[nrf fromtree] cmake: code relocation setting.

With code relocation directives passed to the gen_relocate_app.py script
using generated file, then each directive can be place on individual
line in the file and thus free up the `|` character as separator.

Furthermore, a multi-line file with each directive on separate line is
also more user-readable, making debugging easier.

Signed-off-by: Torsten Rasmussen <[email protected]>
(cherry picked from commit cb8f99a)

Author: tejlmand

cmake/modules/extensions.cmake

@@ -1521,15 +1521,15 @@ function(zephyr_code_relocate)
   if(CODE_REL_PHDR)
     set(CODE_REL_LOCATION "${CODE_REL_LOCATION}\ :${CODE_REL_PHDR}")
   endif()
-  # We use the "|" character to separate code relocation directives, instead of
+  # Each code relocation directive is placed on an independent line, instead of
   # using set_property(APPEND) to produce a ";"-separated CMake list. This way,
   # each directive can embed multiple CMake lists, representing flags and files,
   # the latter of which can come from generator expressions.
   get_property(code_rel_str TARGET code_data_relocation_target
     PROPERTY INTERFACE_SOURCES)
   set_property(TARGET code_data_relocation_target
     PROPERTY INTERFACE_SOURCES
-    "${code_rel_str}|${CODE_REL_LOCATION}:${flag_list}:${file_list}")
+    "${code_rel_str}\n${CODE_REL_LOCATION}:${flag_list}:${file_list}")
 endfunction()
 
 # Usage:

scripts/build/gen_relocate_app.py

@@ -526,10 +526,10 @@ def create_dict_wrt_mem():
     rel_dict = dict()
     phdrs = dict()
 
-    input_rel_dict = args.input_rel_dict.read()
-    if input_rel_dict == '':
+    input_rel_dict = args.input_rel_dict.read().splitlines()
+    if not input_rel_dict:
         sys.exit("Disable CONFIG_CODE_DATA_RELOCATION if no file needs relocation")
-    for line in input_rel_dict.split('|'):
+    for line in input_rel_dict:
         if ':' not in line:
             continue