2016-01-25 05:56:11 +00:00
|
|
|
/*
|
|
|
|
* Copyright 2016 Nathan Fiedler
|
|
|
|
*
|
|
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
* you may not use this file except in compliance with the License.
|
|
|
|
* You may obtain a copy of the License at
|
|
|
|
*
|
|
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
*
|
|
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
* See the License for the specific language governing permissions and
|
|
|
|
* limitations under the License.
|
|
|
|
*/
|
|
|
|
|
|
|
|
use std::error::Error;
|
|
|
|
use std::fs::File;
|
|
|
|
use std::io::prelude::*;
|
|
|
|
use std::path::Path;
|
|
|
|
use std::process::Command;
|
|
|
|
|
|
|
|
static HEADER: &'static str = "#include <wand/MagickWand.h>\n";
|
2015-12-23 19:34:51 +00:00
|
|
|
|
|
|
|
fn main() {
|
2016-01-25 05:56:11 +00:00
|
|
|
//
|
|
|
|
// If the MagickWand bindings are missing, generate them using
|
|
|
|
// rust-bindgen.
|
|
|
|
//
|
|
|
|
let bindings_path = Path::new("src/bindings.rs");
|
|
|
|
if !bindings_path.exists() {
|
|
|
|
let bindgen_path = Path::new("rust-bindgen");
|
|
|
|
if !bindgen_path.exists() {
|
|
|
|
Command::new("git")
|
|
|
|
.arg("clone")
|
|
|
|
.arg("https://github.com/crabtw/rust-bindgen.git")
|
|
|
|
.status().unwrap();
|
|
|
|
// Checkout a version of rust-bindgen that is known to work;
|
|
|
|
// more recent versions produce code that does not compile (the
|
|
|
|
// commit after 8a51860 changes the way enums are generated).
|
|
|
|
Command::new("git")
|
|
|
|
.arg("checkout")
|
|
|
|
.arg("8a51860")
|
|
|
|
.current_dir("rust-bindgen")
|
|
|
|
.status().unwrap();
|
|
|
|
Command::new("cargo")
|
|
|
|
.arg("build")
|
|
|
|
.current_dir("rust-bindgen")
|
|
|
|
.status().unwrap();
|
|
|
|
}
|
|
|
|
// Create the header file that rust-bindgen needs as input.
|
|
|
|
let mut gen_h = match File::create("gen.h") {
|
|
|
|
Err(why) => panic!("could not create gen.h file: {}", Error::description(&why)),
|
|
|
|
Ok(file) => file
|
|
|
|
};
|
|
|
|
match gen_h.write_all(HEADER.as_bytes()) {
|
|
|
|
Err(why) => panic!("could not write to gen.h: {}", Error::description(&why)),
|
|
|
|
Ok(_) => ()
|
|
|
|
};
|
|
|
|
// Get the compiler and linker flags for the MagickWand library.
|
|
|
|
let mw_cflags_output = Command::new("MagickWand-config")
|
|
|
|
.arg("--cflags")
|
|
|
|
.output().unwrap();
|
|
|
|
let mw_cflags = std::str::from_utf8(&mw_cflags_output.stdout).unwrap().trim();
|
|
|
|
let mw_cflags_arr: Vec<&str> = mw_cflags.split_whitespace().collect();
|
|
|
|
let mw_ldflags_output = Command::new("MagickWand-config")
|
|
|
|
.arg("--ldflags")
|
|
|
|
.output().unwrap();
|
|
|
|
let mw_ldflags = std::str::from_utf8(&mw_ldflags_output.stdout).unwrap().trim();
|
|
|
|
let mw_ldflags_arr: Vec<&str> = mw_ldflags.split_whitespace().collect();
|
|
|
|
// Combine all of that in the invocation of rust-bindgen.
|
|
|
|
Command::new("./rust-bindgen/target/debug/bindgen")
|
|
|
|
// always include this even though it only makes sense on Mac to
|
|
|
|
// work around https://github.com/crabtw/rust-bindgen/issues/89
|
|
|
|
.env("DYLD_LIBRARY_PATH", "/Library/Developer/CommandLineTools/usr/lib")
|
|
|
|
.args(&mw_cflags_arr[..])
|
|
|
|
.arg("-builtins")
|
|
|
|
.arg("-o")
|
|
|
|
.arg("src/bindings.rs")
|
|
|
|
.args(&mw_ldflags_arr[..])
|
|
|
|
.arg("gen.h")
|
|
|
|
.status().unwrap();
|
|
|
|
// how to get the output of the command...
|
|
|
|
// let output = Commad::new(...).output().unwrap();
|
|
|
|
// let out = std::str::from_utf8(&output.stdout).unwrap();
|
|
|
|
// println!("cargo:output={}", out);
|
|
|
|
// let err = std::str::from_utf8(&output.stderr).unwrap();
|
|
|
|
// println!("cargo:error={}", err);
|
|
|
|
match std::fs::remove_file("gen.h") {
|
|
|
|
Err(why) => panic!("could not remove gen.h: {}", Error::description(&why)),
|
|
|
|
Ok(_) => ()
|
|
|
|
}
|
|
|
|
}
|
2015-12-23 19:34:51 +00:00
|
|
|
// For the sake of easily building and testing on Mac, include the path
|
|
|
|
// to MagickWand. Chances are MagickWand is in /usr/local/lib, or
|
|
|
|
// somewhere else that rustc can find it.
|
|
|
|
println!("cargo:rustc-link-search=native=/usr/local/lib");
|
|
|
|
}
|