422 lines
12 KiB
Makefile
422 lines
12 KiB
Makefile
#
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# This file contains rules which are shared between multiple Makefiles.
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#
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include $(ROOTDIR)/.config
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include $(ROOTDIR)/BaseVar.mk
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#
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# False targets.
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#
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.PHONY: dummy
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#
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# Special variables which should not be exported
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#
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unexport EXTRA_AFLAGS
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unexport EXTRA_CFLAGS
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unexport EXTRA_LDFLAGS
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unexport EXTRA_ARFLAGS
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unexport EXTRA_CCFLAGS
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unexport SUBDIRS
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unexport SUB_DIRS
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unexport ALL_SUB_DIRS
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unexport MOD_SUB_DIRS
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unexport O_TARGET
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unexport ALL_MOBJS
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unexport obj-y
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unexport obj-m
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unexport obj-n
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unexport obj-
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unexport lib-y
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unexport lib-
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unexport export-objs
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unexport subdir-y
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unexport subdir-m
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unexport subdir-n
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unexport subdir-
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ifdef CONFIG_TBS_GDB_DEBUG
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CFLAGS += -g -ggdb
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else
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CFLAGS += -Os
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endif
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CFLAGS += -Wall
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#CFLAGS += -Werror
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CFLAGS += -pipe
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comma := ,
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EXTRA_CFLAGS_nostdinc := $(EXTRA_CFLAGS) $(kbuild_2_4_nostdinc)
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#
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# Get things started.
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#
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#ifneq ($(findstring $(SRCDIR),$(CURDIR)),)
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#$(error Please build code from $(BUILDDIR) instead of $(SRCDIR), you should build it use the path $(subst $(SRCDIR),$(BUILDDIR),$(CURDIR))))
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#endif
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first_rule: sub_dirs
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# echo $(subdir-$(CONFIG_LLP_KERNEL))
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$(MAKE) all_targets
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both-m := $(filter $(mod-subdirs), $(subdir-y))
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SUB_DIRS := $(subdir-y)
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MOD_SUB_DIRS := $(sort $(subdir-m) $(both-m))
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ALL_SUB_DIRS := $(sort $(subdir-y) $(subdir-m) $(subdir-n) $(subdir-))
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#
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# Common rules
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#
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%.s: %.c
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$(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) -S $< -o $@
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%.i: %.c
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$(CPP) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) $< > $@
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%.o: %.c
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$(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) -c -o $@ $<
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@ ( \
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echo 'ifeq ($(strip $(subst $(comma),:,$(CFLAGS) $(EXTRA_CFLAGS_nostdinc) $(CFLAGS_$@))),$$(strip $$(subst $$(comma),:,$$(CFLAGS) $$(EXTRA_CFLAGS_nostdinc) $$(CFLAGS_$@))))' ; \
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echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
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echo 'endif' \
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) > $(dir $@)/.$(notdir $@).flags
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# We don't need this rule and it can stop the standard rules below from working
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#%.o: %.s
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# $(AS) $(AFLAGS) $(EXTRA_CFLAGS) -o $@ $<
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# Old makefiles define their own rules for compiling .S files,
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# but these standard rules are available for any Makefile that
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# wants to use them. Our plan is to incrementally convert all
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# the Makefiles to these standard rules. -- rmk, mec
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ifdef USE_STANDARD_AS_RULE
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%.s: %.S
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$(CPP) $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$@) $< > $@
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%.o: %.S
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$(CC) $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$@) -c -o $@ $<
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endif
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#%.lst: %.c
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# $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) $(CFLAGS_$@) -g -c -o $*.o $<
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# $(TOPDIR)/scripts/makelst $* $(TOPDIR) $(OBJDUMP)
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#
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#
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#
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all_targets: $(O_TARGET) $(L_TARGET) $(E_TARGET) $(SO_TARGET)
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#
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# Rule to compile a set of .o files into one .o file
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#
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ifdef O_TARGET
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$(O_TARGET): $(obj-y) $(lib-y)
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$(Q)rm -f $@
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ifneq "$(strip $(obj-y))" ""
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$(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) -r -o $@ $(filter $(obj-y), $^) $(filter $(lib-y), $^)
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else
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$(AR) rcs $@
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endif
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@ ( \
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echo 'ifeq ($(strip $(subst $(comma),:,$(LDFLAGS) $(EXTRA_LDFLAGS) $(obj-y))),$$(strip $$(subst $$(comma),:,$$(LDFLAGS) $$(EXTRA_LDFLAGS) $$(obj-y))))' ; \
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echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
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echo 'endif' \
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) > $(dir $@)/.$(notdir $@).flags
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endif # O_TARGET
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#
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# Rule to compile a set of .o files into one .a file
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#
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ifdef L_TARGET
