SCons: Reduce and cleanup verbose output for SCU builds

Verbose output is meant for debugging the SCU mode itself and can be
triggered by changing the `_verbose` bool manually.

Prefix all prints with "SCU:" for context, and print the processed
folders all at once instead of when adding the sources.

SConstruct

@@ -565,7 +565,7 @@ if selected_platform in platform_list:
         if read_scu_limit != 0:
             max_includes_per_scu = read_scu_limit
 
-        methods.set_scu_folders(scu_builders.generate_scu_files(env["verbose"], max_includes_per_scu))
+        methods.set_scu_folders(scu_builders.generate_scu_files(max_includes_per_scu))
 
     # Must happen after the flags' definition, as configure is when most flags
     # are actually handled to change compile options, etc.

methods.py

@@ -96,9 +96,6 @@ def add_source_files_scu(self, sources, files, allow_gen=False):
         if section_name not in (_scu_folders):
             return False
 
-        if self["verbose"]:
-            print("SCU building " + section_name)
-
         # Add all the gen.cpp files in the SCU directory
         add_source_files_orig(self, sources, subdir + "scu/scu_*.gen.cpp", True)
         return True

scu_builders.py

@@ -7,7 +7,7 @@
 
 base_folder_path = str(Path(__file__).parent) + "/"
 base_folder_only = os.path.basename(os.path.normpath(base_folder_path))
-_verbose = False
+_verbose = True  # Set manually for debug prints
 _scu_folders = set()
 _max_includes_per_scu = 1024
 
@@ -35,7 +35,7 @@ def find_files_in_folder(folder, sub_folder, include_list, extension, sought_exc
     abs_folder = base_folder_path + folder + "/" + sub_folder
 
     if not os.path.isdir(abs_folder):
-        print("ERROR " + abs_folder + " not found.")
+        print("SCU: ERROR: %s not found." % abs_folder)
         return include_list, found_exceptions
 
     os.chdir(abs_folder)
@@ -67,9 +67,10 @@ def write_output_file(file_count, include_list, start_line, end_line, output_fol
         # create
         os.mkdir(output_folder)
         if not os.path.isdir(output_folder):
-            print("ERROR " + output_folder + " could not be created.")
+            print("SCU: ERROR: %s could not be created." % output_folder)
             return
-        print("CREATING folder " + output_folder)
+        if _verbose:
+            print("SCU: Creating folder: %s" % output_folder)
 
     file_text = ""
 
@@ -79,16 +80,14 @@ def write_output_file(file_count, include_list, start_line, end_line, output_fol
             li = line + "\n"
             file_text += li
 
-    # print(file_text)
-
     num_string = ""
     if file_count > 0:
         num_string = "_" + str(file_count)
 
     short_filename = output_filename_prefix + num_string + ".gen." + extension
     output_filename = output_folder + "/" + short_filename
     if _verbose:
-        print("generating: " + short_filename)
+        print("SCU: Generating: %s" % short_filename)
 
     output_path = Path(output_filename)
     output_path.write_text(file_text, encoding="utf8")
@@ -97,7 +96,7 @@ def write_output_file(file_count, include_list, start_line, end_line, output_fol
 def write_exception_output_file(file_count, exception_string, output_folder, output_filename_prefix, extension):
     output_folder = os.path.abspath(output_folder)
     if not os.path.isdir(output_folder):
-        print("ERROR " + output_folder + " does not exist.")
+        print("SCU: ERROR: %s does not exist." % output_folder)
         return
 
     file_text = exception_string + "\n"
@@ -110,10 +109,8 @@ def write_exception_output_file(file_count, exception_string, output_folder, out
     output_filename = output_folder + "/" + short_filename
 
     if _verbose:
-        print("generating: " + short_filename)
+        print("SCU: Generating: " + short_filename)
 
-    # print("text: " + file_text)
-    # return
     output_path = Path(output_filename)
     output_path.write_text(file_text, encoding="utf8")
 
@@ -242,15 +239,15 @@ def process_folder(folders, sought_exceptions=[], includes_per_scu=0, extension=
         )
 
 
-def generate_scu_files(verbose, max_includes_per_scu):
+def generate_scu_files(max_includes_per_scu):
     print("=============================")
     print("Single Compilation Unit Build")
     print("=============================")
-    global _verbose
-    _verbose = verbose
+
     global _max_includes_per_scu
     _max_includes_per_scu = max_includes_per_scu
-    print("Generating SCU build files... (max includes per scu " + str(_max_includes_per_scu) + ")")
+
+    print("SCU: Generating build files... (max includes per SCU: %d)" % _max_includes_per_scu)
 
     curr_folder = os.path.abspath("./")
 
@@ -334,4 +331,7 @@ def generate_scu_files(verbose, max_includes_per_scu):
     # Finally change back the path to the calling folder
     os.chdir(curr_folder)
 
+    if _verbose:
+        print("SCU: Processed folders: %s" % sorted(_scu_folders))
+
     return _scu_folders