diff options
authorRandy Dunlap <>2006-04-18 22:21:53 -0700
committerLinus Torvalds <>2006-04-19 09:13:52 -0700
commit9dfb563b07b1aafcd7d40528ebfa7f9ce28f0556 (patch)
parent7420884c038f326bdac3a8ded856033523e7684e (diff)
[PATCH] config: update usage/help info
Replace outdated help message with a reference to README. Update README for make *config variants and environment variable info. Signed-off-by: Randy Dunlap <> Acked-by: Sam Ravnborg <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
2 files changed, 24 insertions, 2 deletions
diff --git a/README b/README
index 05e0555..3e26472 100644
--- a/README
+++ b/README
@@ -165,10 +165,31 @@ CONFIGURING the kernel:
"make xconfig" X windows (Qt) based configuration tool.
"make gconfig" X windows (Gtk) based configuration tool.
"make oldconfig" Default all questions based on the contents of
- your existing ./.config file.
+ your existing ./.config file and asking about
+ new config symbols.
"make silentoldconfig"
Like above, but avoids cluttering the screen
with questions already answered.
+ "make defconfig" Create a ./.config file by using the default
+ symbol values from arch/$ARCH/defconfig.
+ "make allyesconfig"
+ Create a ./.config file by setting symbol
+ values to 'y' as much as possible.
+ "make allmodconfig"
+ Create a ./.config file by setting symbol
+ values to 'm' as much as possible.
+ "make allnoconfig" Create a ./.config file by setting symbol
+ values to 'n' as much as possible.
+ "make randconfig" Create a ./.config file by setting symbol
+ values to random values.
+ The allyesconfig/allmodconfig/allnoconfig/randconfig variants can
+ also use the environment variable KCONFIG_ALLCONFIG to specify a
+ filename that contains config options that the user requires to be
+ set to a specific value. If KCONFIG_ALLCONFIG=filename is not used,
+ "make *config" checks for a file named "all{yes/mod/no/random}.config"
+ for symbol values that are to be forced. If this file is not found,
+ it checks for a file named "all.config" to contain forced values.
NOTES on "make config":
- having unnecessary drivers will make the kernel bigger, and can
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index ae5ab98..8012d10 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -5,6 +5,7 @@
#include <ctype.h>
#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
@@ -531,7 +532,7 @@ int main(int ac, char **av)
case 'h':
case '?':
- printf("%s [-o|-s] config\n", av[0]);
+ fprintf(stderr, "See README for usage info\n");
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