Improve v4l configuration scripts, handle versions.txt differently

From: Trent Piepho <xyzzy@speakeasy.org>

This mainly changes the way make_kconfig.pl handles config options that
require a newer kernel, as defined by versions.txt.  Currently it outputs
a blank config stanza defining the variable and setting it to 'n'.  These
show up as mysterious un-named grayed out options in xconfig, or just
don't appear at all in menuconfig.

The new method outputs an extra config stanza to the top of v4l/Kconfig,
VIDEO_KERNEL_VERSION.  This boolean variable defaults to 'n', and if
enabled, allows selecting drivers that are listed as needing a newer
kernel.  Config options that need a newer kernel still apear in
v4l/Kconfig with their names and help text, but they now have an
additional dependency on VIDEO_KERNEL_VERSION, and an extra bit in the
help text warning that they need a newer kernel.  They will appear greyed
out in xconfig, but will still have their proper names and help text.  If
the user turns VIDEO_KERNEL_VERSION on, then they can be enabled.  The
kernel version in versions.txt tends to be somewhat conservative.

The default v4l/.config file generated by make_kconfig.pl will have these
options set to no, instead of yes/module as it did before.
make_noconfig.pl will no longer look at versions.txt, or deal with kernel
version detection.  It will get a list of all config options by reading
v4l/Kconfig, and produce .myconfig by setting all bool/tristate options
to their value from v4l/.config, or 'n' if not listed.

A few bugs have been fixed, and the regexs adjusted.  They were making a
few mistakes before, or were otherwise flawed.  The scripts do more error
checking that the files they parse conform to the expected syntax.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvaho Chehab <mchehab@infradead.org>

0 files changed, 0 insertions, 0 deletions