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linker: Refactor APIs for linking dynamic libraries

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Rename `link_(dylib,framework)`, remove `link_rust_dylib`.
This commit is contained in:
Vadim Petrochenkov
2024-01-17 23:14:14 +03:00
parent 5d3d3479d7
commit 50501c6fba
2 changed files with 33 additions and 93 deletions
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109
compiler/rustc_codegen_ssa/src/back/linker.rs
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@@ -166,9 +166,10 @@ pub fn get_linker<'a>(
pub trait Linker {
fn cmd(&mut self) -> &mut Command;
fn set_output_kind(&mut self, output_kind: LinkOutputKind, out_filename: &Path);
fn link_dylib(&mut self, lib: &str, verbatim: bool, as_needed: bool);
fn link_rust_dylib(&mut self, lib: &str, path: &Path);
fn link_framework(&mut self, framework: &str, as_needed: bool);
fn link_dylib_by_name(&mut self, name: &str, verbatim: bool, as_needed: bool);
fn link_framework_by_name(&mut self, _name: &str, _verbatim: bool, _as_needed: bool) {
bug!("framework linked with unsupported linker")
}
fn link_staticlib(&mut self, lib: &str, verbatim: bool);
fn link_rlib(&mut self, lib: &Path);
fn link_whole_rlib(&mut self, lib: &Path);
@@ -432,8 +433,8 @@ impl<'a> Linker for GccLinker<'a> {
}
}
fn link_dylib(&mut self, lib: &str, verbatim: bool, as_needed: bool) {
if self.sess.target.os == "illumos" && lib == "c" {
fn link_dylib_by_name(&mut self, name: &str, verbatim: bool, as_needed: bool) {
if self.sess.target.os == "illumos" && name == "c" {
// libc will be added via late_link_args on illumos so that it will
// appear last in the library search order.
// FIXME: This should be replaced by a more complete and generic
@@ -454,7 +455,7 @@ impl<'a> Linker for GccLinker<'a> {
}
}
self.hint_dynamic();
self.cmd.arg(format!("-l{}{lib}", if verbatim && self.is_gnu { ":" } else { "" },));
self.cmd.arg(format!("-l{}{name}", if verbatim && self.is_gnu { ":" } else { "" },));
if !as_needed {
if self.sess.target.is_like_osx {
// See above FIXME comment
@@ -493,20 +494,15 @@ impl<'a> Linker for GccLinker<'a> {
self.linker_args(&["-z", "norelro"]);
}
fn link_rust_dylib(&mut self, lib: &str, _path: &Path) {
self.hint_dynamic();
self.cmd.arg(format!("-l{lib}"));
}
fn link_framework(&mut self, framework: &str, as_needed: bool) {
fn link_framework_by_name(&mut self, name: &str, _verbatim: bool, as_needed: bool) {
self.hint_dynamic();
if !as_needed {
// FIXME(81490): ld64 as of macOS 11 supports the -needed_framework
// flag but we have no way to detect that here.
// self.cmd.arg("-needed_framework").arg(framework);
// self.cmd.arg("-needed_framework").arg(name);
self.sess.dcx().emit_warn(errors::Ld64UnimplementedModifier);
}
self.cmd.arg("-framework").arg(framework);
self.cmd.arg("-framework").arg(name);
}
// Here we explicitly ask that the entire archive is included into the
@@ -845,19 +841,8 @@ impl<'a> Linker for MsvcLinker<'a> {
self.cmd.arg("/OPT:NOREF,NOICF");
}
fn link_dylib(&mut self, lib: &str, verbatim: bool, _as_needed: bool) {
self.cmd.arg(format!("{}{}", lib, if verbatim { "" } else { ".lib" }));
}
fn link_rust_dylib(&mut self, lib: &str, path: &Path) {
// When producing a dll, the MSVC linker may not actually emit a
// `foo.lib` file if the dll doesn't actually export any symbols, so we
// check to see if the file is there and just omit linking to it if it's
// not present.
