kconfig: allow build-time definition of the internal config prefix

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Michal Marek <mmarek@suse.cz>

6 files changed, 43 insertions, 34 deletions

diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index d56131c0b3c5..d6cfa0ffbaf0 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -425,7 +425,7 @@ static void check_conf(struct menu *menu)
                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
                         if (input_mode == listnewconfig) {
                                 if (sym->name && !sym_is_choice_value(sym)) {
-                                        printf("CONFIG_%s\n", sym->name);
+                                        printf("%s%s\n", CONFIG_, sym->name);
                                 }
                         } else if (input_mode != oldnoconfig) {
                                 if (!conf_cnt++)
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index d9181de78927..9f3c8899da5a 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -222,22 +222,22 @@ load:
                 conf_lineno++;
                 sym = NULL;
                 if (line[0] == '#') {
-                        if (memcmp(line + 2, "CONFIG_", 7))
+                        if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
                                 continue;
-                        p = strchr(line + 9, ' ');
+                        p = strchr(line + 2 + strlen(CONFIG_), ' ');
                         if (!p)
                                 continue;
                         *p++ = 0;
                         if (strncmp(p, "is not set", 10))
                                 continue;
                         if (def == S_DEF_USER) {
-                                sym = sym_find(line + 9);
+                                sym = sym_find(line + 2 + strlen(CONFIG_));
                                 if (!sym) {
                                         sym_add_change_count(1);
                                         break;
                                 }
                         } else {
-                                sym = sym_lookup(line + 9, 0);
+                                sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
                                 if (sym->type == S_UNKNOWN)
                                         sym->type = S_BOOLEAN;
                         }
@@ -253,8 +253,8 @@ load:
                         default:
                                 ;
                         }
-                } else if (memcmp(line, "CONFIG_", 7) == 0) {
-                        p = strchr(line + 7, '=');
+                } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
+                        p = strchr(line + strlen(CONFIG_), '=');
                         if (!p)
                                 continue;
                         *p++ = 0;
@@ -265,13 +265,13 @@ load:
                                         *p2 = 0;
                         }
                         if (def == S_DEF_USER) {
-                                sym = sym_find(line + 7);
+                                sym = sym_find(line + strlen(CONFIG_));
                                 if (!sym) {
                                         sym_add_change_count(1);
                                         break;
                                 }
                         } else {
-                                sym = sym_lookup(line + 7, 0);
+                                sym = sym_lookup(line + strlen(CONFIG_), 0);
                                 if (sym->type == S_UNKNOWN)
                                         sym->type = S_OTHER;
                         }
@@ -397,9 +397,9 @@ static void conf_write_string(bool headerfile, const char *name,
 {
         int l;
         if (headerfile)
-                fprintf(out, "#define CONFIG_%s \"", name);
+                fprintf(out, "#define %s%s \"", CONFIG_, name);
         else
-                fprintf(out, "CONFIG_%s=\"", name);
+                fprintf(out, "%s%s=\"", CONFIG_, name);
 
         while (1) {
                 l = strcspn(str, "\"\\");
@@ -425,13 +425,14 @@ static void conf_write_symbol(struct symbol *sym, enum symbol_type type,
                 switch (sym_get_tristate_value(sym)) {
                 case no:
                         if (write_no)
-                                fprintf(out, "# CONFIG_%s is not set\n", sym->name);
+                                fprintf(out, "# %s%s is not set\n",
+                                    CONFIG_, sym->name);
                         break;
                 case mod:
-                        fprintf(out, "CONFIG_%s=m\n", sym->name);
+                        fprintf(out, "%s%s=m\n", CONFIG_, sym->name);
                         break;
                 case yes:
-                        fprintf(out, "CONFIG_%s=y\n", sym->name);
+                        fprintf(out, "%s%s=y\n", CONFIG_, sym->name);
                         break;
                 }
                 break;
@@ -441,7 +442,7 @@ static void conf_write_symbol(struct symbol *sym, enum symbol_type type,
         case S_HEX:
         case S_INT:
                 str = sym_get_string_value(sym);
-                fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
+                fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);
                 break;
         case S_OTHER:
         case S_UNKNOWN:
@@ -832,14 +833,17 @@ int conf_write_autoconf(void)
                         case no:
                                 break;
                         case mod:
-                                fprintf(tristate, "CONFIG_%s=M\n", sym->name);
-                                fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
+                                fprintf(tristate, "%s%s=M\n",
+                                    CONFIG_, sym->name);
+                                fprintf(out_h, "#define %s%s_MODULE 1\n",
+                                    CONFIG_, sym->name);
                                 break;
                         case yes:
                                 if (sym->type == S_TRISTATE)
-                                        fprintf(tristate, "CONFIG_%s=Y\n",
-                                                        sym->name);
-                                fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
+                                        fprintf(tristate,"%s%s=Y\n",
+                                            CONFIG_, sym->name);
+                                fprintf(out_h, "#define %s%s 1\n",
+                                    CONFIG_, sym->name);
                                 break;
                         }
                         break;
@@ -849,12 +853,14 @@ int conf_write_autoconf(void)
                 case S_HEX:
                         str = sym_get_string_value(sym);
                         if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
-                                fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
+                                fprintf(out_h, "#define %s%s 0x%s\n",
+                                    CONFIG_, sym->name, str);
                                 break;
                         }
                 case S_INT:
                         str = sym_get_string_value(sym);
-                        fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
+                        fprintf(out_h, "#define %s%s %s\n",
+                            CONFIG_, sym->name, str);
                         break;
                 default:
                         break;
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index bdf71bd31412..1b966bf02b12 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -37,6 +37,9 @@ extern "C" {
 #define _(text) gettext(text)
 #define N_(text) (text)
 
