Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

Pull kconfig changes from Michal Marek:
 "I forgot to send a pull request in time for the v3.8-rc1 merge window,
  so the list is a bit longer this time:

   - menuconfig enables extended colors in ncurses if the wide-character
     version is used.

   - CONFIG_ prefix can be specified in the environment to make life
     easier for people using kconfig multiple times in a single tree (no
     functional change in the kernel kconfig usage).

   - kconfig aborts on OOM.

   - inputboxes in menuconfig allow to move the cursor.

   - menuconfig has Save/Load buttons now.

   - xconfig build fix with new g++ and Qt3.

   - nconfig color scheme fix and help text update.

   - make oldconfig prints newlines when output is redirected.

   - some other minor fixes."

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: Fix missing '\n' for NEW symbols in yes "" | make oldconfig >conf.new
  kconfig: nconf: rewrite labels of function keys line
  kconfig: nconf: rewrite help texts
  kconfig: fix a compiliation error when using make xconfig
  nconf: function keys line, change background color for better readability
  menuconfig: Get rid of the top-level entries for "Load an Alternate/Save an Alternate"
  menuconfig: Add Save/Load buttons
  kconfig:lxdialog: remove duplicate code
  menuconfig:inputbox: support navigate input position
  kconfig: document use of CONFIG_ environment variable
  scripts/kconfig: ensure we use proper CONFIG_ prefix
  merge_config.sh: Add option to specify output dir
  Revert "kconfig-language: add to hints"
  kconfig: Regenerate lexer
  kconfig: Fix malloc handling in conf tools
  kconfig: get CONFIG_ prefix from the environment
  kconfig: add a function to get the CONFIG_ prefix
  kconfig: remove CONFIG_ from string constants
  menuconfig: fix extended colors ncurses support

2 files changed, 6 insertions, 23 deletions

diff --git a/Documentation/kbuild/kconfig-language.txt b/Documentation/kbuild/kconfig-language.txt
index a686f9cd69c1..c858f8419eba 100644
--- a/Documentation/kbuild/kconfig-language.txt
+++ b/Documentation/kbuild/kconfig-language.txt
@@ -388,26 +388,3 @@ config FOO
 	depends on BAR && m
 
 limits FOO to module (=m) or disabled (=n).
-
-Kconfig symbol existence
-~~~~~~~~~~~~~~~~~~~~~~~~
-The following two methods produce the same kconfig symbol dependencies
-but differ greatly in kconfig symbol existence (production) in the
-generated config file.
-
-case 1:
-
-config FOO
-	tristate "about foo"
-	depends on BAR
-
-vs. case 2:
-
-if BAR
-config FOO
-	tristate "about foo"
-endif
-
-In case 1, the symbol FOO will always exist in the config file (given
-no other dependencies).  In case 2, the symbol FOO will only exist in
-the config file if BAR is enabled.
diff --git a/Documentation/kbuild/kconfig.txt b/Documentation/kbuild/kconfig.txt
index a09f1a6a830c..b8b77bbc784f 100644
--- a/Documentation/kbuild/kconfig.txt
+++ b/Documentation/kbuild/kconfig.txt
@@ -46,6 +46,12 @@ KCONFIG_OVERWRITECONFIG
 If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not
 break symlinks when .config is a symlink to somewhere else.
 
+CONFIG_
+--------------------------------------------------
+If you set CONFIG_ in the environment, Kconfig will prefix all symbols
+with its value when saving the configuration, instead of using the default,
+"CONFIG_".
+
 ______________________________________________________________________
 Environment variables for '{allyes/allmod/allno/rand}config'