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build.rs: Default variables

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So we can build without cmake
This commit is contained in:
Fabian Boehm 2024-01-15 20:32:32 +01:00
parent 9747ab19d1
commit a5e35abeba
1 changed files with 37 additions and 9 deletions
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46
build.rs
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@ -6,15 +6,7 @@ use std::error::Error;
use std::path::{Path, PathBuf};
fn main() {
for key in ["DOCDIR", "DATADIR", "SYSCONFDIR", "BINDIR", "LOCALEDIR"] {
if let Ok(val) = env::var(key) {
// Forward some CMake config
if val.is_empty() {
panic!("{} is empty!", key);
}
println!("cargo:rustc-env={key}={val}");
}
}
setup_paths();
let rust_dir = env!("CARGO_MANIFEST_DIR");
// Add our default to enable tools that don't go through CMake, like "cargo test" and the
@ -180,3 +172,39 @@ fn have_gettext(target: &Target) -> Result<bool, Box<dyn Error>> {
}
}
}
fn get_path(name: &str, default: &str, onvar: PathBuf) -> PathBuf {
let mut var = PathBuf::from(env::var(name).unwrap_or(default.to_string()));
if var.is_relative() {
var = onvar.join(var);
}
var
}
fn setup_paths() {
rsconf::rebuild_if_env_changed("PREFIX");
rsconf::rebuild_if_env_changed("DATADIR");
rsconf::rebuild_if_env_changed("BINDIR");
rsconf::rebuild_if_env_changed("SYSCONFDIR");
rsconf::rebuild_if_env_changed("LOCALEDIR");
rsconf::rebuild_if_env_changed("DOCDIR");
let prefix = PathBuf::from(env::var("PREFIX").unwrap_or("/usr/local".to_string()));
if prefix.is_relative() {
panic!("Can't have relative prefix");
}
println!("cargo:rustc-env=PREFIX={}", prefix.to_str().unwrap());
let datadir = get_path("DATADIR", "share/", prefix.clone());
println!("cargo:rustc-env=DATADIR={}", datadir.to_str().unwrap());
let bindir = get_path("BINDIR", "bin/", prefix.clone());
println!("cargo:rustc-env=BINDIR={}", bindir.to_str().unwrap());
let sysconfdir = get_path("SYSCONFDIR", "etc/", datadir.clone());
println!(
"cargo:rustc-env=SYSCONFDIR={}",
sysconfdir.to_str().unwrap()
);
let localedir = get_path("LOCALEDIR", "locale/", datadir.clone());
println!("cargo:rustc-env=LOCALEDIR={}", localedir.to_str().unwrap());
let docdir = get_path("DOCDIR", "doc/fish", datadir.clone());
println!("cargo:rustc-env=DOCDIR={}", docdir.to_str().unwrap());
}