Unbreak build due to googletest. (#282)

* Just cmake. (revert me)

* Pin googletest to before -Werror commit.

* Try the -Werror commit.

* Revert "Try the -Werror commit."

This reverts commit 7991d47.

* Revert "Just cmake. (revert me)"

This reverts commit 8a9b21e.

* Add TODO for unpinning.

* format

Author: g-easy

cmake/googletest.CMakeLists.txt

@@ -17,9 +17,13 @@ cmake_minimum_required(VERSION 3.5)
 project(googletest-download NONE)
 
 include(ExternalProject)
+
+# TODO: Un-pin googletest version, go back to living at HEAD. It's currently
+# pinned to a commit right before a build break. Un-pin it once
+# https://github.com/google/googletest/issues/2136 is fixed.
 externalproject_add(googletest_project
                     GIT_REPOSITORY https://github.com/abseil/googletest
-                    GIT_TAG "master"
+                    GIT_TAG "ed2fe122f8dc9aca844d724986d1d5cf5b65ea4e"
                     SOURCE_DIR "${CMAKE_BINARY_DIR}/googletest-src"
                     BINARY_DIR "${CMAKE_BINARY_DIR}/googletest-build"
                     UPDATE_COMMAND ""