Adding OpenRNG Backend (#2871)

* Added openrng backend

---------

Signed-off-by: Dhanus M Lal <Dhanus.MLal@fujitsu.com>

.ci/env/openrng.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+#===============================================================================
+# Copyright contributors to the oneDAL project
+#
+# 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.
+#===============================================================================
+
+SCRIPT_PATH=$(readlink -f "${BASH_SOURCE[0]}")
+SCRIPT_DIR=$(dirname "${SCRIPT_PATH}")
+ONEDAL_DIR=$(readlink -f "${SCRIPT_DIR}/../..")
+OPENRNG_DEFAULT_SOURCE_DIR="${ONEDAL_DIR}/__work/openrng"
+
+show_help() {
+  echo "Usage: $0 [--help]"
+  column -t -s":" <<< '--help:Display this information
+--rng-src:The path to an existing OpenRNG source dircetory. The source is cloned if this parameter is omitted
+--prefix:The path where OpenRNG will be installed
+'
+}
+
+while [[ $# -gt 0 ]]; do
+    key="$1"
+
+    case $key in
+        --rng-src)
+        rng_src_dir="$2"
+        shift;;
+        --prefix)
+        PREFIX="$2"
+        shift;;
+        --help)
+        show_help
+        exit 0
+        ;;
+        *)
+        echo "Unknown option: $1"
+        exit 1
+        ;;
+    esac
+    shift
+done
+
+OPENRNG_DEFAULT_PREFIX="${ONEDAL_DIR}"/__deps/openrng
+rng_prefix="${PREFIX:-${OPENRNG_DEFAULT_PREFIX}}"
+
+rng_src_dir=${rng_src_dir:-$OPENRNG_DEFAULT_SOURCE_DIR}
+if [[ ! -d "${rng_src_dir}" ]] ; then
+    git clone https://git.gitlab.arm.com/libraries/openrng.git "${rng_src_dir}"
+fi
+
+echo $rng_src_dir
+echo $rng_prefix
+pushd "${rng_src_dir}"
+    rm -rf build
+    mkdir build
+        pushd build
+            cmake -DCMAKE_INSTALL_PREFIX="${rng_prefix}" ./../
+            make install
+        popd
+popd

.ci/scripts/build.sh

@@ -34,6 +34,7 @@ show_help() {
 --plat:The platform to build for. This is passed to the oneDAL top level Makefile
 --blas-dir:The BLAS installation directory to use to build oneDAL with in the case that the backend is given as `ref`. If the installation directory does not exist, attempts to build this from source
 --tbb-dir:The TBB installation directory to use to build oneDAL with in the case that the backend is given as `ref`. If the installation directory does not exist, attempts to build this from source
+--use-openrng:Set this to yes if openrng is to be used as RNG backend. Use this only with the `ref` backend.
 --sysroot:The sysroot to use, in the case that clang is used as the cross-compiler
 '
 }
@@ -72,6 +73,9 @@ while [[ $# -gt 0 ]]; do
         --sysroot)
         sysroot="$2"
         shift;;
+        --use-openrng)
+        use_openrng="$2"
+        shift;;
         --help)
         show_help
         exit 0
@@ -186,6 +190,14 @@ elif [ "${backend_config}" == "ref" ]; then
         "${ONEDAL_DIR}"/.ci/env/openblas.sh "${openblas_options[@]}"
     fi
     export OPENBLASROOT="${ONEDAL_DIR}/__deps/openblas_${ARCH}"
+    if [ "${use_openrng}" == "yes" ]; then
+        echo "Sourcing ref(openrng) env"
+        if [ ! -d "${ONEDAL_DIR}"/__deps/openrng ]; then
+            echo "${ONEDAL_DIR}"/.ci/env/openrng.sh
+            "${ONEDAL_DIR}"/.ci/env/openrng.sh
+        fi
+        export OPENRNGROOT="${ONEDAL_DIR}"/__deps/openrng
+    fi
 else
     echo "Not supported backend env"
 fi
@@ -231,6 +243,10 @@ if [ "${cross_compile}" == "yes" ] && [ "${compiler}" == "clang" ] ; then
     make_options+=(SYSROOT="${sysroot}")
 fi
 
+if [ "${use_openrng}" == "yes" ]; then
+    make_options+=(RNG_BACKEND=openrng)
+fi
+
 echo "Calling make"
 echo "CXX=$CXX"
 echo "CC=$CC"