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-rw-r--r--scripts/kconfig/lkc_proto.h7
-rw-r--r--scripts/kconfig/preprocess.c19
-rw-r--r--scripts/kconfig/zconf.l3
-rw-r--r--scripts/kconfig/zconf.y5
4 files changed, 27 insertions, 7 deletions
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index 2b16d6e1b2db..6303193f43f2 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -49,8 +49,13 @@ const char * sym_get_string_value(struct symbol *sym);
const char * prop_get_type_name(enum prop_type type);
/* preprocess.c */
+enum variable_flavor {
+ VAR_SIMPLE,
+ VAR_RECURSIVE,
+};
void env_write_dep(FILE *f, const char *auto_conf_name);
-void variable_add(const char *name, const char *value);
+void variable_add(const char *name, const char *value,
+ enum variable_flavor flavor);
void variable_all_del(void);
char *expand_string(const char *in);
char *expand_dollar(const char **str);
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 46487fe6b36c..d103683b386e 100644
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -185,6 +185,7 @@ static LIST_HEAD(variable_list);
struct variable {
char *name;
char *value;
+ enum variable_flavor flavor;
struct list_head node;
};
@@ -203,15 +204,22 @@ static struct variable *variable_lookup(const char *name)
static char *variable_expand(const char *name, int argc, char *argv[])
{
struct variable *v;
+ char *res;
v = variable_lookup(name);
if (!v)
return NULL;
- return expand_string_with_args(v->value, argc, argv);
+ if (v->flavor == VAR_RECURSIVE)
+ res = expand_string_with_args(v->value, argc, argv);
+ else
+ res = xstrdup(v->value);
+
+ return res;
}
-void variable_add(const char *name, const char *value)
+void variable_add(const char *name, const char *value,
+ enum variable_flavor flavor)
{
struct variable *v;
@@ -224,7 +232,12 @@ void variable_add(const char *name, const char *value)
list_add_tail(&v->node, &variable_list);
}
- v->value = xstrdup(value);
+ v->flavor = flavor;
+
+ if (flavor == VAR_SIMPLE)
+ v->value = expand_string(value);
+ else
+ v->value = xstrdup(value);
}
static void variable_del(struct variable *v)
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index dd08f7a38ccd..376af6cf2f65 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -114,7 +114,8 @@ n [A-Za-z0-9_-]
yylval.string = text;
return T_VARIABLE;
}
- "=" { BEGIN(ASSIGN_VAL); return T_ASSIGN; }
+ "=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_RECURSIVE; return T_ASSIGN; }
+ ":=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_SIMPLE; return T_ASSIGN; }
[[:blank:]]+
. warn_ignored_character(*yytext);
\n {
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index e15e8c7063e0..6f9b0aa32a82 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -41,6 +41,7 @@ static struct menu *current_menu, *current_entry;
struct expr *expr;
struct menu *menu;
const struct kconf_id *id;
+ enum variable_flavor flavor;
}
%token <id>T_MAINMENU
@@ -78,7 +79,7 @@ static struct menu *current_menu, *current_entry;
%token T_OPEN_PAREN
%token T_EOL
%token <string> T_VARIABLE
-%token T_ASSIGN
+%token <flavor> T_ASSIGN
%token <string> T_ASSIGN_VAL
%left T_OR
@@ -517,7 +518,7 @@ word_opt: /* empty */ { $$ = NULL; }
/* assignment statement */
-assignment_stmt: T_VARIABLE T_ASSIGN assign_val T_EOL { variable_add($1, $3); free($1); free($3); }
+assignment_stmt: T_VARIABLE T_ASSIGN assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
assign_val:
/* empty */ { $$ = xstrdup(""); };