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cab1d0bceb
Abstract common invocations of "cargo", that do not require copying the generated bindgen file or setting up MESON_BUILD_ROOT. In the future these could also do completely without cargo and invoke the underlying programs directly. Reviewed-by: Junjie Mao <junjie.mao@hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
48 lines
1.6 KiB
Rust
48 lines
1.6 KiB
Rust
// Copyright 2024, Linaro Limited
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// Author(s): Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
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// SPDX-License-Identifier: GPL-2.0-or-later
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#[cfg(unix)]
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use std::os::unix::fs::symlink as symlink_file;
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#[cfg(windows)]
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use std::os::windows::fs::symlink_file;
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use std::{env, fs::remove_file, io::Result, path::Path};
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use version_check as rustc;
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fn main() -> Result<()> {
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// Placing bindings.inc.rs in the source directory is supported
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// but not documented or encouraged.
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let path = env::var("MESON_BUILD_ROOT")
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.unwrap_or_else(|_| format!("{}/src", env!("CARGO_MANIFEST_DIR")));
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let file = format!("{}/bindings.inc.rs", path);
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let file = Path::new(&file);
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if !Path::new(&file).exists() {
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panic!(concat!(
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"\n",
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" No generated C bindings found! Maybe you wanted one of\n",
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" `make clippy`, `make rustfmt`, `make rustdoc`?\n",
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"\n",
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" For other uses of `cargo`, start a subshell with\n",
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" `pyvenv/bin/meson devenv`, or point MESON_BUILD_ROOT to\n",
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" the top of the build tree."
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));
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}
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let out_dir = env::var("OUT_DIR").unwrap();
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let dest_path = format!("{}/bindings.inc.rs", out_dir);
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let dest_path = Path::new(&dest_path);
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if dest_path.symlink_metadata().is_ok() {
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remove_file(dest_path)?;
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}
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symlink_file(file, dest_path)?;
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// Check for available rustc features
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if rustc::is_min_version("1.77.0").unwrap_or(false) {
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println!("cargo:rustc-cfg=has_offset_of");
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}
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println!("cargo:rerun-if-changed=build.rs");
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Ok(())
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}
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