build system overhaul
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
new file mode 100644
index 0000000..1f61fba
--- /dev/null
+++ b/scripts/kconfig/zconf.y
@@ -0,0 +1,681 @@
+%{
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+#include "zconf.hash.c"
+
+#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
+
+#define PRINTD 0x0001
+#define DEBUG_PARSE 0x0002
+
+int cdebug = PRINTD;
+
+extern int zconflex(void);
+static void zconfprint(const char *err, ...);
+static void zconf_error(const char *err, ...);
+static void zconferror(const char *err);
+static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken);
+
+struct symbol *symbol_hash[257];
+
+static struct menu *current_menu, *current_entry;
+
+#define YYDEBUG 0
+#if YYDEBUG
+#define YYERROR_VERBOSE
+#endif
+%}
+%expect 26
+
+%union
+{
+ char *string;
+ struct file *file;
+ struct symbol *symbol;
+ struct expr *expr;
+ struct menu *menu;
+ struct kconf_id *id;
+}
+
+%token <id>T_MAINMENU
+%token <id>T_MENU
+%token <id>T_ENDMENU
+%token <id>T_SOURCE
+%token <id>T_CHOICE
+%token <id>T_ENDCHOICE
+%token <id>T_COMMENT
+%token <id>T_CONFIG
+%token <id>T_MENUCONFIG
+%token <id>T_HELP
+%token <string> T_HELPTEXT
+%token <id>T_IF
+%token <id>T_ENDIF
+%token <id>T_DEPENDS
+%token <id>T_REQUIRES
+%token <id>T_OPTIONAL
+%token <id>T_PROMPT
+%token <id>T_TYPE
+%token <id>T_DEFAULT
+%token <id>T_SELECT
+%token <id>T_RANGE
+%token <id>T_ON
+%token <string> T_WORD
+%token <string> T_WORD_QUOTE
+%token T_UNEQUAL
+%token T_CLOSE_PAREN
+%token T_OPEN_PAREN
+%token T_EOL
+
+%left T_OR
+%left T_AND
+%left T_EQUAL T_UNEQUAL
+%nonassoc T_NOT
+
+%type <string> prompt
+%type <symbol> symbol
+%type <expr> expr
+%type <expr> if_expr
+%type <id> end
+%type <id> option_name
+%type <menu> if_entry menu_entry choice_entry
+
+%destructor {
+ fprintf(stderr, "%s:%d: missing end statement for this entry\n",
+ $$->file->name, $$->lineno);
+ if (current_menu == $$)
+ menu_end_menu();
+} if_entry menu_entry choice_entry
+
+%%
+input: stmt_list;
+
+stmt_list:
+ /* empty */
+ | stmt_list common_stmt
+ | stmt_list choice_stmt
+ | stmt_list menu_stmt
+ | stmt_list T_MAINMENU prompt nl
+ | stmt_list end { zconf_error("unexpected end statement"); }
+ | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
+ | stmt_list option_name error T_EOL
+{
+ zconf_error("unexpected option \"%s\"", kconf_id_strings + $2->name);
+}
+ | stmt_list error T_EOL { zconf_error("invalid statement"); }
+;
+
+option_name:
+ T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT
+;
+
+common_stmt:
+ T_EOL
+ | if_stmt
+ | comment_stmt
+ | config_stmt
+ | menuconfig_stmt
+ | source_stmt
+;
+
+option_error:
+ T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); }
+ | error T_EOL { zconf_error("invalid option"); }
+;
+
+
+/* config/menuconfig entry */
+
+config_entry_start: T_CONFIG T_WORD T_EOL
+{
+ struct symbol *sym = sym_lookup($2, 0);
+ sym->flags |= SYMBOL_OPTIONAL;
+ menu_add_entry(sym);
+ printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
+};
+
+config_stmt: config_entry_start config_option_list
+{
+ menu_end_entry();
+ printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
+};
+
+menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL
+{
+ struct symbol *sym = sym_lookup($2, 0);
+ sym->flags |= SYMBOL_OPTIONAL;
+ menu_add_entry(sym);
+ printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2);
+};
+
+menuconfig_stmt: menuconfig_entry_start config_option_list
+{
+ if (current_entry->prompt)
+ current_entry->prompt->type = P_MENU;
+ else
+ zconfprint("warning: menuconfig statement without prompt");
+ menu_end_entry();
+ printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
+};
+
+config_option_list:
