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Commit 675f908d authored by Sam Ravnborg's avatar Sam Ravnborg
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kbuild: scrits/Makefile.lib 

Moved generic definitions to Makefile.lib,
This allows us to share all generic definitions between the different Makefiles.
Performance impact has been measured to less than 1%
parent 54a6c2fc
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Showing with 191 additions and 189 deletions
scripts/Makefile.build
View file @ 675f908d
......@@ -11,12 +11,7 @@ include .config
include $(obj)/Makefile
# Standard vars
comma := ,
# bug traps
# ===========================================================================
include scripts/Makefile.lib
ifdef O_TARGET
$(error kbuild: $(obj)/Makefile - Usage of O_TARGET := $(O_TARGET) is obsolete in 2.5. Please fix!)
......@@ -36,84 +31,6 @@ ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif
# Figure out what we need to build from the various variables
# ===========================================================================
# When an object is listed to be built compiled-in and modular,
# only build the compiled-in version
obj-m := $(filter-out $(obj-y),$(obj-m))
# Handle objects in subdirs
# ---------------------------------------------------------------------------
# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
# and add the directory to the list of dirs to descend into: $(subdir-y)
# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
# and add the directory to the list of dirs to descend into: $(subdir-m)
__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y += $(__subdir-y)
__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
subdir-m += $(__subdir-m)
obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
obj-m := $(filter-out %/, $(obj-m))
# Subdirectories we need to descend into
subdir-ym := $(sort $(subdir-y) $(subdir-m))
# export.o is never a composite object, since $(export-objs) has a
# fixed meaning (== objects which EXPORT_SYMBOL())
__obj-y = $(filter-out export.o,$(obj-y))
__obj-m = $(filter-out export.o,$(obj-m))
# if $(foo-objs) exists, foo.o is a composite object
multi-used-y := $(sort $(foreach m,$(__obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used-m := $(sort $(foreach m,$(__obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
# Build list of the parts of our composite objects, our composite
# objects depend on those (obviously)
multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
# $(subdir-obj-y) is the list of objects in $(obj-y) which do not live
# in the local directory
subdir-obj-y := $(foreach o,$(obj-y),$(if $(filter-out $(o),$(notdir $(o))),$(o)))
# Replace multi-part objects by their individual parts, look at local dir only
real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(EXTRA_TARGETS)
real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
# Only build module versions for files which are selected to be built
export-objs := $(filter $(export-objs),$(real-objs-y) $(real-objs-m))
host-progs-single := $(foreach m,$(host-progs),$(if $($(m)-objs),,$(m)))
host-progs-multi := $(foreach m,$(host-progs),$(if $($(m)-objs),$(m)))
host-progs-multi-objs := $(foreach m,$(host-progs-multi),$($(m)-objs))
# Add subdir path
EXTRA_TARGETS := $(addprefix $(obj)/,$(EXTRA_TARGETS))
obj-y := $(addprefix $(obj)/,$(obj-y))
obj-m := $(addprefix $(obj)/,$(obj-m))
export-objs := $(addprefix $(obj)/,$(export-objs))
subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
host-progs := $(addprefix $(obj)/,$(host-progs))
host-progs-single := $(addprefix $(obj)/,$(host-progs-single))
host-progs-multi := $(addprefix $(obj)/,$(host-progs-multi))
host-progs-multi-objs := $(addprefix $(obj)/,$(host-progs-multi-objs))
# The temporary file to save gcc -MD generated dependencies must not
# contain a comma
depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
# ===========================================================================
# If a Makefile does not define a L_TARGET, link an object called "built-in.o"
......@@ -279,49 +196,6 @@ $(host-progs-multi): %: $(host-progs-multi-objs) FORCE
targets += $(host-progs-single) $(host-progs-multi-objs) $(host-progs-multi)
# Shipped files
# ===========================================================================
quiet_cmd_shipped = SHIPPED $@
