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When we cannot load libgccjit.so, show the paths that were tried

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This commit is contained in:
Antoni Boucher 2025-12-11 11:15:15 -05:00
parent 09c34cbac3
commit f0418b3461
1 changed files with 22 additions and 3 deletions
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25
src/lib.rs
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@ -98,7 +98,6 @@ use rustc_middle::ty::TyCtxt;
use rustc_middle::util::Providers;
use rustc_session::Session;
use rustc_session::config::{OptLevel, OutputFilenames};
use rustc_session::filesearch::make_target_lib_path;
use rustc_span::Symbol;
use rustc_target::spec::{Arch, RelocModel};
use tempfile::TempDir;
@ -207,18 +206,38 @@ impl CodegenBackend for GccCodegenBackend {
}
fn init(&self, sess: &Session) {
fn file_path(sysroot_path: &Path, sess: &Session) -> PathBuf {
let rustlib_path =
rustc_target::relative_target_rustlib_path(sysroot_path, &sess.host.llvm_target);
sysroot_path
.join(rustlib_path)
.join("codegen-backends")
.join("lib")
.join(sess.target.llvm_target.as_ref())
.join("libgccjit.so")
}
// We use all_paths() instead of only path() in case the path specified by --sysroot is
// invalid.
// This is the case for instance in Rust for Linux where they specify --sysroot=/dev/null.
for path in sess.opts.sysroot.all_paths() {
let libgccjit_target_lib_file =
make_target_lib_path(path, &sess.target.llvm_target).join("libgccjit.so");
let libgccjit_target_lib_file = file_path(path, sess);
if let Ok(true) = fs::exists(&libgccjit_target_lib_file) {
load_libgccjit_if_needed(&libgccjit_target_lib_file);
break;
}
}
if !gccjit::is_loaded() {
let mut paths = vec![];
for path in sess.opts.sysroot.all_paths() {
let libgccjit_target_lib_file = file_path(path, sess);
paths.push(libgccjit_target_lib_file);
}
panic!("Could not load libgccjit.so. Attempted paths: {:#?}", paths);
}
#[cfg(feature = "master")]
{
let target_cpu = target_cpu(sess);