Sam Ravnborg | f77bf01 | 2007-10-15 22:25:06 +0200 | [diff] [blame] | 1 | # Backward compatibility |
| 2 | asflags-y += $(EXTRA_AFLAGS) |
| 3 | ccflags-y += $(EXTRA_CFLAGS) |
| 4 | cppflags-y += $(EXTRA_CPPFLAGS) |
| 5 | ldflags-y += $(EXTRA_LDFLAGS) |
| 6 | |
Sam Ravnborg | 720097d | 2009-04-19 11:04:26 +0200 | [diff] [blame] | 7 | # |
| 8 | # flags that take effect in sub directories |
| 9 | export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y) |
| 10 | export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y) |
| 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | # Figure out what we need to build from the various variables |
| 13 | # =========================================================================== |
| 14 | |
| 15 | # When an object is listed to be built compiled-in and modular, |
| 16 | # only build the compiled-in version |
| 17 | |
| 18 | obj-m := $(filter-out $(obj-y),$(obj-m)) |
| 19 | |
| 20 | # Libraries are always collected in one lib file. |
| 21 | # Filter out objects already built-in |
| 22 | |
| 23 | lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) |
| 24 | |
| 25 | |
| 26 | # Handle objects in subdirs |
| 27 | # --------------------------------------------------------------------------- |
| 28 | # o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o |
| 29 | # and add the directory to the list of dirs to descend into: $(subdir-y) |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 30 | # o if we encounter foo/ in $(obj-m), remove it from $(obj-m) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | # and add the directory to the list of dirs to descend into: $(subdir-m) |
| 32 | |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 33 | # Determine modorder. |
| 34 | # Unfortunately, we don't have information about ordering between -y |
| 35 | # and -m subdirs. Just put -y's first. |
| 36 | modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko)) |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) |
| 39 | subdir-y += $(__subdir-y) |
| 40 | __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) |
| 41 | subdir-m += $(__subdir-m) |
| 42 | obj-y := $(patsubst %/, %/built-in.o, $(obj-y)) |
| 43 | obj-m := $(filter-out %/, $(obj-m)) |
| 44 | |
| 45 | # Subdirectories we need to descend into |
| 46 | |
| 47 | subdir-ym := $(sort $(subdir-y) $(subdir-m)) |
| 48 | |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 49 | # if $(foo-objs) exists, foo.o is a composite object |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) |
Michal Marek | cf4f219 | 2015-10-27 14:02:24 +0100 | [diff] [blame] | 51 | multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | multi-used := $(multi-used-y) $(multi-used-m) |
| 53 | single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m))) |
| 54 | |
| 55 | # Build list of the parts of our composite objects, our composite |
| 56 | # objects depend on those (obviously) |
| 57 | multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y))) |
| 58 | multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y))) |
| 59 | multi-objs := $(multi-objs-y) $(multi-objs-m) |
| 60 | |
Sam Ravnborg | f5fb976 | 2007-09-15 08:55:39 +0200 | [diff] [blame] | 61 | # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to |
| 62 | # tell kbuild to descend |
| 63 | subdir-obj-y := $(filter %/built-in.o, $(obj-y)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | # $(obj-dirs) is a list of directories that contain object files |
张忠山 | 4d47dde | 2013-06-30 17:09:28 +0800 | [diff] [blame] | 66 | obj-dirs := $(dir $(multi-objs) $(obj-y)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | # Replace multi-part objects by their individual parts, look at local dir only |
