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Commit | Line | Data |
---|---|---|
22433fc5 MY |
1 | # ========================================================================== |
2 | # Building | |
3 | # ========================================================================== | |
4 | ||
6825a95b | 5 | # Modified for U-Boot |
51148790 MY |
6 | prefix := tpl |
7 | src := $(patsubst $(prefix)/%,%,$(obj)) | |
8 | ifeq ($(obj),$(src)) | |
9 | prefix := spl | |
10 | src := $(patsubst $(prefix)/%,%,$(obj)) | |
11 | ifeq ($(obj),$(src)) | |
12 | prefix := . | |
13 | endif | |
6825a95b | 14 | endif |
22433fc5 MY |
15 | |
16 | PHONY := __build | |
17 | __build: | |
18 | ||
19 | # Init all relevant variables used in kbuild files so | |
20 | # 1) they have correct type | |
21 | # 2) they do not inherit any value from the environment | |
22 | obj-y := | |
23 | obj-m := | |
24 | lib-y := | |
25 | lib-m := | |
26 | always := | |
27 | targets := | |
28 | subdir-y := | |
29 | subdir-m := | |
30 | EXTRA_AFLAGS := | |
31 | EXTRA_CFLAGS := | |
32 | EXTRA_CPPFLAGS := | |
33 | EXTRA_LDFLAGS := | |
34 | asflags-y := | |
35 | ccflags-y := | |
36 | cppflags-y := | |
37 | ldflags-y := | |
38 | ||
39 | subdir-asflags-y := | |
40 | subdir-ccflags-y := | |
41 | ||
42 | # Read auto.conf if it exists, otherwise ignore | |
51148790 | 43 | # Modified for U-Boot |
e02ee254 | 44 | -include include/config/auto.conf |
51148790 | 45 | -include $(prefix)/include/autoconf.mk |
e02ee254 | 46 | include scripts/Makefile.uncmd_spl |
01072b44 | 47 | |
22433fc5 MY |
48 | include scripts/Kbuild.include |
49 | ||
50 | # For backward compatibility check that these variables do not change | |
51 | save-cflags := $(CFLAGS) | |
52 | ||
53 | # The filename Kbuild has precedence over Makefile | |
54 | kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) | |
55 | kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile) | |
56 | include $(kbuild-file) | |
57 | ||
026f9cf2 MY |
58 | # Added for U-Boot |
59 | asflags-y += $(PLATFORM_CPPFLAGS) | |
60 | ccflags-y += $(PLATFORM_CPPFLAGS) | |
61 | cppflags-y += $(PLATFORM_CPPFLAGS) | |
62 | ||
22433fc5 MY |
63 | # If the save-* variables changed error out |
64 | ifeq ($(KBUILD_NOPEDANTIC),) | |
65 | ifneq ("$(save-cflags)","$(CFLAGS)") | |
66 | $(error CFLAGS was changed in "$(kbuild-file)". Fix it to use ccflags-y) | |
67 | endif | |
68 | endif | |
69 | ||
22433fc5 MY |
70 | include scripts/Makefile.lib |
71 | ||
72 | ifdef host-progs | |
73 | ifneq ($(hostprogs-y),$(host-progs)) | |
74 | $(warning kbuild: $(obj)/Makefile - Usage of host-progs is deprecated. Please replace with hostprogs-y!) | |
75 | hostprogs-y += $(host-progs) | |
76 | endif | |
77 | endif | |
78 | ||
79 | # Do not include host rules unless needed | |
80 | ifneq ($(hostprogs-y)$(hostprogs-m),) | |
81 | include scripts/Makefile.host | |
82 | endif | |
83 | ||
6825a95b MY |
84 | # Uncommented for U-Boot |
85 | # We need to create output dicrectory for SPL and TPL even for in-tree build | |
86 | #ifneq ($(KBUILD_SRC),) | |
22433fc5 MY |
87 | # Create output directory if not already present |
88 | _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj)) | |
89 | ||
90 | # Create directories for object files if directory does not exist | |
91 | # Needed when obj-y := dir/file.o syntax is used | |
92 | _dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d))) | |
6825a95b | 93 | #endif |
22433fc5 MY |
94 | |
95 | ifndef obj | |
96 | $(warning kbuild: Makefile.build is included improperly) | |
97 | endif | |
98 | ||
