1 files changed, 58 insertions, 0 deletions
diff --git a/third-party/benchmark/cmake/GoogleTest.cmake.in b/third-party/benchmark/cmake/GoogleTest.cmake.in
new file mode 100644
index 000000000000..fd957ff56409
--- /dev/null
+++ b/third-party/benchmark/cmake/GoogleTest.cmake.in
@@ -0,0 +1,58 @@
+cmake_minimum_required(VERSION 2.8.12)
+
+project(googletest-download NONE)
+
+# Enable ExternalProject CMake module
+include(ExternalProject)
+
+option(ALLOW_DOWNLOADING_GOOGLETEST "If googletest src tree is not found in location specified by GOOGLETEST_PATH, do fetch the archive from internet" OFF)
+set(GOOGLETEST_PATH "/usr/src/googletest" CACHE PATH
+                    "Path to the googletest root tree. Should contain googletest and googlemock subdirs. And CMakeLists.txt in root, and in both of these subdirs")
+
+# Download and install GoogleTest
+
+message(STATUS "Looking for Google Test sources")
+message(STATUS "Looking for Google Test sources in ${GOOGLETEST_PATH}")
+if(EXISTS "${GOOGLETEST_PATH}"            AND IS_DIRECTORY "${GOOGLETEST_PATH}"            AND EXISTS "${GOOGLETEST_PATH}/CMakeLists.txt" AND
+   EXISTS "${GOOGLETEST_PATH}/googletest" AND IS_DIRECTORY "${GOOGLETEST_PATH}/googletest" AND EXISTS "${GOOGLETEST_PATH}/googletest/CMakeLists.txt" AND
+   EXISTS "${GOOGLETEST_PATH}/googlemock" AND IS_DIRECTORY "${GOOGLETEST_PATH}/googlemock" AND EXISTS "${GOOGLETEST_PATH}/googlemock/CMakeLists.txt")
+  message(STATUS "Found Google Test in ${GOOGLETEST_PATH}")
+
+  ExternalProject_Add(
+    googletest
+    PREFIX            "${CMAKE_BINARY_DIR}"
+    DOWNLOAD_DIR      "${CMAKE_BINARY_DIR}/download"
+    SOURCE_DIR        "${GOOGLETEST_PATH}" # use existing src dir.
+    BINARY_DIR        "${CMAKE_BINARY_DIR}/build"
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND     ""
+    INSTALL_COMMAND   ""
+    TEST_COMMAND      ""
+  )
+else()
+  if(NOT ALLOW_DOWNLOADING_GOOGLETEST)
+    message(SEND_ERROR "Did not find Google Test sources! Either pass correct path in GOOGLETEST_PATH, or enable BENCHMARK_DOWNLOAD_DEPENDENCIES, or disable BENCHMARK_ENABLE_GTEST_TESTS / BENCHMARK_ENABLE_TESTING.")
+  else()
+    message(WARNING "Did not find Google Test sources! Fetching from web...")
+    ExternalProject_Add(
+      googletest
+      GIT_REPOSITORY    https://github.com/google/googletest.git
+      GIT_TAG           master
+      PREFIX            "${CMAKE_BINARY_DIR}"
+      STAMP_DIR         "${CMAKE_BINARY_DIR}/stamp"
+      DOWNLOAD_DIR      "${CMAKE_BINARY_DIR}/download"
+      SOURCE_DIR        "${CMAKE_BINARY_DIR}/src"
+      BINARY_DIR        "${CMAKE_BINARY_DIR}/build"
+      CONFIGURE_COMMAND ""
+      BUILD_COMMAND     ""
+      INSTALL_COMMAND   ""
+      TEST_COMMAND      ""
+    )
+  endif()
+endif()
+
+ExternalProject_Get_Property(googletest SOURCE_DIR BINARY_DIR)
+file(WRITE googletest-paths.cmake
+"set(GOOGLETEST_SOURCE_DIR \"${SOURCE_DIR}\")
+set(GOOGLETEST_BINARY_DIR \"${BINARY_DIR}\")
+")