| 69 | 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) |
Michal Marek | cf4f219 | 2015-10-27 14:02:24 +0100 | [diff] [blame] | 70 | real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | # Add subdir path |
| 73 | |
| 74 | extra-y := $(addprefix $(obj)/,$(extra-y)) |
| 75 | always := $(addprefix $(obj)/,$(always)) |
| 76 | targets := $(addprefix $(obj)/,$(targets)) |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 77 | modorder := $(addprefix $(obj)/,$(modorder)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | obj-y := $(addprefix $(obj)/,$(obj-y)) |
| 79 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
| 80 | lib-y := $(addprefix $(obj)/,$(lib-y)) |
| 81 | subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) |
| 82 | real-objs-y := $(addprefix $(obj)/,$(real-objs-y)) |
| 83 | real-objs-m := $(addprefix $(obj)/,$(real-objs-m)) |
| 84 | single-used-m := $(addprefix $(obj)/,$(single-used-m)) |
| 85 | multi-used-y := $(addprefix $(obj)/,$(multi-used-y)) |
| 86 | multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) |
| 87 | multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y)) |
| 88 | multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) |
| 89 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
| 90 | obj-dirs := $(addprefix $(obj)/,$(obj-dirs)) |
| 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | # These flags are needed for modversions and compiling, so we define them here |
| 93 | # already |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 94 | # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | # end up in (or would, if it gets compiled in) |
Michal Marek | 5bb0571 | 2012-01-08 21:54:43 +0100 | [diff] [blame] | 96 | # Note: Files that end up in two or more modules are compiled without the |
| 97 | # KBUILD_MODNAME definition. The reason is that any made-up name would |
| 98 | # differ in different configs. |
Michal Marek | b42841b | 2016-03-17 16:32:14 +0100 | [diff] [blame] | 99 | name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote) |
| 100 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
Ustyugov Roman | f83b5e3 | 2005-09-23 08:42:11 +0400 | [diff] [blame] | 101 | modname_flags = $(if $(filter 1,$(words $(modname))),\ |
Michal Marek | b42841b | 2016-03-17 16:32:14 +0100 | [diff] [blame] | 102 | -DKBUILD_MODNAME=$(call name-fix,$(modname))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
Sam Ravnborg | 720097d | 2009-04-19 11:04:26 +0200 | [diff] [blame] | 104 | orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \ |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 105 | $(ccflags-y) $(CFLAGS_$(basetarget).o) |
Steven Rostedt | 656ee82 | 2008-05-14 21:30:29 -0400 | [diff] [blame] | 106 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) |
Heiko Carstens | a7e137e | 2015-11-05 14:03:27 +0100 | [diff] [blame] | 107 | orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \ |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 108 | $(asflags-y) $(AFLAGS_$(basetarget).o) |
Heiko Carstens | a7e137e | 2015-11-05 14:03:27 +0100 | [diff] [blame] | 109 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags)) |
Sam Ravnborg | f77bf01 | 2007-10-15 22:25:06 +0200 | [diff] [blame] | 110 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 112 | # |
| 113 | # Enable gcov profiling flags for a file, directory or for all files depending |
| 114 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL |
| 115 | # (in this order) |
| 116 | # |
| 117 | ifeq ($(CONFIG_GCOV_KERNEL),y) |
| 118 | _c_flags += $(if $(patsubst n%,, \ |
| 119 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ |
