Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild

1 files changed, 64 insertions, 96 deletions

diff --git a/Makefile b/Makefile
index 2d68adbcfa28..63e5c9f0bc7a 100644
--- a/Makefile
+++ b/Makefile
@@ -109,10 +109,9 @@ $(if $(KBUILD_OUTPUT),, \
 .PHONY: $(MAKECMDGOALS)
 
 $(filter-out _all,$(MAKECMDGOALS)) _all:
-        $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT)         \
-        KBUILD_SRC=$(CURDIR)         KBUILD_VERBOSE=$(KBUILD_VERBOSE)   \
-        KBUILD_CHECK=$(KBUILD_CHECK) KBUILD_EXTMOD="$(KBUILD_EXTMOD)"   \
-        -f $(CURDIR)/Makefile $@
+        $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
+        KBUILD_SRC=$(CURDIR) \
+        KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
 
 # Leave processing to above invocation of make
 skip-makefile := 1
@@ -233,7 +232,7 @@ ifeq ($(MAKECMDGOALS),)
   KBUILD_MODULES := 1
 endif
 
-export KBUILD_MODULES KBUILD_BUILTIN KBUILD_VERBOSE
+export KBUILD_MODULES KBUILD_BUILTIN
 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 
 # Beautify output
@@ -309,6 +308,9 @@ cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
 # Look for make include files relative to root of kernel src
 MAKEFLAGS += --include-dir=$(srctree)
 
+# We need some generic definitions
+include  $(srctree)/scripts/Kbuild.include
+
 # For maximum performance (+ possibly random breakage, uncomment
 # the following)
 
@@ -348,7 +350,7 @@ LINUXINCLUDE    := -Iinclude \
 
 CPPFLAGS        := -D__KERNEL__ $(LINUXINCLUDE)
 
-CFLAGS          := -Wall -Wstrict-prototypes -Wno-trigraphs \
+CFLAGS          := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
                    -fno-strict-aliasing -fno-common \
                    -ffreestanding
 AFLAGS          := -D__ASSEMBLY__
@@ -367,11 +369,6 @@ export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
 # even be read-only.
 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 
-# The temporary file to save gcc -MD generated dependencies must not
-# contain a comma
-comma := ,
-depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
-
 # Files to ignore in find ... statements
 
 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg \) -prune -o
@@ -551,6 +548,26 @@ export KBUILD_IMAGE ?= vmlinux
 # images. Default is /boot, but you can set it to other values
 export  INSTALL_PATH ?= /boot
 
+# If CONFIG_LOCALVERSION_AUTO is set, we automatically perform some tests
+# and try to determine if the current source tree is a release tree, of any sort,
+# or if is a pure development tree.
+#
+# A 'release tree' is any tree with a git TAG associated
+# with it.  The primary goal of this is to make it safe for a native
+# git/CVS/SVN user to build a release tree (i.e, 2.6.9) and also to
+# continue developing against the current Linus tree, without having the Linus
+# tree overwrite the 2.6.9 tree when installed.
+#
+# Currently, only git is supported.
+# Other SCMs can edit scripts/setlocalversion and add the appropriate
+# checks as needed.
+
+
+ifdef CONFIG_LOCALVERSION_AUTO
+        localversion-auto := $(shell $(PERL) $(srctree)/scripts/setlocalversion $(srctree))
+        LOCALVERSION := $(LOCALVERSION)$(localversion-auto)
+endif
+
 #
 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
 # relocations required by build roots.  This is not defined in the
@@ -691,8 +708,10 @@ endef
 
 # Update vmlinux version before link
 # Use + in front of this rule to silent warning about make -j1
+# First command is ':' to allow us to use + in front of this rule
 cmd_ksym_ld = $(cmd_vmlinux__)
 define rule_ksym_ld
+        : 
         +$(call cmd,vmlinux_version)
         $(call cmd,vmlinux__)
         $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
@@ -722,6 +741,16 @@ quiet_cmd_kallsyms = KSYM    $@
 # Needs to visit scripts/ before $(KALLSYMS) can be used.
 $(KALLSYMS): scripts ;
 
+# Generate some data for debugging strange kallsyms problems
+debug_kallsyms: .tmp_map$(last_kallsyms)
+
+.tmp_map%: .tmp_vmlinux% FORCE
+        ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
+
+.tmp_map3: .tmp_map2
+
+.tmp_map2: .tmp_map1
+
 endif # ifdef CONFIG_KALLSYMS
 
 # vmlinux image - including updated kernel symbols
@@ -757,7 +786,7 @@ $(vmlinux-dirs): prepare-all scripts
 prepare2:
 ifneq ($(KBUILD_SRC),)
         @echo '  Using $(srctree) as source for kernel'
-        $(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; then \
+        $(Q)if [ -f $(srctree)/.config ]; then \
                 echo "  $(srctree) is not clean, please run 'make mrproper'";\
                 echo "  in the '$(srctree)' directory.";\
                 /bin/false; \
@@ -769,7 +798,8 @@ endif
 # prepare1 creates a makefile if using a separate output directory
 prepare1: prepare2 outputmakefile
 
-prepare0: prepare1 include/linux/version.h include/asm include/config/MARKER
+prepare0: prepare1 include/linux/version.h include/asm \
+                   include/config/MARKER
 ifneq ($(KBUILD_MODULES),)
         $(Q)rm -rf $(MODVERDIR)
         $(Q)mkdir -p $(MODVERDIR)
@@ -875,7 +905,7 @@ modules_install: _modinst_ _modinst_post
 
