kconfig: use $K64BIT to set 64BIT with all*config targets

[linux-flexiantxendom0-natty.git] / README

diff --git a/README b/README
index 159912c..592f8a2 100644 (file)
--- 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