which can modify the behaviour of the menu entry and its config
symbol. These options are currently possible:
- - "defconfig_list"
- This declares a list of default entries which can be used when
- looking for the default configuration (which is used when the main
- .config doesn't exists yet.)
-
- "modules"
This declares the symbol to be used as the MODULES symbol, which
enables the third modular state for all config symbols.
This environment variable can be used to specify a default kernel config
file name to override the default name of ".config".
+KCONFIG_DEFCONFIG_LIST
+----------------------
+
+This environment variable specifies a list of config files which can be used
+as a base configuration in case the .config does not exist yet. Entries in
+the list are separated with whitespaces to each other, and the first one
+that exists is used.
+
KCONFIG_OVERWRITECONFIG
-----------------------
If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not
# SPDX-License-Identifier: GPL-2.0-only
-config DEFCONFIG_LIST
- string
- depends on !UML
- option defconfig_list
- default "/lib/modules/$(shell,uname -r)/.config"
- default "/etc/kernel-config"
- default "/boot/config-$(shell,uname -r)"
- default "arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)"
-
config CC_VERSION_TEXT
string
default "$(CC_VERSION_TEXT)"
silent := -s
endif
+export KCONFIG_DEFCONFIG_LIST :=
+ifneq ($(SRCARCH),um)
+kernel-release := $(shell uname -r)
+KCONFIG_DEFCONFIG_LIST := \
+ /lib/modules/$(kernel-release)/.config \
+ /etc/kernel-config \
+ /boot/config-$(kernel-release) \
+ arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)
+endif
+
# We need this, in case the user has it in its environment
unexport CONFIG_
if (name) {
in = zconf_fopen(name);
} else {
- struct property *prop;
+ char *env;
name = conf_get_configname();
in = zconf_fopen(name);
if (in)
goto load;
sym_add_change_count(1);
- if (!sym_defconfig_list)
+
+ env = getenv("KCONFIG_DEFCONFIG_LIST");
+ if (!env)
return 1;
- for_all_defaults(sym_defconfig_list, prop) {
- if (expr_calc_value(prop->visible.expr) == no ||
- prop->expr->type != E_SYMBOL)
- continue;
- sym_calc_value(prop->expr->left.sym);
- name = sym_get_string_value(prop->expr->left.sym);
- in = zconf_fopen(name);
+ while (1) {
+ bool is_last;
+
+ while (isspace(*env))
+ env++;
+
+ if (!*env)
+ break;
+
+ p = env;
+ while (*p && !isspace(*p))
+ p++;
+
+ is_last = (*p == '\0');
+
+ *p = '\0';
+
+ in = zconf_fopen(env);
if (in) {
conf_message("using defaults found in %s",
- name);
+ env);
goto load;
}
+
+ if (is_last)
+ break;
+
+ env = p + 1;
}
}
if (!in)
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);
"def_bool" return T_DEF_BOOL;
"def_tristate" return T_DEF_TRISTATE;
"default" return T_DEFAULT;
-"defconfig_list" return T_DEFCONFIG_LIST;
"depends" return T_DEPENDS;
"endchoice" return T_ENDCHOICE;
"endif" return T_ENDIF;
void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
void menu_add_option_modules(void);
-void menu_add_option_defconfig_list(void);
void menu_add_option_allnoconfig_y(void);
void menu_finalize(struct menu *parent);
void menu_set_type(int type);
modules_sym = current_entry->sym;
}
-void menu_add_option_defconfig_list(void)
-{
- 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");
- sym_defconfig_list->flags |= SYMBOL_NO_WRITE;
-}
-
void menu_add_option_allnoconfig_y(void)
{
current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
%token T_COMMENT
%token T_CONFIG
%token T_DEFAULT
-%token T_DEFCONFIG_LIST
%token T_DEF_BOOL
%token T_DEF_TRISTATE
%token T_DEPENDS
menu_add_option_modules();
};
-config_option: T_OPTION T_DEFCONFIG_LIST T_EOL
-{
- menu_add_option_defconfig_list();
-};
-
config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
{
menu_add_option_allnoconfig_y();
.flags = SYMBOL_VALID,
};
-struct symbol *sym_defconfig_list;
struct symbol *modules_sym;
static tristate modules_val;
# Override 'srctree' environment to make the test as the top directory
extra_env['srctree'] = self._test_dir
+ # Clear KCONFIG_DEFCONFIG_LIST to keep unit tests from being affected
+ # by the user's environment.
+ extra_env['KCONFIG_DEFCONFIG_LIST'] = ''
+
# Run Kconfig in a temporary directory.
# This directory is automatically removed when done.
with tempfile.TemporaryDirectory() as temp_dir: