Sascha Hauer
Sascha Hauer
parent
09d1896bd0
commit
361acf4413
156
Makefile
156
Makefile
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@ -1,7 +1,7 @@
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VERSION = 2
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PATCHLEVEL = 6
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SUBLEVEL = 20
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EXTRAVERSION =-rc5
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PATCHLEVEL = 0
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SUBLEVEL = 0
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EXTRAVERSION =-trunk
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NAME = Homicidal Dwarf Hamster
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# *DOCUMENTATION*
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@ -23,7 +23,7 @@ MAKEFLAGS += -rR --no-print-directory
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# their own directory. If in some directory we have a dependency on
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# a file in another dir (which doesn't happen often, but it's often
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# unavoidable when linking the built-in.o targets which finally
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# turn into vmlinux), we will call a sub make in that other dir, and
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# turn into uboot), we will call a sub make in that other dir, and
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# after that we are sure that everything which is in that other dir
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# is now up to date.
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#
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@ -400,7 +400,7 @@ config %config: scripts_basic outputmakefile FORCE
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else
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# ===========================================================================
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# Build targets only - this includes vmlinux, arch specific targets, clean
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# Build targets only - this includes uboot, arch specific targets, clean
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# targets and others. In general all targets except *config targets.
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# Additional helpers built in scripts/
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@ -410,7 +410,7 @@ PHONY += scripts
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scripts: scripts_basic include/config/auto.conf
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$(Q)$(MAKE) $(build)=$(@)
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# Objects we will link into vmlinux / subdirs we need to visit
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# Objects we will link into uboot / subdirs we need to visit
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common-y := common/ drivers/ lib_generic/ net/ fs/
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ifeq ($(dot-config),1)
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@ -439,8 +439,8 @@ endif # $(dot-config)
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# The all: target is the default when no target is given on the
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# command line.
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# This allow a user to issue only 'make' to build a kernel including modules
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# Defaults vmlinux but it is usually overridden in the arch makefile
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all: vmlinux
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# Defaults uboot but it is usually overridden in the arch makefile
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all: uboot
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ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
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CFLAGS += -Os
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@ -478,7 +478,7 @@ CFLAGS += $(call cc-option,-Wno-pointer-sign,)
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# set in the environment
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# Also any assignments in arch/$(ARCH)/Makefile take precedence over
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# this default value
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export KBUILD_IMAGE ?= vmlinux
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export KBUILD_IMAGE ?= uboot
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#
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# INSTALL_PATH specifies where to place the updated kernel and system map
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@ -511,58 +511,58 @@ mod_strip_cmd = true
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endif # INSTALL_MOD_STRIP
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export mod_strip_cmd
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vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(common-y)))
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uboot-dirs := $(patsubst %/,%,$(filter %/, $(common-y)))
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vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
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uboot-alldirs := $(sort $(uboot-dirs) $(patsubst %/,%,$(filter %/, \
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$(common-n) $(common-) \
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$(core-n) $(core-) $(drivers-n) $(drivers-) \
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$(net-n) $(net-) $(libs-n) $(libs-))))
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common-y := $(patsubst %/, %/built-in.o, $(common-y))
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# Build vmlinux
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# Build uboot
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# ---------------------------------------------------------------------------
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# vmlinux is built from the objects selected by $(vmlinux-init) and
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# $(vmlinux-main). Most are built-in.o files from top-level directories
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# uboot is built from the objects selected by $(uboot-init) and
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# $(uboot-main). Most are built-in.o files from top-level directories
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# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
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# Ordering when linking is important, and $(vmlinux-init) must be first.
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# Ordering when linking is important, and $(uboot-init) must be first.
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#
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# vmlinux
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# uboot
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# ^
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# |
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# +-< $(vmlinux-init)
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# +-< $(uboot-init)
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# | +--< init/version.o + more
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# |
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# +--< $(vmlinux-main)
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# +--< $(uboot-main)
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# | +--< driver/built-in.o mm/built-in.o + more
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# |
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# +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
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#
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# vmlinux version (uname -v) cannot be updated during normal
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# uboot version (uname -v) cannot be updated during normal
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# descending-into-subdirs phase since we do not yet know if we need to
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# update vmlinux.
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# Therefore this step is delayed until just before final link of vmlinux -
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# update uboot.
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# Therefore this step is delayed until just before final link of uboot -
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# except in the kallsyms case where it is done just before adding the
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# symbols to the kernel.
