aboutsummaryrefslogtreecommitdiff
path: root/scripts/kconfig/conf.c
diff options
context:
space:
mode:
authorAristeu Rozanski <aris@redhat.com>2010-05-06 12:48:34 -0400
committerMichal Marek <mmarek@suse.cz>2010-06-02 14:40:09 +0200
commitf0778c8c41001783d4074e34efc7d3e632d87ee3 (patch)
tree8ab973e63d7ff30e1271b8954c8b6ec3cc7ea5ba /scripts/kconfig/conf.c
parent64ffc9ff424c65adcffe7d590018cc75e2d5d42a (diff)
downloadlinux-stericsson-f0778c8c41001783d4074e34efc7d3e632d87ee3.tar.gz
kconfig: introduce nonint_oldconfig and loose_nonint_oldconfig
This patch has been around for a long time in Fedora and Red Hat Enterprise Linux kernels and it may be useful for others. The nonint_oldconfig target will fail and print the unset config options while loose_nonint_oldconfig will simply let the config option unset. They're useful in distro kernel packages where the config files are built using a combination of smaller config files. Arjan van de Ven wrote the initial nonint_config and Roland McGrath added the loose_nonint_oldconfig. Signed-off-by: Arjan van de Ven <arjan@redhat.com> [defunct email] Whatevered-by: Kyle McMartin <kyle@redhat.com> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Aristeu Rozanski <aris@redhat.com> [mmarek: whitespace fixes] Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts/kconfig/conf.c')
-rw-r--r--scripts/kconfig/conf.c53
1 files changed, 44 insertions, 9 deletions
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 9960d1c303f8..3fa4abf3b084 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -16,6 +16,10 @@
#define LKC_DIRECT_LINK
#include "lkc.h"
+/* Return codes */
+#define EUNSETOPT 2 /* if -B and -b are used and unset config
+ * options were found */
+
static void conf(struct menu *menu);
static void check_conf(struct menu *menu);
@@ -23,6 +27,8 @@ enum {
ask_all,
ask_new,
ask_silent,
+ dont_ask,
+ dont_ask_dont_tell,
set_default,
set_yes,
set_mod,
@@ -37,6 +43,7 @@ static int sync_kconfig;
static int conf_cnt;
static char line[128];
static struct menu *rootEntry;
+static int unset_variables;
static void print_help(struct menu *menu)
{
@@ -360,7 +367,10 @@ static void conf(struct menu *menu)
switch (prop->type) {
case P_MENU:
- if (input_mode == ask_silent && rootEntry != menu) {
+ if ((input_mode == ask_silent ||
+ input_mode == dont_ask ||
+ input_mode == dont_ask_dont_tell) &&
+ rootEntry != menu) {
check_conf(menu);
return;
}
@@ -418,10 +428,23 @@ static void check_conf(struct menu *menu)
if (sym && !sym_has_value(sym)) {
if (sym_is_changable(sym) ||
(sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
- if (!conf_cnt++)
- printf(_("*\n* Restart config...\n*\n"));
- rootEntry = menu_get_parent_menu(menu);
- conf(rootEntry);
+ if (input_mode == dont_ask ||
+ input_mode == dont_ask_dont_tell) {
+ if (input_mode == dont_ask &&
+ sym->name && !sym_is_choice_value(sym)) {
+ if (!unset_variables)
+ fprintf(stderr, "The following"
+ " variables are not set:\n");
+ fprintf(stderr, "CONFIG_%s\n",
+ sym->name);
+ unset_variables++;
+ }
+ } else {
+ if (!conf_cnt++)
+ printf(_("*\n* Restart config...\n*\n"));
+ rootEntry = menu_get_parent_menu(menu);
+ conf(rootEntry);
+ }
}
}
@@ -439,7 +462,7 @@ int main(int ac, char **av)
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
- while ((opt = getopt(ac, av, "osdD:nmyrh")) != -1) {
+ while ((opt = getopt(ac, av, "osbBdD:nmyrh")) != -1) {
switch (opt) {
case 'o':
input_mode = ask_silent;
@@ -448,6 +471,12 @@ int main(int ac, char **av)
input_mode = ask_silent;
sync_kconfig = 1;
break;
+ case 'b':
+ input_mode = dont_ask;
+ break;
+ case 'B':
+ input_mode = dont_ask_dont_tell;
+ break;
case 'd':
input_mode = set_default;
break;
@@ -525,6 +554,8 @@ int main(int ac, char **av)
case ask_silent:
case ask_all:
case ask_new:
+ case dont_ask:
+ case dont_ask_dont_tell:
conf_read(NULL);
break;
case set_no:
@@ -586,12 +617,16 @@ int main(int ac, char **av)
conf(&rootmenu);
input_mode = ask_silent;
/* fall through */
+ case dont_ask:
+ case dont_ask_dont_tell:
case ask_silent:
/* Update until a loop caused no more changes */
do {
conf_cnt = 0;
check_conf(&rootmenu);
- } while (conf_cnt);
+ } while (conf_cnt &&
+ (input_mode != dont_ask &&
+ input_mode != dont_ask_dont_tell));
break;
}
@@ -607,11 +642,11 @@ int main(int ac, char **av)
fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
return 1;
}
- } else {
+ } else if (!unset_variables || input_mode != dont_ask) {
if (conf_write(NULL)) {
fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
exit(1);
}
}
- return 0;
+ return unset_variables ? EUNSETOPT : 0;
}