Yet another major rework of the BusyBox config system, using the considerably
modified Kbuild system I put into uClibc. With this, there should be no more
need to modify Rules.mak since I've moved all the interesting options into the
config system. I think I've got everything updated, but you never know, I may
have made some mistakes, so watch closely.
-Erik
diff --git a/scripts/config/confdata.c b/scripts/config/confdata.c
new file mode 100644
index 0000000..44835bb
--- /dev/null
+++ b/scripts/config/confdata.c
@@ -0,0 +1,371 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ *
+ * Allow 'n' as a symbol value.
+ * 2002-11-05 Petr Baudis <pasky@ucw.cz>
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+const char conf_def_filename[] = ".config";
+
+const char conf_defname[] = "extra/Configs/Config.$TARGET_ARCH.default";
+
+const char *conf_confnames[] = {
+ ".config",
+ conf_defname,
+ NULL,
+};
+
+static char *conf_expand_value(const char *in)
+{
+ struct symbol *sym;
+ const char *src;
+ static char res_value[SYMBOL_MAXLENGTH];
+ char *dst, name[SYMBOL_MAXLENGTH];
+
+ res_value[0] = 0;
+ dst = name;
+ while ((src = strchr(in, '$'))) {
+ strncat(res_value, in, src - in);
+ src++;
+ dst = name;
+ while (isalnum((int)*src) || *src == '_')
+ *dst++ = *src++;
+ *dst = 0;
+ sym = sym_lookup(name, 0);
+ sym_calc_value(sym);
+ strcat(res_value, sym_get_string_value(sym));
+ in = src;
+ }
+ strcat(res_value, in);
+
+ return res_value;
+}
+
+char *conf_get_default_confname(void)
+{
+ return conf_expand_value(conf_defname);
+}
+
+int conf_read(const char *name)
+{
+ FILE *in = NULL;
+ char line[1024];
+ char *p, *p2;
+ int lineno = 0;
+ struct symbol *sym;
+ struct property *prop;
+ struct expr *e;
+ int i;
+
+ if (name) {
+ in = fopen(name, "r");
+ } else {
+ const char **names = conf_confnames;
+ while ((name = *names++)) {
+ name = conf_expand_value(name);
+ in = fopen(name, "r");
+ if (in) {
+ printf("#\n"
+ "# using defaults found in %s\n"
+ "#\n", name);
+ break;
+ }
+ }
+ }
+
+ if (!in)
+ return 1;
+
+ for_all_symbols(i, sym) {
+ sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
+ sym->flags &= ~SYMBOL_VALID;
+ switch (sym->type) {
+ case S_INT:
+ case S_HEX:
+ case S_STRING:
+ if (S_VAL(sym->def))
+ free(S_VAL(sym->def));
+ default:
+ S_VAL(sym->def) = NULL;
+ S_TRI(sym->def) = no;
+ ;
+ }
+ }
+
+ while (fgets(line, sizeof(line), in)) {
+ lineno++;
+ switch (line[0]) {
+ case '\n':
+ break;
+ case ' ':
+ break;
+ case '#':
+ p = strchr(line, ' ');
+ if (!p)
+ continue;
+ *p++ = 0;
+ p = strchr(p, ' ');
+ if (!p)
+ continue;
+ *p++ = 0;
+ if (strncmp(p, "is not set", 10))
+ continue;
+ sym = sym_lookup(line+2, 0);
+ switch (sym->type) {
+ case S_BOOLEAN:
+ case S_TRISTATE:
+ sym->def = symbol_no.curr;
+ sym->flags &= ~SYMBOL_NEW;
+ break;
+ default:
+ ;
+ }
+ break;
+ case 'A' ... 'Z':
+ p = strchr(line, '=');
+ if (!p)
+ continue;
+ *p++ = 0;
+ p2 = strchr(p, '\n');
+ if (p2)
+ *p2 = 0;
+ sym = sym_find(line);
+ if (!sym) {
+ fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line);
+ break;
+ }
+ switch (sym->type) {
+ case S_TRISTATE:
+ if (p[0] == 'm') {
+ S_TRI(sym->def) = mod;
+ sym->flags &= ~SYMBOL_NEW;
+ break;
+ }
+ case S_BOOLEAN:
+ if (p[0] == 'y') {
+ S_TRI(sym->def) = yes;
+ sym->flags &= ~SYMBOL_NEW;
+ break;
+ }
+ if (p[0] == 'n') {
+ S_TRI(sym->def) = no;
+ sym->flags &= ~SYMBOL_NEW;
+ break;
+ }
+ break;
+ case S_STRING:
+ if (*p++ != '"')
+ break;
+ for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
+ if (*p2 == '"') {
+ *p2 = 0;
+ break;
+ }
+ memmove(p2, p2 + 1, strlen(p2));
+ }
+ case S_INT:
+ case S_HEX:
+ if (sym_string_valid(sym, p)) {
+ S_VAL(sym->def) = strdup(p);
+ sym->flags &= ~SYMBOL_NEW;
+ } else
+ fprintf(stderr, "%s:%d:symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
