dpc bazel test fixes

WORKSPACE

@@ -17,6 +17,11 @@ declare_onedal_extra_toolchain(
     name = "onedal_extra_toolchain",
 )
 
+load("@onedal//dev/bazel/deps:opencl.bzl", "opencl_repo")
+opencl_repo(
+    name = "opencl",
+)
+
 load("@onedal//dev/bazel/deps:micromkl.bzl", "micromkl_repo", "micromkl_dpc_repo")
 micromkl_repo(
     name = "micromkl",

dev/bazel/deps/micromkldpc.tpl.BUILD

@@ -13,5 +13,6 @@ cc_library(
     ],
     deps = [
         ":headers",
+        "@opencl//:opencl_binary",
     ],
 )

dev/bazel/deps/opencl.bzl

@@ -0,0 +1,46 @@
+#===============================================================================
+# Copyright 2020 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#===============================================================================
+
+load("@onedal//dev/bazel:repos.bzl", "repos")
+load("@onedal//dev/bazel:utils.bzl", "paths")
+
+def _get_dpcpp_compiler_root(repo_ctx):
+    dpcpp_path = repo_ctx.which("icpx")
+    return dpcpp_path and str(dpcpp_path.dirname.dirname.realpath)
+
+def _opencl_repo_impl(repo_ctx):
+    dpcpp_root = _get_dpcpp_compiler_root(repo_ctx)
+    if dpcpp_root:
+        lib_dir = paths.join(dpcpp_root, "lib")
+        libs = [
+            "libOpenCL.so",
+            "libOpenCL.so.1",
+            "libOpenCL.so.1.2",
+        ]
+        repos.create_symlinks(repo_ctx, lib_dir, libs)
+    repo_ctx.template(
+        "BUILD",
+        Label("@onedal//dev/bazel/deps:opencl.tpl.BUILD"),
+    )
+
+opencl_repo = repository_rule(
+    implementation = _opencl_repo_impl,
+    environ = [
+        "PATH",
+    ],
+    local = True,
+    configure = True,
+)

dev/bazel/deps/opencl.tpl.BUILD

@@ -0,0 +1,8 @@
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "opencl_binary",
+    srcs = [
+        "libOpenCL.so.1.2",
+    ],
+)