зеркало из https://github.com/mozilla/gecko-dev.git
78 строки
2.5 KiB
Rust
78 строки
2.5 KiB
Rust
// Copyright 2016 Kyle Mayes
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Finds `libclang` static or dynamic libraries and links to them.
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//!
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//! # Environment Variables
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//!
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//! This build script can make use of several environment variables to help it find the required
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//! static or dynamic libraries.
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//!
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//! * `LLVM_CONFIG_PATH` - provides a path to an `llvm-config` executable
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//! * `LIBCLANG_PATH` - provides a path to a directory containing a `libclang` shared library
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//! * `LIBCLANG_STATIC_PATH` - provides a path to a directory containing LLVM and Clang static libraries
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#![allow(unused_attributes)]
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extern crate glob;
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use std::path::{Path};
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#[path="build/common.rs"]
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pub mod common;
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#[path="build/dynamic.rs"]
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pub mod dynamic;
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#[path="build/static.rs"]
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pub mod static_;
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/// Copy the file from the supplied source to the supplied destination.
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#[cfg(feature="runtime")]
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fn copy(source: &str, destination: &Path) {
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use std::fs::{File};
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use std::io::{Read, Write};
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let mut string = String::new();
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File::open(source).unwrap().read_to_string(&mut string).unwrap();
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File::create(destination).unwrap().write_all(string.as_bytes()).unwrap();
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}
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/// Generates the finding and linking code so that it may be used at runtime.
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#[cfg(feature="runtime")]
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fn main() {
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use std::env;
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if cfg!(feature="static") {
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panic!("`runtime` and `static` features can't be combined");
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}
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let out = env::var("OUT_DIR").unwrap();
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copy("build/common.rs", &Path::new(&out).join("common.rs"));
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copy("build/dynamic.rs", &Path::new(&out).join("dynamic.rs"));
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}
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/// Finds and links to the required libraries.
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#[cfg(not(feature="runtime"))]
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fn main() {
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if cfg!(feature="static") {
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static_::link();
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} else {
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dynamic::link();
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}
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if let Ok(output) = common::run_llvm_config(&["--includedir"]) {
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let directory = Path::new(output.trim_right());
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println!("cargo:include={}", directory.display());
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}
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}
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