CMake: Remove mbed-stubs-rtos-headers library

- Previous changes moved all rtos stubs headers into mbed-stubs-rtos-headers
lib, but the decision to keep all stubs headers under the respective
component stubs library so moved all stubs rtos headers under
mbed-stubs-rtos and updated it depend component CMake
- Remove unnecessary add_definition call for UNITTEST as any of the stubs library
added from UNITTEST/CMakeLists.txt is not required this macro

CMakeLists.txt

@@ -21,6 +21,7 @@ option(BUILD_TESTING "Run unit tests only." OFF)
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
     include(CTest)
+    add_definitions(-DUNITTEST)
     add_subdirectory(UNITTESTS)
 endif()
 

UNITTESTS/CMakeLists.txt

@@ -5,8 +5,6 @@
 set(CMAKE_CXX_STANDARD 14 CACHE STRING "")
 set(CMAKE_CXX_STANDARD_REQUIRED ON CACHE BOOL "")
 
-add_definitions(-DUNITTEST)
-
 if (MINGW)
     # enable PRIx formatting globally
     add_definitions(-D__STDC_FORMAT_MACROS)

UNITTESTS/stubs/connectivity/CMakeLists.txt

@@ -28,7 +28,6 @@ target_sources(mbed-stubs-connectivity
 
 target_link_libraries(mbed-stubs-connectivity
     PRIVATE
-        mbed-stubs-rtos-headers
         mbed-headers
         mbed-stubs-headers
         mbed-stubs-rtos

connectivity/cellular/tests/UNITTESTS/framework/AT/at_cellularcontext/CMakeLists.txt

@@ -31,7 +31,6 @@ target_link_libraries(${TEST_NAME}
         mbed-stubs-netsocket
         mbed-stubs-cellular
         mbed-stubs-headers
-        mbed-stubs-rtos-headers
         gmock_main
 )
 

connectivity/cellular/tests/UNITTESTS/framework/AT/at_cellularstack/CMakeLists.txt

@@ -33,7 +33,6 @@ target_link_libraries(${TEST_NAME}
         mbed-stubs
         mbed-stubs-cellular
         mbed-stubs-headers
-        mbed-stubs-rtos-headers
         gmock_main
 )
 

connectivity/cellular/tests/UNITTESTS/framework/device/cellularstatemachine/CMakeLists.txt

@@ -34,7 +34,6 @@ target_link_libraries(${TEST_NAME}
         mbed-stubs
         mbed-stubs-cellular
         mbed-stubs-headers
-        mbed-stubs-rtos-headers
         gmock_main
 )
 

connectivity/netsocket/tests/UNITTESTS/doubles/CMakeLists.txt

@@ -30,7 +30,6 @@ target_sources(mbed-stubs-netsocket
 target_link_libraries(mbed-stubs-netsocket
     PRIVATE
         mbed-headers-netsocket
-        mbed-stubs-rtos-headers
         mbed-headers
         mbed-stubs-headers
         mbed-stubs-rtos

rtos/tests/UNITTESTS/doubles/CMakeLists.txt

@@ -9,15 +9,13 @@ target_include_directories(mbed-headers-rtos
         ${mbed-os_SOURCE_DIR}/rtos/include/rtos
 )
 
-add_library(mbed-stubs-rtos-headers INTERFACE)
+add_library(mbed-stubs-rtos)
 
-target_include_directories(mbed-stubs-rtos-headers
+target_include_directories(mbed-stubs-rtos
     INTERFACE
         .
 )
 
-add_library(mbed-stubs-rtos)
-
 target_compile_definitions(mbed-stubs-rtos
     PRIVATE
         MBED_CONF_RTOS_PRESENT=1