SYNOPSIS |
| 5 | +rustc [\fB-h\fR] [\fB-v\fR] [\fB-o\fR \fIoutfile\fR] |
| 6 | + [\fB--lib\fR] [\fB--static\fR] [\fB-L\fR \fIpath\fR] |
| 7 | + [\fB-g\fR] [\fB-S\fR] [\fB-c\fR] <\fIinput\fR> |
| 8 | +.PP |
| 9 | +Only the most commonly-used options are listed here. All options are listed and |
| 10 | +described below. |
| 11 | +.SH DESCRIPTION |
| 12 | +This program is a compiler for the Rust language, available at |
| 13 | +<\fBhttps://github.com/graydon/rust\fR>. |
| 14 | +.SH OPTIONS |
| 15 | +.TP |
| 16 | +\fB-h, --help\fR: Display help. |
| 17 | +.TP |
| 18 | +\fB-v, --version\fR: Display version information. |
| 19 | +.TP |
| 20 | +\fB-o\fR \fIfilename\fR: Write output to \fIfilename\fR. The default output |
| 21 | +filename for \fBfoo.rs\fR is otherwise \fBfoo\fR (when compiling a binary), |
| 22 | +\fBfoo\fR (when compiling a library), \fBfoo.o\fR (when using \fB-c\fR), |
| 23 | +\fBfoo.s\fR (when using \fB-S\fR) or \fBfoo.bc\fR (when using |
| 24 | +\fB--emit-llvm\fR). |
| 25 | +.TP |
| 26 | +\fB--lib\fR: Compile and link a library crate into a shared object. |
| 27 | +.TP |
| 28 | +\fB--static\fR: Produce a statically-linked binary, or generate a static |
| 29 | +library. |
| 30 | +.TP |
| 31 | +\fB--pretty\fR \fItype\fR: Pretty-print the input. Valid \fItype\fRs are: |
| 32 | +.RS |
| 33 | +.TP |
| 34 | +\fBnormal\fR: Un-annotated source. |
| 35 | +.TP |
| 36 | +\fBexpanded\fR: Crates expanded. |
| 37 | +.TP |
| 38 | +\fBtyped\fR: Crates expanded, all expressions annotated with types. |
| 39 | +.TP |
| 40 | +\fBidentified\fR: Fully parenthesized, ast nodes and blocks annotated with IDs. |
| 41 | +.RE |
| 42 | +.TP |
| 43 | +\fB--ls\fR: Lists symbols defined by the specified \fBcompiled\fR library. |
| 44 | +.TP |
| 45 | +\fB-L\fR \fIpath\fR: Adds \fIpath\fR to the library search path. |
| 46 | +.TP |
| 47 | +\fB--noverify\fR: Disables LLVM verification pass, which does sanity checking of |
| 48 | +bitcode generated by rustc. Using this option gives a slight speedup, at the |
| 49 | +cost of vastly reduced ability to catch rustc bugs. See |
| 50 | +<\fBhttp://llvm.org/docs/Passes.html\fR> for a list of properties checked. |
| 51 | +.TP |
| 52 | +\fB--parse-only\fR: Run the parse phase only. If parsing succeeds, produces no |
| 53 | +output. |
| 54 | +.TP |
| 55 | +\fB--no-trans\fR: Run all passes except translation. Produces no output. |
| 56 | +.TP |
| 57 | +\fB-g\fR: Produce debug info. |
| 58 | +.TP |
| 59 | +\fB--OptLevel\fR=\fIlevel\fR: Set optimization level to \fIlevel\fR. |
| 60 | +.TP |
| 61 | +\fB-O\fR: Equal to --OptLevel=2 |
| 62 | +.TP |
| 63 | +\fB-S\fR: Compile to assembly, but do not assemble or link. |
| 64 | +.TP |
| 65 | +\fB-c\fR: Compile and assemble, but do not link. |
| 66 | +.TP |
| 67 | +\fB--emit-llvm\fR: Generate llvm bitcode. |
| 68 | +.TP |
| 69 | +\fB--save-temps\fR: For foo.rs, save generated bitcode before optimization to |
| 70 | +\fBfoo.bc\fR, bitcode after optimization to \fBfoo.opt.bc\fR, and the generated |
| 71 | +object file to \fBfoo.o\fR. |
| 72 | +.TP |
| 73 | +\fB--stats\fR: Print statistics about compilation. |
| 74 | +.TP |
| 75 | +\fB--cfg\fR \fIcfgspec\fR: Provide a crate config spec. |
| 76 | +.TP |
| 77 | +\fB--time-passes\fR: Print runtimes of compilation phases. |
| 78 | +.TP |
| 79 | +\fB--time-llvm-passes\fR: Print runtimes of llvm phases. |
| 80 | +.TP |
| 81 | +\fB--sysroot\fR \fIpath\fR: Set the system root. Default is rustc's directory. |
| 82 | +.TP |
| 83 | +\fB--target\fR \fIgnu-config-name\fR: Set the compilation target, which is a |
| 84 | +string of the form \fBcpu\fR-\fBmanufacturer\fR-\fBkernel\fR[-\fBos\fR]. Example |
| 85 | +values include "i686-unknown-linux-gnu" and "mips-idt-ecoff"; see |
| 86 | +<\fBhttp://sources.redhat.com/autobook/autobook/autobook_17.html\fR>. If not |
| 87 | +supplied, the host triple is used (see \fB--version\fR output). |
| 88 | +.TP |
| 89 | +\fB--no-typestate\fR: Disable the typestate pass. This breaks some safety |
| 90 | +guarantees of the language and is quite dangerous. |
| 91 | +.TP |
| 92 | +\fB--test\fR: Build a test harness. |
| 93 | +.TP |
| 94 | +\fB--gc\fR: \fBEXPERIMENTAL\fR. Garbage-collect shared data. |
| 95 | +.TP |
| 96 | +\fB--stack-growth\fR: \fBEXPERIMENTAL\fR. Perform stack growth checks. |
| 97 | +.SH "BUGS" |
| 98 | +See \fBhttps://github.com/graydon/rust/issues\fR for a list of known bugs. |
| 99 | +.SH "AUTHOR" |
| 100 | +See \fBAUTHORS.txt\fR in the rust source distribution. Graydon Hoare |
| 101 | +< \fI[email protected]\fR> is the project leader. |
| 102 | +.SH "COPYRIGHT" |
| 103 | +See \fBLICENSE.txt\fR in the rust source distribution. |
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