2 use std::path::{Path, PathBuf};
4 use crate::errors::RanlibFailure;
6 use rustc_codegen_ssa::back::archive::{ArchiveBuilder, ArchiveBuilderBuilder};
7 use rustc_session::Session;
9 use rustc_session::cstore::DllImport;
11 struct ArchiveConfig<'a> {
14 use_gnu_style_archive: bool,
26 pub struct ArArchiveBuilderBuilder;
28 impl ArchiveBuilderBuilder for ArArchiveBuilderBuilder {
29 fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box<dyn ArchiveBuilder<'a> + 'a> {
30 let config = ArchiveConfig {
33 // FIXME test for linux and System V derivatives instead
34 use_gnu_style_archive: sess.target.options.archive_format == "gnu",
37 Box::new(ArArchiveBuilder {
44 fn create_dll_import_lib(
48 _dll_imports: &[DllImport],
55 pub struct ArArchiveBuilder<'a> {
56 config: ArchiveConfig<'a>,
57 src_archives: Vec<(PathBuf, ar::Archive<File>)>,
58 // Don't use `HashMap` here, as the order is important. `rust.metadata.bin` must always be at
59 // the end of an archive for linkers to not get confused.
60 entries: Vec<(String, ArchiveEntry)>,
63 impl<'a> ArchiveBuilder<'a> for ArArchiveBuilder<'a> {
64 fn add_file(&mut self, file: &Path) {
66 file.file_name().unwrap().to_str().unwrap().to_string(),
67 ArchiveEntry::File(file.to_owned()),
74 mut skip: Box<dyn FnMut(&str) -> bool + 'static>,
75 ) -> std::io::Result<()> {
76 let mut archive = ar::Archive::new(std::fs::File::open(&archive_path)?);
77 let archive_index = self.src_archives.len();
80 while let Some(entry) = archive.next_entry() {
82 let file_name = String::from_utf8(entry.header().identifier().to_vec())
83 .map_err(|err| std::io::Error::new(std::io::ErrorKind::InvalidData, err))?;
84 if !skip(&file_name) {
86 .push((file_name, ArchiveEntry::FromArchive { archive_index, entry_index: i }));
91 self.src_archives.push((archive_path.to_owned(), archive));
95 fn build(mut self: Box<Self>, output: &Path) -> bool {
96 use std::process::Command;
98 fn add_file_using_ar(archive: &Path, file: &Path) {
100 .arg("r") // add or replace file
101 .arg("-c") // silence created file message
108 enum BuilderKind<'a> {
109 Bsd(ar::Builder<File>),
110 Gnu(ar::GnuBuilder<File>),
114 let mut builder = if self.config.use_native_ar {
115 BuilderKind::NativeAr(output)
116 } else if self.config.use_gnu_style_archive {
117 BuilderKind::Gnu(ar::GnuBuilder::new(
118 File::create(output).unwrap(),
121 .map(|(name, _)| name.as_bytes().to_vec())
125 BuilderKind::Bsd(ar::Builder::new(File::create(output).unwrap()))
128 let any_members = !self.entries.is_empty();
131 for (entry_name, entry) in self.entries.into_iter() {
133 ArchiveEntry::FromArchive {
137 let (ref src_archive_path, ref mut src_archive) =
138 self.src_archives[archive_index];
139 let entry = src_archive.jump_to_entry(entry_index).unwrap();
140 let header = entry.header().clone();
143 BuilderKind::Bsd(ref mut builder) => {
144 builder.append(&header, entry).unwrap()
146 BuilderKind::Gnu(ref mut builder) => {
147 builder.append(&header, entry).unwrap()
149 BuilderKind::NativeAr(archive_file) => {
152 .arg(src_archive_path)
156 add_file_using_ar(archive_file, Path::new(&entry_name));
157 std::fs::remove_file(entry_name).unwrap();
161 ArchiveEntry::File(file) =>
163 BuilderKind::Bsd(ref mut builder) => {
165 .append_file(entry_name.as_bytes(), &mut File::open(file).expect("file for bsd builder"))
168 BuilderKind::Gnu(ref mut builder) => {
170 .append_file(entry_name.as_bytes(), &mut File::open(&file).expect(&format!("file {:?} for gnu builder", file)))
173 BuilderKind::NativeAr(archive_file) => add_file_using_ar(archive_file, &file),
179 std::mem::drop(builder);
181 // Run ranlib to be able to link the archive
183 std::process::Command::new("ranlib").arg(output).status().expect("Couldn't run ranlib");
185 if !status.success() {
186 self.config.sess.emit_fatal(RanlibFailure::new(status.code()));