Commit face4374 authored by Roman Zippel's avatar Roman Zippel Committed by Sam Ravnborg
Browse files

kconfig: add defconfig_list/module option 



This makes it possible to change two options which were hardcoded sofar.
1. Any symbol can now take the role of CONFIG_MODULES
2. The more useful option is to change the list of default file names,
   which kconfig uses to load the base configuration if .config isn't
   available.

Signed-off-by: default avatarRoman Zippel <zippel@linux-m68k.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent f6a88aa8

init/Kconfig

+8 −0
Original line number Diff line number Diff line 
config DEFCONFIG_LIST

	string

	option defconfig_list

	default "/lib/modules/$UNAME_RELEASE/.config"

	default "/etc/kernel-config"

	default "/boot/config-$UNAME_RELEASE"

	default "arch/$ARCH/defconfig"



menu "Code maturity level options"



config EXPERIMENTAL

scripts/kconfig/confdata.c

+11 −15
Original line number Diff line number Diff line
@@ -25,15 +25,6 @@ const char conf_def_filename[] = ".config"; 


const char conf_defname[] = "arch/$ARCH/defconfig";



const char *conf_confnames[] = {

	".config",

	"/lib/modules/$UNAME_RELEASE/.config",

	"/etc/kernel-config",

	"/boot/config-$UNAME_RELEASE",

	conf_defname,

	NULL,

};



static void conf_warning(const char *fmt, ...)

{

	va_list ap;
@@ -98,16 +89,21 @@ int conf_read_simple(const char *name, int def) 
	if (name) {

		in = zconf_fopen(name);

	} else {

		const char **names = conf_confnames;

		name = *names++;

		if (!name)

			return 1;

		struct property *prop;



		name = conf_def_filename;

		in = zconf_fopen(name);

		if (in)

			goto load;

		sym_change_count++;

		while ((name = *names++)) {

			name = conf_expand_value(name);

		if (!sym_defconfig_list)

			return 1;



		for_all_defaults(sym_defconfig_list, prop) {

			if (expr_calc_value(prop->visible.expr) == no ||

			    prop->expr->type != E_SYMBOL)

				continue;

			name = conf_expand_value(prop->expr->left.sym->name);

			in = zconf_fopen(name);

			if (in) {

				printf(_("#\n"

scripts/kconfig/expr.h

+1 −0
Original line number Diff line number Diff line
@@ -156,6 +156,7 @@ struct file *lookup_file(const char *name); 


extern struct symbol symbol_yes, symbol_no, symbol_mod;

extern struct symbol *modules_sym;

extern struct symbol *sym_defconfig_list;

extern int cdebug;

struct expr *expr_alloc_symbol(struct symbol *sym);

struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);

scripts/kconfig/lkc.h

+1 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@ const char *str_get(struct gstr *gs); 
/* symbol.c */

void sym_init(void);

void sym_clear_all_valid(void);

void sym_set_all_changed(void);

void sym_set_changed(struct symbol *sym);

struct symbol *sym_check_deps(struct symbol *sym);

struct property *prop_alloc(enum prop_type type, struct symbol *sym);

scripts/kconfig/menu.c

+14 −0
Original line number Diff line number Diff line
@@ -154,6 +154,20 @@ void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep) 


void menu_add_option(int token, char *arg)

{

	struct property *prop;



	switch (token) {

	case T_OPT_MODULES:

		prop = prop_alloc(P_DEFAULT, modules_sym);

		prop->expr = expr_alloc_symbol(current_entry->sym);

		break;

	case T_OPT_DEFCONFIG_LIST:

		if (!sym_defconfig_list)

			sym_defconfig_list = current_entry->sym;

		else if (sym_defconfig_list != current_entry->sym)

			zconf_error("trying to redefine defconfig symbol");

		break;

	}

}



static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)

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