1 From 78e15cfed8228b7abf819271154133afaa9520a3 Mon Sep 17 00:00:00 2001
2 From: Matthew Maurer <mmaurer@google.com>
3 Date: Thu, 13 Jun 2019 11:30:54 -0700
4 Subject: [PATCH 1/2] Add clang specific flags
5 
6 * Use compiler-rt to provide __muloti4
7 * Tell it to still pull in gcc_s for unwinding
8 ---
9  src/trans/codegen_c.cpp | 6 ++++++
10  1 file changed, 6 insertions(+)
11 
12 diff --git a/src/trans/codegen_c.cpp b/src/trans/codegen_c.cpp
13 index 2ab4ff35..8c2e1ce6 100644
14 --- a/src/trans/codegen_c.cpp
15 +++ b/src/trans/codegen_c.cpp
16 @@ -638,6 +638,12 @@ namespace {
17                  args.push_back(m_outfile_path_c.c_str());
18                  if( is_executable )
19                  {
20 +                    // TODO Only pass this to clang
21 +                    // Needed with clang for __muloti4
22 +                    args.push_back("--rtlib=compiler-rt");
23 +                    // Still link in unwind runtime &c
24 +                    args.push_back("-lgcc_s");
25 +
26                      for( const auto& crate : m_crate.m_ext_crates )
27                      {
28                          args.push_back(crate.second.m_path + ".o");
29 --
30 2.22.0.410.gd8fdbe21b5-goog
31 
32