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kconfig: add named choice group

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As choice dependency are now fully checked, it's quite easy to add support
for named choices. This lifts the restriction that a choice value can only
appear once, although it still has to be within the same group,
but multiple choices can be joined by giving them a name.
While at it I cleaned up a little the choice type logic to simplify it a
bit.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

=======

Cherry-picked from the Linux kernel.

Change-Id: If0f00d1783907d606220cda5307b8960d3bfc38d
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3291
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Roman Zippel
2008-02-29 05:11:50 +01:00
committed by Ronald G. Minnich
parent 5750fddcba
commit 543aa7ba7b
6 changed files with 206 additions and 223 deletions
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13
util/kconfig/zconf.y
View File

@@ -91,7 +91,7 @@ static struct menu *current_menu, *current_entry;
%type <id> end
%type <id> option_name
%type <menu> if_entry menu_entry choice_entry
%type <string> symbol_option_arg
%type <string> symbol_option_arg word_opt
%destructor {
fprintf(stderr, "%s:%d: missing end statement for this entry\n",
@@ -239,10 +239,10 @@ symbol_option_arg:
/* choice entry */
choice: T_CHOICE T_EOL
choice: T_CHOICE word_opt T_EOL
{
struct symbol *sym = sym_lookup(NULL, 0);
sym->flags |= SYMBOL_CHOICE;
struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
sym->flags |= SYMBOL_AUTO;
menu_add_entry(sym);
menu_add_expr(P_CHOICE, NULL, NULL);
printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
@@ -456,9 +456,12 @@ expr: symbol { $$ = expr_alloc_symbol($1); }
;
symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
| T_WORD_QUOTE { $$ = sym_lookup($1, 1); free($1); }
| T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
;
word_opt: /* empty */ { $$ = NULL; }
| T_WORD
%%
void conf_parse(const char *name)