From 8e3886acac2e6058f4f540269f43b1f4a2700adc Mon Sep 17 00:00:00 2001
From: Alexandre Bailon <abailon@baylibre.com>
Date: Wed, 8 Jan 2025 11:27:27 +0100
Subject: [PATCH] Create Zephyr external module

This update googletest to use it as Zephyr OS external module.
This allows downloading, configure and building googltest using
Zephyr west build system, without any user manipulation.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
---
 modules/googletest/CMakeLists.txt | 17 +++++++++++++++++
 modules/googletest/Kconfig        | 18 ++++++++++++++++++
 modules/modules.cmake             |  2 ++
 zephyr/module.yml                 |  6 ++++++
 4 files changed, 43 insertions(+)
 create mode 100644 modules/googletest/CMakeLists.txt
 create mode 100644 modules/googletest/Kconfig
 create mode 100644 modules/modules.cmake
 create mode 100644 zephyr/module.yml

diff --git a/modules/googletest/CMakeLists.txt b/modules/googletest/CMakeLists.txt
new file mode 100644
index 00000000..c6028874
--- /dev/null
+++ b/modules/googletest/CMakeLists.txt
@@ -0,0 +1,17 @@
+zephyr_library()
+
+# Disable use of pthreads in GoogleTest
+set(gtest_disable_pthreads ON CACHE BOOL "Build GoogleTest without Pthread")
+
+zephyr_include_directories_ifdef(CONFIG_GTEST ${ZEPHYR_GOOGLETEST_MODULE_DIR}/googletest/)
+zephyr_include_directories_ifdef(CONFIG_GTEST ${ZEPHYR_GOOGLETEST_MODULE_DIR}/googletest/include/)
+zephyr_library_sources_ifdef(CONFIG_GTEST
+    ${ZEPHYR_GOOGLETEST_MODULE_DIR}/googletest/src/gtest-all.cc
+)
+target_sources_ifdef(CONFIG_GTEST app PRIVATE
+    ${ZEPHYR_GOOGLETEST_MODULE_DIR}/googletest/src/gtest_main.cc
+)
+
+zephyr_include_directories_ifdef(CONFIG_GMOCK ${ZEPHYR_GOOGLETEST_MODULE_DIR}/googlemock/)
+zephyr_include_directories_ifdef(CONFIG_GMOCK ${ZEPHYR_GOOGLETEST_MODULE_DIR}/googlemock/include/)
+zephyr_library_sources_ifdef(CONFIG_GMOCK ${ZEPHYR_GOOGLETEST_MODULE_DIR}/googlemock/src/gmock-all.cc)
diff --git a/modules/googletest/Kconfig b/modules/googletest/Kconfig
new file mode 100644
index 00000000..f2d30e27
--- /dev/null
+++ b/modules/googletest/Kconfig
@@ -0,0 +1,18 @@
+config GTEST
+    bool "GoogleTest test framework"
+    select TEST
+    select CPP
+    select REQUIRES_FULL_LIBCPP
+    select FPU
+
+config GMOCK
+    bool "GoogleMock mocking framework"
+    select GTEST
+
+choice STD_CPP
+	default STD_CPP14 if GTEST
+endchoice
+
+choice LIBC_IMPLEMENTATION
+	default NEWLIB_LIBC if GTEST
+endchoice
diff --git a/modules/modules.cmake b/modules/modules.cmake
new file mode 100644
index 00000000..0b79068d
--- /dev/null
+++ b/modules/modules.cmake
@@ -0,0 +1,2 @@
+set(ZEPHYR_GOOGLETEST_CMAKE_DIR ${CMAKE_CURRENT_LIST_DIR}/googletest)
+set(ZEPHYR_GOOGLETEST_KCONFIG   ${CMAKE_CURRENT_LIST_DIR}/googletest/Kconfig)
diff --git a/zephyr/module.yml b/zephyr/module.yml
new file mode 100644
index 00000000..2415d80f
--- /dev/null
+++ b/zephyr/module.yml
@@ -0,0 +1,6 @@
+name: googletest
+build:
+  cmake-ext: true
+  kconfig-ext: true
+  settings:
+    module_ext_root: .