99 | # =========================================================================== | |
100 | ||
176d0982 | 101 | ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),) |
22433fc5 MY |
102 | lib-target := $(obj)/lib.a |
103 | endif | |
104 | ||
176d0982 | 105 | ifneq ($(strip $(obj-y) $(obj-m) $(obj-) $(subdir-m) $(lib-target)),) |
22433fc5 MY |
106 | builtin-target := $(obj)/built-in.o |
107 | endif | |
108 | ||
109 | modorder-target := $(obj)/modules.order | |
110 | ||
111 | # We keep a list of all modules in $(MODVERDIR) | |
112 | ||
113 | __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \ | |
114 | $(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \ | |
115 | $(subdir-ym) $(always) | |
116 | @: | |
117 | ||
118 | # Linus' kernel sanity checking tool | |
119 | ifneq ($(KBUILD_CHECKSRC),0) | |
120 | ifeq ($(KBUILD_CHECKSRC),2) | |
121 | quiet_cmd_force_checksrc = CHECK $< | |
122 | cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ; | |
123 | else | |
124 | quiet_cmd_checksrc = CHECK $< | |
125 | cmd_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ; | |
126 | endif | |
127 | endif | |
128 | ||
129 | # Do section mismatch analysis for each module/built-in.o | |
130 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
131 | cmd_secanalysis = ; scripts/mod/modpost $@ | |
132 | endif | |
133 | ||
134 | # Compile C sources (.c) | |
135 | # --------------------------------------------------------------------------- | |
136 | ||
137 | # Default is built-in, unless we know otherwise | |
138 | modkern_cflags = \ | |
139 | $(if $(part-of-module), \ | |
140 | $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ | |
141 | $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL)) | |
142 | quiet_modtag := $(empty) $(empty) | |
143 | ||
144 | $(real-objs-m) : part-of-module := y | |
145 | $(real-objs-m:.o=.i) : part-of-module := y | |
146 | $(real-objs-m:.o=.s) : part-of-module := y | |
147 | $(real-objs-m:.o=.lst): part-of-module := y | |
148 | ||
149 | $(real-objs-m) : quiet_modtag := [M] | |
150 | $(real-objs-m:.o=.i) : quiet_modtag := [M] | |
151 | $(real-objs-m:.o=.s) : quiet_modtag := [M] | |
152 | $(real-objs-m:.o=.lst): quiet_modtag := [M] | |
153 | ||
154 | $(obj-m) : quiet_modtag := [M] | |
155 | ||
156 | # Default for not multi-part modules | |
157 | modname = $(basetarget) | |
158 | ||
159 | $(multi-objs-m) : modname = $(modname-multi) | |
160 | $(multi-objs-m:.o=.i) : modname = $(modname-multi) | |
161 | $(multi-objs-m:.o=.s) : modname = $(modname-multi) | |
162 | $(multi-objs-m:.o=.lst) : modname = $(modname-multi) | |
163 | $(multi-objs-y) : modname = $(modname-multi) | |
164 | $(multi-objs-y:.o=.i) : modname = $(modname-multi) | |
165 | $(multi-objs-y:.o=.s) : modname = $(modname-multi) | |
166 | $(multi-objs-y:.o=.lst) : modname = $(modname-multi) | |
167 | ||
168 | quiet_cmd_cc_s_c = CC $(quiet_modtag) $@ | |
598e2d33 | 169 | cmd_cc_s_c = $(CC) $(c_flags) $(DISABLE_LTO) -fverbose-asm -S -o $@ $< |
22433fc5 MY |
170 | |
171 | $(obj)/%.s: $(src)/%.c FORCE | |
172 | $(call if_changed_dep,cc_s_c) | |
173 | ||
174 | quiet_cmd_cc_i_c = CPP $(quiet_modtag) $@ | |
175 | cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $< | |
176 | ||
177 | $(obj)/%.i: $(src)/%.c FORCE | |
178 | $(call if_changed_dep,cc_i_c) | |
179 | ||
180 | cmd_gensymtypes = \ | |
181 | $(CPP) -D__GENKSYMS__ $(c_flags) $< | \ | |
182 | $(GENKSYMS) $(if $(1), -T $(2)) \ | |
183 | $(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \ | |
184 | $(if $(KBUILD_PRESERVE),-p) \ | |