| 120 | $(CFLAGS_GCOV)) |
| 121 | endif |
| 122 | |
Andrey Ryabinin | 0b24bec | 2015-02-13 14:39:17 -0800 | [diff] [blame] | 123 | # |
| 124 | # Enable address sanitizer flags for kernel except some files or directories |
| 125 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) |
| 126 | # |
| 127 | ifeq ($(CONFIG_KASAN),y) |
| 128 | _c_flags += $(if $(patsubst n%,, \ |
| 129 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ |
| 130 | $(CFLAGS_KASAN)) |
| 131 | endif |
| 132 | |
Andrey Ryabinin | c6d3085 | 2016-01-20 15:00:55 -0800 | [diff] [blame] | 133 | ifeq ($(CONFIG_UBSAN),y) |
| 134 | _c_flags += $(if $(patsubst n%,, \ |
| 135 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ |
| 136 | $(CFLAGS_UBSAN)) |
| 137 | endif |
| 138 | |
Dmitry Vyukov | 5c9a875 | 2016-03-22 14:27:30 -0700 | [diff] [blame] | 139 | ifeq ($(CONFIG_KCOV),y) |
| 140 | _c_flags += $(if $(patsubst n%,, \ |
Vegard Nossum | a4691de | 2016-08-02 14:07:30 -0700 | [diff] [blame] | 141 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
Dmitry Vyukov | 5c9a875 | 2016-03-22 14:27:30 -0700 | [diff] [blame] | 142 | $(CFLAGS_KCOV)) |
| 143 | endif |
| 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | # If building the kernel in a separate objtree expand all occurrences |
| 146 | # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). |
| 147 | |
| 148 | ifeq ($(KBUILD_SRC),) |
| 149 | __c_flags = $(_c_flags) |
| 150 | __a_flags = $(_a_flags) |
| 151 | __cpp_flags = $(_cpp_flags) |
| 152 | else |
| 153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | # -I$(obj) locates generated .h files |
| 155 | # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files |
| 156 | # and locates generated .h files |
| 157 | # FIXME: Replace both with specific CFLAGS* statements in the makefiles |
Arnd Bergmann | db547ef | 2016-06-15 17:45:47 +0200 | [diff] [blame] | 158 | __c_flags = $(if $(obj),-I$(srctree)/$(src) -I$(obj)) \ |
| 159 | $(call flags,_c_flags) |
| 160 | __a_flags = $(call flags,_a_flags) |
| 161 | __cpp_flags = $(call flags,_cpp_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | endif |
| 163 | |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 164 | c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| 165 | $(__c_flags) $(modkern_cflags) \ |
Michal Marek | b42841b | 2016-03-17 16:32:14 +0100 | [diff] [blame] | 166 | $(basename_flags) $(modname_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 168 | a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | $(__a_flags) $(modkern_aflags) |
| 170 | |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 171 | cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| 172 | $(__cpp_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Sam Ravnborg | f77bf01 | 2007-10-15 22:25:06 +0200 | [diff] [blame] | 174 | ld_flags = $(LDFLAGS) $(ldflags-y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | |
Ian Campbell | b0a4d8b | 2013-05-31 11:14:20 +0100 | [diff] [blame] | 176 | dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ |
Stephen Warren | e570d7c | 2013-02-12 15:03:37 -0700 | [diff] [blame] | 177 | -I$(srctree)/arch/$(SRCARCH)/boot/dts \ |
Stephen Warren | c58299a | 2013-02-20 13:39:41 -0700 | [diff] [blame] | 178 | -I$(srctree)/arch/$(SRCARCH)/boot/dts/include \ |
Grant Likely | b519051 | 2014-02-18 21:46:16 +0000 | [diff] [blame] | 179 | -I$(srctree)/drivers/of/testcase-data \ |
Stephen Warren | e570d7c | 2013-02-12 15:03:37 -0700 | [diff] [blame] | 180 | -undef -D__DTS__ |
| 181 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | # Finds the multi-part object the current object will be linked into |