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$(L_TARGET): $(obj-y)
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$(Q)rm -f $@
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$(AR) $(EXTRA_ARFLAGS) rcs $@ $(obj-y)
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@ ( \
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echo 'ifeq ($(strip $(subst $(comma),:,$(EXTRA_ARFLAGS) $(obj-y))),$$(strip $$(subst $$(comma),:,$$(EXTRA_ARFLAGS) $$(obj-y))))' ; \
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echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
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echo 'endif' \
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) > $(dir $@)/.$(notdir $@).flags
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endif
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#
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# Rule to compile a set of .o files into one execute file
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#
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ifdef E_TARGET
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$(E_TARGET): $(obj-y) $(lib-y)
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$(Q)rm -f $@
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# echo "obj is"$^
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$(CC) -o $@ $(filter $(obj-y), $^) $(filter $(lib-y), $^) $(LDFLAGS) $(EXTRA_LDFLAGS)
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# $(CC) $(CCFLAGS) $(EXTRA_CCFLAGS) -o $@ $(filter $(obj-y), $^)
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endif
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#
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# Rule to compile a set of .o files into one so file
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#
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ifdef SO_TARGET
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$(SO_TARGET): $(obj-y)
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$(Q)rm -f $@
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# echo "obj is"$^
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# $(CC) -shared $(EXTRA_LDFLAGS) -o $@ $(filter $(obj-y), $^)
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$(CC) -shared -o $@ $(filter $(obj-y), $^) $(EXTRA_LDFLAGS)
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endif
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#
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# This make dependencies quickly
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#
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#fastdep: dummy
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# $(TOPDIR)/scripts/mkdep $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -- $(wildcard *.[chS]) > .depend
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#ifdef ALL_SUB_DIRS
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# $(MAKE) $(patsubst %,_sfdep_%,$(ALL_SUB_DIRS)) _FASTDEP_ALL_SUB_DIRS="$(ALL_SUB_DIRS)"
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#endif
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#
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#ifdef _FASTDEP_ALL_SUB_DIRS
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#$(patsubst %,_sfdep_%,$(_FASTDEP_ALL_SUB_DIRS)):
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# $(MAKE) -C $(patsubst _sfdep_%,%,$@) fastdep
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#endif
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#
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# A rule to make subdirectories
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#
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#subdir-list = $(sort $(patsubst %,_subdir_%,$(SUB_DIRS)))
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subdir-list = $(patsubst %,_subdir_%,$(SUB_DIRS))
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sub_dirs: dummy $(subdir-list)
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ifdef SUB_DIRS
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$(subdir-list) : dummy
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$(MAKE) -C $(patsubst _subdir_%,%,$@)
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endif
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#
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# A rule to make modules
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#
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#ALL_MOBJS = $(filter-out $(obj-y), $(obj-m))
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#ifneq "$(strip $(ALL_MOBJS))" ""
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#MOD_DESTDIR := $(shell $(CONFIG_SHELL) $(TOPDIR)/scripts/pathdown.sh)
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#endif
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#
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#unexport MOD_DIRS
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#MOD_DIRS := $(MOD_SUB_DIRS) $(MOD_IN_SUB_DIRS)
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#ifneq "$(strip $(MOD_DIRS))" ""
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#.PHONY: $(patsubst %,_modsubdir_%,$(MOD_DIRS))
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#$(patsubst %,_modsubdir_%,$(MOD_DIRS)) : dummy
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# $(MAKE) -C $(patsubst _modsubdir_%,%,$@) modules
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#
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#.PHONY: $(patsubst %,_modinst_%,$(MOD_DIRS))
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#$(patsubst %,_modinst_%,$(MOD_DIRS)) : dummy
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# $(MAKE) -C $(patsubst _modinst_%,%,$@) modules_install
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#endif
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#
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#.PHONY: modules
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#modules: $(ALL_MOBJS) dummy \
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# $(patsubst %,_modsubdir_%,$(MOD_DIRS))
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#
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#.PHONY: _modinst__
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#_modinst__: dummy
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#ifneq "$(strip $(ALL_MOBJS))" ""
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# mkdir -p $(MODLIB)/kernel/$(MOD_DESTDIR)
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# cp $(sort $(ALL_MOBJS)) $(MODLIB)/kernel/$(MOD_DESTDIR)
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#endif
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#
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#.PHONY: modules_install
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#modules_install: _modinst__ \
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# $(patsubst %,_modinst_%,$(MOD_DIRS))
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#
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#
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# A rule to do nothing
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#
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dummy:
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#
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# This is useful for testing
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#
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script:
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$(SCRIPT)
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##
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## This sets version suffixes on exported symbols
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## Separate the object into "normal" objects and "exporting" objects
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## Exporting objects are: all objects that define symbol tables
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##
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#ifdef CONFIG_MODULES
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#
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#multi-used := $(filter $(list-multi), $(obj-y) $(obj-m))
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#multi-objs := $(foreach m, $(multi-used), $($(basename $(m))-objs))
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#active-objs := $(sort $(multi-objs) $(obj-y) $(obj-m))
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#
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#ifdef CONFIG_MODVERSIONS
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#ifneq "$(strip $(export-objs))" ""
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#
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#MODINCL = $(TOPDIR)/include/linux/modules
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#
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## The -w option (enable warnings) for genksyms will return here in 2.1
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## So where has it gone?