185 | -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null)) | |
186 | ||
187 | quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@ | |
188 | cmd_cc_symtypes_c = \ | |
189 | set -e; \ | |
190 | $(call cmd_gensymtypes,true,$@) >/dev/null; \ | |
191 | test -s $@ || rm -f $@ | |
192 | ||
193 | $(obj)/%.symtypes : $(src)/%.c FORCE | |
194 | $(call cmd,cc_symtypes_c) | |
195 | ||
196 | # C (.c) files | |
197 | # The C file is compiled and updated dependency information is generated. | |
198 | # (See cmd_cc_o_c + relevant part of rule_cc_o_c) | |
199 | ||
200 | quiet_cmd_cc_o_c = CC $(quiet_modtag) $@ | |
201 | ||
202 | ifndef CONFIG_MODVERSIONS | |
203 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
204 | ||
205 | else | |
206 | # When module versioning is enabled the following steps are executed: | |
207 | # o compile a .tmp_<file>.o from <file>.c | |
208 | # o if .tmp_<file>.o doesn't contain a __ksymtab version, i.e. does | |
209 | # not export symbols, we just rename .tmp_<file>.o to <file>.o and | |
210 | # are done. | |
211 | # o otherwise, we calculate symbol versions using the good old | |
212 | # genksyms on the preprocessed source and postprocess them in a way | |
213 | # that they are usable as a linker script | |
214 | # o generate <file>.o from .tmp_<file>.o using the linker to | |
215 | # replace the unresolved symbols __crc_exported_symbol with | |
216 | # the actual value of the checksum generated by genksyms | |
217 | ||
218 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $< | |
219 | cmd_modversions = \ | |
220 | if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \ | |
221 | $(call cmd_gensymtypes,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \ | |
222 | > $(@D)/.tmp_$(@F:.o=.ver); \ | |
223 | \ | |
224 | $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \ | |
225 | -T $(@D)/.tmp_$(@F:.o=.ver); \ | |
226 | rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \ | |
227 | else \ | |
228 | mv -f $(@D)/.tmp_$(@F) $@; \ | |
229 | fi; | |
230 | endif | |
231 | ||
232 | ifdef CONFIG_FTRACE_MCOUNT_RECORD | |
233 | ifdef BUILD_C_RECORDMCOUNT | |
234 | ifeq ("$(origin RECORDMCOUNT_WARN)", "command line") | |
235 | RECORDMCOUNT_FLAGS = -w | |
236 | endif | |
237 | # Due to recursion, we must skip empty.o. | |
238 | # The empty.o file is created in the make process in order to determine | |
239 | # the target endianness and word size. It is made before all other C | |
240 | # files, including recordmcount. | |
241 | sub_cmd_record_mcount = \ | |
242 | if [ $(@) != "scripts/mod/empty.o" ]; then \ | |
243 | $(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) "$(@)"; \ | |
244 | fi; | |
245 | recordmcount_source := $(srctree)/scripts/recordmcount.c \ | |
246 | $(srctree)/scripts/recordmcount.h | |
247 | else | |
248 | sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ | |
249 | "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \ | |
250 | "$(if $(CONFIG_64BIT),64,32)" \ | |
251 | "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \ | |
252 | "$(LD)" "$(NM)" "$(RM)" "$(MV)" \ | |
253 | "$(if $(part-of-module),1,0)" "$(@)"; | |
254 | recordmcount_source := $(srctree)/scripts/recordmcount.pl | |
255 | endif | |
256 | cmd_record_mcount = \ | |
257 | if [ "$(findstring -pg,$(_c_flags))" = "-pg" ]; then \ | |
258 | $(sub_cmd_record_mcount) \ | |
259 | fi; | |
260 | endif | |
261 | ||
262 | define rule_cc_o_c | |
263 | $(call echo-cmd,checksrc) $(cmd_checksrc) \ | |
264 | $(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \ | |
265 | $(cmd_modversions) \ | |
