Annotation of /alx-src/tags/kernel26-2.6.12-alx-r9/scripts/Makefile.lib
Parent Directory
| 
Revision Log
Revision 628 -
(hide annotations)
(download)
Wed Mar 4 10:48:58 2009 UTC (15 years, 3 months ago) by niro
Original Path: alx-src/trunk/kernel26-alx/linux/scripts/Makefile.lib
File size: 10122 byte(s)
Wed Mar 4 10:48:58 2009 UTC (15 years, 3 months ago) by niro
Original Path: alx-src/trunk/kernel26-alx/linux/scripts/Makefile.lib
File size: 10122 byte(s)
import linux sources based on 2.6.12-alx-r9: -using linux-2.6.12.6 -using 2.6.12-ck6 patch set -using fbsplash-0.9.2-r3 -using vesafb-tng-0.9-rc7 -using squashfs-2.2 -added cddvd-cmdfilter-drop.patch as ck dropped it -added via-epia-dri (cle266) patch -added zd1211-svn-32 wlan driver (http://zd1211.ath.cx/download/) -added debian patches to zd1211 for wep256 etc
| 1 | niro | 628 | # =========================================================================== |
| 2 | # kbuild: Generic definitions | ||
| 3 | # =========================================================================== | ||
| 4 | |||
| 5 | # Standard vars | ||
| 6 | |||
| 7 | comma := , | ||
| 8 | empty := | ||
| 9 | space := $(empty) $(empty) | ||
| 10 | |||
| 11 | # Backward compatibility - to be removed... | ||
| 12 | extra-y += $(EXTRA_TARGETS) | ||
| 13 | # Figure out what we need to build from the various variables | ||
| 14 | # =========================================================================== | ||
| 15 | |||
| 16 | # When an object is listed to be built compiled-in and modular, | ||
| 17 | # only build the compiled-in version | ||
| 18 | |||
| 19 | obj-m := $(filter-out $(obj-y),$(obj-m)) | ||
| 20 | |||
| 21 | # Libraries are always collected in one lib file. | ||
| 22 | # Filter out objects already built-in | ||
| 23 | |||
| 24 | lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) | ||
| 25 | |||
| 26 | |||
| 27 | # Handle objects in subdirs | ||
| 28 | # --------------------------------------------------------------------------- | ||
| 29 | # o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o | ||
| 30 | # and add the directory to the list of dirs to descend into: $(subdir-y) | ||
| 31 | # o if we encounter foo/ in $(obj-m), remove it from $(obj-m) | ||
| 32 | # and add the directory to the list of dirs to descend into: $(subdir-m) | ||
| 33 | |||
| 34 | __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) | ||
| 35 | subdir-y += $(__subdir-y) | ||
| 36 | __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) | ||
| 37 | subdir-m += $(__subdir-m) | ||
| 38 | obj-y := $(patsubst %/, %/built-in.o, $(obj-y)) | ||
| 39 | obj-m := $(filter-out %/, $(obj-m)) | ||
| 40 | |||
| 41 | # Subdirectories we need to descend into | ||
| 42 | |||
| 43 | subdir-ym := $(sort $(subdir-y) $(subdir-m)) | ||
| 44 | |||
| 45 | # if $(foo-objs) exists, foo.o is a composite object | ||
| 46 | multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) | ||
| 47 | multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) | ||
| 48 | multi-used := $(multi-used-y) $(multi-used-m) | ||
| 49 | single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m))) | ||
| 50 | |||
| 51 | # Build list of the parts of our composite objects, our composite | ||
| 52 | # objects depend on those (obviously) | ||
| 53 | multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y))) | ||
| 54 | multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y))) | ||
| 55 | multi-objs := $(multi-objs-y) $(multi-objs-m) | ||
| 56 | |||
| 57 | # $(subdir-obj-y) is the list of objects in $(obj-y) which do not live | ||
| 58 | # in the local directory | ||
| 59 | subdir-obj-y := $(foreach o,$(obj-y),$(if $(filter-out $(o),$(notdir $(o))),$(o))) | ||
| 60 | |||
| 61 | # $(obj-dirs) is a list of directories that contain object files | ||
| 62 | obj-dirs := $(dir $(multi-objs) $(subdir-obj-y)) | ||
| 63 | |||
| 64 | # Replace multi-part objects by their individual parts, look at local dir only | ||
| 65 | 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) | ||
| 66 | real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) | ||
| 67 | |||
| 68 | # Add subdir path | ||
| 69 | |||
| 70 | extra-y := $(addprefix $(obj)/,$(extra-y)) | ||
| 71 | always := $(addprefix $(obj)/,$(always)) | ||
| 72 | targets := $(addprefix $(obj)/,$(targets)) | ||
| 73 | obj-y := $(addprefix $(obj)/,$(obj-y)) | ||
| 74 | obj-m := $(addprefix $(obj)/,$(obj-m)) | ||
| 75 | lib-y := $(addprefix $(obj)/,$(lib-y)) | ||