let name = format!("{lib}.dll.lib");
if path.join(&name).exists() {
self.cmd.arg(name);
}
fn link_dylib_by_name(&mut self, name: &str, verbatim: bool, _as_needed: bool) {
self.cmd.arg(format!("{}{}", name, if verbatim { "" } else { ".lib" }));
}
fn link_staticlib(&mut self, lib: &str, verbatim: bool) {
@@ -899,9 +884,6 @@ impl<'a> Linker for MsvcLinker<'a> {
fn framework_path(&mut self, _path: &Path) {
bug!("frameworks are not supported on windows")
}
fn link_framework(&mut self, _framework: &str, _as_needed: bool) {
bug!("frameworks are not supported on windows")
}
fn link_whole_staticlib(&mut self, lib: &str, verbatim: bool, _search_path: &[PathBuf]) {
self.cmd.arg(format!("/WHOLEARCHIVE:{}{}", lib, if verbatim { "" } else { ".lib" }));
@@ -1073,9 +1055,9 @@ impl<'a> Linker for EmLinker<'a> {
self.cmd.arg(path);
}
fn link_dylib(&mut self, lib: &str, verbatim: bool, _as_needed: bool) {
fn link_dylib_by_name(&mut self, name: &str, verbatim: bool, _as_needed: bool) {
// Emscripten always links statically
self.link_staticlib(lib, verbatim);
self.link_staticlib(name, verbatim);
}
fn link_whole_staticlib(&mut self, lib: &str, verbatim: bool, _search_path: &[PathBuf]) {
@@ -1088,10 +1070,6 @@ impl<'a> Linker for EmLinker<'a> {
self.link_rlib(lib);
}
fn link_rust_dylib(&mut self, lib: &str, _path: &Path) {
self.link_dylib(lib, false, true);
}
fn link_rlib(&mut self, lib: &Path) {
self.add_object(lib);
}
@@ -1112,10 +1090,6 @@ impl<'a> Linker for EmLinker<'a> {
bug!("frameworks are not supported on Emscripten")
}
fn link_framework(&mut self, _framework: &str, _as_needed: bool) {
bug!("frameworks are not supported on Emscripten")
}
fn gc_sections(&mut self, _keep_metadata: bool) {
// noop
}
@@ -1249,8 +1223,8 @@ impl<'a> Linker for WasmLd<'a> {
}
}
fn link_dylib(&mut self, lib: &str, _verbatim: bool, _as_needed: bool) {
self.cmd.arg("-l").arg(lib);
fn link_dylib_by_name(&mut self, name: &str, _verbatim: bool, _as_needed: bool) {
self.cmd.arg("-l").arg(name);
}
fn link_staticlib(&mut self, lib: &str, _verbatim: bool) {
@@ -1283,14 +1257,6 @@ impl<'a> Linker for WasmLd<'a> {
fn no_relro(&mut self) {}
fn link_rust_dylib(&mut self, lib: &str, _path: &Path) {
self.cmd.arg("-l").arg(lib);
}
fn link_framework(&mut self, _framework: &str, _as_needed: bool) {
panic!("frameworks not supported")
}
fn link_whole_staticlib(&mut self, lib: &str, _verbatim: bool, _search_path: &[PathBuf]) {
self.cmd.arg("--whole-archive").arg("-l").arg(lib).arg("--no-whole-archive");
}
@@ -1398,7 +1364,7 @@ pub struct L4Bender<'a> {
}
impl<'a> Linker for L4Bender<'a> {
fn link_dylib(&mut self, _lib: &str, _verbatim: bool, _as_needed: bool) {
fn link_dylib_by_name(&mut self, _name: &str, _verbatim: bool, _as_needed: bool) {
bug!("dylibs are not supported on L4Re");
}
fn link_staticlib(&mut self, lib: &str, _verbatim: bool) {
@@ -1442,14 +1408,6 @@ impl<'a> Linker for L4Bender<'a> {
fn set_output_kind(&mut self, _output_kind: LinkOutputKind, _out_filename: &Path) {}
fn link_rust_dylib(&mut self, _: &str, _: &Path) {
panic!("Rust dylibs not supported");
}
fn link_framework(&mut self, _framework: &str, _as_needed: bool) {
bug!("frameworks not supported on L4Re");
}
fn link_whole_staticlib(&mut self, lib: &str, _verbatim: bool, _search_path: &[PathBuf]) {
self.hint_static();
self.cmd.arg("--whole-archive").arg(format!("-l{lib}"));
@@ -1571,9 +1529,9 @@ impl<'a> AixLinker<'a> {
}
impl<'a> Linker for AixLinker<'a> {
fn link_dylib(&mut self, lib: &str, _verbatim: bool, _as_needed: bool) {
fn link_dylib_by_name(&mut self, name: &str, _verbatim: bool, _as_needed: bool) {
self.hint_dynamic();
self.cmd.arg(format!("-l{lib}"));
self.cmd.arg(format!("-l{name}"));
}
fn link_staticlib(&mut self, lib: &str, _verbatim: bool) {
@@ -1626,15 +1584,6 @@ impl<'a> Linker for AixLinker<'a> {
}
}
fn link_rust_dylib(&mut self, lib: &str, _: &Path) {
self.hint_dynamic();
self.cmd.arg(format!("-l{lib}"));
}
fn link_framework(&mut self, _framework: &str, _as_needed: bool) {
bug!("frameworks not supported on AIX");
}
fn link_whole_staticlib(&mut self, lib: &str, verbatim: bool, search_path: &[PathBuf]) {
self.hint_static();
let lib = find_native_static_library(lib, verbatim, search_path, self.sess);
@@ -1844,11 +1793,7 @@ impl<'a> Linker for PtxLinker<'a> {
self.cmd.arg("-o").arg(path);
}
fn link_dylib(&mut self, _lib: &str, _verbatim: bool, _as_needed: bool) {
panic!("external dylibs not supported")
}
fn link_rust_dylib(&mut self, _lib: &str, _path: &Path) {
fn link_dylib_by_name(&mut self, _name: &str, _verbatim: bool, _as_needed: bool) {
panic!("external dylibs not supported")
}
@@ -1864,10 +1809,6 @@ impl<'a> Linker for PtxLinker<'a> {
panic!("frameworks not supported")
}
fn link_framework(&mut self, _framework: &str, _as_needed: bool) {
panic!("frameworks not supported")
}
fn full_relro(&mut self) {}
fn partial_relro(&mut self) {}
@@ -1942,11 +1883,7 @@ impl<'a> Linker for BpfLinker<'a> {
self.cmd.arg("-o").arg(path);
}
fn link_dylib(&mut self, _lib: &str, _verbatim: bool, _as_needed: bool) {
panic!("external dylibs not supported")
}
fn link_rust_dylib(&mut self, _lib: &str, _path: &Path) {
fn link_dylib_by_name(&mut self, _name: &str, _verbatim: bool, _as_needed: bool) {
panic!("external dylibs not supported")
}
@@ -1962,10 +1899,6 @@ impl<'a> Linker for BpfLinker<'a> {
panic!("frameworks not supported")
}
fn link_framework(&mut self, _framework: &str, _as_needed: bool) {
panic!("frameworks not supported")
}
fn full_relro(&mut self) {}
fn partial_relro(&mut self) {}