Clean up our patches against kconfig

Our kconfig-to-buildroot2.patch hasn't been kept up to date with all
the changes made into package/config, and a single patch wasn't very
practical to maintain all our changes. Therefore, this commit adds a
package/config/patches directory, which contains a Quilt series of
patches that correspond to our modifications to the kconfig mechanism.

The huge kconfig-to-buildroot2.patch has been split into 16 smaller
patches. The purpose of some of the modifications has been clearly
identified, while some others were not identified.

The 16 patches together do match exactly the old
kconfig-to-buildroot2.patch. We have been very careful in making sure
that we wouldn't loose any of our modifications.

The only modifications made are :

 * Instead of renaming the kernel Makefile to Makefile.kconfig and
   naming the Buildroot Makefile just 'Makefile', we instead keep the
   original package/config/Makefile from the kernel
   scripts/kconfig/Makefile and name the Buildroot Makefile
   package/config/Makefile.br. The main Buildroot Makefile is modified
   accordingly.

 * The documentation README.buildroot2 is updated to explain how to
   upgrade to a newer version of scripts/kconfig.

 * The kconfig-language.txt documentation is removed, as anybody can
   easily find it in the kernel sources so there's no need to
   duplicate it here.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

1 files changed, 299 insertions, 0 deletions

diff --git a/package/config/patches/01-kconfig-kernel-to-buildroot.patch b/package/config/patches/01-kconfig-kernel-to-buildroot.patch
new file mode 100644
index 000000000..5fed731a4
--- /dev/null
+++ b/package/config/patches/01-kconfig-kernel-to-buildroot.patch
@@ -0,0 +1,299 @@
+---
+ conf.c              |   12 ++++++------
+ confdata.c          |   12 ++++--------
+ gconf.c             |    4 ++--
+ gconf.glade         |    2 +-
+ mconf.c             |   37 ++++++++++++++++++-------------------
+ qconf.cc            |    3 +--
+ zconf.tab.c_shipped |    2 +-
+ zconf.y             |    2 +-
+ 8 files changed, 34 insertions(+), 40 deletions(-)
+
+Index: config.clean/conf.c
+===================================================================
+--- config.clean.orig/conf.c
++++ config.clean/conf.c
+@@ -500,8 +500,8 @@
+ 	if (sync_kconfig) {
+ 		if (stat(".config", &tmpstat)) {
+ 			fprintf(stderr, _("***\n"
+-				"*** You have not yet configured your kernel!\n"
+-				"*** (missing kernel .config file)\n"
++				"*** You have not yet configured Buildroot!\n"
++				"*** (missing .config file)\n"
+ 				"***\n"
+ 				"*** Please run some configurator (e.g. \"make oldconfig\" or\n"
+ 				"*** \"make menuconfig\" or \"make xconfig\").\n"
+@@ -556,7 +556,7 @@
+ 			name = getenv("KCONFIG_NOSILENTUPDATE");
+ 			if (name && *name) {
+ 				fprintf(stderr,
+-					_("\n*** Kernel configuration requires explicit update.\n\n"));
++					_("\n*** Buildroot configuration requires explicit update.\n\n"));
+ 				return 1;
+ 			}
+ 		}
+@@ -599,16 +599,16 @@
+ 		 * All other commands are only used to generate a config.
+ 		 */
+ 		if (conf_get_changed() && conf_write(NULL)) {
+-			fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
++			fprintf(stderr, _("\n*** Error during writing of the Buildroot configuration.\n\n"));
+ 			exit(1);
+ 		}
+ 		if (conf_write_autoconf()) {
+-			fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
++			fprintf(stderr, _("\n*** Error during update of the Buildroot configuration.\n\n"));
+ 			return 1;
+ 		}
+ 	} else {
+ 		if (conf_write(NULL)) {
+-			fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
++			fprintf(stderr, _("\n*** Error during writing of the Buildroot configuration.\n\n"));
+ 			exit(1);
+ 		}
+ 	}
+Index: config.clean/confdata.c
+===================================================================
+--- config.clean.orig/confdata.c
++++ config.clean/confdata.c
+@@ -436,7 +436,7 @@
+ 	if (!out)
+ 		return 1;
+ 
+-	sym = sym_lookup("KERNELVERSION", 0);
++	sym = sym_lookup("BR2_VERSION", 0);
+ 	sym_calc_value(sym);
+ 	time(&now);
+ 	env = getenv("KCONFIG_NOTIMESTAMP");
+@@ -445,10 +445,8 @@
+ 
+ 	fprintf(out, _("#\n"
+ 		       "# Automatically generated make config: don't edit\n"
+-		       "# Linux kernel version: %s\n"
+ 		       "%s%s"
+ 		       "#\n"),
+-		     sym_get_string_value(sym),