| 76 | subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) | ||
| 77 | real-objs-y := $(addprefix $(obj)/,$(real-objs-y)) | ||
| 78 | real-objs-m := $(addprefix $(obj)/,$(real-objs-m)) | ||
| 79 | single-used-m := $(addprefix $(obj)/,$(single-used-m)) | ||
| 80 | multi-used-y := $(addprefix $(obj)/,$(multi-used-y)) | ||
| 81 | multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) | ||
| 82 | multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y)) | ||
| 83 | multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) | ||
| 84 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) | ||
| 85 | obj-dirs := $(addprefix $(obj)/,$(obj-dirs)) | ||
| 86 | |||
| 87 | # The temporary file to save gcc -MD generated dependencies must not | ||
| 88 | # contain a comma | ||
| 89 | depfile = $(subst $(comma),_,$(@D)/.$(@F).d) | ||
| 90 | |||
| 91 | # These flags are needed for modversions and compiling, so we define them here | ||
| 92 | # already | ||
| 93 | # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will | ||
| 94 | # end up in (or would, if it gets compiled in) | ||
| 95 | # Note: It's possible that one object gets potentially linked into more | ||
| 96 | # than one module. In that case KBUILD_MODNAME will be set to foo_bar, | ||
| 97 | # where foo and bar are the name of the modules. | ||
| 98 | basename_flags = -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) | ||
| 99 | modname_flags = $(if $(filter 1,$(words $(modname))),-DKBUILD_MODNAME=$(subst $(comma),_,$(subst -,_,$(modname)))) | ||
| 100 | |||
| 101 | _c_flags = $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$(*F).o) | ||
| 102 | _a_flags = $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o) | ||
| 103 | _cpp_flags = $(CPPFLAGS) $(EXTRA_CPPFLAGS) $(CPPFLAGS_$(@F)) | ||
| 104 | |||
| 105 | # If building the kernel in a separate objtree expand all occurrences | ||
| 106 | # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). | ||
| 107 | |||
| 108 | ifeq ($(KBUILD_SRC),) | ||
| 109 | __c_flags = $(_c_flags) | ||
| 110 | __a_flags = $(_a_flags) | ||
| 111 | __cpp_flags = $(_cpp_flags) | ||
| 112 | else | ||
| 113 | |||
| 114 | # Prefix -I with $(srctree) if it is not an absolute path | ||
| 115 | addtree = $(if $(filter-out -I/%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1))) $(1) | ||
| 116 | # Find all -I options and call addtree | ||
| 117 | flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o))) | ||
| 118 | |||
| 119 | # -I$(obj) locates generated .h files | ||
| 120 | # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files | ||
| 121 | # and locates generated .h files | ||
| 122 | # FIXME: Replace both with specific CFLAGS* statements in the makefiles | ||
| 123 | __c_flags = $(call addtree,-I$(obj)) $(call flags,_c_flags) | ||
| 124 | __a_flags = $(call flags,_a_flags) | ||
| 125 | __cpp_flags = $(call flags,_cpp_flags) | ||
| 126 | endif | ||
| 127 | |||
| 128 | c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \ | ||
| 129 | $(__c_flags) $(modkern_cflags) \ | ||
| 130 | $(basename_flags) $(modname_flags) | ||
| 131 | |||
| 132 | a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \ | ||
| 133 | $(__a_flags) $(modkern_aflags) | ||
| 134 | |||
| 135 | cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(__cpp_flags) | ||
| 136 | |||
| 137 | ld_flags = $(LDFLAGS) $(EXTRA_LDFLAGS) | ||
| 138 | |||
| 139 | # Finds the multi-part object the current object will be linked into | ||
| 140 | modname-multi = $(sort $(foreach m,$(multi-used),\ | ||
| 141 | $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) | ||
| 142 | |||
| 143 | # Shipped files | ||
| 144 | # =========================================================================== | ||
| 145 | |||
| 146 | quiet_cmd_shipped = SHIPPED $@ | ||
| 147 | cmd_shipped = cat $< > $@ | ||
| 148 | |||
| 149 | $(obj)/%:: $(src)/%_shipped | ||
| 150 | $(call cmd,shipped) | ||
| 151 | |||
| 152 | # Commands useful for building a boot image | ||
| 153 | # =========================================================================== | ||
| 154 | # | ||
| 155 | # Use as following: | ||
| 156 | # | ||
| 157 | # target: source(s) FORCE | ||
| 158 | # $(if_changed,ld/objcopy/gzip) | ||
| 159 | # | ||
| 160 | # and add target to EXTRA_TARGETS so that we know we have to | ||
| 161 | # read in the saved command line | ||
| 162 | |||
| 163 | # Linking | ||
| 164 | # --------------------------------------------------------------------------- | ||
| 165 | |||
