Author: Wilfried (justxi) Holzke

Adopted from https://github.com/justxi/rocm/blob/master/sys-devel/llvm-roc/files/llvm-roc-4.0.0-remove-isystem-usr-include.patch

Index: llvm-project-rocm-4.0.0/clang/lib/Driver/ToolChains/AMDGPU.cpp
===================================================================
--- llvm-project-rocm-4.0.0.orig/clang/lib/Driver/ToolChains/AMDGPU.cpp
+++ llvm-project-rocm-4.0.0/clang/lib/Driver/ToolChains/AMDGPU.cpp
@@ -326,11 +326,6 @@ void RocmInstallationDetector::AddHIPInc
     //
     // ROCm 3.5 does not fully support the wrapper headers. Therefore it needs
     // a workaround.
-    SmallString<128> P(D.ResourceDir);
-    if (UsesRuntimeWrapper)
-      llvm::sys::path::append(P, "include", "cuda_wrappers");
-    CC1Args.push_back("-internal-isystem");
-    CC1Args.push_back(DriverArgs.MakeArgString(P));
   }
 
   if (DriverArgs.hasArg(options::OPT_nogpuinc))
@@ -341,8 +336,6 @@ void RocmInstallationDetector::AddHIPInc
     return;
   }
 
-  CC1Args.push_back("-internal-isystem");
-  CC1Args.push_back(DriverArgs.MakeArgString(getIncludePath()));
   if (UsesRuntimeWrapper)
     CC1Args.append({"-include", "__clang_hip_runtime_wrapper.h"});
 }