Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/g…

…it/mmarek/kbuild-2.6

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (25 commits)
  kconfig: Introduce IS_ENABLED(), IS_BUILTIN() and IS_MODULE()
  xconfig: Abort close if configuration cannot be saved
  kconfig: fix missing "0x" prefix from S_HEX symbol in autoconf.h
  kconfig/nconf: remove useless conditionnal
  kconfig/nconf: prevent segfault on empty menu
  kconfig/nconf: use the generic menu_get_ext_help()
  nconfig: Avoid Wunused-but-set warning
  kconfig/conf: mark xfgets() private
  kconfig: remove pending prototypes for kconfig_load()
  kconfig/conf: add command line options' description
  kconfig/conf: reduce the scope of `defconfig_file'
  kconfig: use calloc() for expr allocation
  kconfig: introduce specialized printer
  kconfig: do not overwrite symbol direct dependency in assignment
  kconfig/gconf: silent missing prototype warnings
  kconfig/gconf: kill deadcode
  kconfig: nuke LKC_DIRECT_LINK cruft
  kconfig: nuke reference to SWIG
  kconfig: add missing <stdlib.h> inclusion
  kconfig: add missing <ctype.h> inclusion
  ...

Fix up conflicts in scripts/kconfig/Makefile

Makefile

@@ -360,7 +360,7 @@ CFLAGS_GCOV	= -fprofile-arcs -ftest-coverage
 LINUXINCLUDE    := -I$(srctree)/arch/$(hdr-arch)/include \
                    -Iarch/$(hdr-arch)/include/generated -Iinclude \
                    $(if $(KBUILD_SRC), -I$(srctree)/include) \
-                   -include include/generated/autoconf.h
+                   -include $(srctree)/include/linux/kconfig.h
 
 KBUILD_CPPFLAGS := -D__KERNEL__
 

include/linux/kconfig.h

@@ -0,0 +1,32 @@
+#ifndef __LINUX_KCONFIG_H
+#define __LINUX_KCONFIG_H
+
+#include <generated/autoconf.h>
+
+/*
+ * Helper macros to use CONFIG_ options in C expressions. Note that
+ * these only work with boolean and tristate options.
+ */
+
+/*
+ * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
+ * 0 otherwise.
+ *
+ */
+#define IS_ENABLED(option) \
+	(__enabled_ ## option || __enabled_ ## option ## _MODULE)
+
+/*
+ * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0
+ * otherwise. For boolean options, this is equivalent to
+ * IS_ENABLED(CONFIG_FOO).
+ */
+#define IS_BUILTIN(option) __enabled_ ## option
+
+/*
+ * IS_MODULE(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'm', 0
+ * otherwise.
+ */
+#define IS_MODULE(option) __enabled_ ## option ## _MODULE
+
+#endif /* __LINUX_KCONFIG_H */

scripts/kconfig/Makefile

@@ -170,8 +170,8 @@ mconf-objs     := mconf.o zconf.tab.o $(lxdialog)
 nconf-objs     := nconf.o zconf.tab.o nconf.gui.o
 kxgettext-objs	:= kxgettext.o zconf.tab.o
 qconf-cxxobjs	:= qconf.o
-qconf-objs	:= kconfig_load.o zconf.tab.o
-gconf-objs	:= gconf.o kconfig_load.o zconf.tab.o
+qconf-objs	:= zconf.tab.o
+gconf-objs	:= gconf.o zconf.tab.o
 
 hostprogs-y := conf
 
@@ -203,7 +203,7 @@ ifeq ($(gconf-target),1)
 	hostprogs-y += gconf
 endif
 
-clean-files	:= lkc_defs.h qconf.moc .tmp_qtcheck .tmp_gtkcheck
+clean-files	:= qconf.moc .tmp_qtcheck .tmp_gtkcheck
 clean-files	+= zconf.tab.c zconf.lex.c zconf.hash.c gconf.glade.h
 clean-files     += mconf qconf gconf nconf
 clean-files     += config.pot linux.pot
@@ -226,12 +226,12 @@ HOSTCFLAGS_zconf.tab.o	:= -I$(src)
 LEX_PREFIX_zconf	:= zconf
 YACC_PREFIX_zconf	:= zconf
 
-HOSTLOADLIBES_qconf	= $(KC_QT_LIBS) -ldl
-HOSTCXXFLAGS_qconf.o	= $(KC_QT_CFLAGS) -D LKC_DIRECT_LINK
+HOSTLOADLIBES_qconf	= $(KC_QT_LIBS)
+HOSTCXXFLAGS_qconf.o	= $(KC_QT_CFLAGS)
 
-HOSTLOADLIBES_gconf	= `pkg-config --libs gtk+-2.0 gmodule-2.0 libglade-2.0` -ldl
+HOSTLOADLIBES_gconf	= `pkg-config --libs gtk+-2.0 gmodule-2.0 libglade-2.0`
 HOSTCFLAGS_gconf.o	= `pkg-config --cflags gtk+-2.0 gmodule-2.0 libglade-2.0` \
-                          -D LKC_DIRECT_LINK
+                          -Wno-missing-prototypes
 
 HOSTLOADLIBES_mconf   = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))
 