| 183 | modname-multi = $(sort $(foreach m,$(multi-used),\ |
| 184 | $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) |
| 185 | |
Masahiro Yamada | c8589d1 | 2014-08-19 16:34:20 +0900 | [diff] [blame] | 186 | # Useful for describing the dependency of composite objects |
| 187 | # Usage: |
| 188 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) |
| 189 | define multi_depend |
| 190 | $(foreach m, $(notdir $1), \ |
| 191 | $(eval $(obj)/$m: \ |
| 192 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) |
| 193 | endef |
| 194 | |
Arnaud Lacombe | 7373f4f | 2011-05-23 00:04:43 -0400 | [diff] [blame] | 195 | ifdef REGENERATE_PARSERS |
| 196 | |
| 197 | # GPERF |
| 198 | # --------------------------------------------------------------------------- |
| 199 | quiet_cmd_gperf = GPERF $@ |
| 200 | cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $< |
| 201 | |
Peter Foley | 58238c8 | 2011-07-31 14:45:40 -0400 | [diff] [blame] | 202 | .PRECIOUS: $(src)/%.hash.c_shipped |
Arnaud Lacombe | 7373f4f | 2011-05-23 00:04:43 -0400 | [diff] [blame] | 203 | $(src)/%.hash.c_shipped: $(src)/%.gperf |
| 204 | $(call cmd,gperf) |
| 205 | |
| 206 | # LEX |
| 207 | # --------------------------------------------------------------------------- |
| 208 | LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy) |
| 209 | |
| 210 | quiet_cmd_flex = LEX $@ |
| 211 | cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $< |
| 212 | |
Peter Foley | 58238c8 | 2011-07-31 14:45:40 -0400 | [diff] [blame] | 213 | .PRECIOUS: $(src)/%.lex.c_shipped |
Arnaud Lacombe | 7373f4f | 2011-05-23 00:04:43 -0400 | [diff] [blame] | 214 | $(src)/%.lex.c_shipped: $(src)/%.l |
| 215 | $(call cmd,flex) |
| 216 | |
| 217 | # YACC |
| 218 | # --------------------------------------------------------------------------- |
| 219 | YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy) |
| 220 | |
| 221 | quiet_cmd_bison = YACC $@ |
| 222 | cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $< |
| 223 | |
Peter Foley | 58238c8 | 2011-07-31 14:45:40 -0400 | [diff] [blame] | 224 | .PRECIOUS: $(src)/%.tab.c_shipped |
Arnaud Lacombe | 7373f4f | 2011-05-23 00:04:43 -0400 | [diff] [blame] | 225 | $(src)/%.tab.c_shipped: $(src)/%.y |
| 226 | $(call cmd,bison) |
| 227 | |
| 228 | quiet_cmd_bison_h = YACC $@ |
| 229 | cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $< |
| 230 | |
Peter Foley | 58238c8 | 2011-07-31 14:45:40 -0400 | [diff] [blame] | 231 | .PRECIOUS: $(src)/%.tab.h_shipped |
Arnaud Lacombe | 7373f4f | 2011-05-23 00:04:43 -0400 | [diff] [blame] | 232 | $(src)/%.tab.h_shipped: $(src)/%.y |
| 233 | $(call cmd,bison_h) |
| 234 | |
| 235 | endif |
| 236 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | # Shipped files |
| 238 | # =========================================================================== |
| 239 | |
| 240 | quiet_cmd_shipped = SHIPPED $@ |
| 241 | cmd_shipped = cat $< > $@ |
| 242 | |
Arnaud Lacombe | 991d76c | 2011-06-07 13:09:28 -0400 | [diff] [blame] | 243 | $(obj)/%: $(src)/%_shipped |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | $(call cmd,shipped) |
| 245 | |
| 246 | # Commands useful for building a boot image |
| 247 | # =========================================================================== |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 248 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | # Use as following: |
| 250 | # |
| 251 | # target: source(s) FORCE |
| 252 | # $(if_changed,ld/objcopy/gzip) |
| 253 | # |
Sam Ravnborg | 836caba | 2007-09-30 20:34:36 +0200 | [diff] [blame] | 254 | # and add target to extra-y so that we know we have to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | # read in the saved command line |
