Merge branch 'modpost' of git://git.pengutronix.de/git/ukl/linux-2.6 into kbuild...

[net-next-2.6.git] / Makefile

diff --git a/Makefile b/Makefile
index 67d6cff6e4d4259cd0b2913a3d4eb7c0fff664a4..03053c66bb3abff93096989ac30d2759f41d8e7c 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 33
-EXTRAVERSION = -rc5
+EXTRAVERSION = -rc6
 NAME = Man-Eating Seals of Antiquity
 
 # *DOCUMENTATION*
@@ -183,11 +183,14 @@ SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 # CROSS_COMPILE can be set on the command line
 # make CROSS_COMPILE=ia64-linux-
 # Alternatively CROSS_COMPILE can be set in the environment.
+# A third alternative is to store a setting in .config so that plain
+# "make" in the configured kernel build directory always uses that.
 # Default value for CROSS_COMPILE is not to prefix executables
 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
 export KBUILD_BUILDHOST := $(SUBARCH)
 ARCH           ?= $(SUBARCH)
 CROSS_COMPILE  ?=
+CROSS_COMPILE  ?= $(CONFIG_CROSS_COMPILE:"%"=%)
 
 # Architecture as present in compile.h
 UTS_MACHINE    := $(ARCH)
@@ -907,14 +910,19 @@ endif
 #        $(localver)
 #          localversion*               (files without backups, containing '~')
 #          $(CONFIG_LOCALVERSION)      (from kernel config setting)
-#        $(localver-auto)              (only if CONFIG_LOCALVERSION_AUTO is set)
-#          ./scripts/setlocalversion   (SCM tag, if one exists)
-#          $(LOCALVERSION)             (from make command line if provided)
+#        $(LOCALVERSION)               (from make command line, if provided)
+#        $(localver-extra)
+#          $(scm-identifier)           (unique SCM tag, if one exists)
+#            ./scripts/setlocalversion (only with CONFIG_LOCALVERSION_AUTO)
+#            .scmversion               (only with CONFIG_LOCALVERSION_AUTO)
+#          +                           (only without CONFIG_LOCALVERSION_AUTO
+#                                       and without LOCALVERSION= and
+#                                       repository is at non-tagged commit)
 #
-#  Note how the final $(localver-auto) string is included *only* if the
-# kernel config option CONFIG_LOCALVERSION_AUTO is selected.  Also, at the
-# moment, only git is supported but other SCMs can edit the script
-# scripts/setlocalversion and add the appropriate checks as needed.
+# For kernels without CONFIG_LOCALVERSION_AUTO compiled from an SCM that has
+# been revised beyond a tagged commit, `+' is appended to the version string
+# when not overridden by using "make LOCALVERSION=".  This indicates that the
+# kernel is not a vanilla release version and has been modified.
 
 pattern = ".*/localversion[^~]*"
 string  = $(shell cat /dev/null \
@@ -923,26 +931,32 @@ string  = $(shell cat /dev/null \
 localver = $(subst $(space),, $(string) \
                              $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
 
-# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
-# and if the SCM is know a tag from the SCM is appended.
-# The appended tag is determined by the SCM used.
+# scripts/setlocalversion is called to create a unique identifier if the source
+# is managed by a known SCM and the repository has been revised since the last
+# tagged (release) commit.  The format of the identifier is determined by the
+# SCM's implementation.
 #
 # .scmversion is used when generating rpm packages so we do not loose
 # the version information from the SCM when we do the build of the kernel
 # from the copied source
-ifdef CONFIG_LOCALVERSION_AUTO
-
 ifeq ($(wildcard .scmversion),)
-        _localver-auto = $(shell $(CONFIG_SHELL) \
+        scm-identifier = $(shell $(CONFIG_SHELL) \
                          $(srctree)/scripts/setlocalversion $(srctree))
 else
-        _localver-auto = $(shell cat .scmversion 2> /dev/null)
+        scm-identifier = $(shell cat .scmversion 2> /dev/null)
 endif
 
-       localver-auto  = $(LOCALVERSION)$(_localver-auto)
+ifdef CONFIG_LOCALVERSION_AUTO
+       localver-extra = $(scm-identifier)
+else
+       ifneq ($scm-identifier,)
+               ifeq ($(LOCALVERSION),)
+                       localver-extra = +
+               endif
+       endif
 endif
 
-localver-full = $(localver)$(localver-auto)
+localver-full = $(localver)$(LOCALVERSION)$(localver-extra)
 
 # Store (new) KERNELRELASE string in include/config/kernel.release
 kernelrelease = $(KERNELVERSION)$(localver-full)
@@ -1247,7 +1261,9 @@ help:
        @echo  '  firmware_install- Install all firmware to INSTALL_FW_PATH'
        @echo  '                    (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
        @echo  '  dir/            - Build all files in dir and below'
-       @echo  '  dir/file.[ois]  - Build specified target only'
+       @echo  '  dir/file.[oisS] - Build specified target only'
+       @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
+       @echo  '                    (requires a recent binutils and recent build (System.map))'
        @echo  '  dir/file.ko     - Build module including final link'
        @echo  '  modules_prepare - Set up for building external modules'
        @echo  '  tags/TAGS       - Generate tags file for editors'