diff options
Diffstat (limited to 'scripts/Makefile.lib')
| -rw-r--r-- | scripts/Makefile.lib | 178 |
1 files changed, 158 insertions, 20 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 4c72c118947..260bf8acfce 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -27,7 +27,7 @@ lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) # --------------------------------------------------------------------------- # 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) +# 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) # Determine modorder. @@ -46,7 +46,7 @@ obj-m := $(filter-out %/, $(obj-m)) subdir-ym := $(sort $(subdir-y) $(subdir-m)) -# if $(foo-objs) exists, foo.o is a composite object +# 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)))) multi-used := $(multi-used-y) $(multi-used-m) @@ -63,7 +63,7 @@ multi-objs := $(multi-objs-y) $(multi-objs-m) subdir-obj-y := $(filter %/built-in.o, $(obj-y)) # $(obj-dirs) is a list of directories that contain object files -obj-dirs := $(dir $(multi-objs) $(subdir-obj-y)) +obj-dirs := $(dir $(multi-objs) $(obj-y)) # 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-y) @@ -91,11 +91,11 @@ obj-dirs := $(addprefix $(obj)/,$(obj-dirs)) # 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 +# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will # end up in (or would, if it gets compiled in) -# Note: It's possible that one object gets potentially linked into more -# than one module. In that case KBUILD_MODNAME will be set to foo_bar, -# where foo and bar are the name of the modules. +# Note: Files that end up in two or more modules are compiled without the +# KBUILD_MODNAME definition. The reason is that any made-up name would +# differ in different configs. name-fix = $(subst $(comma),_,$(subst -,_,$1)) basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))" modname_flags = $(if $(filter 1,$(words $(modname))),\ @@ -119,13 +119,6 @@ _c_flags += $(if $(patsubst n%,, \ $(CFLAGS_GCOV)) endif -ifdef CONFIG_SYMBOL_PREFIX -_sym_flags = -DSYMBOL_PREFIX=$(patsubst "%",%,$(CONFIG_SYMBOL_PREFIX)) -_cpp_flags += $(_sym_flags) -_a_flags += $(_sym_flags) -endif - - # If building the kernel in a separate objtree expand all occurrences # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). @@ -156,22 +149,70 @@ cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ ld_flags = $(LDFLAGS) $(ldflags-y) +dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ + -I$(srctree)/arch/$(SRCARCH)/boot/dts \ + -I$(srctree)/arch/$(SRCARCH)/boot/dts/include \ + -I$(srctree)/drivers/of/testcase-data \ + -undef -D__DTS__ + # Finds the multi-part object the current object will be linked into modname-multi = $(sort $(foreach m,$(multi-used),\ $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) +ifdef REGENERATE_PARSERS + +# GPERF +# --------------------------------------------------------------------------- +quiet_cmd_gperf = GPERF $@ + cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $< + +.PRECIOUS: $(src)/%.hash.c_shipped +$(src)/%.hash.c_shipped: $(src)/%.gperf + $(call cmd,gperf) + +# LEX +# --------------------------------------------------------------------------- +LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy) + +quiet_cmd_flex = LEX $@ + cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $< + +.PRECIOUS: $(src)/%.lex.c_shipped +$(src)/%.lex.c_shipped: $(src)/%.l + $(call cmd,flex) + +# YACC +# --------------------------------------------------------------------------- +YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy) + +quiet_cmd_bison = YACC $@ + cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $< + +.PRECIOUS: $(src)/%.tab.c_shipped +$(src)/%.tab.c_shipped: $(src)/%.y + $(call cmd,bison) + +quiet_cmd_bison_h = YACC $@ + cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $< + +.PRECIOUS: $(src)/%.tab.h_shipped +$(src)/%.tab.h_shipped: $(src)/%.y + $(call cmd,bison_h) + +endif + # Shipped files # =========================================================================== quiet_cmd_shipped = SHIPPED $@ cmd_shipped = cat $< > $@ -$(obj)/%:: $(src)/%_shipped +$(obj)/%: $(src)/%_shipped $(call cmd,shipped) # Commands useful for building a boot image # =========================================================================== -# +# # Use as following: # # target: source(s) FORCE @@ -185,7 +226,7 @@ $(obj)/%:: $(src)/%_shipped quiet_cmd_ld = LD $@ cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \ - $(filter-out