| 256 | |
| 257 | # Linking |
| 258 | # --------------------------------------------------------------------------- |
| 259 | |
| 260 | quiet_cmd_ld = LD $@ |
Sam Ravnborg | f77bf01 | 2007-10-15 22:25:06 +0200 | [diff] [blame] | 261 | cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \ |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 262 | $(filter-out FORCE,$^) -o $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
| 264 | # Objcopy |
| 265 | # --------------------------------------------------------------------------- |
| 266 | |
| 267 | quiet_cmd_objcopy = OBJCOPY $@ |
| 268 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ |
| 269 | |
| 270 | # Gzip |
| 271 | # --------------------------------------------------------------------------- |
| 272 | |
| 273 | quiet_cmd_gzip = GZIP $@ |
Michal Marek | 6ae9ecb | 2011-03-31 15:47:55 +0200 | [diff] [blame] | 274 | cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 275 | (rm -f $@ ; false) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 277 | # DTC |
| 278 | # --------------------------------------------------------------------------- |
Rob Herring | 6b22b3d | 2016-02-11 16:28:13 -0600 | [diff] [blame] | 279 | DTC ?= $(objtree)/scripts/dtc/dtc |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 280 | |
Rob Herring | bc55398 | 2016-03-24 10:52:42 -0500 | [diff] [blame] | 281 | # Disable noisy checks by default |
| 282 | ifeq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),) |
| 283 | DTC_FLAGS += -Wno-unit_address_vs_reg |
| 284 | endif |
| 285 | |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 286 | # Generate an assembly file to wrap the output of the device tree compiler |
James Hogan | 1c00a47 | 2013-06-13 11:53:09 +0100 | [diff] [blame] | 287 | quiet_cmd_dt_S_dtb= DTB $@ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 288 | cmd_dt_S_dtb= \ |
| 289 | ( \ |
| 290 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ |
| 291 | echo '.section .dtb.init.rodata,"a"'; \ |
| 292 | echo '.balign STRUCT_ALIGNMENT'; \ |
| 293 | echo '.global __dtb_$(*F)_begin'; \ |
| 294 | echo '__dtb_$(*F)_begin:'; \ |
| 295 | echo '.incbin "$<" '; \ |
| 296 | echo '__dtb_$(*F)_end:'; \ |
| 297 | echo '.global __dtb_$(*F)_end'; \ |
| 298 | echo '.balign STRUCT_ALIGNMENT'; \ |
| 299 | ) > $@ |
| 300 | |
| 301 | $(obj)/%.dtb.S: $(obj)/%.dtb |
| 302 | $(call cmd,dt_S_dtb) |
| 303 | |
Puja Gupta | 7da26a5 | 2017-02-10 15:15:23 -0800 | [diff] [blame] | 304 | ifneq ($(DTC_EXT),) |
| 305 | DTC = $(DTC_EXT) |
| 306 | else |
| 307 | DTC = $(objtree)/scripts/dtc/dtc |
| 308 | endif |
| 309 | |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 310 | quiet_cmd_dtc = DTC $@ |
Nathan Rossi | 77479b3 | 2015-03-30 14:39:08 +0200 | [diff] [blame] | 311 | cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ |
| 312 | $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
Rob Herring | 6b22b3d | 2016-02-11 16:28:13 -0600 | [diff] [blame] | 313 | $(DTC) -O dtb -o $@ -b 0 \ |
Matthijs Kooijman | ad06156 | 2013-05-08 12:59:04 +0200 | [diff] [blame] | 314 | -i $(dir $<) $(DTC_FLAGS) \ |
Ian Campbell | b0a4d8b | 2013-05-31 11:14:20 +0100 | [diff] [blame] | 315 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
| 316 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
Stephen Warren | 90b335f | 2012-11-27 16:29:10 -0700 | [diff] [blame] | 318 | $(obj)/%.dtb: $(src)/%.dts FORCE |
| 319 | $(call if_changed_dep,dtc) |
| 320 | |
Ian Campbell | b0a4d8b | 2013-05-31 11:14:20 +0100 | [diff] [blame] | 321 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
Stephen Warren | 22435f3 | 2013-02-05 12:06:28 -0700 | [diff] [blame] | 322 | |
