diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index d787ee08e849a9e2f1880e566fc5ad094fbd8304..c3861efd16af16a6a7283fee4b81c228649ef2b8 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -1987,6 +1987,11 @@ void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
   if (getTriple().getOS() == llvm::Triple::RTEMS)
     return;
 
+  // Add an include of '/include' directly. This isn't provided by default by
+  // system GCCs, but is often used with cross-compiling GCCs, and harmless to
+  // add even when Clang is acting as-if it were a system compiler.
+  addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include");
+
   addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include");
 }