266 | $(call echo-cmd,record_mcount) \ | |
267 | $(cmd_record_mcount) \ | |
268 | scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \ | |
269 | $(dot-target).tmp; \ | |
270 | rm -f $(depfile); \ | |
271 | mv -f $(dot-target).tmp $(dot-target).cmd | |
272 | endef | |
273 | ||
274 | # Built-in and composite module parts | |
275 | $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE | |
276 | $(call cmd,force_checksrc) | |
277 | $(call if_changed_rule,cc_o_c) | |
278 | ||
279 | # Single-part modules are special since we need to mark them in $(MODVERDIR) | |
280 | ||
281 | $(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE | |
282 | $(call cmd,force_checksrc) | |
283 | $(call if_changed_rule,cc_o_c) | |
284 | @{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod) | |
285 | ||
286 | quiet_cmd_cc_lst_c = MKLST $@ | |
287 | cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \ | |
288 | $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \ | |
289 | System.map $(OBJDUMP) > $@ | |
290 | ||
291 | $(obj)/%.lst: $(src)/%.c FORCE | |
292 | $(call if_changed_dep,cc_lst_c) | |
293 | ||
294 | # Compile assembler sources (.S) | |
295 | # --------------------------------------------------------------------------- | |
296 | ||
297 | modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL) | |
298 | ||
299 | $(real-objs-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE) | |
300 | $(real-objs-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE) | |
301 | ||
302 | quiet_cmd_as_s_S = CPP $(quiet_modtag) $@ | |
45f0ad95 | 303 | cmd_as_s_S = $(CPP) $(a_flags) -o $@ $< |
22433fc5 MY |
304 | |
305 | $(obj)/%.s: $(src)/%.S FORCE | |
306 | $(call if_changed_dep,as_s_S) | |
307 | ||
308 | quiet_cmd_as_o_S = AS $(quiet_modtag) $@ | |
309 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | |
310 | ||
311 | $(obj)/%.o: $(src)/%.S FORCE | |
312 | $(call if_changed_dep,as_o_S) | |
313 | ||
314 | targets += $(real-objs-y) $(real-objs-m) $(lib-y) | |
315 | targets += $(extra-y) $(MAKECMDGOALS) $(always) | |
316 | ||
317 | # Linker scripts preprocessor (.lds.S -> .lds) | |
318 | # --------------------------------------------------------------------------- | |
319 | quiet_cmd_cpp_lds_S = LDS $@ | |
320 | cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \ | |
321 | -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< | |
322 | ||
323 | $(obj)/%.lds: $(src)/%.lds.S FORCE | |
324 | $(call if_changed_dep,cpp_lds_S) | |
325 | ||
326 | # ASN.1 grammar | |
327 | # --------------------------------------------------------------------------- | |
328 | quiet_cmd_asn1_compiler = ASN.1 $@ | |
329 | cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \ | |
330 | $(subst .h,.c,$@) $(subst .c,.h,$@) | |
331 | ||
332 | .PRECIOUS: $(objtree)/$(obj)/%-asn1.c $(objtree)/$(obj)/%-asn1.h | |
333 | ||
334 | $(obj)/%-asn1.c $(obj)/%-asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler | |
335 | $(call cmd,asn1_compiler) | |
336 | ||
337 | # Build the compiled-in targets | |
338 | # --------------------------------------------------------------------------- | |
339 | ||
340 | # To build objects in subdirs, we need to descend into the directories | |
341 | $(sort $(subdir-obj-y)): $(subdir-ym) ; | |
342 | ||
343 | # | |
344 | # Rule to compile a set of .o files into one .o file | |
345 | # | |
346 | ifdef builtin-target | |
347 | quiet_cmd_link_o_target = LD $@ | |
348 | # If the list of objects to link is empty, just create an empty built-in.o | |
349 | cmd_link_o_target = $(if $(strip $(obj-y)),\ | |