| 166 | quiet_cmd_ld = LD $@ | ||
| 167 | cmd_ld = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) \ | ||
| 168 | $(filter-out FORCE,$^) -o $@ | ||
| 169 | |||
| 170 | # Objcopy | ||
| 171 | # --------------------------------------------------------------------------- | ||
| 172 | |||
| 173 | quiet_cmd_objcopy = OBJCOPY $@ | ||
| 174 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | ||
| 175 | |||
| 176 | # Gzip | ||
| 177 | # --------------------------------------------------------------------------- | ||
| 178 | |||
| 179 | quiet_cmd_gzip = GZIP $@ | ||
| 180 | cmd_gzip = gzip -f -9 < $< > $@ | ||
| 181 | |||
| 182 | # =========================================================================== | ||
| 183 | # Generic stuff | ||
| 184 | # =========================================================================== | ||
| 185 | |||
| 186 | ifneq ($(KBUILD_NOCMDDEP),1) | ||
| 187 | # Check if both arguments has same arguments. Result in empty string if equal | ||
| 188 | # User may override this check using make KBUILD_NOCMDDEP=1 | ||
| 189 | arg-check = $(strip $(filter-out $(1), $(2)) $(filter-out $(2), $(1)) ) | ||
| 190 | |||
| 191 | endif | ||
| 192 | |||
| 193 | # echo command. Short version is $(quiet) equals quiet, otherwise full command | ||
| 194 | echo-cmd = $(if $($(quiet)cmd_$(1)), \ | ||
| 195 | echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) | ||
| 196 | |||
| 197 | # function to only execute the passed command if necessary | ||
| 198 | # >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file | ||
| 199 | # note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars | ||
| 200 | # | ||
| 201 | if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \ | ||
| 202 | @set -e; \ | ||
| 203 | $(echo-cmd) \ | ||
| 204 | $(cmd_$(1)); \ | ||
| 205 | echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd) | ||
| 206 | |||
| 207 | |||
| 208 | # execute the command and also postprocess generated .d dependencies | ||
| 209 | # file | ||
| 210 | |||
| 211 | if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\ | ||
| 212 | $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \ | ||
| 213 | @set -e; \ | ||
| 214 | $(echo-cmd) \ | ||
| 215 | $(cmd_$(1)); \ | ||
| 216 | scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \ | ||
| 217 | rm -f $(depfile); \ | ||
| 218 | mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd) | ||
| 219 | |||
| 220 | # Usage: $(call if_changed_rule,foo) | ||
| 221 | # will check if $(cmd_foo) changed, or any of the prequisites changed, | ||
| 222 | # and if so will execute $(rule_foo) | ||
| 223 | |||
| 224 | if_changed_rule = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\ | ||
| 225 | @set -e; \ | ||
| 226 | $(rule_$(1))) | ||
| 227 | |||
| 228 | # If quiet is set, only print short version of command | ||
| 229 | |||
| 230 | cmd = @$(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))' &&) $(cmd_$(1)) | ||
| 231 | |||
| 232 | # $(call descend,<dir>,<target>) | ||
| 233 | # Recursively call a sub-make in <dir> with target <target> | ||
| 234 | # Usage is deprecated, because make do not see this as an invocation of make. | ||
| 235 | descend =$(Q)$(MAKE) -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj=$(1) $(2) | ||
| 236 | |||
| 237 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj= | ||
| 238 | # Usage: | ||
| 239 | # $(Q)$(MAKE) $(build)=dir | ||
| 240 | build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj | ||
| 241 | |||
| 242 | # filechk is used to check if the content of a generated file is updated. | ||
| 243 | # Sample usage: | ||
| 244 | # define filechk_sample | ||
| 245 | # echo $KERNELRELEASE | ||
| 246 | # endef | ||
| 247 | # version.h : Makefile | ||
| 248 | # $(call filechk,sample) | ||
| 249 | # The rule defined shall write to stdout the content of the new file. | ||
| 250 | # The existing file will be compared with the new one. | ||
| 251 | # - If no file exist it is created | ||
| 252 | # - If the content differ the new file is used | ||
| 253 | # - If they are equal no change, and no timestamp update | ||
| 254 | |||
| 255 | define filechk | ||
| 256 | $(Q)set -e; \ | ||
| 257 | echo ' CHK $@'; \ | ||
| 258 | mkdir -p $(dir $@); \ | ||
| 259 | $(filechk_$(1)) $(2) > $@.tmp; \ | ||
| 260 | if [ -r $@ ] && cmp -s $@ $@.tmp; then \ | ||
| 261 | rm -f $@.tmp; \ | ||
| 262 | else \ | ||
| 263 | echo ' UPD $@'; \ | ||
| 264 | mv -f $@.tmp $@; \ | ||
| 265 | fi | ||
| 266 | endef | ||
| 267 |