1 files changed, 5 insertions, 2 deletions
diff --git a/contrib/llvm-project/clang/lib/Driver/ToolChains/RISCVToolchain.cpp b/contrib/llvm-project/clang/lib/Driver/ToolChains/RISCVToolchain.cpp
index a048765bc6d3..3491de22d371 100644
--- a/contrib/llvm-project/clang/lib/Driver/ToolChains/RISCVToolchain.cpp
+++ b/contrib/llvm-project/clang/lib/Driver/ToolChains/RISCVToolchain.cpp
@@ -201,8 +201,11 @@ void RISCV::Linker::ConstructJob(Compilation &C, const JobAction &JA,
 
   if (!Args.hasArg(options::OPT_nostdlib) &&
       !Args.hasArg(options::OPT_nodefaultlibs)) {
-    if (ToolChain.ShouldLinkCXXStdlib(Args))
-      ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
+    if (D.CCCIsCXX()) {
+      if (ToolChain.ShouldLinkCXXStdlib(Args))
+        ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
+      CmdArgs.push_back("-lm");
+    }
     CmdArgs.push_back("--start-group");
     CmdArgs.push_back("-lc");
     CmdArgs.push_back("-lgloss");