+ /* empty */
+ | config_option_list config_option
+ | config_option_list depends
+ | config_option_list help
+ | config_option_list option_error
+ | config_option_list T_EOL
+;
+
+config_option: T_TYPE prompt_stmt_opt T_EOL
+{
+ menu_set_type($1->stype);
+ printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
+ zconf_curname(), zconf_lineno(),
+ $1->stype);
+};
+
+config_option: T_PROMPT prompt if_expr T_EOL
+{
+ menu_add_prompt(P_PROMPT, $2, $3);
+ printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_DEFAULT expr if_expr T_EOL
+{
+ menu_add_expr(P_DEFAULT, $2, $3);
+ if ($1->stype != S_UNKNOWN)
+ menu_set_type($1->stype);
+ printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
+ zconf_curname(), zconf_lineno(),
+ $1->stype);
+};
+
+config_option: T_SELECT T_WORD if_expr T_EOL
+{
+ menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3);
+ printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_RANGE symbol symbol if_expr T_EOL
+{
+ menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
+ printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
+};
+
+/* choice entry */
+
+choice: T_CHOICE T_EOL
+{
+ struct symbol *sym = sym_lookup(NULL, 0);
+ sym->flags |= SYMBOL_CHOICE;
+ menu_add_entry(sym);
+ menu_add_expr(P_CHOICE, NULL, NULL);
+ printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
+};
+
+choice_entry: choice choice_option_list
+{
+ $$ = menu_add_menu();
+};
+
+choice_end: end
+{
+ if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
+ menu_end_menu();
+ printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
+ }
+};
+
+choice_stmt: choice_entry choice_block choice_end
+;
+
+choice_option_list:
+ /* empty */
+ | choice_option_list choice_option
+ | choice_option_list depends
+ | choice_option_list help
+ | choice_option_list T_EOL
+ | choice_option_list option_error
+;
+
+choice_option: T_PROMPT prompt if_expr T_EOL
+{
+ menu_add_prompt(P_PROMPT, $2, $3);
+ printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+};
+
+choice_option: T_TYPE prompt_stmt_opt T_EOL
+{
+ if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) {
+ menu_set_type($1->stype);
+ printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
+ zconf_curname(), zconf_lineno(),
+ $1->stype);
+ } else
+ YYERROR;
+};
+
+choice_option: T_OPTIONAL T_EOL
+{
+ current_entry->sym->flags |= SYMBOL_OPTIONAL;
+ printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
+};
+
+choice_option: T_DEFAULT T_WORD if_expr T_EOL
+{
+ if ($1->stype == S_UNKNOWN) {
+ menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3);
+ printd(DEBUG_PARSE, "%s:%d:default\n",
+ zconf_curname(), zconf_lineno());
+ } else
+ YYERROR;
+};
+
+choice_block:
+ /* empty */
+ | choice_block common_stmt
+;
+
+/* if entry */
+
+if_entry: T_IF expr nl
+{
+ printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
+ menu_add_entry(NULL);
+ menu_add_dep($2);
+ $$ = menu_add_menu();
+};
+
+if_end: end
+{
+ if (zconf_endtoken($1, T_IF, T_ENDIF)) {
+ menu_end_menu();
+ printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
+ }
+};
+
+if_stmt: if_entry if_block if_end
+;
+
+if_block:
+ /* empty */
+ | if_block common_stmt
+ | if_block menu_stmt
+ | if_block choice_stmt
+;
+
+/* menu entry */
+
+menu: T_MENU prompt T_EOL
+{
+ menu_add_entry(NULL);
+ menu_add_prompt(P_MENU, $2, NULL);
+ printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
+};
+
+menu_entry: menu depends_list
+{
+ $$ = menu_add_menu();
+};
+
+menu_end: end
+{
+ if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
+ menu_end_menu();
+ printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
+ }
+};
+
+menu_stmt: menu_entry menu_block menu_end
+;
+
+menu_block:
+ /* empty */
