Fix nasa#2421, adjust dependencies on table lib

Instead of having the intermediate table library build as part of the "all"
target, attach it as a dependency under the custom rule.  This way it will
only be built in the context of the cfetables top level target, not
both.

cmake/arch_build.cmake

@@ -324,7 +324,7 @@ function(add_cfe_tables TABLE_FQNAME TBL_DEFAULT_SRC_FILES)
 
         # Add a custom target to generate the config file
         add_custom_target(generate_table_${TGT}_${APP_NAME}_${TABLE_BASENAME}
-            DEPENDS "${TABLE_RULEFILE}"
+            DEPENDS "${TABLE_RULEFILE}" ${TABLE_LIBNAME}
         )
         add_dependencies(cfetables generate_table_${TGT}_${APP_NAME}_${TABLE_BASENAME})
 
@@ -335,7 +335,7 @@ function(add_cfe_tables TABLE_FQNAME TBL_DEFAULT_SRC_FILES)
         # On older versions one may not reference the TARGET_OBJECTS property from the custom command.
         # As a workaround this is built into a static library, and then the desired object is extracted
         # before passing to elf2cfetbl.  It is roundabout but it works.
-        add_library(${TABLE_LIBNAME} STATIC ${TABLE_SELECTED_SRCS})
+        add_library(${TABLE_LIBNAME} STATIC EXCLUDE_FROM_ALL ${TABLE_SELECTED_SRCS})
         target_compile_definitions(${TABLE_LIBNAME} PRIVATE
           CFE_CPU_NAME=${TGT}
         )