asonix/magick-rust
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place generated files in OUT_DIR

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This commit is contained in:
Mattis Marjak 2016-05-11 16:52:15 +03:00
parent a5cb97d3cf
commit 85a4b97b70
2 changed files with 28 additions and 14 deletions
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38
build.rs
View file

@ -28,13 +28,14 @@ fn main() {
// 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");
let bindings_path_str = concat!(env!("OUT_DIR"), "/bindings.rs");
if !Path::new(bindings_path_str).exists() {
let bindgen_path = Path::new(concat!(env!("OUT_DIR"), "/rust-bindgen"));
if !bindgen_path.exists() {
Command::new("git")
.arg("clone")
.arg("https://github.com/crabtw/rust-bindgen.git")
.arg(bindgen_path)
.status().unwrap();
// Checkout a version of rust-bindgen that is known to work;
// more recent versions produce code that does not compile (the
@ -42,26 +43,35 @@ fn main() {
Command::new("git")
.arg("checkout")
.arg("8a51860")
.current_dir("rust-bindgen")
.current_dir(bindgen_path)
.status().unwrap();
}
let mut bindgen_bin = bindgen_path.to_path_buf();
bindgen_bin.push("target/debug/bindgen");
if !bindgen_bin.exists() {
Command::new("cargo")
.arg("build")
.current_dir("rust-bindgen")
.current_dir(bindgen_path)
.status().unwrap();
}
// Ensure MagickWand-config is in the PATH and report clearly if not.
if !Command::new("which").arg("MagickWand-config").status().unwrap().success() {
panic!("MagickWand-config not in the PATH, please install ImageMagick");
}
let gen_h_path = concat!(env!("OUT_DIR"), "/gen.h");
// 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)),
let mut gen_h = match File::create(gen_h_path) {
Err(why) => panic!("could not create {} file: {}", gen_h_path, 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)),
Err(why) => panic!("could not write to {}: {}", gen_h_path, Error::description(&why)),
Ok(_) => ()
};
// Get the compiler and linker flags for the MagickWand library.
let mw_cflags_output = Command::new("MagickWand-config")
.arg("--cflags")
@ -73,8 +83,10 @@ fn main() {
.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.
let mut cmd = &mut Command::new("./rust-bindgen/target/debug/bindgen");
let mut cmd = &mut Command::new(bindgen_bin);
if cfg!(target_os = "macos") {
// Mac requires that the xcode tools are installed so that
// rustc can find the clang.dylib file. See also issue
@ -88,9 +100,9 @@ fn main() {
cmd.args(&mw_cflags_arr[..])
.arg("-builtins")
.arg("-o")
.arg("src/bindings.rs")
.arg(bindings_path_str)
.args(&mw_ldflags_arr[..])
.arg("gen.h")
.arg(gen_h_path)
.status().unwrap();
// how to get the output of the command...
// let output = Commad::new(...).output().unwrap();
@ -98,8 +110,8 @@ fn main() {
// 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)),
match std::fs::remove_file(gen_h_path) {
Err(why) => panic!("could not remove {}: {}", gen_h_path, Error::description(&why)),
Ok(_) => ()
}
}

4
src/lib.rs
View file

@ -36,7 +36,9 @@ use std::ptr;
use libc::{c_uint, c_double, c_void};
use filters::FilterType;
mod bindings;
mod bindings {
include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
}
/// MagickWand is a Rustic wrapper to the Rust bindings to ImageMagick.
///