1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
use crate::config::ConfigInfo;
use crate::utils::{
get_toolchain, run_command_with_output_and_env_no_err, rustc_toolchain_version_info,
rustc_version_info,
};
use std::collections::HashMap;
use std::ffi::OsStr;
use std::path::PathBuf;
fn args() -> Result<Option<Vec<String>>, String> {
// We skip the binary and the "cargo" option.
if let Some("--help") = std::env::args().skip(2).next().as_deref() {
usage();
return Ok(None);
}
let args = std::env::args().skip(2).collect::<Vec<_>>();
if args.is_empty() {
return Err(
"Expected at least one argument for `cargo` subcommand, found none".to_string(),
);
}
Ok(Some(args))
}
fn usage() {
println!(
r#"
`cargo` command help:
[args] : Arguments to be passed to the cargo command
--help : Show this help
"#
)
}
pub fn run() -> Result<(), String> {
let args = match args()? {
Some(a) => a,
None => return Ok(()),
};
// We first need to go to the original location to ensure that the config setup will go as
// expected.
let current_dir = std::env::current_dir()
.and_then(|path| path.canonicalize())
.map_err(|error| format!("Failed to get current directory path: {:?}", error))?;
let current_exe = std::env::current_exe()
.and_then(|path| path.canonicalize())
.map_err(|error| format!("Failed to get current exe path: {:?}", error))?;
let mut parent_dir = current_exe
.components()
.map(|comp| comp.as_os_str())
.collect::<Vec<_>>();
// We run this script from "build_system/target/release/y", so we need to remove these elements.
for to_remove in &["y", "release", "target", "build_system"] {
if parent_dir
.last()
.map(|part| part == to_remove)
.unwrap_or(false)
{
parent_dir.pop();
} else {
return Err(format!(
"Build script not executed from `build_system/target/release/y` (in path {})",
current_exe.display(),
));
}
}
let parent_dir = PathBuf::from(parent_dir.join(&OsStr::new("/")));
std::env::set_current_dir(&parent_dir).map_err(|error| {
format!(
"Failed to go to `{}` folder: {:?}",
parent_dir.display(),
error
)
})?;
let mut env: HashMap<String, String> = std::env::vars().collect();
ConfigInfo::default().setup(&mut env, false)?;
let toolchain = get_toolchain()?;
let toolchain_version = rustc_toolchain_version_info(&toolchain)?;
let default_version = rustc_version_info(None)?;
if toolchain_version != default_version {
println!(
"rustc_codegen_gcc is built for {} but the default rustc version is {}.",
toolchain_version.short, default_version.short,
);
println!("Using {}.", toolchain_version.short);
}
// We go back to the original folder since we now have set up everything we needed.
std::env::set_current_dir(¤t_dir).map_err(|error| {
format!(
"Failed to go back to `{}` folder: {:?}",
current_dir.display(),
error
)
})?;
let rustflags = env.get("RUSTFLAGS").cloned().unwrap_or_default();
env.insert("RUSTDOCFLAGS".to_string(), rustflags);
let toolchain = format!("+{}", toolchain);
let mut command: Vec<&dyn AsRef<OsStr>> = vec![&"cargo", &toolchain];
for arg in &args {
command.push(arg);
}
if run_command_with_output_and_env_no_err(&command, None, Some(&env)).is_err() {
std::process::exit(1);
}
Ok(())
}
|
