Create dependencies for Kconfig file

From: Trent Piepho <xyzzy@speakeasy.org>

Add the ability to the make_kconfig.pl script to create a file
named ".kconfig.dep" which can be included in a Makefile and defines the
dependencies of the v4l/Kconfig file.  That is, all the individual
Kconfig files that were used to make it.

Added a rule to v4l/Makefile to remake Kconfig when needed, and include
.kconfig.deps to get Kconfig's dependencies.  Adjust the config targets
so that they depend on Kconfig, rather than including the commands to
create Kconfig in the config targets' scripts.  The config targets no
longer depend on .version, as they don't need it themselves.  Rather,
it's Kconfig that needs .version, so it's made one of Kconfig's
dependencies.

Add Kconfig as a dependency to .myconfig, it should be there since the
make_myconfig.pl script uses Kconfig.

Now if you change any of the Kconfig files, the v4l/Kconfig file will
automatically get remade.  This will in turn cause .myconfig to be
re-made, and any new options will appear in .myconfig (turned off).
Ideally this should trigger some kind of oldconfig system to update
.config.

Fix the .version rule so that instead of re-creating .version every time,
it is only created when it didn't already exist.  Since Kconfig depends
on .version, it was getting re-created every time too.  If .version
existed, it would just get re-created to the same thing anyway.

Stop echoing the echo srcdir command itself and don't echo anything if
SRCDIR is blank.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>

0 files changed, 0 insertions, 0 deletions