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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-05-28 18:21:50 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-05-29 03:31:19 +0900 |
| commit | 1175c02506ffc9cef9f3c520249d8740a3174b1f (patch) | |
| tree | 4d95574d080570461e3483ec3b916b867463c6f3 /scripts/kconfig/zconf.y | |
| parent | 9ced3bddec080e974e910bf887715540a8d9d96b (diff) | |
| download | linux-rt-1175c02506ffc9cef9f3c520249d8740a3174b1f.tar.gz | |
kconfig: support simply expanded variable
The previous commit added variable and user-defined function. They
work similarly in the sense that the evaluation is deferred until
they are used.
This commit adds another type of variable, simply expanded variable,
as we see in Make.
The := operator defines a simply expanded variable, expanding the
righthand side immediately. This works like traditional programming
language variables.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/kconfig/zconf.y')
| -rw-r--r-- | scripts/kconfig/zconf.y | 5 |
1 files changed, 3 insertions, 2 deletions
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(""); }; |