path: root/README
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authorSam Ravnborg <sam@ravnborg.org>2007-11-17 15:37:31 +0100
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-11-17 08:35:43 -0800
commit6840999b192b1b57d713ddee3761c457a2779036 (patch)
treee0fe2a7cafc373aa6b67fcf2b4a91e17215bca3a /README
parentd9f8bcbf67a0ee67c8cb0734f003dfe916bb5248 (diff)
x86: simplify "make ARCH=x86" and fix kconfig all.config
Simplify "make ARCH=x86" and fix kconfig so we again can set 64BIT in all.config. For a fix the diffstat is nice: 6 files changed, 3 insertions(+), 36 deletions(-) The patch reverts these commits: - 0f855aa64b3f63d35a891510cf7db932a435c116 ("kconfig: add helper to set config symbol from environment variable") - 2a113281f5cd2febbab21a93c8943f8d3eece4d3 ("kconfig: use $K64BIT to set 64BIT with all*config targets") Roman Zippel pointed out that kconfig supported string compares so the additional complexity introduced by the above two patches were not needed. With this patch we have following behaviour: # make {allno,allyes,allmod,rand}config [ARCH=...] option \ host arch | 32bit | 64bit ===================================================== ./. | 32bit | 64bit ARCH=x86 | 32bit | 32bit ARCH=i386 | 32bit | 32bit ARCH=x86_64 | 64bit | 64bit The general rule are that ARCH= and native architecture takes precedence over the configuration. So make ARCH=i386 [whatever] will always build a 32-bit kernel no matter what the configuration says. The configuration will be updated to 32-bit if it was configured to 64-bit and the other way around. This behaviour is consistent with previous behaviour so no suprises here. make ARCH=x86 will per default result in a 32-bit kernel but as the only ARCH= value x86 allow the user to select between 32-bit and 64-bit using menuconfig. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andreas Herrmann <aherrman@arcor.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'README')
1 files changed, 0 insertions, 2 deletions
diff --git a/README b/README
index 592f8a23828..159912cf515 100644
--- a/README
+++ b/README
@@ -194,8 +194,6 @@ 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