linux.git/scripts/kconfig/conf.c, branch v2.6.24

kconfig: obey KCONFIG_ALLCONFIG choices with randconfig.

2007-12-23T20:54:37+00:00

Currently when using KCONFIG_ALLCONFIG with randconfig the choice options
are clobbered.  As recommended by Roman, this adds an is_new test to see
whether to select a new option or obey the existing one.

This is a resend of the earlier patch a couple of weeks ago, since there
was no reply.  Original thread is at http://lkml.org/lkml/2007/11/28/94

Signed-off-by: Paul Mundt 
Cc: Roman Zippel 
Cc: Sam Ravnborg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

x86: simplify "make ARCH=x86" and fix kconfig all.config

2007-11-17T16:35:43+00:00

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 
Cc: Roman Zippel 
Cc: Andreas Herrmann 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: "H. Peter Anvin" 
Signed-off-by: Linus Torvalds

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

2007-11-12T20:02:20+00:00

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

kconfig: oldconfig shall not set symbols if it does not need to

2007-09-01T06:24:09+00:00

Avoid setting the value if the symbol doesn't need to be changed or can't
be changed. Later choices may change the dependencies and thus the
possible input range.

make oldconfig from a 2.6.22 .config with CONFIG_HOTPLUG_CPU not set
was in some configurations setting CONFIG_HOTPLUG_CPU=y without asking,
even when there was no actual requirement for CONFIG_HOTPLUG_CPU.
This was triggered by SUSPEND_SMP that does a select HOTPLUG_CPU.

Signed-off-by: Roman Zippel 
Tested-by: Hugh Dickins 
Signed-off-by: Sam Ravnborg

kconfig: attach help text to menus

2007-07-25T19:14:26+00:00

Roman Zippel wrote:
> A simple example would be
> help texts, right now they are per symbol, but they should really be per
> menu, so archs can provide different help texts for something.

This patch does this and at the same time introduce a few API
funtions used to access the help text.

The relevant api functions are introduced in the various frontends.

Signed-off-by: Sam Ravnborg 
Cc: Roman Zippel

kbuild: be more explicit on missing .config file

2007-05-02T18:58:11+00:00

Somewhat in reponse to kernel bugzilla #8197, be more explicit about
why 'make all' fails when there is no .config file.

Signed-off-by: Randy Dunlap 
Signed-off-by: Sam Ravnborg

[PATCH] kconfig: new function "bool conf_get_changed(void)"

2006-12-13T17:05:48+00:00

Run "make xconfig" on a freshly untarred kernel-tree.  Look at the floppy disk
icon of the qt application, that has just started: Its in a normal, active
state.

Mouse click on it: .config is being saved.

This patch series changes things so taht
after the mouse click on the floppy disk icon, the icon is greyed out.
If you mouse click on it now, nothing happens.

If you change some CONFIG_*, the floppy disk icon returns to "active state",
that is, if you mouse click it now, .config is written.

This patch:

Returns sym_change_count to reflect the .config's change state.
All read only accesses of
	sym_change_count
are replaced by calls to
	conf_get_changed()
.
mconfig.c is manipulated to ask for saving only when
conf_get_changed() returned true.

Signed-off-by: Karsten Wiese 
Cc: Sam Ravnborg 
Cc: Roman Zippel 
Acked-by: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kconfig: exit if no beginning filename

2006-06-09T14:28:07+00:00

If the beginning Kconfig file is missing, config segfaults so it might as
well exit after the error message.

Signed-off-by: Randy Dunlap 
Cc: Roman Zippel 
Signed-off-by: Andrew Morton 
Signed-off-by: Sam Ravnborg

kconfig: allow loading multiple configurations

2006-06-09T05:31:30+00:00

Extend conf_read_simple() so it can load multiple configurations.

Signed-off-by: Roman Zippel 
Signed-off-by: Andrew Morton 
Signed-off-by: Sam Ravnborg

kconfig: fix .config dependencies

2006-06-09T05:31:30+00:00

This fixes one of the worst kbuild warts left - the broken dependencies used
to check and regenerate the .config file.  This was done via an indirect
dependency and the .config itself had an empty command, which can cause make
not to reread the changed .config file.

Instead of this we generate now a new file include/config/auto.conf from
.config, which is used for kbuild and has the proper dependencies.  It's also
the main make target now for all files generated during this step (and thus
replaces include/linux/autoconf.h).

This also means we can now relax the syntax requirements for the .config file
and we don't have to rewrite it all the time, i.e.  silentoldconfig only
writes .config now when it's necessary to keep it in sync with the Kconfig
files and even this can be suppressed by setting the environment variable
KCONFIG_NOSILENTUPDATE, so the update can (and must) be done manually.

Signed-off-by: Roman Zippel 
Signed-off-by: Andrew Morton 
Signed-off-by: Sam Ravnborg