FORCE,$^) -o $@ + $(filter-out FORCE,$^) -o $@ # Objcopy # --------------------------------------------------------------------------- @@ -197,9 +238,53 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ # --------------------------------------------------------------------------- quiet_cmd_gzip = GZIP $@ -cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -f -9 > $@) || \ +cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ (rm -f $@ ; false) +# DTC +# --------------------------------------------------------------------------- + +# Generate an assembly file to wrap the output of the device tree compiler +quiet_cmd_dt_S_dtb= DTB $@ +cmd_dt_S_dtb= \ +( \ + echo '\#include <asm-generic/vmlinux.lds.h>'; \ + echo '.section .dtb.init.rodata,"a"'; \ + echo '.balign STRUCT_ALIGNMENT'; \ + echo '.global __dtb_$(*F)_begin'; \ + echo '__dtb_$(*F)_begin:'; \ + echo '.incbin "$<" '; \ + echo '__dtb_$(*F)_end:'; \ + echo '.global __dtb_$(*F)_end'; \ + echo '.balign STRUCT_ALIGNMENT'; \ +) > $@ + +$(obj)/%.dtb.S: $(obj)/%.dtb + $(call cmd,dt_S_dtb) + +quiet_cmd_dtc = DTC $@ +cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ + $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 \ + -i $(dir $<) $(DTC_FLAGS) \ + -d $(depfile).dtc.tmp $(dtc-tmp) ; \ + cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) + +$(obj)/%.dtb: $(src)/%.dts FORCE + $(call if_changed_dep,dtc) + +dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) + +# Helper targets for Installing DTBs into the boot directory +quiet_cmd_dtb_install = INSTALL $< + cmd_dtb_install = cp $< $(2) + +_dtbinst_pre_: + $(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi + $(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi + $(Q)mkdir -p $(INSTALL_DTBS_PATH) + +%.dtb_dtbinst_: $(obj)/%.dtb _dtbinst_pre_ + $(call cmd,dtb_install,$(INSTALL_DTBS_PATH)) # Bzip2 # --------------------------------------------------------------------------- @@ -239,6 +324,59 @@ cmd_lzo = (cat $(filter-out FORCE,$^) | \ lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ (rm -f $@ ; false) -# misc stuff +quiet_cmd_lz4 = LZ4 $@ +cmd_lz4 = (cat $(filter-out FORCE,$^) | \ + lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ + (rm -f $@ ; false) + +# U-Boot mkimage +# --------------------------------------------------------------------------- + +MKIMAGE := $(srctree)/scripts/mkuboot.sh + +# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces +# the number of overrides in arch makefiles +UIMAGE_ARCH ?= $(SRCARCH) +UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) +UIMAGE_OPTS-y ?= +UIMAGE_TYPE ?= kernel +UIMAGE_LOADADDR ?= arch_must_set_this +UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) +UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' +UIMAGE_IN ?= $< +UIMAGE_OUT ?= $@ + +quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT) + cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ + -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ + -T $(UIMAGE_TYPE) \ + -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ + -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT) + +# XZ # --------------------------------------------------------------------------- -quote:=" +# Use xzkern to compress the kernel image and xzmisc to compress other things. +# +# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage +# of the kernel decompressor. A BCJ filter is used if it is available for +# the target architecture. xzkern also appends uncompressed size of the data +# using size_append. The .xz format has the size information available at +# the end of the file too, but it's in more complex format and it's good to +# avoid changing the part of the boot code that reads the uncompressed size. +# Note that the bytes added by size_append will make the xz tool think that +# the file is corrupt. This is expected. +# +# xzmisc doesn't use size_append, so it can be used to create normal .xz +# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very +# big dictionary would increase the memory usage too much in the multi-call +# decompression mode. A BCJ filter isn't used either. +quiet_cmd_xzkern = XZKERN $@ +cmd_xzkern = (cat $(filter-out FORCE,$^) | \ + sh $(srctree)/scripts/xz_wrap.sh && \ + $(call size_append, $(filter-out FORCE,$^))) > $@ || \ + (rm -f $@ ; false) + +quiet_cmd_xzmisc = XZMISC $@ +cmd_xzmisc = (cat $(filter-out FORCE,$^) | \ + xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ + (rm -f $@ ; false) |