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#
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# System.map is generated to document addresses of all kernel symbols
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vmlinux-common := $(common-y)
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vmlinux-all := $(vmlinux-common)
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vmlinux-lds := $(BOARD)/u-boot.lds
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export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
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uboot-common := $(common-y)
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uboot-all := $(uboot-common)
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uboot-lds := $(BOARD)/u-boot.lds
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export KBUILD_VMLINUX_OBJS := $(uboot-all)
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# Rule to link vmlinux - also used during CONFIG_KALLSYMS
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# Rule to link uboot - also used during CONFIG_KALLSYMS
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# May be overridden by arch/$(ARCH)/Makefile
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quiet_cmd_vmlinux__ ?= LD $@
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cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
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-T $(vmlinux-lds) $(vmlinux-head) \
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--start-group $(vmlinux-common) --end-group \
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$(filter-out $(vmlinux-lds) $(vmlinux-common) FORCE ,$^)
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quiet_cmd_uboot__ ?= LD $@
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cmd_uboot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_uboot) -o $@ \
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-T $(uboot-lds) $(uboot-head) \
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--start-group $(uboot-common) --end-group \
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$(filter-out $(uboot-lds) $(uboot-common) FORCE ,$^)
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# Generate new vmlinux version
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quiet_cmd_vmlinux_version = GEN .version
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cmd_vmlinux_version = set -e; \
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# Generate new uboot version
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quiet_cmd_uboot_version = GEN .version
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cmd_uboot_version = set -e; \
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if [ ! -r .version ]; then \
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rm -f .version; \
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echo 1 >.version; \
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@ -576,21 +576,21 @@ quiet_cmd_vmlinux_version = GEN .version
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quiet_cmd_sysmap = SYSMAP
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cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
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# Link of vmlinux
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# Link of uboot
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# If CONFIG_KALLSYMS is set .version is already updated
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# Generate System.map and verify that the content is consistent
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# Use + in front of the vmlinux_version rule to silent warning with make -j2
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# Use + in front of the uboot_version rule to silent warning with make -j2
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# First command is ':' to allow us to use + in front of the rule
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define rule_vmlinux__
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define rule_uboot__
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:
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$(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
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$(if $(CONFIG_KALLSYMS),,+$(call cmd,uboot_version))
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$(call cmd,vmlinux__)
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$(call cmd,uboot__)
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$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
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$(Q)echo 'cmd_$@ := $(cmd_uboot__)' > $(@D)/.$(@F).cmd
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$(OBJCOPY) -O binary vmlinux vmlinux.bin
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$(OBJDUMP) -d vmlinux > vmlinux.S
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$(OBJCOPY) -O binary uboot uboot.bin
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$(OBJDUMP) -d uboot > uboot.S
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$(Q)$(if $($(quiet)cmd_sysmap), \
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echo ' $($(quiet)cmd_sysmap) System.map' &&) \
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@ -604,20 +604,20 @@ endef
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ifdef CONFIG_KALLSYMS
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# Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
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# Generate section listing all symbols and add it into uboot $(kallsyms.o)
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# It's a three stage process:
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# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
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# o .tmp_uboot1 has all symbols and sections, but __kallsyms is
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# empty
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# Running kallsyms on that gives us .tmp_kallsyms1.o with
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# the right size - vmlinux version (uname -v) is updated during this step
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# o .tmp_vmlinux2 now has a __kallsyms section of the right size,
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# the right size - uboot version (uname -v) is updated during this step
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# o .tmp_uboot2 now has a __kallsyms section of the right size,
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# but due to the added section, some addresses have shifted.
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# From here, we generate a correct .tmp_kallsyms2.o
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# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
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# o Verify that the System.map from vmlinux matches the map from
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# .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
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# o The correct .tmp_kallsyms2.o is linked into the final uboot.
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# o Verify that the System.map from uboot matches the map from
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# .tmp_uboot2, just in case we did not generate kallsyms correctly.
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# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
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# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
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# .tmp_uboot3 and .tmp_kallsyms3.o. This is only meant as a
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# temporary bypass to allow the kernel to be built while the
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# maintainers work out what went wrong with kallsyms.
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@ -632,22 +632,22 @@ kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
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define verify_kallsyms
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$(Q)$(if $($(quiet)cmd_sysmap), \
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echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
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$(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
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$(cmd_sysmap) .tmp_uboot$(last_kallsyms) .tmp_System.map
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$(Q)cmp -s System.map .tmp_System.map || \
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(echo Inconsistent kallsyms data; \
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echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
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rm .tmp_kallsyms* ; /bin/false )
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endef
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# Update vmlinux version before link
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# Update uboot version before link
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# Use + in front of this rule to silent warning about make -j1
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# First command is ':' to allow us to use + in front of this rule
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cmd_ksym_ld = $(cmd_vmlinux__)
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cmd_ksym_ld = $(cmd_uboot__)
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define rule_ksym_ld
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:
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+$(call cmd,vmlinux_version)
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$(call cmd,vmlinux__)
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$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
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+$(call cmd,uboot_version)
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$(call cmd,uboot__)
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$(Q)echo 'cmd_$@ := $(cmd_uboot__)' > $(@D)/.$(@F).cmd
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endef
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# Generate .S file with all kernel symbols
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@ -658,18 +658,18 @@ quiet_cmd_kallsyms = KSYM $@
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.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
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$(call if_changed_dep,as_o_S)
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.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
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.tmp_kallsyms%.S: .tmp_uboot% $(KALLSYMS)
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$(call cmd,kallsyms)
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# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
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.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
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# .tmp_uboot1 must be complete except kallsyms, so update uboot version
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.tmp_uboot1: $(uboot-lds) $(uboot-all) FORCE
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$(call if_changed_rule,ksym_ld)
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.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
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$(call if_changed,vmlinux__)
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.tmp_uboot2: $(uboot-lds) $(uboot-all) .tmp_kallsyms1.o FORCE
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$(call if_changed,uboot__)
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.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
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$(call if_changed,vmlinux__)
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.tmp_uboot3: $(uboot-lds) $(uboot-all) .tmp_kallsyms2.o FORCE
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$(call if_changed,uboot__)
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# Needs to visit scripts/ before $(KALLSYMS) can be used.