+ break;
+ default:
+ ;
+ }
+ if (sym_is_choice_value(sym)) {
+ prop = sym_get_choice_prop(sym);
+ switch (S_TRI(sym->def)) {
+ case mod:
+ if (S_TRI(prop->def->def) == yes)
+ /* warn? */;
+ break;
+ case yes:
+ if (S_TRI(prop->def->def) != no)
+ /* warn? */;
+ S_VAL(prop->def->def) = sym;
+ break;
+ case no:
+ break;
+ }
+ S_TRI(prop->def->def) = S_TRI(sym->def);
+ }
+ break;
+ default:
+ continue;
+ }
+ }
+ fclose(in);
+
+ for_all_symbols(i, sym) {
+ if (!sym_is_choice(sym))
+ continue;
+ prop = sym_get_choice_prop(sym);
+ for (e = prop->dep; e; e = e->left.expr)
+ sym->flags |= e->right.sym->flags & SYMBOL_NEW;
+ sym->flags &= ~SYMBOL_NEW;
+ }
+
+ sym_change_count = 1;
+
+ return 0;
+}
+
+int conf_write(const char *name)
+{
+ FILE *out, *out_h;
+ struct symbol *sym;
+ struct menu *menu;
+ char oldname[128];
+ int type, l;
+ const char *str;
+
+ out = fopen(".tmpconfig", "w");
+ if (!out)
+ return 1;
+ out_h = fopen(".tmpconfig.h", "w");
+ if (!out_h)
+ return 1;
+ fprintf(out, "#\n"
+ "# Automatically generated make config: don't edit\n"
+ "#\n");
+ fprintf(out_h, "/*\n"
+ " * Automatically generated header file: don't edit\n"
+ " */\n\n"
+ "#define AUTOCONF_INCLUDED\n\n"
+ "/* Version Number */\n"
+ "#define BB_VER \"%s\"\n"
+ "#define BB_BT \"%s\"\n\n",
+ getenv("VERSION"),
+ getenv("BUILDTIME")
+ );
+
+ if (!sym_change_count)
+ sym_clear_all_valid();
+
+ menu = rootmenu.list;
+ while (menu) {
+ sym = menu->sym;
+ if (!sym) {
+ if (!menu_is_visible(menu))
+ goto next;
+ str = menu_get_prompt(menu);
+ fprintf(out, "\n"
+ "#\n"
+ "# %s\n"
+ "#\n", str);
+ fprintf(out_h, "\n"
+ "/*\n"
+ " * %s\n"
+ " */\n", str);
+ } else if (!(sym->flags & SYMBOL_CHOICE)) {
+ sym_calc_value(sym);
+ if (!(sym->flags & SYMBOL_WRITE))
+ goto next;
+ sym->flags &= ~SYMBOL_WRITE;
+ type = sym->type;
+ if (type == S_TRISTATE) {
+ sym_calc_value(modules_sym);
+ if (S_TRI(modules_sym->curr) == no)
+ type = S_BOOLEAN;
+ }
+ switch (type) {
+ case S_BOOLEAN:
+ case S_TRISTATE:
+ switch (sym_get_tristate_value(sym)) {
+ case no:
+ fprintf(out, "# %s is not set\n", sym->name);
+ fprintf(out_h, "#undef %s\n", sym->name);
+ break;
+ case mod:
+#if 0
+ fprintf(out, "%s=m\n", sym->name);
+ fprintf(out_h, "#define __%s__MODULE 1\n", sym->name);
+#endif
+ break;
+ case yes:
+ fprintf(out, "%s=y\n", sym->name);
+ fprintf(out_h, "#define %s 1\n", sym->name);
+ break;
+ }
+ break;
+ case S_STRING:
+ // fix me
+ str = sym_get_string_value(sym);
+ fprintf(out, "%s=\"", sym->name);
+ fprintf(out_h, "#define %s \"", sym->name);
+ do {
+ l = strcspn(str, "\"\\");
+ if (l) {
+ fwrite(str, l, 1, out);
+ fwrite(str, l, 1, out_h);
+ }
+ str += l;
+ while (*str == '\\' || *str == '"') {
+ fprintf(out, "\\%c", *str);
+ fprintf(out_h, "\\%c", *str);
+ str++;
+ }
+ } while (*str);
+ fputs("\"\n", out);
+ fputs("\"\n", out_h);
+ break;
+ case S_HEX:
+ str = sym_get_string_value(sym);
+ if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
+ fprintf(out, "%s=%s\n", sym->name, str);
+ fprintf(out_h, "#define %s 0x%s\n", sym->name, str);
+ break;
+ }
+ case S_INT:
+ str = sym_get_string_value(sym);
+ fprintf(out, "%s=%s\n", sym->name, str);
+ fprintf(out_h, "#define %s %s\n", sym->name, str);
+ break;
+ }
+ }
+
+ next:
+ if (menu->list) {
+ menu = menu->list;
+ continue;
+ }
+ if (menu->next)
+ menu = menu->next;
+ else while ((menu = menu->parent)) {
+ if (menu->next) {
+ menu = menu->next;
+ break;
+ }
+ }
+ }
+ fclose(out);
+ fclose(out_h);
+
+ if (!name) {
+ rename(".tmpconfig.h", "include/config.h");
+ name = conf_def_filename;
+ file_write_dep(NULL);
+ } else
+ unlink(".tmpconfig.h");
+
+ sprintf(oldname, "%s.old", name);
+ rename(name, oldname);
+ if (rename(".tmpconfig", name))
+ return 1;
+
+ sym_change_count = 0;
+
+ return 0;
+}