From 2a113281f5cd2febbab21a93c8943f8d3eece4d3 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sat, 10 Nov 2007 20:40:05 +0100 Subject: [PATCH] kconfig: use $K64BIT to set 64BIT with all*config targets The variable K64BIT can now be used to select the value of CONFIG_64BIT. This is for example useful for powerpc to generate allmodconfig for both bit sizes - like this: make ARCH=powerpc K64BIT=y make ARCH=powerpc K64BIT=n To use this the Kconfig file must use "64BIT" as the config value to select between 32 and 64 bit. Signed-off-by: Sam Ravnborg Cc: Roman Zippel --- README | 2 ++ scripts/kconfig/conf.c | 1 + 2 files changed, 3 insertions(+) diff --git a/README b/README index 159912cf515..592f8a23828 100644 --- a/README +++ b/README @@ -194,6 +194,8 @@ CONFIGURING the kernel: "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. + Finally it checks the environment variable K64BIT and if found, sets + the config symbol "64BIT" to the value of the K64BIT variable. 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 a38787a881e..c6bee85c396 100644 --- a/scripts/kconfig/conf.c +++ b/scripts/kconfig/conf.c @@ -591,6 +591,7 @@ int main(int ac, char **av) conf_read_simple(name, S_DEF_USER); else if (!stat("all.config", &tmpstat)) conf_read_simple("all.config", S_DEF_USER); + conf_set_env_sym("K64BIT", "64BIT", S_DEF_USER); break; default: break;