diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index aff70bc..e65abae 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2637,11 +2637,13 @@
 
   if (!Args.hasArg(options::OPT_nostdlib) &&
       !Args.hasArg(options::OPT_nodefaultlibs)) {
+    if (D.CCCIsCXX) {
+      CmdArgs.push_back("-lstdc++");
+      CmdArgs.push_back("-lm");
+    }
     // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
     // the default system libraries. Just mimic this for now.
     CmdArgs.push_back("-lgcc");
-    if (D.CCCIsCXX)
-      CmdArgs.push_back("-lstdc++");
     if (Args.hasArg(options::OPT_static)) {
       CmdArgs.push_back("-lgcc_eh");
     } else {