Upgrade vendored GoogleTest to 1.18.0

cmake/CMakeLists.txt

@@ -163,17 +163,8 @@ endif()
 if(BUILD_TESTING)
   set(BUILD_GMOCK OFF CACHE BOOL "Build Google Mock")
   set(INSTALL_GTEST OFF CACHE BOOL "Install Google Test")
-  function(stan_add_googletest)
-    # CMake 4 removed policies older than 3.5. Limit the compatibility setting
-    # to this old dependency, preserving a higher caller-provided minimum.
-    if(NOT DEFINED CMAKE_POLICY_VERSION_MINIMUM
-        OR CMAKE_POLICY_VERSION_MINIMUM VERSION_LESS "3.5")
-      set(CMAKE_POLICY_VERSION_MINIMUM 3.5)
-    endif()
-    add_subdirectory("${STAN_BENCHMARK_ROOT}/googletest"
-      "${CMAKE_CURRENT_BINARY_DIR}/googletest" EXCLUDE_FROM_ALL)
-  endfunction()
-  stan_add_googletest()
+  add_subdirectory("${STAN_BENCHMARK_ROOT}/googletest"
+    "${CMAKE_CURRENT_BINARY_DIR}/googletest" EXCLUDE_FROM_ALL)
   if(WIN32)
     target_compile_definitions(gtest PUBLIC GTEST_HAS_PTHREAD=0)
   endif()

lib/benchmark_1.5.1/googletest/.github/ISSUE_TEMPLATE/00-bug_report.yml

@@ -0,0 +1,53 @@
+name: Bug Report
+description: Let us know that something does not work as expected.
+title: "[Bug]: Please title this bug report"
+body:
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: Describe the issue
+      description: What happened, and what did you expect to happen?
+    validations:
+      required: true
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to reproduce the problem
+      description: It is important that we are able to reproduce the problem that you are experiencing. Please provide all code and relevant steps to reproduce the problem, including your `BUILD`/`CMakeLists.txt` file and build commands. Links to a GitHub branch or [godbolt.org](https://godbolt.org/) that demonstrate the problem are also helpful.
+    validations:
+      required: true
+  - type: textarea
+    id: version
+    attributes:
+      label: What version of GoogleTest are you using?
+      description: Please include the output of `git rev-parse HEAD` or the GoogleTest release version number that you are using.
+    validations:
+      required: true
+  - type: textarea
+    id: os
+    attributes:
+      label: What operating system and version are you using?
+      description: If you are using a Linux distribution please include the name and version of the distribution as well.
+    validations:
+      required: true
+  - type: textarea
+    id: compiler
+    attributes:
+      label: What compiler and version are you using?
+      description: Please include the output of `gcc -v` or `clang -v`, or the equivalent for your compiler.
+    validations:
+      required: true
+  - type: textarea
+    id: buildsystem
+    attributes:
+      label: What build system are you using?
+      description: Please include the output of `bazel --version` or `cmake --version`, or the equivalent for your build system.
+    validations:
+      required: true
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional context
+      description: Add any other context about the problem here.
+    validations:
+      required: false

lib/benchmark_1.5.1/googletest/.github/ISSUE_TEMPLATE/10-feature_request.yml

@@ -0,0 +1,33 @@
+name: Feature request
+description: Propose a new feature.
+title: "[FR]: Please title this feature request"
+labels: "enhancement"
+body:
+  - type: textarea
+    id: version
+    attributes:
+      label: Does the feature exist in the most recent commit?
+      description: We recommend using the latest commit from GitHub in your projects.
+    validations:
+      required: true
+  - type: textarea
+    id: why
+    attributes:
+      label: Why do we need this feature?
+      description: Ideally, explain why a combination of existing features cannot be used instead.
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Describe the proposal.
+      description: Include a detailed description of the feature, with usage examples.
+    validations:
+      required: true
+  - type: textarea
+    id: platform
+    attributes:
+      label: Is the feature specific to an operating system, compiler, or build system version?
+      description: If it is, please specify which versions.
+    validations:
+      required: true

lib/benchmark_1.5.1/googletest/.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+    - name: Get Help
+      url: https://github.com/google/googletest/discussions
+      about: Please ask and answer questions here.

lib/benchmark_1.5.1/googletest/.gitignore

@@ -8,6 +8,7 @@ bazel-genfiles
 bazel-googletest
 bazel-out
 bazel-testlogs
+MODULE.bazel.lock
 # python
 *.pyc
 
@@ -24,6 +25,10 @@ Win32-Release/
 x64-Debug/
 x64-Release/
 
+# VSCode files
+.cache/
+cmake-variants.yaml
+
 # Ignore autoconf / automake files
 Makefile.in
 aclocal.m4

lib/benchmark_1.5.1/googletest/BUILD.bazel

@@ -36,9 +36,40 @@ package(default_visibility = ["//visibility:public"])
 
 licenses(["notice"])
 
