Remove restrictions on cross-compiling on Windows.

This commit is contained in:
Josh Matthews 2019-05-24 16:03:47 -04:00
parent e0c95ed855
commit 0d831117ec
3 changed files with 1 additions and 51 deletions

View file

@ -9,47 +9,12 @@ use std::fmt;
use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
use std::process::Command;
use std::str;
use std::time::Instant;
fn main() {
let start = Instant::now();
let target = env::var("TARGET").unwrap();
let host = env::var("HOST").unwrap();
if target.contains("windows") && host != target {
assert_eq!(
host, "x86_64-pc-windows-msvc",
"Only cross-compiling from x64 is supported"
);
assert_eq!(
target, "i686-pc-windows-msvc",
"Only cross-compiling to x86 is supported"
);
assert!(env::var("VSINSTALLDIR").is_err());
// When cross-compiling on Windows, we need to ensure that the PATH is
// set up appropriately for the target before invoking make.
if env::var("VCVARSALL_PATH").is_err() {
panic!(
"Need to provide VCVARSALL_PATH value with path to \
vcvarsall.bat from Visual Studio installation"
);
}
let vcvars = Command::new("vcvars.bat").output().unwrap();
assert!(vcvars.status.success());
let output = str::from_utf8(&vcvars.stdout).unwrap();
for line in output.lines() {
let mut parts = line.splitn(2, '=');
if let Some(name) = parts.next() {
if let Some(value) = parts.next() {
env::set_var(name, value);
}
}
}
}
// This must use the Ninja generator -- it's the only one that
// parallelizes cmake's output properly. (Cmake generates
// separate makefiles, each of which try to build
@ -61,19 +26,6 @@ fn main() {
// We must use Ninja on Windows for this -- msbuild is painfully slow,
// and ninja is easier to install than make.
build.generator("Ninja");
// We have to explicitly specify the full path to link.exe,
// for reasons that I don't understand. If we just give
// link.exe, it tries to use script-*/out/link.exe, which of
// course does not exist.
let link = std::process::Command::new("where")
.arg("link.exe")
.output()
.unwrap();
let link_path: Vec<&str> = std::str::from_utf8(&link.stdout)
.unwrap()
.split("\r\n")
.collect();
build.define("CMAKE_LINKER", link_path[0]);
}
build.build();