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$(KALLSYMS): scripts ;
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@ -677,7 +677,7 @@ $(KALLSYMS): scripts ;
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# Generate some data for debugging strange kallsyms problems
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debug_kallsyms: .tmp_map$(last_kallsyms)
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.tmp_map%: .tmp_vmlinux% FORCE
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.tmp_map%: .tmp_uboot% FORCE
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($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
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.tmp_map3: .tmp_map2
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@ -686,26 +686,26 @@ debug_kallsyms: .tmp_map$(last_kallsyms)
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endif # ifdef CONFIG_KALLSYMS
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# vmlinux image - including updated kernel symbols
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vmlinux: $(vmlinux-lds) $(vmlinux-head) $(vmlinux-common) $(kallsyms.o) FORCE
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# uboot image - including updated kernel symbols
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uboot: $(uboot-lds) $(uboot-head) $(uboot-common) $(kallsyms.o) FORCE
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ifdef CONFIG_HEADERS_CHECK
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$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
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endif
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$(call if_changed_rule,vmlinux__)
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$(call if_changed_rule,uboot__)
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$(Q)rm -f .old_version
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# The actual objects are generated when descending,
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# make sure no implicit rule kicks in
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$(sort $(vmlinux-head) $(vmlinux-common) ) $(vmlinux-lds): $(vmlinux-dirs) ;
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$(sort $(uboot-head) $(uboot-common) ) $(uboot-lds): $(uboot-dirs) ;
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# Handle descending into subdirectories listed in $(vmlinux-dirs)
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# Handle descending into subdirectories listed in $(uboot-dirs)
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# Preset locale variables to speed up the build process. Limit locale
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# tweaks to this spot to avoid wrong language settings when running
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# make menuconfig etc.
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# Error messages still appears in the original language
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PHONY += $(vmlinux-dirs)
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$(vmlinux-dirs): prepare scripts
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PHONY += $(uboot-dirs)
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$(uboot-dirs): prepare scripts
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$(Q)$(MAKE) $(build)=$@
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# Build the kernel release string
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@ -818,10 +818,10 @@ prepare0: archprepare FORCE
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# All the preparing..
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prepare prepare-all: prepare0
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# Leave this as default for preprocessing vmlinux.lds.S, which is now
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# Leave this as default for preprocessing uboot.lds.S, which is now
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# done in arch/$(ARCH)/kernel/Makefile
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export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
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export CPPFLAGS_uboot.lds += -P -C -U$(ARCH)
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# FIXME: The asm symlink changes when $(ARCH) changes. That's
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# hard to detect, but I suppose "make mrproper" is a good idea
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@ -878,9 +878,9 @@ depend dep:
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# Directories & files removed with 'make clean'
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CLEAN_DIRS += $(MODVERDIR)
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CLEAN_FILES += vmlinux System.map \
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.tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map \
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vmlinux.bin vmlinux.S
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CLEAN_FILES += uboot System.map \
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.tmp_kallsyms* .tmp_version .tmp_uboot* .tmp_System.map \
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uboot.bin uboot.S
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# Directories & files removed with 'make mrproper'
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MRPROPER_DIRS += include/config include2 usr/include
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@ -893,7 +893,7 @@ MRPROPER_FILES += .config .config.old include/asm .version .old_version \
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#
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clean: rm-dirs := $(CLEAN_DIRS)
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clean: rm-files := $(CLEAN_FILES)
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clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
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clean-dirs := $(addprefix _clean_,$(srctree) $(uboot-alldirs))
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PHONY += $(clean-dirs) clean archclean
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$(clean-dirs):
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@ -964,7 +964,7 @@ help:
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@echo ''
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@echo 'Other generic targets:'
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@echo ' all - Build all targets marked with [*]'
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@echo '* vmlinux - Build the bare kernel'
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@echo '* uboot - Build the bare kernel'
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@echo '* modules - Build all modules'
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@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
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@echo ' dir/ - Build all files in dir and below'
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