+#ifndef CONFIG_
+#define CONFIG_ "CONFIG_"
+#endif
 
 #define TF_COMMAND      0x0001
 #define TF_PARAM        0x0002
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 5c3d0c4b810f..17ba2227932d 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -316,8 +316,8 @@ static void search_conf(void)
 again:
         dialog_clear();
         dres = dialog_inputbox(_("Search Configuration Parameter"),
-                              _("Enter CONFIG_ (sub)string to search for "
-                                "(with or without \"CONFIG\")"),
+                              _("Enter " CONFIG_ " (sub)string to search for "
+                                "(with or without \"" CONFIG_ "\")"),
                               10, 75, "");
         switch (dres) {
         case 0:
@@ -329,10 +329,10 @@ again:
                 return;
         }
 
-        /* strip CONFIG_ if necessary */
+        /* strip the prefix if necessary */
         dialog_input = dialog_input_result;
-        if (strncasecmp(dialog_input_result, "CONFIG_", 7) == 0)
-                dialog_input += 7;
+        if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
+                dialog_input += strlen(CONFIG_);
 
         sym_arr = sym_re_search(dialog_input);
         res = get_relations_str(sym_arr);
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index 4fb590247f33..64da30c76894 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -566,7 +566,7 @@ void menu_get_ext_help(struct menu *menu, struct gstr *help)
 
         if (menu_has_help(menu)) {
                 if (sym->name) {
-                        str_printf(help, "CONFIG_%s:\n\n", sym->name);
+                        str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
                         str_append(help, _(menu_get_help(menu)));
                         str_append(help, "\n");
                 }
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index b8a9f37b036b..da5e45d43f15 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -744,8 +744,8 @@ static void search_conf(void)
 again:
         dres = dialog_inputbox(main_window,
                         _("Search Configuration Parameter"),
-                        _("Enter CONFIG_ (sub)string to search for "
-                                "(with or without \"CONFIG\")"),
+                        _("Enter " CONFIG_ " (sub)string to search for "
+                                "(with or without \"" CONFIG_ "\")"),
                         "", dialog_input_result, 99);
         switch (dres) {
         case 0:
@@ -758,10 +758,10 @@ again:
                 return;
         }
 
-        /* strip CONFIG_ if necessary */
+        /* strip the prefix if necessary */
         dialog_input = dialog_input_result;
-        if (strncasecmp(dialog_input_result, "CONFIG_", 7) == 0)
-                dialog_input += 7;
+        if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
+                dialog_input += strlen(CONFIG_);
 
         sym_arr = sym_re_search(dialog_input);
         res = get_relations_str(sym_arr);
@@ -1261,7 +1261,7 @@ static void show_help(struct menu *menu)
 
         if (menu && menu->sym && menu_has_help(menu)) {
                 if (menu->sym->name) {
-                        str_printf(&help, "CONFIG_%s:\n\n", menu->sym->name);
+                        str_printf(&help, "%s%s:\n\n", CONFIG_, menu->sym->name);
                         str_append(&help, _(menu_get_help(menu)));
                         str_append(&help, "\n");
                         get_symbol_str(&help, menu->sym);