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Commit | Line | Data |
---|---|---|
22433fc5 MY |
1 | # ========================================================================== |
2 | # Building | |
3 | # ========================================================================== | |
f32c8649 TR |
4 | # |
5 | # SPDX-License-Identifier: GPL-2.0 | |
6 | # | |
22433fc5 | 7 | |
6825a95b | 8 | # Modified for U-Boot |
51148790 MY |
9 | prefix := tpl |
10 | src := $(patsubst $(prefix)/%,%,$(obj)) | |
11 | ifeq ($(obj),$(src)) | |
12 | prefix := spl | |
13 | src := $(patsubst $(prefix)/%,%,$(obj)) | |
14 | ifeq ($(obj),$(src)) | |
15 | prefix := . | |
16 | endif | |
6825a95b | 17 | endif |
22433fc5 MY |
18 | |
19 | PHONY := __build | |
20 | __build: | |
21 | ||
22 | # Init all relevant variables used in kbuild files so | |
23 | # 1) they have correct type | |
24 | # 2) they do not inherit any value from the environment | |
25 | obj-y := | |
26 | obj-m := | |
27 | lib-y := | |
28 | lib-m := | |
29 | always := | |
30 | targets := | |
31 | subdir-y := | |
32 | subdir-m := | |
33 | EXTRA_AFLAGS := | |
34 | EXTRA_CFLAGS := | |
35 | EXTRA_CPPFLAGS := | |
36 | EXTRA_LDFLAGS := | |
37 | asflags-y := | |
38 | ccflags-y := | |
39 | cppflags-y := | |
40 | ldflags-y := | |
41 | ||
42 | subdir-asflags-y := | |
43 | subdir-ccflags-y := | |
44 | ||
45 | # Read auto.conf if it exists, otherwise ignore | |
51148790 | 46 | # Modified for U-Boot |
e02ee254 | 47 | -include include/config/auto.conf |
51148790 | 48 | -include $(prefix)/include/autoconf.mk |
e02ee254 | 49 | include scripts/Makefile.uncmd_spl |
01072b44 | 50 | |
22433fc5 MY |
51 | include scripts/Kbuild.include |
52 | ||
53 | # For backward compatibility check that these variables do not change | |
54 | save-cflags := $(CFLAGS) | |
55 | ||
56 | # The filename Kbuild has precedence over Makefile | |
57 | kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) | |
58 | kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile) | |
59 | include $(kbuild-file) | |
60 | ||
026f9cf2 MY |
61 | # Added for U-Boot |
62 | asflags-y += $(PLATFORM_CPPFLAGS) | |
63 | ccflags-y += $(PLATFORM_CPPFLAGS) | |
64 | cppflags-y += $(PLATFORM_CPPFLAGS) | |
65 | ||
22433fc5 MY |
66 | # If the save-* variables changed error out |
67 | ifeq ($(KBUILD_NOPEDANTIC),) | |
68 | ifneq ("$(save-cflags)","$(CFLAGS)") | |
69 | $(error CFLAGS was changed in "$(kbuild-file)". Fix it to use ccflags-y) | |
70 | endif | |
71 | endif | |
72 | ||
22433fc5 MY |
73 | include scripts/Makefile.lib |
74 | ||
75 | ifdef host-progs | |
76 | ifneq ($(hostprogs-y),$(host-progs)) | |
77 | $(warning kbuild: $(obj)/Makefile - Usage of host-progs is deprecated. Please replace with hostprogs-y!) | |
78 | hostprogs-y += $(host-progs) | |
79 | endif | |
80 | endif | |
81 | ||
82 | # Do not include host rules unless needed | |
83 | ifneq ($(hostprogs-y)$(hostprogs-m),) | |
84 | include scripts/Makefile.host | |
85 | endif | |
86 | ||
6825a95b MY |
87 | # Uncommented for U-Boot |
88 | # We need to create output dicrectory for SPL and TPL even for in-tree build | |
89 | #ifneq ($(KBUILD_SRC),) | |
22433fc5 MY |
90 | # Create output directory if not already present |
91 | _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj)) | |
92 | ||
93 | # Create directories for object files if directory does not exist | |
94 | # Needed when obj-y := dir/file.o syntax is used | |
95 | _dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d))) | |
6825a95b | 96 | #endif |
22433fc5 MY |
97 | |
98 | ifndef obj | |
99 | $(warning kbuild: Makefile.build is included improperly) | |