cmd_shipped = cat $< > $@
%:: %_shipped
$(call cmd,shipped)
# Commands useful for building a boot image
# ===========================================================================
#
# Use as following:
#
# target: source(s) FORCE
# $(if_changed,ld/objcopy/gzip)
#
# and add target to EXTRA_TARGETS so that we know we have to
# read in the saved command line
# Linking
# ---------------------------------------------------------------------------
quiet_cmd_ld = LD $@
cmd_ld = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) \
$(filter-out FORCE,$^) -o $@
# Objcopy
# ---------------------------------------------------------------------------
quiet_cmd_objcopy = OBJCOPY $@
cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $< $@
# Gzip
# ---------------------------------------------------------------------------
quiet_cmd_gzip = GZIP $@
cmd_gzip = gzip -f -9 < $< > $@
# ===========================================================================
# Generic stuff
# ===========================================================================
# Descending
# ---------------------------------------------------------------------------
......@@ -347,65 +221,3 @@ cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
endif
# function to only execute the passed command if necessary
if_changed = $(if $(strip $? \
$(filter-out $(cmd_$(1)),$(cmd_$@))\
$(filter-out $(cmd_$@),$(cmd_$(1)))),\
@set -e; \
$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
$(cmd_$(1)); \
echo 'cmd_$@ := $(cmd_$(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)))),\
@set -e; \
$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
$(cmd_$(1)); \
scripts/fixdep $(depfile) $@ '$(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)),$(cmd_$@))\
$(filter-out $(cmd_$@),$(cmd_$(1)))),\
@set -e; \
mkdir -p $(dir $@); \
$(rule_$(1)))
# If quiet is set, only print short version of command
cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
# do_cmd is a shorthand used to support both compressed, verbose
# and silent output in a single line.
# Compared to cmd described avobe, do_cmd does no rely on any variables
# previously assigned a value.
#
# Usage $(call do_cmd,CMD $@,cmd_to_execute bla bla)
# Example:
# $(call do_cmd,CP $@,cp -b $< $@)
# make -s => nothing will be printed
# make KBUILD_VERBOSE=1 => cp -b path/to/src.file path/to/dest.file
# make KBUILD_VERBOSE=0 => CP path/to/dest.file
define do_cmd
@$(if $(filter quiet_,$(quiet)), echo ' $(1)' &&,
$(if $(filter silent_,$(quiet)),,
echo "$(2)" &&)) \
$(2)
endef
# $(call descend,<dir>,<target>)
# Recursively call a sub-make in <dir> with target <target>
descend = $(Q)$(MAKE) -f scripts/Makefile.build obj=$(1) $(2)
scripts/Makefile.lib 0 → 100644
View file @ 675f908d
# ===========================================================================
# kbuild: Generic definitions
# ===========================================================================
# Standard vars
comma := ,
# Figure out what we need to build from the various variables
# ===========================================================================
# When an object is listed to be built compiled-in and modular,
# only build the compiled-in version
obj-m := $(filter-out $(obj-y),$(obj-m))
# Handle objects in subdirs
# ---------------------------------------------------------------------------
# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
# and add the directory to the list of dirs to descend into: $(subdir-y)
# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
# and add the directory to the list of dirs to descend into: $(subdir-m)
__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y += $(__subdir-y)
__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
subdir-m += $(__subdir-m)
obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
obj-m := $(filter-out %/, $(obj-m))
# Subdirectories we need to descend into
subdir-ym := $(sort $(subdir-y) $(subdir-m))
# export.o is never a composite object, since $(export-objs) has a
# fixed meaning (== objects which EXPORT_SYMBOL())
__obj-y = $(filter-out export.o,$(obj-y))
__obj-m = $(filter-out export.o,$(obj-m))
# if $(foo-objs) exists, foo.o is a composite object
multi-used-y := $(sort $(foreach m,$(__obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used-m := $(sort $(foreach m,$(__obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