350 | $(LD) $(ld_flags) -r -o $@ $(filter $(obj-y), $^) \ | |
351 | $(cmd_secanalysis),\ | |
352 | rm -f $@; $(AR) rcs$(KBUILD_ARFLAGS) $@) | |
353 | ||
354 | $(builtin-target): $(obj-y) FORCE | |
355 | $(call if_changed,link_o_target) | |
356 | ||
357 | targets += $(builtin-target) | |
358 | endif # builtin-target | |
359 | ||
360 | # | |
361 | # Rule to create modules.order file | |
362 | # | |
363 | # Create commands to either record .ko file or cat modules.order from | |
364 | # a subdirectory | |
365 | modorder-cmds = \ | |
366 | $(foreach m, $(modorder), \ | |
367 | $(if $(filter %/modules.order, $m), \ | |
368 | cat $m;, echo kernel/$m;)) | |
369 | ||
370 | $(modorder-target): $(subdir-ym) FORCE | |
371 | $(Q)(cat /dev/null; $(modorder-cmds)) > $@ | |
372 | ||
373 | # | |
374 | # Rule to compile a set of .o files into one .a file | |
375 | # | |
376 | ifdef lib-target | |
377 | quiet_cmd_link_l_target = AR $@ | |
378 | cmd_link_l_target = rm -f $@; $(AR) rcs$(KBUILD_ARFLAGS) $@ $(lib-y) | |
379 | ||
380 | $(lib-target): $(lib-y) FORCE | |
381 | $(call if_changed,link_l_target) | |
382 | ||
383 | targets += $(lib-target) | |
384 | endif | |
385 | ||
386 | # | |
387 | # Rule to link composite objects | |
388 | # | |
389 | # Composite objects are specified in kbuild makefile as follows: | |
390 | # <composite-object>-objs := <list of .o files> | |
391 | # or | |
392 | # <composite-object>-y := <list of .o files> | |
393 | link_multi_deps = \ | |
394 | $(filter $(addprefix $(obj)/, \ | |
395 | $($(subst $(obj)/,,$(@:.o=-objs))) \ | |
396 | $($(subst $(obj)/,,$(@:.o=-y)))), $^) | |
45f0ad95 | 397 | |
22433fc5 MY |
398 | quiet_cmd_link_multi-y = LD $@ |
399 | cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secanalysis) | |
400 | ||
401 | quiet_cmd_link_multi-m = LD [M] $@ | |
402 | cmd_link_multi-m = $(cmd_link_multi-y) | |
403 | ||
cb6e7b0d | 404 | $(multi-used-y): FORCE |
22433fc5 | 405 | $(call if_changed,link_multi-y) |
cb6e7b0d | 406 | $(call multi_depend, $(multi-used-y), .o, -objs -y) |
22433fc5 | 407 | |
cb6e7b0d | 408 | $(multi-used-m): FORCE |
22433fc5 MY |
409 | $(call if_changed,link_multi-m) |
410 | @{ echo $(@:.o=.ko); echo $(link_multi_deps); } > $(MODVERDIR)/$(@F:.o=.mod) | |
cb6e7b0d | 411 | $(call multi_depend, $(multi-used-m), .o, -objs -y) |
22433fc5 MY |
412 | |
413 | targets += $(multi-used-y) $(multi-used-m) | |
414 | ||
415 | ||
416 | # Descending | |
417 | # --------------------------------------------------------------------------- | |
418 | ||
419 | PHONY += $(subdir-ym) | |
420 | $(subdir-ym): | |
421 | $(Q)$(MAKE) $(build)=$@ | |
422 | ||
423 | # Add FORCE to the prequisites of a target to force it to be always rebuilt. | |
424 | # --------------------------------------------------------------------------- | |
425 | ||
426 | PHONY += FORCE | |
427 | ||
428 | FORCE: | |
429 | ||
430 | # Read all saved command lines and dependencies for the $(targets) we | |
431 | # may be building above, using $(if_changed{,_dep}). As an | |
432 | # optimization, we don't need to read them if the target does not | |
433 | # exist, we will rebuild anyway in that case. | |
434 | ||
435 | targets := $(wildcard $(sort $(targets))) | |
436 | cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
437 | ||
438 | ifneq ($(cmd_files),) | |
439 | include $(cmd_files) | |
440 | endif | |
441 | ||
442 | # Declare the contents of the .PHONY variable as phony. We keep that | |
443 | # information in a variable se we can use it in if_changed and friends. | |
444 | ||
445 | .PHONY: $(PHONY) |