Colin Cross | 4313d4e | 2013-04-17 16:58:36 -0700 | [diff] [blame] | 323 | # cat |
| 324 | # --------------------------------------------------------------------------- |
| 325 | # Concatentate multiple files together |
| 326 | quiet_cmd_cat = CAT $@ |
| 327 | cmd_cat = (cat $(filter-out FORCE,$^) > $@) || (rm -f $@; false) |
| 328 | |
Alain Knaff | bc22c17 | 2009-01-04 22:46:16 +0100 | [diff] [blame] | 329 | # Bzip2 |
| 330 | # --------------------------------------------------------------------------- |
| 331 | |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 332 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
| 333 | # append the size as a 32-bit littleendian number as gzip does. |
Michael Tokarev | 4a2ff67 | 2009-10-13 22:22:46 +0200 | [diff] [blame] | 334 | size_append = printf $(shell \ |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 335 | dec_size=0; \ |
| 336 | for F in $1; do \ |
| 337 | fsize=$$(stat -c "%s" $$F); \ |
| 338 | dec_size=$$(expr $$dec_size + $$fsize); \ |
| 339 | done; \ |
Jonathan Nieder | 1373411 | 2009-12-28 19:38:27 +0000 | [diff] [blame] | 340 | printf "%08x\n" $$dec_size | \ |
| 341 | sed 's/\(..\)/\1 /g' | { \ |
| 342 | read ch0 ch1 ch2 ch3; \ |
| 343 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ |
| 344 | printf '%s%03o' '\\' $$((0x$$ch)); \ |
| 345 | done; \ |
| 346 | } \ |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 347 | ) |
Alain Knaff | bc22c17 | 2009-01-04 22:46:16 +0100 | [diff] [blame] | 348 | |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 349 | quiet_cmd_bzip2 = BZIP2 $@ |
| 350 | cmd_bzip2 = (cat $(filter-out FORCE,$^) | \ |
| 351 | bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| 352 | (rm -f $@ ; false) |
Alain Knaff | bc22c17 | 2009-01-04 22:46:16 +0100 | [diff] [blame] | 353 | |
| 354 | # Lzma |
| 355 | # --------------------------------------------------------------------------- |
| 356 | |
| 357 | quiet_cmd_lzma = LZMA $@ |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 358 | cmd_lzma = (cat $(filter-out FORCE,$^) | \ |
| 359 | lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| 360 | (rm -f $@ ; false) |
Albin Tonnerre | 7dd65fe | 2010-01-08 14:42:42 -0800 | [diff] [blame] | 361 | |
Wu Zhangjin | 2d74b2c | 2010-03-11 17:42:14 +0800 | [diff] [blame] | 362 | quiet_cmd_lzo = LZO $@ |
Albin Tonnerre | 7dd65fe | 2010-01-08 14:42:42 -0800 | [diff] [blame] | 363 | cmd_lzo = (cat $(filter-out FORCE,$^) | \ |
| 364 | lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| 365 | (rm -f $@ ; false) |
Borislav Petkov | d61931d | 2010-03-05 17:34:46 +0100 | [diff] [blame] | 366 | |
Kyungsik Lee | e76e1fd | 2013-07-08 16:01:46 -0700 | [diff] [blame] | 367 | quiet_cmd_lz4 = LZ4 $@ |
| 368 | cmd_lz4 = (cat $(filter-out FORCE,$^) | \ |
| 369 | lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| 370 | (rm -f $@ ; false) |
| 371 | |
Stephen Warren | e339364 | 2012-03-16 15:03:55 -0600 | [diff] [blame] | 372 | # U-Boot mkimage |
| 373 | # --------------------------------------------------------------------------- |
| 374 | |
| 375 | MKIMAGE := $(srctree)/scripts/mkuboot.sh |
| 376 | |
| 377 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces |
| 378 | # the number of overrides in arch makefiles |
| 379 | UIMAGE_ARCH ?= $(SRCARCH) |
| 380 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) |
| 381 | UIMAGE_OPTS-y ?= |
| 382 | UIMAGE_TYPE ?= kernel |
| 383 | UIMAGE_LOADADDR ?= arch_must_set_this |
| 384 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) |
| 385 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' |
| 386 | UIMAGE_IN ?= $< |
| 387 | UIMAGE_OUT ?= $@ |