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##
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## Added the SMP separator to stop module accidents between uniprocessor
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## and SMP Intel boxes - AC - from bits by Michael Chastain
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##
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#
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#ifdef CONFIG_SMP
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# genksyms_smp_prefix := -p smp_
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#else
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# genksyms_smp_prefix :=
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#endif
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#
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#$(MODINCL)/%.ver: %.c
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# @if [ ! -r $(MODINCL)/$*.stamp -o $(MODINCL)/$*.stamp -ot $< ]; then \
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# echo '$(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -E -D__GENKSYMS__ $<'; \
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# echo '| $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp'; \
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# $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -E -D__GENKSYMS__ $< \
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# | $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp; \
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# if [ -r $@ ] && cmp -s $@ $@.tmp; then echo $@ is unchanged; rm -f $@.tmp; \
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# else echo mv $@.tmp $@; mv -f $@.tmp $@; fi; \
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# fi; touch $(MODINCL)/$*.stamp
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#
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#$(addprefix $(MODINCL)/,$(export-objs:.o=.ver)): $(TOPDIR)/include/linux/autoconf.h
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#
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## updates .ver files but not modversions.h
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#fastdep: $(addprefix $(MODINCL)/,$(export-objs:.o=.ver))
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#
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## updates .ver files and modversions.h like before (is this needed?)
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#dep: fastdep update-modverfile
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#
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#endif # export-objs
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#
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## update modversions.h, but only if it would change
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#update-modverfile:
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# @(echo "#ifndef _LINUX_MODVERSIONS_H";\
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# echo "#define _LINUX_MODVERSIONS_H"; \
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# echo "#include <linux/modsetver.h>"; \
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# cd $(TOPDIR)/include/linux/modules; \
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# for f in *.ver; do \
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# if [ -f $$f ]; then echo "#include <linux/modules/$${f}>"; fi; \
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# done; \
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# echo "#endif"; \
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# ) > $(TOPDIR)/include/linux/modversions.h.tmp
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# @if [ -r $(TOPDIR)/include/linux/modversions.h ] && cmp -s $(TOPDIR)/include/linux/modversions.h $(TOPDIR)/include/linux/modversions.h.tmp; then \
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# echo $(TOPDIR)/include/linux/modversions.h was not updated; \
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# rm -f $(TOPDIR)/include/linux/modversions.h.tmp; \
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# else \
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# echo $(TOPDIR)/include/linux/modversions.h was updated; \
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# mv -f $(TOPDIR)/include/linux/modversions.h.tmp $(TOPDIR)/include/linux/modversions.h; \
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# fi
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#
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#$(active-objs): $(TOPDIR)/include/linux/modversions.h
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#
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#else
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#
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#$(TOPDIR)/include/linux/modversions.h: $(TOPDIR)/include/linux/modsetver.h
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# @echo "#include <linux/modsetver.h>" > $@
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#
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#endif # CONFIG_MODVERSIONS
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#
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#ifneq "$(strip $(export-objs))" ""
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#$(export-objs): $(export-objs:.o=.c) $(TOPDIR)/include/linux/modversions.h
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# $(CC) $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) $(CFLAGS_$@) -DEXPORT_SYMTAB -o $@ -c $(@:.o=.c)
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# @ ( \
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# echo 'ifeq ($(strip $(subst $(comma),:,$(CFLAGS) $(EXTRA_CFLAGS_nostdinc) $(CFLAGS_$@) -DEXPORT_SYMTAB)),$$(strip $$(subst $$(comma),:,$$(CFLAGS) $$(EXTRA_CFLAGS_nostdinc) $$(CFLAGS_$@) -DEXPORT_SYMTAB)))' ; \
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# echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
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# echo 'endif' \
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# ) > $(dir $@)/.$(notdir $@).flags
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#endif
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#
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#endif # CONFIG_MODULES
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#
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# include dependency files if they exist
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#
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ifneq ($(wildcard .depend),)
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include .depend
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endif
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ifneq ($(wildcard $(TOPDIR)/.hdepend),)
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include $(TOPDIR)/.hdepend
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endif
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#
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# Find files whose flags have changed and force recompilation.
