path: root/README
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authorSam Ravnborg <sam@ravnborg.org>2007-11-10 20:40:05 +0100
committerSam Ravnborg <sam@ravnborg.org>2007-11-12 21:02:20 +0100
commit2a113281f5cd2febbab21a93c8943f8d3eece4d3 (patch)
tree12feb49c4531726c899f33a3a0dc1569ce8f217a /README
parent0f855aa64b3f63d35a891510cf7db932a435c116 (diff)
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>
Diffstat (limited to 'README')
1 files changed, 2 insertions, 0 deletions
diff --git a/README b/README
index 159912cf5155..592f8a238281 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

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