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authorSam Ravnborg <sam@mars.(none)>2005-07-25 20:10:36 +0000
committerSam Ravnborg <sam@mars.(none)>2005-07-25 20:10:36 +0000
commit8ec4b4ff1c89bb280e662b84eba503ca44abe836 (patch)
treed520638dd0288aba3cff6875928dfa7b7b20d2f1
parent7c6b155fb49fbc63e0b30a1d49552693c0b45be7 (diff)
downloadlinux-stericsson-8ec4b4ff1c89bb280e662b84eba503ca44abe836.tar.gz
kbuild: introduce Kbuild.include
Kbuild.include is a placeholder for definitions originally present in both the top-level Makefile and scripts/Makefile.build. There were a slight difference in the filechk definition, so the most videly used version was kept and usr/Makefile was adopted for this syntax. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> ---
-rw-r--r--Makefile74
-rw-r--r--scripts/Kbuild.include96
-rw-r--r--scripts/Makefile.build1
-rw-r--r--scripts/Makefile.lib94
-rw-r--r--scripts/Makefile.modinst2
-rw-r--r--scripts/Makefile.modpost1
-rw-r--r--usr/Makefile2
7 files changed, 103 insertions, 167 deletions
diff --git a/Makefile b/Makefile
index 7e4624a14586..7c607dc64479 100644
--- a/Makefile
+++ b/Makefile
@@ -309,6 +309,9 @@ 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 scripts/Kbuild.include
+
# For maximum performance (+ possibly random breakage, uncomment
# the following)
@@ -367,11 +370,6 @@ 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 := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc \) -prune -o
@@ -1285,72 +1283,6 @@ 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
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
new file mode 100644
index 000000000000..9087273abf91
--- /dev/null
+++ b/scripts/Kbuild.include
@@ -0,0 +1,96 @@
+####
+# kbuild: Generic definitions
+
+# Convinient variables
+comma := ,
+empty :=
+space := $(empty) $(empty)
+
+###
+# The temporary file to save gcc -MD generated dependencies must not
+# contain a comma
+depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
+
+###
+# 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
+# - stdin is piped in from the first prerequisite ($<) so one has
+# to specify a valid file as first prerequisite (often the kbuild file)
+define filechk
+ $(Q)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=
+# Usage:
+# $(Q)$(MAKE) $(build)=dir
+build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
+
+# If quiet is set, only print short version of command
+cmd = @$(if $($(quiet)cmd_$(1)),\
+ echo ' $(subst ','\'',$($(quiet)cmd_$(1)))' &&) $(cmd_$(1))
+
+###
+# if_changed - execute command if any prerequisite is newer than
+# target, or command line has changed
+# if_changed_dep - as if_changed, but uses fixdep to reveal dependencies
+# including used config symbols
+# if_changed_rule - as if_changed but execute rule instead
+# See Documentation/kbuild/makefiles.txt for more info
+
+ifneq ($(KBUILD_NOCMDDEP),1)
+# Check if both arguments has same arguments. Result in empty string if equal
+# User may override this check using make KBUILD_NOCMDDEP=1
+arg-check = $(strip $(filter-out $(1), $(2)) $(filter-out $(2), $(1)) )
+endif
+
+# echo command. Short version is $(quiet) equals quiet, otherwise full command
+echo-cmd = $(if $($(quiet)cmd_$(1)), \
+ echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';)
+
+# function to only execute the passed command if necessary
+# >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file
+# note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars
+#
+if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
+ @set -e; \
+ $(echo-cmd) \
+ $(cmd_$(1)); \
+ echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
+
+# execute the command and also postprocess generated .d dependencies
+# file
+if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
+ $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
+ @set -e; \
+ $(echo-cmd) \
+ $(cmd_$(1)); \
+ scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(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 $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\
+ @set -e; \
+ $(rule_$(1)))
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 282bfb310f5b..ebed6a41bc69 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -12,6 +12,7 @@ __build:
include $(if $(wildcard $(obj)/Kbuild), $(obj)/Kbuild, $(obj)/Makefile)
+include scripts/Kbuild.include
include scripts/Makefile.lib
ifdef host-progs
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 6e079f38a2c6..0f81dcfd6909 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -1,13 +1,3 @@
-# ===========================================================================
-# kbuild: Generic definitions
-# ===========================================================================
-
-# Standard vars
-
-comma := ,
-empty :=
-space := $(empty) $(empty)
-
# Backward compatibility - to be removed...
extra-y += $(EXTRA_TARGETS)
# Figure out what we need to build from the various variables
@@ -84,10 +74,6 @@ multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
-# The temporary file to save gcc -MD generated dependencies must not
-# contain a comma
-depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
-
# These flags are needed for modversions and compiling, so we define them here
# already
# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
@@ -179,84 +165,4 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
quiet_cmd_gzip = GZIP $@
cmd_gzip = gzip -f -9 < $< > $@
-# ===========================================================================
-# Generic stuff
-# ===========================================================================
-
-ifneq ($(KBUILD_NOCMDDEP),1)
-# Check if both arguments has same arguments. Result in empty string if equal
-# User may override this check using make KBUILD_NOCMDDEP=1
-arg-check = $(strip $(filter-out $(1), $(2)) $(filter-out $(2), $(1)) )
-
-endif
-
-# echo command. Short version is $(quiet) equals quiet, otherwise full command
-echo-cmd = $(if $($(quiet)cmd_$(1)), \
- echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';)
-
-# function to only execute the passed command if necessary
-# >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file
-# note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars
-#
-if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
- @set -e; \
- $(echo-cmd) \
- $(cmd_$(1)); \
- echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
-
-
-# execute the command and also postprocess generated .d dependencies
-# file
-
-if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
- $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
- @set -e; \
- $(echo-cmd) \
- $(cmd_$(1)); \
- scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(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 $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\
- @set -e; \
- $(rule_$(1)))
-
-# If quiet is set, only print short version of command
-
-cmd = @$(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))' &&) $(cmd_$(1))
-
-# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
-# Usage:
-# $(Q)$(MAKE) $(build)=dir
-build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
-
-# 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
- $(Q)set -e; \
- echo ' CHK $@'; \
- mkdir -p $(dir $@); \
- $(filechk_$(1)) $(2) > $@.tmp; \
- if [ -r $@ ] && cmp -s $@ $@.tmp; then \
- rm -f $@.tmp; \
- else \
- echo ' UPD $@'; \
- mv -f $@.tmp $@; \
- fi
-endef
diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
index 85d6494e3c24..23fd1bdc25ce 100644
--- a/scripts/Makefile.modinst
+++ b/scripts/Makefile.modinst
@@ -5,7 +5,7 @@
.PHONY: __modinst
__modinst:
-include scripts/Makefile.lib
+include scripts/Kbuild.include
#
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 94b550e21be8..0c4f3a9f2ea9 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -36,6 +36,7 @@
_modpost: __modpost
include .config
+include scripts/Kbuild.include
include scripts/Makefile.lib
symverfile := $(objtree)/Module.symvers
diff --git a/usr/Makefile b/usr/Makefile
index 248d5551029d..e2129cb570bb 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -27,7 +27,7 @@ quotefixed_initramfs_source := $(shell echo $(CONFIG_INITRAMFS_SOURCE))
filechk_initramfs_list = $(CONFIG_SHELL) \
$(srctree)/scripts/gen_initramfs_list.sh $(gen_initramfs_args) $(quotefixed_initramfs_source)
-$(obj)/initramfs_list: FORCE
+$(obj)/initramfs_list: $(obj)/Makefile FORCE
$(call filechk,initramfs_list)
quiet_cmd_cpio = CPIO $@