100 | endif | |
101 | ||
102 | # =========================================================================== | |
103 | ||
176d0982 | 104 | ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),) |
22433fc5 MY |
105 | lib-target := $(obj)/lib.a |
106 | endif | |
107 | ||
176d0982 | 108 | ifneq ($(strip $(obj-y) $(obj-m) $(obj-) $(subdir-m) $(lib-target)),) |
22433fc5 MY |
109 | builtin-target := $(obj)/built-in.o |
110 | endif | |
111 | ||
112 | modorder-target := $(obj)/modules.order | |
113 | ||
114 | # We keep a list of all modules in $(MODVERDIR) | |
115 | ||
116 | __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \ | |
117 | $(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \ | |
118 | $(subdir-ym) $(always) | |
119 | @: | |
120 | ||
121 | # Linus' kernel sanity checking tool | |
122 | ifneq ($(KBUILD_CHECKSRC),0) | |
123 | ifeq ($(KBUILD_CHECKSRC),2) | |
124 | quiet_cmd_force_checksrc = CHECK $< | |
125 | cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ; | |
126 | else | |
127 | quiet_cmd_checksrc = CHECK $< | |
128 | cmd_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ; | |
129 | endif | |
130 | endif | |
131 | ||
132 | # Do section mismatch analysis for each module/built-in.o | |
133 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
134 | cmd_secanalysis = ; scripts/mod/modpost $@ | |
135 | endif | |
136 | ||
137 | # Compile C sources (.c) | |
138 | # --------------------------------------------------------------------------- | |
139 | ||
140 | # Default is built-in, unless we know otherwise | |
141 | modkern_cflags = \ | |
142 | $(if $(part-of-module), \ | |
143 | $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ | |
144 | $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL)) | |
145 | quiet_modtag := $(empty) $(empty) | |
146 | ||
147 | $(real-objs-m) : part-of-module := y | |
148 | $(real-objs-m:.o=.i) : part-of-module := y | |
149 | $(real-objs-m:.o=.s) : part-of-module := y | |
150 | $(real-objs-m:.o=.lst): part-of-module := y | |
151 | ||
152 | $(real-objs-m) : quiet_modtag := [M] | |
153 | $(real-objs-m:.o=.i) : quiet_modtag := [M] | |
154 | $(real-objs-m:.o=.s) : quiet_modtag := [M] | |
155 | $(real-objs-m:.o=.lst): quiet_modtag := [M] | |
156 | ||
157 | $(obj-m) : quiet_modtag := [M] | |
158 | ||
159 | # Default for not multi-part modules | |
160 | modname = $(basetarget) | |
161 | ||
162 | $(multi-objs-m) : modname = $(modname-multi) | |
163 | $(multi-objs-m:.o=.i) : modname = $(modname-multi) | |
164 | $(multi-objs-m:.o=.s) : modname = $(modname-multi) | |
165 | $(multi-objs-m:.o=.lst) : modname = $(modname-multi) | |
166 | $(multi-objs-y) : modname = $(modname-multi) | |
167 | $(multi-objs-y:.o=.i) : modname = $(modname-multi) | |
168 | $(multi-objs-y:.o=.s) : modname = $(modname-multi) | |
169 | $(multi-objs-y:.o=.lst) : modname = $(modname-multi) | |
170 | ||
171 | quiet_cmd_cc_s_c = CC $(quiet_modtag) $@ | |
598e2d33 | 172 | cmd_cc_s_c = $(CC) $(c_flags) $(DISABLE_LTO) -fverbose-asm -S -o $@ $< |
22433fc5 MY |
173 | |
174 | $(obj)/%.s: $(src)/%.c FORCE | |
175 | $(call if_changed_dep,cc_s_c) | |
176 | ||
177 | quiet_cmd_cc_i_c = CPP $(quiet_modtag) $@ | |
178 | cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $< | |
179 | ||
180 | $(obj)/%.i: $(src)/%.c FORCE | |
181 | $(call if_changed_dep,cc_i_c) | |
182 | ||
183 | cmd_gensymtypes = \ | |
184 | $(CPP) -D__GENKSYMS__ $(c_flags) $< | \ | |
185 | $(GENKSYMS) $(if $(1), -T $(2)) \ | |
186 | $(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \ | |
187 | $(if $(KBUILD_PRESERVE),-p) \ | |
188 | -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null)) | |