+ 		     use_timestamp ? "# " : "",
+ 		     use_timestamp ? ctime(&now) : "");
+ 
+@@ -692,22 +690,20 @@
+ 		return 1;
+ 	}
+ 
+-	sym = sym_lookup("KERNELVERSION", 0);
++	sym = sym_lookup("BR2_VERSION", 0);
+ 	sym_calc_value(sym);
+ 	time(&now);
+ 	fprintf(out, "#\n"
+ 		     "# Automatically generated make config: don't edit\n"
+-		     "# Linux kernel version: %s\n"
+ 		     "# %s"
+ 		     "#\n",
+-		     sym_get_string_value(sym), ctime(&now));
++		     ctime(&now));
+ 	fprintf(out_h, "/*\n"
+ 		       " * Automatically generated C config: don't edit\n"
+-		       " * Linux kernel version: %s\n"
+ 		       " * %s"
+ 		       " */\n"
+ 		       "#define AUTOCONF_INCLUDED\n",
+-		       sym_get_string_value(sym), ctime(&now));
++		       ctime(&now));
+ 
+ 	for_all_symbols(i, sym) {
+ 		sym_calc_value(sym);
+Index: config.clean/gconf.c
+===================================================================
+--- config.clean.orig/gconf.c
++++ config.clean/gconf.c
+@@ -266,8 +266,8 @@
+ 					  /*"style", PANGO_STYLE_OBLIQUE, */
+ 					  NULL);
+ 
+-	sprintf(title, _("Linux Kernel v%s Configuration"),
+-		getenv("KERNELVERSION"));
++	sprintf(title, _("Buildroot v%s Configuration"),
++		getenv("BR2_VERSION"));
+ 	gtk_window_set_title(GTK_WINDOW(main_wnd), title);
+ 
+ 	gtk_widget_show(main_wnd);
+Index: config.clean/gconf.glade
+===================================================================
+--- config.clean.orig/gconf.glade
++++ config.clean/gconf.glade
+@@ -5,7 +5,7 @@
+ 
+ <widget class="GtkWindow" id="window1">
+   <property name="visible">True</property>
+-  <property name="title" translatable="yes">Gtk Kernel Configurator</property>
++  <property name="title" translatable="yes">Gtk Buildroot Configurator</property>
+   <property name="type">GTK_WINDOW_TOPLEVEL</property>
+   <property name="window_position">GTK_WIN_POS_NONE</property>
+   <property name="modal">False</property>
+Index: config.clean/mconf.c
+===================================================================
+--- config.clean.orig/mconf.c
++++ config.clean/mconf.c
+@@ -25,10 +25,9 @@
+ static const char mconf_readme[] = N_(
+ "Overview\n"
+ "--------\n"
+-"Some kernel features may be built directly into the kernel.\n"
+-"Some may be made into loadable runtime modules.  Some features\n"
++"Some features may be built directly into Buildroot. Some features\n"
+ "may be completely removed altogether.  There are also certain\n"
+-"kernel parameters which are not really features, but must be\n"
++"parameters which are not really features, but must be\n"
+ "entered in as decimal or hexadecimal numbers or possibly text.\n"
+ "\n"
+ "Menu items beginning with following braces represent features that\n"
+@@ -115,7 +114,7 @@
+ "-----------------------------\n"
+ "Menuconfig supports the use of alternate configuration files for\n"
+ "those who, for various reasons, find it necessary to switch\n"
+-"between different kernel configurations.\n"
++"between different configurations.\n"
+ "\n"
+ "At the end of the main menu you will find two options.  One is\n"
+ "for saving the current configuration to a file of your choosing.\n"
+@@ -148,7 +147,7 @@
+ "\n"
+ "Optional personality available\n"
+ "------------------------------\n"
+-"If you prefer to have all of the kernel options listed in a single\n"
++"If you prefer to have all of the options listed in a single\n"
+ "menu, rather than the default multimenu hierarchy, run the menuconfig\n"
+ "with MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
+ "\n"
+@@ -178,9 +177,9 @@
+ 	"Arrow keys navigate the menu.  "
+ 	"<Enter> selects submenus --->.  "
+ 	"Highlighted letters are hotkeys.  "
+-	"Pressing <Y> includes, <N> excludes, <M> modularizes features.  "
++	"Pressing <Y> selectes a feature, while <N> will exclude a feature.  "
+ 	"Press <Esc><Esc> to exit, <?> for Help, </> for Search.  "
+-	"Legend: [*] built-in  [ ] excluded  <M> module  < > module capable"),
++	"Legend: [*] feature is selected  [ ] feature is excluded"),
+ radiolist_instructions[] = N_(
+ 	"Use the arrow keys to navigate this window or "
+ 	"press the hotkey of the item you wish to select "
+@@ -200,18 +199,18 @@
+ 	"This feature depends on another which has been configured as a module.\n"
+ 	"As a result, this feature will be built as a module."),
+ nohelp_text[] = N_(