+ | menu_block common_stmt
+ | menu_block menu_stmt
+ | menu_block choice_stmt
+;
+
+source_stmt: T_SOURCE prompt T_EOL
+{
+ printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
+ zconf_nextfile($2);
+};
+
+/* comment entry */
+
+comment: T_COMMENT prompt T_EOL
+{
+ menu_add_entry(NULL);
+ menu_add_prompt(P_COMMENT, $2, NULL);
+ printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
+};
+
+comment_stmt: comment depends_list
+{
+ menu_end_entry();
+};
+
+/* help option */
+
+help_start: T_HELP T_EOL
+{
+ printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
+ zconf_starthelp();
+};
+
+help: help_start T_HELPTEXT
+{
+ current_entry->sym->help = $2;
+};
+
+/* depends option */
+
+depends_list:
+ /* empty */
+ | depends_list depends
+ | depends_list T_EOL
+ | depends_list option_error
+;
+
+depends: T_DEPENDS T_ON expr T_EOL
+{
+ menu_add_dep($3);
+ printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
+}
+ | T_DEPENDS expr T_EOL
+{
+ menu_add_dep($2);
+ printd(DEBUG_PARSE, "%s:%d:depends\n", zconf_curname(), zconf_lineno());
+}
+ | T_REQUIRES expr T_EOL
+{
+ menu_add_dep($2);
+ printd(DEBUG_PARSE, "%s:%d:requires\n", zconf_curname(), zconf_lineno());
+};
+
+/* prompt statement */
+
+prompt_stmt_opt:
+ /* empty */
+ | prompt if_expr
+{
+ menu_add_prompt(P_PROMPT, $1, $2);
+};
+
+prompt: T_WORD
+ | T_WORD_QUOTE
+;
+
+end: T_ENDMENU T_EOL { $$ = $1; }
+ | T_ENDCHOICE T_EOL { $$ = $1; }
+ | T_ENDIF T_EOL { $$ = $1; }
+;
+
+nl:
+ T_EOL
+ | nl T_EOL
+;
+
+if_expr: /* empty */ { $$ = NULL; }
+ | T_IF expr { $$ = $2; }
+;
+
+expr: symbol { $$ = expr_alloc_symbol($1); }
+ | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
+ | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
+ | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
+ | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
+ | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
+ | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
+;
+
+symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
+ | T_WORD_QUOTE { $$ = sym_lookup($1, 1); free($1); }
+;
+
+%%
+
+void conf_parse(const char *name)
+{
+ struct symbol *sym;
+ int i;
+
+ zconf_initscan(name);
+
+ sym_init();
+ menu_init();
+ modules_sym = sym_lookup("MODULES", 0);
+ rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
+
+#if YYDEBUG
+ if (getenv("ZCONF_DEBUG"))
+ zconfdebug = 1;
+#endif
+ zconfparse();
+ if (zconfnerrs)
+ exit(1);
+ menu_finalize(&rootmenu);
+ for_all_symbols(i, sym) {
+ sym_check_deps(sym);
+ }
+
+ sym_change_count = 1;
+}
+
+const char *zconf_tokenname(int token)
+{
+ switch (token) {
+ case T_MENU: return "menu";
+ case T_ENDMENU: return "endmenu";
+ case T_CHOICE: return "choice";
+ case T_ENDCHOICE: return "endchoice";
+ case T_IF: return "if";
+ case T_ENDIF: return "endif";
+ case T_DEPENDS: return "depends";
+ }
+ return "<token>";
+}
+
+static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken)
+{
+ if (id->token != endtoken) {
+ zconf_error("unexpected '%s' within %s block",
+ kconf_id_strings + id->name, zconf_tokenname(starttoken));
+ zconfnerrs++;
+ return false;
+ }
+ if (current_menu->file != current_file) {
+ zconf_error("'%s' in different file than '%s'",
+ kconf_id_strings + id->name, zconf_tokenname(starttoken));
+ fprintf(stderr, "%s:%d: location of the '%s'\n",
+ current_menu->file->name, current_menu->lineno,
+ zconf_tokenname(starttoken));
+ zconfnerrs++;
+ return false;
+ }
+ return true;
+}
+
+static void zconfprint(const char *err, ...)
+{
+ va_list ap;
+
+ fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
+ va_start(ap, err);
+ vfprintf(stderr, err, ap);
+ va_end(ap);
+ fprintf(stderr, "\n");
+}
+
+static void zconf_error(const char *err, ...)
