add support for out of tree native unit tests

stack/CMakeLists.txt

@@ -50,6 +50,7 @@ IF(NOT CMAKE_BUILD_TYPE MATCHES Debug)
 ENDIF()
 
 PROJECT (${PROJECT_NAME})
+enable_testing()
 
 #Set the c standard to use
 INSERT_C_FLAGS(BEFORE -std=gnu99 -fno-common)

stack/cmake/toolchains/gcc.cmake

@@ -21,3 +21,8 @@
 # Toolchain setup gcc
 #######################################
 
+# -fshort enums is required as this seems to be default with gcc-arm-none-eabi and we do some static asserts using this assumption
+# we also set these for c++ as this otherwise gives problems when linking mocks (C) against our test code (C++)
+
+SET(CMAKE_C_FLAGS_DEBUG "-g -fshort-enums -Wno-typedef-redefinition -Wno-switch -Wno-gnu-variable-sized-type-not-at-end")
+SET(CMAKE_CXX_FLAGS_DEBUG "-fshort-enums -g")

stack/modules/d7ap_fs/CMakeLists.txt

@@ -37,7 +37,7 @@ MODULE_HEADER_DEFINE(
 MODULE_BUILD_SETTINGS_FILE()
 
 #Export the module-specific header files to the application by using
-EXPORT_GLOBAL_INCLUDE_DIRECTORIES(.)
+EXPORT_GLOBAL_INCLUDE_DIRECTORIES(inc)
 
 #By convention, each module should generate a single 'static' library that can be included by the application
 ADD_LIBRARY(d7ap_fs STATIC

stack/tests/CMakeLists.txt

@@ -19,7 +19,15 @@ limitations under the License.
 
 #Add the 'BUILD_UNIT_TESTS' option
 OPTION(BUILD_UNIT_TESTS "Build unit tests applications" ON)
+
+SET(TESTS_EXTRA_TESTS_DIR "" CACHE STRING "Path to directory containing extra, out of tree tests (optional)")
+
+
 LIST_SUBDIRS(TEST_DIRS ${CMAKE_CURRENT_SOURCE_DIR})
+IF(NOT(TESTS_EXTRA_TESTS_DIR STREQUAL ""))
+    LIST_SUBDIRS(EXTRA_TESTS_DIRS ${TESTS_EXTRA_TESTS_DIR})
+    LIST(APPEND TEST_DIRS ${EXTRA_TESTS_DIRS})
+ENDIF()
 
 #Add conditional options for all subdirs (which are individual applications)
 FOREACH(__dir ${TEST_DIRS})