gnu: Add llvm-for-rocm.

* gnu/packages/rocm.scm (llvm-for-rocm): New variable.
* gnu/packages/patches/llvm-roc-3.0.0-add_libraries.patch,
gnu/packages/patches/llvm-roc-4.0.0-remove-isystem-usr-include.patch,
gnu/packages/patches/llvm-roc-4.2.0-add_Object.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.

1 files changed, 29 insertions, 0 deletions

diff --git a/gnu/packages/patches/llvm-roc-4.0.0-remove-isystem-usr-include.patch b/gnu/packages/patches/llvm-roc-4.0.0-remove-isystem-usr-include.patch
new file mode 100644
index 0000000000..f14ec4ac0d
--- /dev/null
+++ b/gnu/packages/patches/llvm-roc-4.0.0-remove-isystem-usr-include.patch
@@ -0,0 +1,29 @@
+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"});
+ }