opencl-clang: fix runtime error

Error log:
clang (LLVM option parsing): Unknown command line argument '-pgo-warn-misexpect'.
Try: 'clang (LLVM option parsing) --help'

Force opencl-clang to link with shared clang-cpp for target builds and
explicitly link with spirv library because of a change in behaviour in llvm 10.

Use the patch to link with all static libs only for native cases where meta-clang
default to building static libs only by default.

Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/dynamic-layers/clang-layer/recipes-opencl/opencl-clang/files/0001-Building-in-tree-with-LLVM-10.0-with-the-LLVM_LINK_L.patch b/dynamic-layers/clang-layer/recipes-opencl/opencl-clang/files/0001-Building-in-tree-with-LLVM-10.0-with-the-LLVM_LINK_L.patch
new file mode 100644
index 00000000..8ffa853b
--- /dev/null
+++ b/dynamic-layers/clang-layer/recipes-opencl/opencl-clang/files/0001-Building-in-tree-with-LLVM-10.0-with-the-LLVM_LINK_L.patch
@@ -0,0 +1,35 @@
+From 7fc05c52dd91902fa324a7aac9b90715cfca4717 Mon Sep 17 00:00:00 2001
+From: Naveen Saini <naveen.kumar.saini@intel.com>
+Date: Wed, 15 Apr 2020 17:55:32 +0800
+Subject: [PATCH] Building in-tree with LLVM 10.0 with the LLVM_LINK_LLVM_DYLIB
+
+Failed to link with the LLVMSPIRVLib library.
+
+Add an explicit dependency to force the correct build order and linking.
+
+Reference:
+https://github.com/KhronosGroup/SPIRV-LLVM-Translator/commit/a6d4ccf082858e63e139ca06c02a071c343d2657
+
+Upstream-Status: Submitted [https://github.com/intel/opencl-clang/pull/118]
+
+Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 51c140d..b8b514e 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -208,7 +208,7 @@ link_directories(
+ 
+ set(OPENCL_CLANG_LINK_LIBS ${CMAKE_DL_LIBS})
+ 
+-if(NOT LLVMSPIRVLib IN_LIST LLVM_AVAILABLE_LIBS)
++if(NOT LLVMSPIRVLib IN_LIST LLVM_AVAILABLE_LIBS OR (USE_PREBUILT_LLVM AND LLVM_LINK_LLVM_DYLIB))
+   # SPIRV-LLVM-Translator is not included into LLVM as a component.
+   # So, we need to list it here explicitly as an external library
+   list(APPEND OPENCL_CLANG_LINK_LIBS LLVMSPIRVLib)
+-- 
+2.17.1
+