clean up

hw/bsp/family_support.cmake

@@ -1,4 +1,11 @@
 if (NOT TARGET _family_support_marker)
+    include(CMakePrintHelpers)
+
+    # Default to gcc
+    if(NOT DEFINED TOOLCHAIN)
+        set(TOOLCHAIN gcc)
+    endif()
+
     add_library(_family_support_marker INTERFACE)
 
     if (NOT FAMILY)

hw/bsp/imxrt/family.cmake

@@ -1,5 +1,7 @@
-# toolchain set up, include before project()
+
+
 if (NOT TARGET ${PROJECT})
+  # toolchain set up, include before project()
   set(CMAKE_SYSTEM_PROCESSOR cortex-m7 CACHE INTERNAL "System Processor")
   set(CMAKE_TOOLCHAIN_FILE ${CMAKE_CURRENT_LIST_DIR}/../../../cmake/toolchain/arm_${TOOLCHAIN}.cmake)
 else ()