Fix nasa#2320, reorganize EVS header files

Organize EVS header file contents according to the convention

modules/evs/arch_build.cmake

@@ -0,0 +1,32 @@
+###########################################################
+#
+# EVS Core Module platform build setup
+#
+# This file is evaluated as part of the "prepare" stage
+# and can be used to set up prerequisites for the build,
+# such as generating header files
+#
+###########################################################
+
+# The list of header files that control the EVS configuration
+set(EVS_PLATFORM_CONFIG_FILE_LIST
+  cfe_evs_internal_cfg.h
+  cfe_evs_msgids.h
+  cfe_evs_platform_cfg.h
+)
+
+# Create wrappers around the all the config header files
+# This makes them individually overridable by the missions, without modifying
+# the distribution default copies
+foreach(EVS_CFGFILE ${EVS_PLATFORM_CONFIG_FILE_LIST})
+  get_filename_component(CFGKEY "${EVS_CFGFILE}" NAME_WE)
+  if (DEFINED EVS_CFGFILE_SRC_${CFGKEY})
+    set(DEFAULT_SOURCE "${EVS_CFGFILE_SRC_${CFGKEY}}")
+  else()
+    set(DEFAULT_SOURCE "${CMAKE_CURRENT_LIST_DIR}/config/default_${EVS_CFGFILE}")
+  endif()
+  generate_config_includefile(
+    FILE_NAME           "${EVS_CFGFILE}"
+    FALLBACK_FILE       ${DEFAULT_SOURCE}
+  )
+endforeach()

modules/core_api/fsw/inc/cfe_evs_extern_typedefs.h → modules/evs/config/default_cfe_evs_extern_typedefs.h

@@ -25,16 +25,6 @@
 #ifndef CFE_EVS_EXTERN_TYPEDEFS_H
 #define CFE_EVS_EXTERN_TYPEDEFS_H
 
-/* This header may be generated from an EDS file,
- * tools are available and the feature is enabled */
-#ifdef CFE_EDS_ENABLED_BUILD
-
-/* Use the EDS generated version of these types */
-#include "cfe_evs_eds_typedefs.h"
-
-#else
-/* Use the local definitions of these types */
-
 #include "common_types.h"
 
 /**
@@ -167,6 +157,4 @@ enum CFE_EVS_EventOutput
  */
 typedef uint8 CFE_EVS_EventOutput_Enum_t;
 
-#endif /* CFE_EDS_ENABLED_BUILD */
-
 #endif /* CFE_EVS_EXTERN_TYPEDEFS_H */