+exports_files(["LICENSE"])
+
+config_setting(
+    name = "qnx",
+    constraint_values = ["@platforms//os:qnx"],
+)
+
 config_setting(
     name = "windows",
-    constraint_values = ["@bazel_tools//platforms:windows"],
+    constraint_values = ["@platforms//os:windows"],
+)
+
+config_setting(
+    name = "freebsd",
+    constraint_values = ["@platforms//os:freebsd"],
+)
+
+config_setting(
+    name = "openbsd",
+    constraint_values = ["@platforms//os:openbsd"],
+)
+
+# NOTE: Fuchsia is not an officially supported platform.
+config_setting(
+    name = "fuchsia",
+    constraint_values = ["@platforms//os:fuchsia"],
+)
+
+config_setting(
+    name = "msvc_compiler",
+    flag_values = {
+        "@bazel_tools//tools/cpp:compiler": "msvc-cl",
+    },
+    visibility = [":__subpackages__"],
 )
 
 config_setting(
@@ -54,6 +85,10 @@ cc_library(
 )
 
 # Google Test including Google Mock
+
+# For an actual test, use `gtest` and also `gtest_main` if you depend on gtest's
+# main(). For a library, use `gtest_for_library` instead if the library can be
+# testonly.
 cc_library(
     name = "gtest",
     srcs = glob(
@@ -76,6 +111,7 @@ cc_library(
         "googlemock/include/gmock/*.h",
     ]),
     copts = select({
+        ":qnx": [],
         ":windows": [],
         "//conditions:default": ["-pthread"],
     }),
@@ -94,23 +130,55 @@ cc_library(
         "googletest/include",
     ],
     linkopts = select({
+        ":qnx": ["-lregex"],
         ":windows": [],
+        ":freebsd": [
+            "-lm",
+            "-pthread",
+        ],
+        ":openbsd": [
+            "-lm",
+            "-pthread",
+        ],
         "//conditions:default": ["-pthread"],
     }),
     deps = select({
         ":has_absl": [
-            "@com_google_absl//absl/debugging:failure_signal_handler",
-            "@com_google_absl//absl/debugging:stacktrace",
-            "@com_google_absl//absl/debugging:symbolize",
-            "@com_google_absl//absl/strings",
-            "@com_google_absl//absl/types:any",
-            "@com_google_absl//absl/types:optional",
-            "@com_google_absl//absl/types:variant",
+            "@abseil-cpp//absl/container:flat_hash_set",
+            "@abseil-cpp//absl/debugging:failure_signal_handler",
+            "@abseil-cpp//absl/debugging:stacktrace",
+            "@abseil-cpp//absl/debugging:symbolize",
+            "@abseil-cpp//absl/flags:flag",
+            "@abseil-cpp//absl/flags:parse",
+            "@abseil-cpp//absl/flags:reflection",
+            "@abseil-cpp//absl/flags:usage",
+            "@abseil-cpp//absl/strings",
+            "@re2",
+        ],
+        "//conditions:default": [],
+    }) + select({
+        # `gtest-death-test.cc` has `EXPECT_DEATH` that spawns a process,
+        # expects it to crash and inspects its logs with the given matcher,
+        # so that's why these libraries are needed.
+        # Otherwise, builds targeting Fuchsia would fail to compile.
+        ":fuchsia": [
+            "@fuchsia_sdk//pkg/fdio",
+            "@fuchsia_sdk//pkg/zx",
         ],
         "//conditions:default": [],
     }),
 )
 
+# `gtest`, but testonly. See guidance on `gtest` for when to use this.
+alias(
+    name = "gtest_for_library",
+    testonly = True,
+    actual = ":gtest",
+)
+
+# Implements main() for tests using gtest. Prefer to depend on `gtest` as well
+# to ensure compliance with the layering_check Bazel feature where only the
+# direct hdrs values are available.
 cc_library(
     name = "gtest_main",
     srcs = ["googlemock/src/gmock_main.cc"],
@@ -119,6 +187,7 @@ cc_library(
         "//conditions:default": [],
     }),
     deps = [":gtest"],
+    alwayslink = True,
 )
 
 # The following rules build samples of how to use gTest.

lib/benchmark_1.5.1/googletest/CMakeLists.txt

@@ -1,29 +1,33 @@
 # Note: CMake support is community-based. The maintainers do not use CMake
 # internally.
 
-cmake_minimum_required(VERSION 2.8.8)
-
-if (POLICY CMP0048)
-  cmake_policy(SET CMP0048 NEW)
-endif (POLICY CMP0048)
+cmake_minimum_required(VERSION 3.16)
 
 project(googletest-distribution)
-set(GOOGLETEST_VERSION 1.10.0)
+set(GOOGLETEST_VERSION 1.18.0)
 
-if (CMAKE_VERSION VERSION_GREATER "3.0.2")
-  if(NOT CYGWIN AND NOT MSYS AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL QNX)
-    set(CMAKE_CXX_EXTENSIONS OFF)
-  endif()
+if(NOT CYGWIN AND NOT MSYS AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL QNX)
+  set(CMAKE_CXX_EXTENSIONS OFF)
 endif()
 
 enable_testing()
 
 include(CMakeDependentOption)
 include(GNUInstallDirs)
 
-#Note that googlemock target already builds googletest
+# Note that googlemock target already builds googletest.
 option(BUILD_GMOCK "Builds the googlemock subproject" ON)
 option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON)
+option(GTEST_HAS_ABSL "Use Abseil and RE2. Requires Abseil and RE2 to be separately added to the build." OFF)
+
+if(GTEST_HAS_ABSL)
+  if(NOT TARGET absl::base)
+    find_package(absl REQUIRED)
+  endif()
+  if(NOT TARGET re2::re2)
+    find_package(re2 REQUIRED)
+  endif()
+endif()
 
 if(BUILD_GMOCK)
   add_subdirectory( googlemock )