adds regression for smp

port/moonlight/CMakeLists.txt

@@ -3,7 +3,7 @@ set(THREADX4TGFS_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../..)
 set(MOONLIGHT_SRC_DIR ${MOONLIGHT_ROOT}/src)
 set(MOONLIGHT_INC_DIR ${MOONLIGHT_ROOT}/inc)
 
-if(NOT DEFINED MOONLIGHT_TRAP_SOURCE)
+if(NOT DEFINED MOONLIGHT_TRAP_SOURCE) # Hook to use vectored traps, also used in regression testing
   set(MOONLIGHT_TRAP_SOURCE ${MOONLIGHT_SRC_DIR}/trap_non_vectored.c)
 endif()
 
@@ -15,6 +15,7 @@ set(MOONLIGHT_PLATFORM_SOURCES
   ${MOONLIGHT_SRC_DIR}/exception.c
   ${MOONLIGHT_SRC_DIR}/vector_table.c)
 
+# define a basic library containing all generic board components
 add_library(moonlight_platform_defaults INTERFACE)
 target_include_directories(moonlight_platform_defaults INTERFACE
   ${MOONLIGHT_INC_DIR}
@@ -32,6 +33,7 @@ if(NX_DEBUG)
     NX_DEBUG_PACKET)
 endif()
 
+# helper to tie in different threadx runtimes
 function(moonlight_define_platform TARGET THREADX_TARGET)
   add_library(${TARGET} OBJECT
     ${MOONLIGHT_PLATFORM_SOURCES})
@@ -41,7 +43,10 @@ function(moonlight_define_platform TARGET THREADX_TARGET)
     ${THREADX_TARGET})
 endfunction()
 
-moonlight_define_platform(moonlight_platform_common threadx)
+if(TARGET threadx)
+  moonlight_define_platform(moonlight_platform_common threadx)
+endif()
+
 if(TARGET threadx_smp)
   moonlight_define_platform(moonlight_platform_common_smp threadx_smp)
 endif()
@@ -56,6 +61,7 @@ if(DEFINED NETXDUO_CUSTOM_PORT)
     netxduo)
 endif()
 
+# helper for consumers to inject moonlight as a dependency into a target
 function(target_add_moonlight_platform TARGET)
   set(options)
   set(oneValueArgs PLATFORM_TARGET)
@@ -66,12 +72,16 @@ function(target_add_moonlight_platform TARGET)
   endif()
 
   if(NOT TAMP_PLATFORM_TARGET)
+    if(NOT TARGET moonlight_platform_common)
+      message(FATAL_ERROR "moonlight_platform_common is not available in this build; pass PLATFORM_TARGET explicitly")
+    endif()
     set(TAMP_PLATFORM_TARGET moonlight_platform_common)
   endif()
 
   target_link_libraries(${TARGET} PRIVATE ${TAMP_PLATFORM_TARGET})
 endfunction()
 
+# helper to inject the network driver into a target
 function(target_add_moonlight_network_driver TARGET)
   if(NOT TARGET moonlight_network_driver)
     message(FATAL_ERROR "moonlight_network_driver requires netxduo to be available in this build")