+{
+ va_list ap;
+
+ zconfnerrs++;
+ fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
+ va_start(ap, err);
+ vfprintf(stderr, err, ap);
+ va_end(ap);
+ fprintf(stderr, "\n");
+}
+
+static void zconferror(const char *err)
+{
+#if YYDEBUG
+ fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
+#endif
+}
+
+void print_quoted_string(FILE *out, const char *str)
+{
+ const char *p;
+ int len;
+
+ putc('"', out);
+ while ((p = strchr(str, '"'))) {
+ len = p - str;
+ if (len)
+ fprintf(out, "%.*s", len, str);
+ fputs("\\\"", out);
+ str = p + 1;
+ }
+ fputs(str, out);
+ putc('"', out);
+}
+
+void print_symbol(FILE *out, struct menu *menu)
+{
+ struct symbol *sym = menu->sym;
+ struct property *prop;
+
+ if (sym_is_choice(sym))
+ fprintf(out, "choice\n");
+ else
+ fprintf(out, "config %s\n", sym->name);
+ switch (sym->type) {
+ case S_BOOLEAN:
+ fputs(" boolean\n", out);
+ break;
+ case S_TRISTATE:
+ fputs(" tristate\n", out);
+ break;
+ case S_STRING:
+ fputs(" string\n", out);
+ break;
+ case S_INT:
+ fputs(" integer\n", out);
+ break;
+ case S_HEX:
+ fputs(" hex\n", out);
+ break;
+ default:
+ fputs(" ???\n", out);
+ break;
+ }
+ for (prop = sym->prop; prop; prop = prop->next) {
+ if (prop->menu != menu)
+ continue;
+ switch (prop->type) {
+ case P_PROMPT:
+ fputs(" prompt ", out);
+ print_quoted_string(out, prop->text);
+ if (!expr_is_yes(prop->visible.expr)) {
+ fputs(" if ", out);
+ expr_fprint(prop->visible.expr, out);
+ }
+ fputc('\n', out);
+ break;
+ case P_DEFAULT:
+ fputs( " default ", out);
+ expr_fprint(prop->expr, out);
+ if (!expr_is_yes(prop->visible.expr)) {
+ fputs(" if ", out);
+ expr_fprint(prop->visible.expr, out);
+ }
+ fputc('\n', out);
+ break;
+ case P_CHOICE:
+ fputs(" #choice value\n", out);
+ break;
+ default:
+ fprintf(out, " unknown prop %d!\n", prop->type);
+ break;
+ }
+ }
+ if (sym->help) {
+ int len = strlen(sym->help);
+ while (sym->help[--len] == '\n')
+ sym->help[len] = 0;
+ fprintf(out, " help\n%s\n", sym->help);
+ }
+ fputc('\n', out);
+}
+
+void zconfdump(FILE *out)
+{
+ struct property *prop;
+ struct symbol *sym;
+ struct menu *menu;
+
+ menu = rootmenu.list;
+ while (menu) {
+ if ((sym = menu->sym))
+ print_symbol(out, menu);
+ else if ((prop = menu->prompt)) {
+ switch (prop->type) {
+ case P_COMMENT:
+ fputs("\ncomment ", out);
+ print_quoted_string(out, prop->text);
+ fputs("\n", out);
+ break;
+ case P_MENU:
+ fputs("\nmenu ", out);
+ print_quoted_string(out, prop->text);
+ fputs("\n", out);
+ break;
+ default:
+ ;
+ }
+ if (!expr_is_yes(prop->visible.expr)) {
+ fputs(" depends ", out);
+ expr_fprint(prop->visible.expr, out);
+ fputc('\n', out);
+ }
+ fputs("\n", out);
+ }
+
+ if (menu->list)
+ menu = menu->list;
+ else if (menu->next)
+ menu = menu->next;
+ else while ((menu = menu->parent)) {
+ if (menu->prompt && menu->prompt->type == P_MENU)
+ fputs("\nendmenu\n", out);
+ if (menu->next) {
+ menu = menu->next;
+ break;
+ }
+ }
+ }
+}
+
+#include "lex.zconf.c"
+#include "util.c"
+#include "confdata.c"
+#include "expr.c"
+#include "symbol.c"
+#include "menu.c"