0001-Take-into-account-Fedora-Specific-install-dir-for-li.patch

From a85305a801c39720d7ec1c9441a88fef1ac19435 Mon Sep 17 00:00:00 2001
From: serge-sans-paille <sguelton@redhat.com>
Date: Fri, 9 Sep 2022 10:17:01 +0200
Subject: [PATCH] Take into account Fedora Specific install dir for libunwind

---
 clang/lib/Driver/ToolChains/CommonArgs.cpp | 8 +++++++-
 clang/test/Driver/linux-ld.c               | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 443725f..c1401a6 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -1529,7 +1529,13 @@ static void AddUnwindLibrary(const ToolChain &TC, const Driver &D,
       CmdArgs.push_back("-lgcc_s");
     break;
   }
-  case ToolChain::UNW_CompilerRT:
+  case ToolChain::UNW_CompilerRT: {
+    SmallString<256> DefaultLibPath =
+        llvm::sys::path::parent_path(TC.getDriver().Dir);
+    llvm::sys::path::append(DefaultLibPath, Twine("lib") + CLANG_LIBDIR_SUFFIX);
+    CmdArgs.push_back(
+        strdup(("-L" + DefaultLibPath + "/llvm-unwind").str().c_str()));
+  }
     if (TC.getTriple().isOSAIX()) {
       // AIX only has libunwind as a shared library. So do not pass
       // anything in if -static is specified.
diff --git a/clang/test/Driver/linux-ld.c b/clang/test/Driver/linux-ld.c
index e76b35d..dfb8eca 100644
--- a/clang/test/Driver/linux-ld.c
+++ b/clang/test/Driver/linux-ld.c
@@ -299,7 +299,7 @@
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANG-ANDROID-STATIC %s
 // CHECK-CLANG-ANDROID-STATIC: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
-// CHECK-CLANG-ANDROID-STATIC: "--start-group" "{{[^"]*}}{{/|\\\\}}libclang_rt.builtins-aarch64-android.a" "-l:libunwind.a" "-lc" "--end-group"
+// CHECK-CLANG-ANDROID-STATIC: "--start-group" "{{[^"]*}}{{/|\\\\}}libclang_rt.builtins-aarch64-android.a" "-L{{[^"]*}}{{/|\\\\}}llvm-unwind" "-l:libunwind.a" "-lc" "--end-group"
 //
 // RUN: %clang -### %s 2>&1      \
 // RUN:     --target=x86_64-unknown-linux -rtlib=platform --unwindlib=platform \
-- 
1.8.3.1