| 388 | |
| 389 | quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT) |
| 390 | cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
| 391 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ |
| 392 | -T $(UIMAGE_TYPE) \ |
| 393 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ |
| 394 | -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT) |
| 395 | |
Lasse Collin | 24fa040 | 2011-01-12 17:01:22 -0800 | [diff] [blame] | 396 | # XZ |
| 397 | # --------------------------------------------------------------------------- |
| 398 | # Use xzkern to compress the kernel image and xzmisc to compress other things. |
| 399 | # |
| 400 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage |
| 401 | # of the kernel decompressor. A BCJ filter is used if it is available for |
| 402 | # the target architecture. xzkern also appends uncompressed size of the data |
| 403 | # using size_append. The .xz format has the size information available at |
| 404 | # the end of the file too, but it's in more complex format and it's good to |
| 405 | # avoid changing the part of the boot code that reads the uncompressed size. |
| 406 | # Note that the bytes added by size_append will make the xz tool think that |
| 407 | # the file is corrupt. This is expected. |
| 408 | # |
| 409 | # xzmisc doesn't use size_append, so it can be used to create normal .xz |
| 410 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very |
| 411 | # big dictionary would increase the memory usage too much in the multi-call |
| 412 | # decompression mode. A BCJ filter isn't used either. |
| 413 | quiet_cmd_xzkern = XZKERN $@ |
| 414 | cmd_xzkern = (cat $(filter-out FORCE,$^) | \ |
| 415 | sh $(srctree)/scripts/xz_wrap.sh && \ |
| 416 | $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| 417 | (rm -f $@ ; false) |
| 418 | |
| 419 | quiet_cmd_xzmisc = XZMISC $@ |
| 420 | cmd_xzmisc = (cat $(filter-out FORCE,$^) | \ |
| 421 | xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ |
| 422 | (rm -f $@ ; false) |
Matthias Kaehlcke | 67259a6 | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 423 | |
| 424 | # ASM offsets |
| 425 | # --------------------------------------------------------------------------- |
| 426 | |
| 427 | # Default sed regexp - multiline due to syntax constraints |
Jeroen Hofstee | ba790f5 | 2017-04-21 15:21:11 +0900 | [diff] [blame] | 428 | # |
| 429 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around |
| 430 | # the .ascii directive whereas GCC keeps the <space> as-is. |
Matthias Kaehlcke | 67259a6 | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 431 | define sed-offsets |
Jeroen Hofstee | ba790f5 | 2017-04-21 15:21:11 +0900 | [diff] [blame] | 432 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
| 433 | /^->/{s:->#\(.*\):/* \1 */:; \ |
Matthias Kaehlcke | 67259a6 | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 434 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
Jeroen Hofstee | ba790f5 | 2017-04-21 15:21:11 +0900 | [diff] [blame] | 435 | s:->::; p;}' |
Matthias Kaehlcke | 67259a6 | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 436 | endef |
| 437 | |
| 438 | # Use filechk to avoid rebuilds when a header changes, but the resulting file |
| 439 | # does not |
| 440 | define filechk_offsets |
| 441 | (set -e; \ |
| 442 | echo "#ifndef $2"; \ |
| 443 | echo "#define $2"; \ |
| 444 | echo "/*"; \ |
| 445 | echo " * DO NOT MODIFY."; \ |
| 446 | echo " *"; \ |
| 447 | echo " * This file was generated by Kbuild"; \ |
| 448 | echo " */"; \ |
| 449 | echo ""; \ |
| 450 | sed -ne $(sed-offsets); \ |
| 451 | echo ""; \ |
| 452 | echo "#endif" ) |
| 453 | endef |