Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (53 commits)
  .gitignore: ignore *.lzma files
  kbuild: add generic --set-str option to scripts/config
  kbuild: simplify argument loop in scripts/config
  kbuild: handle non-existing options in scripts/config
  kallsyms: generalize text region handling
  kallsyms: support kernel symbols in Blackfin on-chip memory
  documentation: make version fix
  kbuild: fix a compile warning
  gitignore: Add GNU GLOBAL files to top .gitignore
  kbuild: fix delay in setlocalversion on readonly source
  README: fix misleading pointer to the defconf directory
  vmlinux.lds.h update
  kernel-doc: cleanup perl script
  Improve vmlinux.lds.h support for arch specific linker scripts
  kbuild: fix headers_exports with boolean expression
  kbuild/headers_check: refine extern check
  kbuild: fix "Argument list too long" error for "make headers_check",
  ignore *.patch files
  Remove bashisms from scripts
  menu: fix embedded menu presentation
  ...

Author: torvalds

.gitignore

@@ -25,6 +25,8 @@
 *.elf
 *.bin
 *.gz
+*.lzma
+*.patch
 
 #
 # Top-level generic files
@@ -62,6 +64,12 @@ series
 cscope.*
 ncscope.*
 
+# gnu global files
+GPATH
+GRTAGS
+GSYMS
+GTAGS
+
 *.orig
 *~
 \#*#

Documentation/Changes

@@ -29,7 +29,7 @@ hardware, for example, you probably needn't concern yourself with
 isdn4k-utils.
 
 o  Gnu C                  3.2                     # gcc --version
-o  Gnu make               3.79.1                  # make --version
+o  Gnu make               3.80                    # make --version
 o  binutils               2.12                    # ld -v
 o  util-linux             2.10o                   # fdformat --version
 o  module-init-tools      0.9.10                  # depmod -V
@@ -62,7 +62,7 @@ computer.
 Make
 ----
 
-You will need Gnu make 3.79.1 or later to build the kernel.
+You will need Gnu make 3.80 or later to build the kernel.
 
 Binutils
 --------

Documentation/kbuild/kconfig.txt

@@ -35,48 +35,26 @@ new .config files to see the differences:
 
 (Yes, we need something better here.)
 
-
-======================================================================
-menuconfig
---------------------------------------------------
-
-SEARCHING for CONFIG symbols
-
-Searching in menuconfig:
-
-	The Search function searches for kernel configuration symbol
-	names, so you have to know something close to what you are
-	looking for.
-
-	Example:
-		/hotplug
-		This lists all config symbols that contain "hotplug",
-		e.g., HOTPLUG, HOTPLUG_CPU, MEMORY_HOTPLUG.
-
-	For search help, enter / followed TAB-TAB-TAB (to highlight
-	<Help>) and Enter.  This will tell you that you can also use
-	regular expressions (regexes) in the search string, so if you
-	are not interested in MEMORY_HOTPLUG, you could try
-
-		/^hotplug
-
-
 ______________________________________________________________________
-Color Themes for 'menuconfig'
+Environment variables for '*config'
 
-It is possible to select different color themes using the variable
-MENUCONFIG_COLOR.  To select a theme use:
+KCONFIG_CONFIG
+--------------------------------------------------
+This environment variable can be used to specify a default kernel config
+file name to override the default name of ".config".
 
-	make MENUCONFIG_COLOR=<theme> menuconfig
+KCONFIG_OVERWRITECONFIG
+--------------------------------------------------
+If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not
+break symlinks when .config is a symlink to somewhere else.
 
-Available themes are:
-  mono       => selects colors suitable for monochrome displays
-  blackbg    => selects a color scheme with black background
-  classic    => theme with blue background. The classic look
-  bluetitle  => a LCD friendly version of classic. (default)
+KCONFIG_NOTIMESTAMP
+--------------------------------------------------
+If this environment variable exists and is non-null, the timestamp line
+in generated .config files is omitted.
 
 ______________________________________________________________________
-Environment variables in 'menuconfig'
+Environment variables for '{allyes/allmod/allno/rand}config'
 
 KCONFIG_ALLCONFIG
 --------------------------------------------------
@@ -95,8 +73,7 @@ values.
 This enables you to create "miniature" config (miniconfig) or custom
 config files containing just the config symbols that you are interested
 in.  Then the kernel config system generates the full .config file,
-including dependencies of your miniconfig file, based on the miniconfig
-file.
+including symbols of your miniconfig file.
 
 This 'KCONFIG_ALLCONFIG' file is a config file which contains
 (usually a subset of all) preset config symbols.  These variable
@@ -113,26 +90,14 @@ These examples will disable most options (allnoconfig) but enable or
 disable the options that are explicitly listed in the specified
 mini-config files.
 
+______________________________________________________________________
+Environment variables for 'silentoldconfig'
+
 KCONFIG_NOSILENTUPDATE
 --------------------------------------------------
 If this variable has a non-blank value, it prevents silent kernel
 config udpates (requires explicit updates).
 
