Commit 861b4ea4 broke oldnoconfig when removed the oldnoconfig checks on
                       if (input_mode == nonint_oldconfig ||
                           input_mode == oldnoconfig) {
                               if (input_mode == nonint_oldconfig &&
                                   sym->name &&
                                    !sym_is_choice_value(sym)) {
to avoid oldnoconfig chugging through the else stanza.

Fix that to restore expected behaviour (which I've confirmed in the
Fedora kernel build that the configs end up looking the same.)

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  kconfig: Fix warning: ignoring return value of 'fgets'
  kconfig: Fix warning: ignoring return value of 'fwrite'
  nconfig: Fix segfault when menu is empty
  kconfig: fix tristate choice with minimal config
  kconfig: fix savedefconfig for tristate choices

This fix facilitates fgets() either it returns on success or on error or
when end of file occurs.

Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

Linus wrote:
 This seems to make "make oldconfig" a _lot_ more verbose than it
 used to be. In a very annoying way.

 I just did a quick git bisect. It's introduced by commit 4062f1a4c030
 ("kconfig: use long options in conf") by Sam Ravnborg. Apparently that
 thing is totally buggy, and doesn't just change the option names, but
 actively breaks them.

The old behaviour (from years ago) were reintroduced by accident.  Fix
this so we are back to the version that are silent if there is nothing
to ask about.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

savedefconfig will save a minimal config to a file
named "defconfig".

The config symbols are saved in the same order as
they appear in the menu structure so it should
be possible to map them to the relevant menus
if desired.

The implementation was tested against several minimal
configs for arm which was created using brute-force.

There was one regression related to default numbers
which had their valid range further limited by another symbol.

Sample:

config FOO
	int "foo"
	default 4

config BAR
	int "bar"
	range 0 FOO

If FOO is set to 3 then BAR cannot take a value higher than 3.
But the current implementation will set BAR equal to 4.

This is seldomly used and the final configuration is OK,
and the fix was non-trivial.
So it was documented in the code and left as is.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>

alldefconfig create a configuration with all values set
to their default value (form the Kconfig files).

This may be useful when we try to use more sensible default
values and may also be used in combination with
the minimal defconfigs.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

Rename to a name that better match the other kconfig targets.

listnewconfig shall read as:

- list new options compared to current configuration

New options are now written to stdout so one can redirect the output.

Do not exit with an error code if there is new options.

These are feature changes compared to the original
nonint_oldconfig - but as this feature has not yet been in a
released kernel it should not matter.

It is still possible to do:

make listnewconfig
lookup new config options in Kconfig*
edit .config

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Aristeu Rozanski <aris@redhat.com>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

Rename target to something that fall more in line
with the other kconfig targets.

oldnoconfig shall read as:

- read the old configuration and set all new options to no

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

The list of options supported by conf is growing
and their abbreviation did not resemble anything usefull.

So drop the single letter options in favour of long options.

The long options are named equal to what we know from
the make target.
The internal implmentation was changed to match this,
resulting in much more readable code.

Support for short options is dropped - no one is supposed
to call this program direct anyway.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

Not sure if this is correct or not, but with
make menuconfig
  HOSTCC  scripts/kconfig/conf.o
scripts/kconfig/conf.c: In function 'conf_sym':
scripts/kconfig/conf.c:159:6: warning: variable 'type' set but not used
scripts/kconfig/conf.c: In function 'conf_choice':
scripts/kconfig/conf.c:231:6: warning: variable 'type' set but not used
  HOSTLD  scripts/kconfig/mconf

I get this using gcc 4.6.0 the below change fixes this form me.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>