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use std::error::Error;
fn main() -> Result<(), Box<dyn Error>> {
if cfg!(windows) && try_registry() {
return Ok(());
}
system_deps::Config::new().probe()?;
Ok(())
}
#[cfg(not(windows))]
fn try_registry() -> bool {
false
}
#[cfg(windows)]
fn try_registry() -> bool {
use std::{fs, path::PathBuf};
use winreg::{enums::*, RegKey};
if !build::cargo_cfg_windows() {
eprintln!("cross compiling. disabling registry detection.");
return false;
}
let hklm = RegKey::predef(HKEY_LOCAL_MACHINE);
let key = match hklm.open_subkey("SOFTWARE\\GnuPG") {
Ok(k) => k,
Err(_) => {
// check if we are on 64bit windows but have 32bit GnuPG installed
match hklm.open_subkey("SOFTWARE\\WOW6432Node\\GnuPG") {
Ok(k) => {
// found 32bit library
if build::cargo_cfg_pointer_width() == 32 {
eprintln!("compile using i586/686 target.");
return false;
} else {
k
}
}
Err(_) => {
eprintln!("unable to retrieve install location");
return false;
}
}
}
};
let root = match key.get_value::<String, _>("Install Directory") {
Ok(v) => PathBuf::from(v),
Err(_) => {
eprintln!("unable to retrieve install location");
return false;
}
};
println!("detected install via registry: {}", root.display());
if root.join("lib/libgpg-error.imp").exists() {
if let Err(e) = fs::copy(
root.join("lib/libgpg-error.imp"),
build::out_dir().join("libgpg-error.a"),
) {
eprintln!("unable to rename library: {e}");
return false;
}
}
build::rustc_link_search(build::out_dir());
build::rustc_link_lib("gpg-error");
true
}
|
