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Auto merge of #115120 - icedrocket:ignore-strip-on-msvc, r=michaelwoerister

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Ignore `-C strip` on MSVC

tl;dr - Define `-Cstrip` to only ever affect the binary; no other build artifacts.

This is necessary to improve cross-platform behavior consistency: if someone wanted debug information to be contained only in separate files on all platforms, they would set `-Cstrip=symbols` and `-Csplit-debuginfo=packed`, but this would result in no PDB files on MSVC.

Resolves #114215
This commit is contained in:
bors 2024-04-22 12:05:39 +00:00
commit 7f2fc33da6
4 changed files with 100 additions and 54 deletions
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73
compiler/rustc_codegen_ssa/src/back/linker.rs
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@ -902,52 +902,45 @@ impl<'a> Linker for MsvcLinker<'a> {
}
}
fn debuginfo(&mut self, strip: Strip, natvis_debugger_visualizers: &[PathBuf]) {
match strip {
Strip::None => {
// This will cause the Microsoft linker to generate a PDB file
// from the CodeView line tables in the object files.
self.cmd.arg("/DEBUG");
fn debuginfo(&mut self, _strip: Strip, natvis_debugger_visualizers: &[PathBuf]) {
// This will cause the Microsoft linker to generate a PDB file
// from the CodeView line tables in the object files.
self.cmd.arg("/DEBUG");
// Default to emitting only the file name of the PDB file into
// the binary instead of the full path. Emitting the full path
// may leak private information (such as user names).
// See https://github.com/rust-lang/rust/issues/87825.
//
// This default behavior can be overridden by explicitly passing
// `-Clink-arg=/PDBALTPATH:...` to rustc.
self.cmd.arg("/PDBALTPATH:%_PDB%");
// Default to emitting only the file name of the PDB file into
// the binary instead of the full path. Emitting the full path
// may leak private information (such as user names).
// See https://github.com/rust-lang/rust/issues/87825.
//
// This default behavior can be overridden by explicitly passing
// `-Clink-arg=/PDBALTPATH:...` to rustc.
self.cmd.arg("/PDBALTPATH:%_PDB%");
// This will cause the Microsoft linker to embed .natvis info into the PDB file
let natvis_dir_path = self.sess.sysroot.join("lib\\rustlib\\etc");
if let Ok(natvis_dir) = fs::read_dir(&natvis_dir_path) {
for entry in natvis_dir {
match entry {
Ok(entry) => {
let path = entry.path();
if path.extension() == Some("natvis".as_ref()) {
let mut arg = OsString::from("/NATVIS:");
arg.push(path);
self.cmd.arg(arg);
}
}
Err(error) => {
self.sess.dcx().emit_warn(errors::NoNatvisDirectory { error });
}
// This will cause the Microsoft linker to embed .natvis info into the PDB file
let natvis_dir_path = self.sess.sysroot.join("lib\\rustlib\\etc");
if let Ok(natvis_dir) = fs::read_dir(&natvis_dir_path) {
for entry in natvis_dir {
match entry {
Ok(entry) => {
let path = entry.path();
if path.extension() == Some("natvis".as_ref()) {
let mut arg = OsString::from("/NATVIS:");
arg.push(path);
self.cmd.arg(arg);
}
}
Err(error) => {
self.sess.dcx().emit_warn(errors::NoNatvisDirectory { error });
}
}
}
}
// This will cause the Microsoft linker to embed .natvis info for all crates into the PDB file
for path in natvis_debugger_visualizers {
let mut arg = OsString::from("/NATVIS:");
arg.push(path);
self.cmd.arg(arg);
}
}
Strip::Debuginfo | Strip::Symbols => {
self.cmd.arg("/DEBUG:NONE");
}
// This will cause the Microsoft linker to embed .natvis info for all crates into the PDB file
for path in natvis_debugger_visualizers {
let mut arg = OsString::from("/NATVIS:");
arg.push(path);
self.cmd.arg(arg);
}
}