+-	"There is no help available for this kernel option.\n"),
++	"There is no help available for this option.\n"),
+ load_config_text[] = N_(
+ 	"Enter the name of the configuration file you wish to load.  "
+ 	"Accept the name shown to restore the configuration you "
+ 	"last retrieved.  Leave blank to abort."),
+ load_config_help[] = N_(
+ 	"\n"
+-	"For various reasons, one may wish to keep several different kernel\n"
++	"For various reasons, one may wish to keep several different Buildroot\n"
+ 	"configurations available on a single machine.\n"
+ 	"\n"
+ 	"If you have saved a previous configuration in a file other than the\n"
+-	"kernel's default, entering the name of the file here will allow you\n"
++	"Buildroot's default, entering the name of the file here will allow you\n"
+ 	"to modify that configuration.\n"
+ 	"\n"
+ 	"If you are uncertain, then you have probably never used alternate\n"
+@@ -221,7 +220,7 @@
+ 	"as an alternate.  Leave blank to abort."),
+ save_config_help[] = N_(
+ 	"\n"
+-	"For various reasons, one may wish to keep different kernel\n"
++	"For various reasons, one may wish to keep different Buildroot\n"
+ 	"configurations available on a single machine.\n"
+ 	"\n"
+ 	"Entering a file name here will allow you to later retrieve, modify\n"
+@@ -364,10 +363,10 @@
+ 	int size;
+ 	struct symbol *sym;
+ 
+-	sym = sym_lookup("KERNELVERSION", 0);
++	sym = sym_lookup("BR2_VERSION", 0);
+ 	sym_calc_value(sym);
+ 	size = snprintf(menu_backtitle, sizeof(menu_backtitle),
+-	                _("%s - Linux Kernel v%s Configuration"),
++	                _("%s - buildroot v%s Configuration"),
+ 		        config_filename, sym_get_string_value(sym));
+ 	if (size >= sizeof(menu_backtitle))
+ 		menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
+@@ -894,7 +893,7 @@
+ 		if (conf_get_changed())
+ 			res = dialog_yesno(NULL,
+ 					   _("Do you wish to save your "
+-					     "new kernel configuration?\n"
++					     "new Buildroot configuration?\n"
+ 					     "<ESC><ESC> to continue."),
+ 					   6, 60);
+ 		else
+@@ -906,20 +905,20 @@
+ 	case 0:
+ 		if (conf_write(filename)) {
+ 			fprintf(stderr, _("\n\n"
+-				"Error during writing of the kernel configuration.\n"
+-				"Your kernel configuration changes were NOT saved."
++				"Error during writing of the Buildroot configuration.\n"
++				"Your Buildroot configuration changes were NOT saved."
+ 				"\n\n"));
+ 			return 1;
+ 		}
+ 	case -1:
+ 		printf(_("\n\n"
+-			"*** End of Linux kernel configuration.\n"
+-			"*** Execute 'make' to build the kernel or try 'make help'."
++			"*** End of Buildroot configuration.\n"
++			"*** Execute 'make' to build Buildroot or try 'make help'."
+ 			"\n\n"));
+ 		break;
+ 	default:
+ 		fprintf(stderr, _("\n\n"
+-			"Your kernel configuration changes were NOT saved."
++			"Your Buildroot configuration changes were NOT saved."
+ 			"\n\n"));
+ 	}
+ 
+Index: config.clean/qconf.cc
+===================================================================
+--- config.clean.orig/qconf.cc
++++ config.clean/qconf.cc
+@@ -1276,8 +1276,7 @@
+ 	char title[256];
+ 
+ 	QWidget *d = configApp->desktop();
+-	snprintf(title, sizeof(title), _("Linux Kernel v%s Configuration"),
+-		getenv("KERNELVERSION"));
++	snprintf(title, sizeof(title), _("Buildroot Configuration"));
+ 	setCaption(title);
+ 
+ 	width = configSettings->readNumEntry("/window width", d->width() - 64);
+Index: config.clean/zconf.tab.c_shipped
+===================================================================
+--- config.clean.orig/zconf.tab.c_shipped
++++ config.clean/zconf.tab.c_shipped
+@@ -2259,7 +2259,7 @@
+ 	modules_sym = sym_lookup(NULL, 0);
+ 	modules_sym->type = S_BOOLEAN;
+ 	modules_sym->flags |= SYMBOL_AUTO;
+-	rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
++	rootmenu.prompt = menu_add_prompt(P_MENU, "Buildroot Configuration", NULL);
+ 
+ #if YYDEBUG
+ 	if (getenv("ZCONF_DEBUG"))
+Index: config.clean/zconf.y
+===================================================================
+--- config.clean.orig/zconf.y
++++ config.clean/zconf.y
+@@ -476,7 +476,7 @@
+ 	modules_sym = sym_lookup(NULL, 0);
+ 	modules_sym->type = S_BOOLEAN;
+ 	modules_sym->flags |= SYMBOL_AUTO;
+-	rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
++	rootmenu.prompt = menu_add_prompt(P_MENU, "Buildroot Configuration", NULL);
+ 
+ #if YYDEBUG
+ 	if (getenv("ZCONF_DEBUG"))