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| author | Sam Ravnborg <sam@ravnborg.org> | 2007-11-10 20:40:05 +0100 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2007-11-12 21:02:20 +0100 |
| commit | 2a113281f5cd2febbab21a93c8943f8d3eece4d3 (patch) | |
| tree | 12feb49c4531726c899f33a3a0dc1569ce8f217a | |
| parent | 0f855aa64b3f63d35a891510cf7db932a435c116 (diff) | |
| download | lwn-2a113281f5cd2febbab21a93c8943f8d3eece4d3.tar.gz lwn-2a113281f5cd2febbab21a93c8943f8d3eece4d3.zip | |
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 <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
| -rw-r--r-- | README | 2 | ||||
| -rw-r--r-- | scripts/kconfig/conf.c | 1 |
2 files changed, 3 insertions, 0 deletions
@@ -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 a38787a881ea..c6bee85c3962 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; |