Crate build_helper [−] [src]

This crate contains convenience methods for build scripts.

It provides easy access to the information Cargo provides to build scripts, as well as functions for emitting information back to Cargo.

Compatibility

The following optional features are available:

nightly: requires a nightly compiler, and introduces functionality that is not subject to normal stability guarantees.
- target::features - target processor features.
- target::has_atomic - target platform atomic types.

pub extern crate semver;

bin	Functions for locating toolchain binaries.
cargo	Information related to the Cargo package environment.
metadata	Inter-dependency metadata.
rustc	Functions for communicating with `rustc`.
target	Target platform information.

Instructs Cargo to display a warning.

InvalidInput	Error type indicating a string parse failed due to invalid input.
Triple	Platform triple.

Atomic	Represents an atomic type supported by a target.
Endianness	Represents the target platform's endianness.
LibKind	Library linkage kind.
Profile	A build profile.
SearchKind	Library search path kind.

debug	Is this a debug build?
host	Host platform triple.
num_jobs	Number of top-level parallel jobs.
opt_level	Optimisation level.
out_dir	Output directory for build script outputs.
profile	Build profile.
rerun_if_changed	Specify a file or directory which, if changed, should trigger a rebuild.
unix	Is this build targeting a UNIX platform?
warning	Instructs Cargo to display a warning.
windows	Is this build targetting Microsoft Windows?