CMake: Add option to enable greentea tests

Add an option to enable the greentea tests independently from the unit
tests.

We can't just use the typical BUILD_TESTING option to enable greentea
tests. BUILD_TESTING enables unit tests and fetches googletest, which
are compiled for the host. Greentea tests are cross compiled and require
a toolchain file. For this reason we add a new option just to enable
greentea tests, preventing build failures triggered by the unit tests
and googletest.

Author: rwalton-arm

CMakeLists.txt

@@ -5,6 +5,8 @@
 
 cmake_minimum_required(VERSION 3.19.0 FATAL_ERROR)
 
+option(BUILD_GREENTEA_TESTS "Build greentea tests only." OFF)
+
 if(${CMAKE_CROSSCOMPILING})
     include(${MBED_CONFIG_PATH}/mbed_config.cmake)
     include(mbed_set_linker_script)
@@ -19,12 +21,14 @@ list(APPEND CMAKE_MODULE_PATH
 
 add_subdirectory(extern)
 
-option(BUILD_TESTING "Run unit tests only." OFF)
-
-if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
+if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
     include(CTest)
-    add_definitions(-DUNITTEST)
-    add_subdirectory(UNITTESTS)
+
+    if((NOT BUILD_GREENTEA_TESTS) AND BUILD_TESTING)
+        # Building unit tests only.
+        add_definitions(-DUNITTEST)
+        add_subdirectory(UNITTESTS)
+    endif()
 endif()
 
 add_library(mbed-core INTERFACE)
@@ -94,10 +98,12 @@ if(${CMAKE_CROSSCOMPILING})
 
     # Add MBED_TEST_MODE for backward compatibility with Greentea tests written for use with Mbed CLI 1
     if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-        target_compile_definitions(${PROJECT_NAME}
-            INTERFACE
-                MBED_TEST_MODE
-        )
+        if(NOT BUILD_GREENTEA_TESTS)
+            target_compile_definitions(${PROJECT_NAME}
+                INTERFACE
+                    MBED_TEST_MODE
+            )
+        endif()
     endif()
 
     # We need to generate a "response file" to pass to the C preprocessor when we preprocess the linker

connectivity/cellular/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 add_subdirectory(source/framework)

connectivity/lorawan/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 add_subdirectory(lorastack)

connectivity/netsocket/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 # TODO CMake: Perhaps move this/these file(s) into connectivity/drivers/cellular

drivers/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 target_include_directories(mbed-core

events/CMakeLists.txt

@@ -2,8 +2,12 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
-else()
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
+endif()
 
 add_library(mbed-events INTERFACE)
 
@@ -28,4 +32,3 @@ target_compile_definitions(mbed-events
     INTERFACE
         MBED_CONF_EVENTS_PRESENT=1
 )
-endif()

hal/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 add_subdirectory(TARGET_FLASH_CMSIS_ALGO EXCLUDE_FROM_ALL)

platform/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 # List of all optional platform libraries available.

rtos/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 target_include_directories(mbed-core

storage/blockdevice/CMakeLists.txt

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
-    add_subdirectory(tests/UNITTESTS)
+    if(BUILD_GREENTEA_TESTS)
+        # add greentea test
+    else()
+        add_subdirectory(tests/UNITTESTS)
+    endif()
 endif()
 
 if("DATAFLASH" IN_LIST MBED_TARGET_LABELS)