# Build list of the parts of our composite objects, our composite
# objects depend on those (obviously)
multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
# $(subdir-obj-y) is the list of objects in $(obj-y) which do not live
# in the local directory
subdir-obj-y := $(foreach o,$(obj-y),$(if $(filter-out $(o),$(notdir $(o))),$(o)))
# Replace multi-part objects by their individual parts, look at local dir only
real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(EXTRA_TARGETS)
real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
# Only build module versions for files which are selected to be built
export-objs := $(filter $(export-objs),$(real-objs-y) $(real-objs-m))
host-progs-single := $(foreach m,$(host-progs),$(if $($(m)-objs),,$(m)))
host-progs-multi := $(foreach m,$(host-progs),$(if $($(m)-objs),$(m)))
host-progs-multi-objs := $(foreach m,$(host-progs-multi),$($(m)-objs))
# Add subdir path
EXTRA_TARGETS := $(addprefix $(obj)/,$(EXTRA_TARGETS))
obj-y := $(addprefix $(obj)/,$(obj-y))
obj-m := $(addprefix $(obj)/,$(obj-m))
export-objs := $(addprefix $(obj)/,$(export-objs))
subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
host-progs := $(addprefix $(obj)/,$(host-progs))
host-progs-single := $(addprefix $(obj)/,$(host-progs-single))
host-progs-multi := $(addprefix $(obj)/,$(host-progs-multi))
host-progs-multi-objs := $(addprefix $(obj)/,$(host-progs-multi-objs))
# The temporary file to save gcc -MD generated dependencies must not
# contain a comma
depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
# Shipped files
# ===========================================================================
quiet_cmd_shipped = SHIPPED $@
cmd_shipped = cat $< > $@
%:: %_shipped
$(call cmd,shipped)
# Commands useful for building a boot image
# ===========================================================================
#
# Use as following:
#
# target: source(s) FORCE
# $(if_changed,ld/objcopy/gzip)
#
# and add target to EXTRA_TARGETS so that we know we have to
# read in the saved command line
# Linking
# ---------------------------------------------------------------------------
quiet_cmd_ld = LD $@
cmd_ld = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) \
$(filter-out FORCE,$^) -o $@
# Objcopy
# ---------------------------------------------------------------------------
quiet_cmd_objcopy = OBJCOPY $@
cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $< $@
# Gzip
# ---------------------------------------------------------------------------
quiet_cmd_gzip = GZIP $@
cmd_gzip = gzip -f -9 < $< > $@
# ===========================================================================
# Generic stuff
# ===========================================================================
# function to only execute the passed command if necessary
if_changed = $(if $(strip $? \
$(filter-out $(cmd_$(1)),$(cmd_$@))\
$(filter-out $(cmd_$@),$(cmd_$(1)))),\
@set -e; \
$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
$(cmd_$(1)); \
echo 'cmd_$@ := $(cmd_$(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)))),\
@set -e; \
$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
$(cmd_$(1)); \
scripts/fixdep $(depfile) $@ '$(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)),$(cmd_$@))\
$(filter-out $(cmd_$@),$(cmd_$(1)))),\
@set -e; \
mkdir -p $(dir $@); \
$(rule_$(1)))
# If quiet is set, only print short version of command
cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
# do_cmd is a shorthand used to support both compressed, verbose
# and silent output in a single line.
# Compared to cmd described avobe, do_cmd does no rely on any variables
# previously assigned a value.
#
# Usage $(call do_cmd,CMD $@,cmd_to_execute bla bla)
# Example:
# $(call do_cmd,CP $@,cp -b $< $@)
# make -s => nothing will be printed
# make KBUILD_VERBOSE=1 => cp -b path/to/src.file path/to/dest.file
# make KBUILD_VERBOSE=0 => CP path/to/dest.file
define do_cmd
@$(if $(filter quiet_,$(quiet)), echo ' $(1)' &&,
$(if $(filter silent_,$(quiet)),,
echo "$(2)" &&)) \
$(2)
endef
# $(call descend,<dir>,<target>)
# Recursively call a sub-make in <dir> with target <target>
descend = $(Q)$(MAKE) -f scripts/Makefile.build obj=$(1) $(2)
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