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# For safety, this works in the converse direction:
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# every file is forced, except those whose flags are positively up-to-date.
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#
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FILES_FLAGS_UP_TO_DATE :=
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# For use in expunging commas from flags, which mung our checking.
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comma = ,
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FILES_FLAGS_EXIST := $(wildcard .*.flags)
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ifneq ($(FILES_FLAGS_EXIST),)
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include $(FILES_FLAGS_EXIST)
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endif
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FILES_FLAGS_CHANGED := $(strip \
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$(filter-out $(FILES_FLAGS_UP_TO_DATE), \
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$(O_TARGET) $(L_TARGET) $(active-objs) \
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))
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# A kludge: .S files don't get flag dependencies (yet),
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# because that will involve changing a lot of Makefiles. Also
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# suppress object files explicitly listed in $(IGNORE_FLAGS_OBJS).
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# This allows handling of assembly files that get translated into
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# multiple object files (see arch/ia64/lib/idiv.S, for example).
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FILES_FLAGS_CHANGED := $(strip \
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$(filter-out $(patsubst %.S, %.o, $(wildcard *.S) $(IGNORE_FLAGS_OBJS)), \
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$(FILES_FLAGS_CHANGED)))
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ifneq ($(FILES_FLAGS_CHANGED),)
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$(FILES_FLAGS_CHANGED): dummy
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endif
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######################################################################
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.PHONY = $(clean-subdirs) clean
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ifneq ($(subdir-y),)
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clean-dirs := $(addprefix _clean_,$(patsubst _subdir_%,%,$(subdir-y)))
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$(clean-dirs):
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$(MAKE) -C $(patsubst _clean_%,%,$@) clean
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endif
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clean-subdirs := $(clean-dirs) dummy
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clean: NOTMKDEP=1
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clean: $(clean-subdirs)
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$(Q)rm -f $(obj-y:.o=.d) $(obj-y)
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$(Q)rm -f $(obj-m:.o=.d) $(obj-m)
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$(Q)rm -f $(E_TARGET) $(SO_TARGET) $(L_TARGET);
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$(Q)rm -rf $(clean-files)
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ifneq ($(subdir-y),)
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install-dirs := $(addprefix _install_,$(patsubst _subdir_%,%,$(subdir-y)))
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$(install-dirs):
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$(MAKE) -C $(patsubst _install_%,%,$@) install
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endif
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installme:: dummy
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install-subdirs := $(install-dirs) installme dummy
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install: $(install-subdirs)
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ifneq ($(subdir-y),)
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distclean-dirs := $(addprefix _distclean_,$(patsubst _subdir_%,%,$(subdir-y)))
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$(distclean-dirs):
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$(MAKE) -k -C $(patsubst _distclean_%,%,$@) distclean
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endif
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distcleanme:: dummy
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distclean-subdirs := $(distclean-dirs) distcleanme dummy
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distclean: $(distclean-subdirs)
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###Depend rule
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%.d: %.c
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$(Q)$(CC) $(INCLUDE) -M $(CFLAGS) $(EXTRA_CFLAGS) $< > $@.$$$$; \
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sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
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rm -f $@.$$$$
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ifneq ($(MAKECMDGOALS),clean)
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ifneq ($(strip $(obj-y)),)
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sinclude $(obj-y:.o=.d)
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endif
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ifneq ($(strip $(obj-m)),)
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sinclude $(obj-m:.o=.d)
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endif
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endif
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ifneq ($(findstring $(BUILDDIR),$(PWD)),)
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refresh_dirs:
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$(Q)sh ${ROOTDIR}/tools/mksymlink $(subst $(BUILDDIR),$(SRCDIR),$(PWD)) $(PWD)
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endif
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