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ldc/SOURCES/0001-Revert-Linux-Don-t-def...

51 lines
1.9 KiB

From f3e10a9aee4db798b5ac4a8b5cba9c037dff3faa Mon Sep 17 00:00:00 2001
From: Kalev Lember <klember@redhat.com>
Date: Mon, 19 Dec 2022 13:58:03 +0100
Subject: [PATCH] Revert "Linux: Don't default to ld.gold linker"
Keep on using ld.gold on RHEL 8 and 9 where using ldc with ld.bfd breaks
gtkd and leads to crashing tilix.
https://bugzilla.redhat.com/show_bug.cgi?id=2134875
This reverts commit e125411e988679dfa8cbfc9dcfc05524a37589f7.
---
driver/linker-gcc.cpp | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/driver/linker-gcc.cpp b/driver/linker-gcc.cpp
index a53936a9aa..5ae90ce650 100644
--- a/driver/linker-gcc.cpp
+++ b/driver/linker-gcc.cpp
@@ -599,12 +599,22 @@ void ArgsBuilder::build(llvm::StringRef outputPath,
void ArgsBuilder::addLinker() {
llvm::StringRef linker = opts::linker;
- // Default to ld.bfd for Android (placing .tdata and .tbss sections adjacent
- // to each other as required by druntime's rt.sections_android, contrary to
- // gold and lld as of Android NDK r21d).
- if (global.params.targetTriple->getEnvironment() == llvm::Triple::Android &&
+ // We have a default linker preference for Linux targets. It can be disabled
+ // via `-linker=` (explicitly empty).
+ if (global.params.targetTriple->isOSLinux() &&
opts::linker.getNumOccurrences() == 0) {
- linker = "bfd";
+ // Default to ld.bfd for Android (placing .tdata and .tbss sections adjacent
+ // to each other as required by druntime's rt.sections_android, contrary to
+ // gold and lld as of Android NDK r21d).
+ if (global.params.targetTriple->getEnvironment() == llvm::Triple::Android) {
+ linker = "bfd";
+ }
+ // Otherwise default to ld.gold for Linux due to ld.bfd issues with ThinLTO
+ // (see #2278) and older bfd versions stripping llvm.used symbols (e.g.,
+ // ModuleInfo refs) with --gc-sections (see #2870).
+ else {
+ linker = "gold";
+ }
}
if (!linker.empty())
--
2.39.0