 .PHONY: _modinst_
 _modinst_:
-        @if [ -z "`$(DEPMOD) -V | grep module-init-tools`" ]; then \
+        @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
                 echo "Warning: you may need to install module-init-tools"; \
                 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
                 sleep 1; \
@@ -1159,37 +1189,49 @@ else
 __srctree = $(srctree)/
 endif
 
+ALLSOURCE_ARCHS := $(ARCH)
+
 define all-sources
         ( find $(__srctree) $(RCS_FIND_IGNORE) \
                \( -name include -o -name arch \) -prune -o \
                -name '*.[chS]' -print; \
-          find $(__srctree)arch/$(ARCH) $(RCS_FIND_IGNORE) \
-               -name '*.[chS]' -print; \
+          for ARCH in $(ALLSOURCE_ARCHS) ; do \
+               find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
+                    -name '*.[chS]' -print; \
+          done ; \
           find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
                -name '*.[chS]' -print; \
           find $(__srctree)include $(RCS_FIND_IGNORE) \
                \( -name config -o -name 'asm-*' \) -prune \
                -o -name '*.[chS]' -print; \
-          find $(__srctree)include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
-               -name '*.[chS]' -print; \
+          for ARCH in $(ALLSOURCE_ARCHS) ; do \
+               find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
+                    -name '*.[chS]' -print; \
+          done ; \
           find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
                -name '*.[chS]' -print )
 endef
 
 quiet_cmd_cscope-file = FILELST cscope.files
-      cmd_cscope-file = $(all-sources) > cscope.files
+      cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
 
 quiet_cmd_cscope = MAKE    cscope.out
-      cmd_cscope = cscope -k -b -q
+      cmd_cscope = cscope -b
 
 cscope: FORCE
         $(call cmd,cscope-file)
         $(call cmd,cscope)
 
 quiet_cmd_TAGS = MAKE   $@
-cmd_TAGS = $(all-sources) | etags -
+define cmd_TAGS
+        rm -f $@; \
+        ETAGSF=`etags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
+        $(all-sources) | xargs etags $$ETAGSF -a
+endef
+
+TAGS: FORCE
+        $(call cmd,TAGS)
 
-#       Exuberant ctags works better with -I
 
 quiet_cmd_tags = MAKE   $@
 define cmd_tags
@@ -1198,9 +1240,6 @@ define cmd_tags
         $(all-sources) | xargs ctags $$CTAGSF -a
 endef
 
-TAGS: FORCE
-        $(call cmd,TAGS)
-
 tags: FORCE
         $(call cmd,tags)
 
@@ -1268,82 +1307,11 @@ ifneq ($(cmd_files),)
   include $(cmd_files)
 endif
 
-# Execute command and generate cmd file
-if_changed = $(if $(strip $? \
-                          $(filter-out $(cmd_$(1)),$(cmd_$@))\
-                          $(filter-out $(cmd_$@),$(cmd_$(1)))),\
-        @set -e; \
-        $(if $($(quiet)cmd_$(1)),echo '  $(subst ','\'',$($(quiet)cmd_$(1)))';) \
-        $(cmd_$(1)); \
-        echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
-
-
-# execute the command and also postprocess generated .d dependencies
-# file
-if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
-                          $(filter-out $(cmd_$(1)),$(cmd_$@))\
-                          $(filter-out $(cmd_$@),$(cmd_$(1)))),\
-        $(Q)set -e; \
-        $(if $($(quiet)cmd_$(1)),echo '  $(subst ','\'',$($(quiet)cmd_$(1)))';) \
-        $(cmd_$(1)); \
-        scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \
-        rm -f $(depfile); \
-        mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd)
-
-# Usage: $(call if_changed_rule,foo)
-# will check if $(cmd_foo) changed, or any of the prequisites changed,
-# and if so will execute $(rule_foo)
-
-if_changed_rule = $(if $(strip $? \
-                               $(filter-out $(cmd_$(1)),$(cmd_$(@F)))\
-                               $(filter-out $(cmd_$(@F)),$(cmd_$(1)))),\
-                       $(Q)$(rule_$(1)))
-
-# If quiet is set, only print short version of command
-
-cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
-
-# filechk is used to check if the content of a generated file is updated.
-# Sample usage:
-# define filechk_sample
-#       echo $KERNELRELEASE
-# endef
-# version.h : Makefile
-#       $(call filechk,sample)
-# The rule defined shall write to stdout the content of the new file.
-# The existing file will be compared with the new one.
-# - If no file exist it is created
-# - If the content differ the new file is used
-# - If they are equal no change, and no timestamp update
-
-define filechk
-        @set -e;                                \
-        echo '  CHK     $@';                    \
-        mkdir -p $(dir $@);                     \
-        $(filechk_$(1)) < $< > $@.tmp;          \
-        if [ -r $@ ] && cmp -s $@ $@.tmp; then  \
-                rm -f $@.tmp;                   \
-        else                                    \
-                echo '  UPD     $@';            \
-                mv -f $@.tmp $@;                \
-        fi
-endef
-
-# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=dir
-# Usage:
-# $(Q)$(MAKE) $(build)=dir
-build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
-
 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
 # Usage:
 # $(Q)$(MAKE) $(clean)=dir
 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
 
-#       $(call descend,<dir>,<target>)
-#       Recursively call a sub-make in <dir> with target <target>
-# Usage is deprecated, because make does not see this as an invocation of make.
-descend =$(Q)$(MAKE) -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj=$(1) $(2)
-
 endif   # skip-makefile
 
 FORCE: