[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Replace outdated help message with a reference to README.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 <rdunlap@xenotime.net> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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README
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README
@ -165,10 +165,31 @@ CONFIGURING the kernel:
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"make xconfig" X windows (Qt) based configuration tool.
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"make gconfig" X windows (Gtk) based configuration tool.
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"make oldconfig" Default all questions based on the contents of
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your existing ./.config file.
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your existing ./.config file and asking about
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new config symbols.
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"make silentoldconfig"
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Like above, but avoids cluttering the screen
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with questions already answered.
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"make defconfig" Create a ./.config file by using the default
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symbol values from arch/$ARCH/defconfig.
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"make allyesconfig"
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Create a ./.config file by setting symbol
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values to 'y' as much as possible.
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"make allmodconfig"
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Create a ./.config file by setting symbol
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values to 'm' as much as possible.
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"make allnoconfig" Create a ./.config file by setting symbol
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values to 'n' as much as possible.
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"make randconfig" Create a ./.config file by setting symbol
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values to random values.
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The allyesconfig/allmodconfig/allnoconfig/randconfig variants can
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also use the environment variable KCONFIG_ALLCONFIG to specify a
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filename that contains config options that the user requires to be
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set to a specific value. If KCONFIG_ALLCONFIG=filename is not used,
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"make *config" checks for a file named "all{yes/mod/no/random}.config"
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for symbol values that are to be forced. If this file is not found,
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it checks for a file named "all.config" to contain forced values.
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NOTES on "make config":
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- having unnecessary drivers will make the kernel bigger, and can
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@ -5,6 +5,7 @@
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <time.h>
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@ -531,7 +532,7 @@ int main(int ac, char **av)
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break;
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case 'h':
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case '?':
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printf("%s [-o|-s] config\n", av[0]);
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fprintf(stderr, "See README for usage info\n");
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exit(0);
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}
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}
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