@@ -321,18 +321,11 @@ endif
 
 $(obj)/zconf.tab.o: $(obj)/zconf.lex.c $(obj)/zconf.hash.c
 
-$(obj)/kconfig_load.o: $(obj)/lkc_defs.h
-
-$(obj)/qconf.o: $(obj)/qconf.moc $(obj)/lkc_defs.h
-
-$(obj)/gconf.o: $(obj)/lkc_defs.h
+$(obj)/qconf.o: $(obj)/qconf.moc
 
 $(obj)/%.moc: $(src)/%.h
 	$(KC_QT_MOC) -i $< -o $@
 
-$(obj)/lkc_defs.h: $(src)/lkc_proto.h
-	$(Q)sed < $< > $@ 's/P(\([^,]*\),.*/#define \1 (\*\1_p)/'
-
 # Extract gconf menu items for I18N support
 $(obj)/gconf.glade.h: $(obj)/gconf.glade
 	$(Q)intltool-extract --type=gettext/glade --srcdir=$(srctree) \

scripts/kconfig/conf.c

@@ -14,11 +14,11 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
 static void conf(struct menu *menu);
 static void check_conf(struct menu *menu);
+static void xfgets(char *str, int size, FILE *in);
 
 enum input_mode {
 	oldaskconfig,
@@ -35,8 +35,6 @@ enum input_mode {
 	oldnoconfig,
 } input_mode = oldaskconfig;
 
-char *defconfig_file;
-
 static int indent = 1;
 static int valid_stdin = 1;
 static int sync_kconfig;
@@ -106,6 +104,7 @@ static int conf_askvalue(struct symbol *sym, const char *def)
 			return 0;
 		}
 		check_stdin();
+		/* fall through */
 	case oldaskconfig:
 		fflush(stdout);
 		xfgets(line, 128, stdin);
@@ -150,6 +149,7 @@ static int conf_string(struct menu *menu)
 				def = NULL;
 				break;
 			}
+			/* fall through */
 		default:
 			line[strlen(line)-1] = 0;
 			def = line;
@@ -304,6 +304,7 @@ static int conf_choice(struct menu *menu)
 				break;
 			}
 			check_stdin();
+			/* fall through */
 		case oldaskconfig:
 			fflush(stdout);
 			xfgets(line, 128, stdin);
@@ -369,6 +370,7 @@ static void conf(struct menu *menu)
 				check_conf(menu);
 				return;
 			}
+			/* fall through */
 		case P_COMMENT:
 			prompt = menu_get_prompt(menu);
 			if (prompt)
@@ -456,10 +458,30 @@ static struct option long_opts[] = {
 	{NULL, 0, NULL, 0}
 };
 
+static void conf_usage(const char *progname)
+{
+
+	printf("Usage: %s [option] <kconfig-file>\n", progname);
+	printf("[option] is _one_ of the following:\n");
+	printf("  --listnewconfig         List new options\n");
+	printf("  --oldaskconfig          Start a new configuration using a line-oriented program\n");
+	printf("  --oldconfig             Update a configuration using a provided .config as base\n");
+	printf("  --silentoldconfig       Same as oldconfig, but quietly, additionally update deps\n");
+	printf("  --oldnoconfig           Same as silentoldconfig but set new symbols to no\n");
+	printf("  --defconfig <file>      New config with default defined in <file>\n");
+	printf("  --savedefconfig <file>  Save the minimal current configuration to <file>\n");
+	printf("  --allnoconfig           New config where all options are answered with no\n");
+	printf("  --allyesconfig          New config where all options are answered with yes\n");
+	printf("  --allmodconfig          New config where all options are answered with mod\n");
+	printf("  --alldefconfig          New config with all symbols set to default\n");
+	printf("  --randconfig            New config with random answer to all options\n");
+}
+
 int main(int ac, char **av)
 {
+	const char *progname = av[0];
 	int opt;
-	const char *name;
+	const char *name, *defconfig_file = NULL /* gcc uninit */;
 	struct stat tmpstat;
 
 	setlocale(LC_ALL, "");
@@ -491,14 +513,24 @@ int main(int ac, char **av)
 			srand(seed);
 			break;
 		}
+		case oldaskconfig:
+		case oldconfig:
+		case allnoconfig:
+		case allyesconfig:
+		case allmodconfig:
+		case alldefconfig:
+		case listnewconfig:
+		case oldnoconfig:
+			break;
 		case '?':
-			fprintf(stderr, _("See README for usage info\n"));
+			conf_usage(progname);
 			exit(1);
 			break;
 		}
 	}
 	if (ac == optind) {
 		printf(_("%s: Kconfig file missing\n"), av[0]);
+		conf_usage(progname);
 		exit(1);
 	}
 	name = av[optind];
@@ -641,13 +673,11 @@ int main(int ac, char **av)
 	}
 	return 0;
 }
+
 /*
  * Helper function to facilitate fgets() by Jean Sacren.
  */
-void xfgets(str, size, in)
-	char *str;
-	int size;
-	FILE *in;
+void xfgets(char *str, int size, FILE *in)
 {
 	if (fgets(str, size, in) == NULL)
 		fprintf(stderr, "\nError in reading or end of file.\n");