Add GBench library find and install scripts.

Author: viferga

FindGBench.cmake

@@ -0,0 +1,49 @@
+#
+#	CMake Find Google Benchmark by Parra Studios
+#	CMake script to find Google Benchmark library.
+#
+#	Copyright (C) 2016 - 2019 Vicente Eduardo Ferrer Garcia <[email protected]>
+#
+#	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.
+#
+
+# The following variables are set:
+#
+# GBENCH_INCLUDE_DIR - Path where Google Benchmark header is located.
+# GBENCH_LIBRARY - Path where Google Benchmark library is located.
+
+# Prevent vervosity if already included
+if(GBENCH_FOUND)
+	set(GBENCH_FIND_QUIETLY TRUE)
+endif()
+
+find_path(GBENCH_INCLUDE_DIR NAMES benchmark/benchmark.h)
+find_library(GBENCH_LIBRARY NAMES benchmark)
+
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(google-benchmark
+	REQUIRED_VARS GBENCH_INCLUDE_DIR GBENCH_LIBRARY
+)
+
+mark_as_advanced(GBENCH_INCLUDE_DIR GBENCH_LIBRARY)
+
+if(GBENCH_FOUND)
+	if(NOT GBENCH_FIND_QUIETLY)
+		message(STATUS "Found Google Benchmark:\n\tLibrary: ${GBENCH_LIBRARY}\n\tIncludes: ${GBENCH_INCLUDE_PATH}")
+	endif(NOT GBENCH_FIND_QUIETLY)
+else(GBENCH_FOUND)
+	if(GBENCH_FIND_REQUIRED)
+		message(FATAL_ERROR "Could not find Google Benchmark library")
+	endif(GBENCH_FIND_REQUIRED)
+endif(GBENCH_FOUND)

InstallGBench.cmake

@@ -0,0 +1,55 @@
+#
+#	CMake Install Google Benchmark by Parra Studios
+#	CMake script to install Google Benchmark library.
+#
+#	Copyright (C) 2016 - 2019 Vicente Eduardo Ferrer Garcia <[email protected]>
+#
+#	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.
+#
+
+# The following variables are set:
+#
+# GBENCH_INCLUDE_DIR - Path where Google Benchmark header is located.
+# GBENCH_LIBRARY - Path where Google Benchmark library is located.
+
+if(NOT GBENCH_FOUND OR USE_BUNDLED_GBENCH)
+	if(NOT GBENCH_VERSION OR USE_BUNDLED_GBENCH)
+		set(GBENCH_VERSION 1.4.1)
+		set(GBENCH_URL_MD5 482dddb22bec43f5507a000456d6bb88)
+	endif()
+
+	ExternalProject_Add(GoogleBench
+		DOWNLOAD_NAME	GBench-${GBENCH_VERSION}.tar.gz
+		URL				https://github.com/google/benchmark/archive/v${GBENCH_VERSION}.tar.gz
+		URL_MD5			${GBENCH_URL_MD5}
+		CMAKE_ARGS		-DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON
+		TEST_COMMAND	""
+	)
+
+	ExternalProject_Get_Property(GoogleBench INSTALL_DIR)
+
+	if(MSVC)
+		set(GBENCH_LIB_SUFFIX "lib")
+	else()
+		set(GBENCH_LIB_SUFFIX "a")
+	endif()
+
+	set(GBENCH_ROOT_DIR			"${INSTALL_DIR}")
+	set(GBENCH_INCLUDE_DIR		"${GBENCH_ROOT_DIR}/include")
+	set(GBENCH_LIBRARY			"${GBENCH_ROOT_DIR}/lib/libbenchmark.${GBENCH_LIB_SUFFIX}")
+	set(GBENCH_FOUND			TRUE)
+
+	mark_as_advanced(GBENCH_INCLUDE_DIR GBENCH_LIBRARY)
+
+	message(STATUS "Install Google Benchmark v${GBENCH_VERSION}")
+endif ()