-KCONFIG_CONFIG
---------------------------------------------------
-This environment variable can be used to specify a default kernel config
-file name to override the default name of ".config".
-
-KCONFIG_OVERWRITECONFIG
---------------------------------------------------
-If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not
-break symlinks when .config is a symlink to somewhere else.
-
-KCONFIG_NOTIMESTAMP
---------------------------------------------------
-If this environment variable exists and is non-null, the timestamp line
-in generated .config files is omitted.
-
 KCONFIG_AUTOCONFIG
 --------------------------------------------------
 This environment variable can be set to specify the path & name of the
@@ -143,15 +108,54 @@ KCONFIG_AUTOHEADER
 This environment variable can be set to specify the path & name of the
 "autoconf.h" (header) file.  Its default value is "include/linux/autoconf.h".
 
+
+======================================================================
+menuconfig
+--------------------------------------------------
+
+SEARCHING for CONFIG symbols
+
+Searching in menuconfig:
+
+	The Search function searches for kernel configuration symbol
+	names, so you have to know something close to what you are
+	looking for.
+
+	Example:
+		/hotplug
+		This lists all config symbols that contain "hotplug",
+		e.g., HOTPLUG, HOTPLUG_CPU, MEMORY_HOTPLUG.
+
+	For search help, enter / followed TAB-TAB-TAB (to highlight
+	<Help>) and Enter.  This will tell you that you can also use
+	regular expressions (regexes) in the search string, so if you
+	are not interested in MEMORY_HOTPLUG, you could try
+
+		/^hotplug
+
 ______________________________________________________________________
-menuconfig User Interface Options
-----------------------------------------------------------------------
+User interface options for 'menuconfig'
+
+MENUCONFIG_COLOR
+--------------------------------------------------
+It is possible to select different color themes using the variable
+MENUCONFIG_COLOR.  To select a theme use:
+
+	make MENUCONFIG_COLOR=<theme> menuconfig
+
+Available themes are:
+  mono       => selects colors suitable for monochrome displays
+  blackbg    => selects a color scheme with black background
+  classic    => theme with blue background. The classic look
+  bluetitle  => a LCD friendly version of classic. (default)
+
 MENUCONFIG_MODE
 --------------------------------------------------
 This mode shows all sub-menus in one large tree.
 
 Example:
-	MENUCONFIG_MODE=single_menu make menuconfig
+	make MENUCONFIG_MODE=single_menu menuconfig
+
 
 ======================================================================
 xconfig

Documentation/kbuild/modules.txt

@@ -275,7 +275,7 @@ following files:
 
 		KERNELDIR := /lib/modules/`uname -r`/build
 		all::
-			$(MAKE) -C $KERNELDIR M=`pwd` $@
+			$(MAKE) -C $(KERNELDIR) M=`pwd` $@
 
 		# Module specific targets
 		genbin:

Makefile

@@ -35,10 +35,8 @@ MAKEFLAGS += -rR --no-print-directory
 # To put more focus on warnings, be less verbose as default
 # Use 'make V=1' to see the full commands
 
-ifdef V
-  ifeq ("$(origin V)", "command line")
-    KBUILD_VERBOSE = $(V)
-  endif
+ifeq ("$(origin V)", "command line")
+  KBUILD_VERBOSE = $(V)
 endif
 ifndef KBUILD_VERBOSE
   KBUILD_VERBOSE = 0
@@ -54,10 +52,8 @@ endif
 # See the file "Documentation/sparse.txt" for more details, including
 # where to get the "sparse" utility.
 
-ifdef C
-  ifeq ("$(origin C)", "command line")
-    KBUILD_CHECKSRC = $(C)
-  endif
+ifeq ("$(origin C)", "command line")
+  KBUILD_CHECKSRC = $(C)
 endif
 ifndef KBUILD_CHECKSRC
   KBUILD_CHECKSRC = 0
@@ -69,12 +65,10 @@ endif
 ifdef SUBDIRS
   KBUILD_EXTMOD ?= $(SUBDIRS)
 endif
-ifdef M
-  ifeq ("$(origin M)", "command line")
-    KBUILD_EXTMOD := $(M)
-  endif
-endif
 
+ifeq ("$(origin M)", "command line")
+  KBUILD_EXTMOD := $(M)
+endif
 
 # kbuild supports saving output files in a separate directory.
 # To locate output files in a separate directory two syntaxes are supported.
@@ -98,10 +92,8 @@ ifeq ($(KBUILD_SRC),)
 
 # OK, Make called in directory where kernel src resides
 # Do we want to locate output files in a separate directory?
-ifdef O
-  ifeq ("$(origin O)", "command line")
-    KBUILD_OUTPUT := $(O)
-  endif
+ifeq ("$(origin O)", "command line")
+  KBUILD_OUTPUT := $(O)
 endif
 
 # That's our default target when none is given on the command line

README

@@ -174,8 +174,17 @@ CONFIGURING the kernel:
 	"make silentoldconfig"
 			   Like above, but avoids cluttering the screen
 			   with questions already answered.
+			   Additionally updates the dependencies.
 	"make defconfig"   Create a ./.config file by using the default
-			   symbol values from arch/$ARCH/defconfig.
+			   symbol values from either arch/$ARCH/defconfig
+			   or arch/$ARCH/configs/${PLATFORM}_defconfig,
+			   depending on the architecture.
+	"make ${PLATFORM}_defconfig"
+			  Create a ./.config file by using the default
+			  symbol values from
+			  arch/$ARCH/configs/${PLATFORM}_defconfig.
+			  Use "make help" to get a list of all available
+			  platforms of your architecture.
 	"make allyesconfig"
 			   Create a ./.config file by setting symbol
 			   values to 'y' as much as possible.