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Improve integration of llvm's libunwind

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sergesanspaille 2022-09-09 10:39:48 +02:00
parent f15eec4d81
commit df64681647
2 changed files with 50 additions and 0 deletions
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45
0001-Take-into-account-Fedora-Specific-install-dir-for-li.patch Normal file
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@ -0,0 +1,45 @@
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

5
clang.spec
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@ -72,6 +72,8 @@ Patch6: 0001-Mark-fopenmp-implicit-rpath-as-NoArgumentUnused.patch
# TODO: Drop once updating to 15.0.1 or newer.
Patch7: 0001-Clang-15.0.1-Downgrade-implicit-int-and-implicit-fun.patch
Patch8: 0001-Take-into-account-Fedora-Specific-install-dir-for-li.patch
%if %{without compat_build}
# Patches for clang-tools-extra
# See https://reviews.llvm.org/D120301
@ -596,6 +598,9 @@ false
%endif
%changelog
* Sat Sep 17 2022 sguelton@redhat.com - 15.0.0-3
- Improve integration of llvm's libunwind
* Wed Sep 14 2022 Nikita Popov <npopov@redhat.com> - 15.0.0-2
- Downgrade implicit int and implicit function declaration to warning only