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From 78e15cfed8228b7abf819271154133afaa9520a3 Mon Sep 17 00:00:00 2001
From: Matthew Maurer <mmaurer@google.com>
Date: Thu, 13 Jun 2019 11:30:54 -0700
Subject: [PATCH 1/2] Add clang specific flags
* Use compiler-rt to provide __muloti4
* Tell it to still pull in gcc_s for unwinding
---
src/trans/codegen_c.cpp | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/trans/codegen_c.cpp b/src/trans/codegen_c.cpp
index 2ab4ff35..8c2e1ce6 100644
--- a/src/trans/codegen_c.cpp
+++ b/src/trans/codegen_c.cpp
@@ -638,6 +638,12 @@ namespace {
args.push_back(m_outfile_path_c.c_str());
if( is_executable )
{
+ // TODO Only pass this to clang
+ // Needed with clang for __muloti4
+ args.push_back("--rtlib=compiler-rt");
+ // Still link in unwind runtime &c
+ args.push_back("-lgcc_s");
+
for( const auto& crate : m_crate.m_ext_crates )
{
args.push_back(crate.second.m_path + ".o");
--
2.22.0.410.gd8fdbe21b5-goog