linux-toradex.git/scripts/kconfig/symbol.c, branch v2.6.27.31

kconfig: add named choice group

2008-04-28T21:05:48+00:00

As choice dependency are now fully checked, it's quite easy to add support
for named choices. This lifts the restriction that a choice value can only
appear once, although it still has to be within the same group,
but multiple choices can be joined by giving them a name.
While at it I cleaned up a little the choice type logic to simplify it a
bit.

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

kconfig: fix choice dependency check

2008-04-28T21:04:57+00:00

Properly check the dependency of choices as a group.
Also fix that sym_check_deps() correctly terminates the dependency loop
error check (otherwise it would continue printing the dependency chain).

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

kconfig: fix select in combination with default

2008-02-13T21:30:09+00:00

> The attached .config (with current -git) results in a compile
> error since it contains:
>
> CONFIG_X86=y
> # CONFIG_EMBEDDED is not set
> CONFIG_SERIO=m
> CONFIG_SERIO_I8042=y
>
> Looking at drivers/input/serio/Kconfig I simply don't get how this
> can happen.

You've hit the rather subtle rules of select vs default. What happened is
that SERIO is selected to m, but SERIO_I8042 isn't selected so the default
of y is used instead.
We already had the problem in the past that select and default don't work
well together, so this patch cleans this up and makes the rule hopefully
more straightforward. Basically now the value is calculated like this:

	(value && dependency) || select

where the value is the user choice (if available and the symbol is
visible) or default.

In this case it means SERIO and SERIO_I8042 are both set to y due to their
default and if SERIO didn't had the default, then the SERIO_I8042 value
would be limited to m due to the dependency.

I tested this patch with more 10000 random configs and above case is the
only the difference that showed up, so I hope there is nothing that
depended on the old more complex and subtle rules.

Signed-off-by: Roman Zippel 
Tested-by: Adrian Bunk 
Signed-off-by: Sam Ravnborg

kconfig: use environment option

2008-01-28T22:14:39+00:00

Use the environment option to provide the ARCH symbol
and the KERNELVERSION symbol.

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

kconfig: environment symbol support

2008-01-28T22:14:39+00:00

Add the possibility to import a value from the environment into kconfig
via the option syntax. Beside flexibility this has the advantage
providing proper dependencies.
Documented the options syntax.

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

kconfig: explicitly introduce expression list

2008-01-28T22:14:39+00:00

Rename E_CHOICE to E_LIST to explicitly add support for expression
lists. Add a helper macro expr_list_for_each_sym to more easily iterate
over the list.

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

kconfig: rename E_OR & friends to avoid name clash

2008-01-28T22:14:38+00:00

We had macros named the same as a set of enumeration values.
It is legal code but very confusing to read - so rename
the macros from E_* to EXPR_*

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

kconfig: error out if recursive dependencies are found

2007-05-06T07:20:10+00:00

Sample:
config FOO
	bool "This is foo"
	depends on BAR

config BAR
	bool "This is bar"
	depends on FOO

This will result in following error message:
error: found recursive dependency: FOO -> BAR -> FOO

And will then exit with exit code equal 1 so make will stop.
Inspired by patch from: Adrian Bunk 

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

[PATCH] kconfig: make sym_change_count static, let it be altered by 2 functions only

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

Those two functions are
	void sym_set_change_count(int count)
and
	void sym_add_change_count(int count)

All write accesses to sym_change_count are replaced by calls to above
functions.

Variable and changer-functions are moved to confdata.c.  IMO thats ok, as
sym_change_count is an attribute of the .config's change state.

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: add defconfig_list/module option

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

This makes it possible to change two options which were hardcoded sofar.
1. Any symbol can now take the role of CONFIG_MODULES
2. The more useful option is to change the list of default file names,
   which kconfig uses to load the base configuration if .config isn't
   available.

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