kconfiglib: Update README with info on kconfiglib modifications

Signed-off-by: Kevin O'Connor <[email protected]>

lib/README

@@ -81,4 +81,6 @@ revision ae3bb53c199fe75619e940b5b6a3584ede99c5fc
 
 The kconfiglib directory contains code from:
   https://github.com/ulfalizer/Kconfiglib.git
-version v14.1.0 (061e71f7d78cb057762d88de088055361863deff).
+version v14.1.0 (061e71f7d78cb057762d88de088055361863deff). It has
+been modified to always emit symbols and to simplify the "menuconfig"
+screens. See kconfiglib.patch for the modifications.

lib/kconfiglib/kconfiglib.patch

@@ -0,0 +1,147 @@
+diff --git a/lib/kconfiglib/kconfiglib.py b/lib/kconfiglib/kconfiglib.py
+index c67895ce..fb5e4b76 100644
+--- a/lib/kconfiglib/kconfiglib.py
++++ b/lib/kconfiglib/kconfiglib.py
+@@ -1475,8 +1475,8 @@ class Kconfig(object):
+             # instead, to avoid accessing the internal _write_to_conf variable
+             # (though it's likely to keep working).
+             val = sym.str_value
+-            if not sym._write_to_conf:
+-                continue
++            #if not sym._write_to_conf:
++            #    continue
+
+             if sym.orig_type in _BOOL_TRISTATE:
+                 if val == "y":
+@@ -1485,6 +1485,9 @@ class Kconfig(object):
+                 elif val == "m":
+                     add("#define {}{}_MODULE 1\n"
+                         .format(self.config_prefix, sym.name))
++                else:
++                    add("#define {}{} 0\n"
++                        .format(self.config_prefix, sym.name))
+
+             elif sym.orig_type is STRING:
+                 add('#define {}{} "{}"\n'
+@@ -1494,6 +1497,8 @@ class Kconfig(object):
+                 if sym.orig_type is HEX and \
+                    not val.startswith(("0x", "0X")):
+                     val = "0x" + val
++                if not val:
++                    val = "0"
+
+                 add("#define {}{} {}\n"
+                     .format(self.config_prefix, sym.name, val))
+diff --git a/lib/kconfiglib/menuconfig.py b/lib/kconfiglib/menuconfig.py
+index 7e765d36..900d88a1 100755
+--- a/lib/kconfiglib/menuconfig.py
++++ b/lib/kconfiglib/menuconfig.py
+@@ -259,10 +259,8 @@ _N_SCROLL_ARROWS = 14
+
+ # Lines of help text shown at the bottom of the "main" display
+ _MAIN_HELP_LINES = """
+-[Space/Enter] Toggle/enter  [ESC] Leave menu           [S] Save
+-[O] Load                    [?] Symbol info            [/] Jump to symbol
+-[F] Toggle show-help mode   [C] Toggle show-name mode  [A] Toggle show-all mode
+-[Q] Quit (prompts for save) [D] Save minimal config (advanced)
++[Space/Enter] Toggle/enter      [?] Help            [/] Search
++[Q] Quit (prompts for save)     [ESC] Leave menu
+ """[1:-1].split("\n")
+
+ # Lines of help text shown at the bottom of the information dialog
+@@ -890,17 +888,17 @@ def _menuconfig(stdscr):
+             else:
+                 _leave_menu()
+
+-        elif c in ("o", "O"):
++        elif 0 and c in ("o", "O"):
+             _load_dialog()
+
+-        elif c in ("s", "S"):
++        elif 0 and c in ("s", "S"):
+             filename = _save_dialog(_kconf.write_config, _conf_filename,
+                                     "configuration")
+             if filename:
+                 _conf_filename = filename
+                 _conf_changed = False
+
+-        elif c in ("d", "D"):
++        elif 0 and c in ("d", "D"):
+             filename = _save_dialog(_kconf.write_min_config, _minconf_filename,
+                                     "minimal configuration")
+             if filename:
+@@ -918,15 +916,15 @@ def _menuconfig(stdscr):
+             # dialog was open
+             _resize_main()
+
+-        elif c in ("f", "F"):
++        elif 0 and c in ("f", "F"):
+             _show_help = not _show_help
+             _set_style(_help_win, "show-help" if _show_help else "help")
+             _resize_main()
+
+-        elif c in ("c", "C"):
++        elif 0 and c in ("c", "C"):
+             _show_name = not _show_name
+
+-        elif c in ("a", "A"):
++        elif 0 and c in ("a", "A"):
+             _toggle_show_all()
+
+         elif c in ("q", "Q"):
+@@ -2552,11 +2550,11 @@ def _info_str(node):
+             _prompt_info(sym) +
+             "Type: {}\n".format(TYPE_TO_STR[sym.type]) +
+             _value_info(sym) +
+-            _help_info(sym) +
+-            _direct_dep_info(sym) +
+-            _defaults_info(sym) +
+-            _select_imply_info(sym) +
+-            _kconfig_def_info(sym)
++            _help_info(sym)
++            #_direct_dep_info(sym) +
++            #_defaults_info(sym) +
++            #_select_imply_info(sym) +
++            #_kconfig_def_info(sym)
+         )
+
+     if isinstance(node.item, Choice):
+@@ -2568,10 +2566,10 @@ def _info_str(node):
+             "Type: {}\n".format(TYPE_TO_STR[choice.type]) +
+             'Mode: {}\n'.format(choice.str_value) +
+             _help_info(choice) +
+-            _choice_syms_info(choice) +
+-            _direct_dep_info(choice) +
+-            _defaults_info(choice) +
+-            _kconfig_def_info(choice)
++            _choice_syms_info(choice)
++            #_direct_dep_info(choice) +
++            #_defaults_info(choice) +
++            #_kconfig_def_info(choice)
+         )
+
+     return _kconfig_def_info(node)  # node.item in (MENU, COMMENT)
+@@ -2588,10 +2586,12 @@ def _prompt_info(sc):
+     # Returns a string listing the prompts of 'sc' (Symbol or Choice)
+
+     s = ""
++    found = []
+
+     for node in sc.nodes:
+-        if node.prompt:
++        if node.prompt and node.prompt[0] not in found:
+             s += "Prompt: {}\n".format(node.prompt[0])
++            found.append(node.prompt[0])
+
+     return s
+
+@@ -2632,6 +2632,9 @@ def _help_info(sc):
+         if node.help is not None:
+             s += "Help:\n\n{}\n\n".format(_indent(node.help, 2))
+
++    if s == "\n":
++        s = "\nHelp: (No help available)\n\n"
++
+     return s
+
+