1 files changed, 33 insertions, 0 deletions

diff --git a/recipes-devtools/clang/clang/0010-clang-Append-libunwind-to-compiler-rt-for-linking.patch b/recipes-devtools/clang/clang/0010-clang-Append-libunwind-to-compiler-rt-for-linking.patch
new file mode 100644
index 0000000..4f23d69
--- /dev/null
+++ b/recipes-devtools/clang/clang/0010-clang-Append-libunwind-to-compiler-rt-for-linking.patch
@@ -0,0 +1,33 @@
+From 3ba6f05d35c8b0c405bf62cdd93eecc5a5094165 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 25 Jan 2019 14:39:04 -0800
+Subject: [PATCH 10/18] clang: Append libunwind to compiler-rt for linking
+
+Some packages which use libgcc tend to use low level unwind functions
+too, and they are missing in compiler-rt but provided by llvm libunwind
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ clang/lib/Driver/ToolChains/CommonArgs.cpp | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
+index d7e316befa6..5f6b24e33eb 100644
+--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
++++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
+@@ -1191,6 +1191,12 @@ void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,
+   switch (RLT) {
+   case ToolChain::RLT_CompilerRT:
+     CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
++    CmdArgs.push_back("--as-needed");
++    CmdArgs.push_back("-l:libunwind.a");
++    CmdArgs.push_back("-lpthread");
++    CmdArgs.push_back("-ldl");
++    CmdArgs.push_back("--no-as-needed");
++
+     break;
+   case ToolChain::RLT_Libgcc:
+     // Make sure libgcc is not used under MSVC environment by default
+-- 
+2.20.1
+