189 | ||
190 | quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@ | |
191 | cmd_cc_symtypes_c = \ | |
192 | set -e; \ | |
193 | $(call cmd_gensymtypes,true,$@) >/dev/null; \ | |
194 | test -s $@ || rm -f $@ | |
195 | ||
196 | $(obj)/%.symtypes : $(src)/%.c FORCE | |
197 | $(call cmd,cc_symtypes_c) | |
198 | ||
199 | # C (.c) files | |
200 | # The C file is compiled and updated dependency information is generated. | |
201 | # (See cmd_cc_o_c + relevant part of rule_cc_o_c) | |
202 | ||
203 | quiet_cmd_cc_o_c = CC $(quiet_modtag) $@ | |
204 | ||
205 | ifndef CONFIG_MODVERSIONS | |
206 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
207 | ||
208 | else | |
209 | # When module versioning is enabled the following steps are executed: | |
210 | # o compile a .tmp_<file>.o from <file>.c | |
211 | # o if .tmp_<file>.o doesn't contain a __ksymtab version, i.e. does | |
212 | # not export symbols, we just rename .tmp_<file>.o to <file>.o and | |
213 | # are done. | |
214 | # o otherwise, we calculate symbol versions using the good old | |
215 | # genksyms on the preprocessed source and postprocess them in a way | |
216 | # that they are usable as a linker script | |
217 | # o generate <file>.o from .tmp_<file>.o using the linker to | |
218 | # replace the unresolved symbols __crc_exported_symbol with | |
219 | # the actual value of the checksum generated by genksyms | |
220 | ||
221 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $< | |
222 | cmd_modversions = \ | |
223 | if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \ | |
224 | $(call cmd_gensymtypes,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \ | |
225 | > $(@D)/.tmp_$(@F:.o=.ver); \ | |
226 | \ | |
227 | $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \ | |
228 | -T $(@D)/.tmp_$(@F:.o=.ver); \ | |
229 | rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \ | |
230 | else \ | |
231 | mv -f $(@D)/.tmp_$(@F) $@; \ | |
232 | fi; | |
233 | endif | |
234 | ||
235 | ifdef CONFIG_FTRACE_MCOUNT_RECORD | |
236 | ifdef BUILD_C_RECORDMCOUNT | |
237 | ifeq ("$(origin RECORDMCOUNT_WARN)", "command line") | |
238 | RECORDMCOUNT_FLAGS = -w | |
239 | endif | |
240 | # Due to recursion, we must skip empty.o. | |
241 | # The empty.o file is created in the make process in order to determine | |
242 | # the target endianness and word size. It is made before all other C | |
243 | # files, including recordmcount. | |
244 | sub_cmd_record_mcount = \ | |
245 | if [ $(@) != "scripts/mod/empty.o" ]; then \ | |
246 | $(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) "$(@)"; \ | |
247 | fi; | |
248 | recordmcount_source := $(srctree)/scripts/recordmcount.c \ | |
249 | $(srctree)/scripts/recordmcount.h | |
250 | else | |
251 | sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ | |
252 | "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \ | |
253 | "$(if $(CONFIG_64BIT),64,32)" \ | |
254 | "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \ | |
255 | "$(LD)" "$(NM)" "$(RM)" "$(MV)" \ | |
256 | "$(if $(part-of-module),1,0)" "$(@)"; | |
257 | recordmcount_source := $(srctree)/scripts/recordmcount.pl | |
258 | endif | |
98bd0e0d MY |
259 | cmd_record_mcount = \ |
260 | if [ "$(findstring $(CC_FLAGS_FTRACE),$(_c_flags))" = \ | |
261 | "$(CC_FLAGS_FTRACE)" ]; then \ | |
22433fc5 MY |
262 | $(sub_cmd_record_mcount) \ |
263 | fi; | |
264 | endif | |
265 | ||
266 | define rule_cc_o_c | |
267 | $(call echo-cmd,checksrc) $(cmd_checksrc) \ | |
268 | $(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \ | |
269 | $(cmd_modversions) \ | |
270 | $(call echo-cmd,record_mcount) \ | |
271 | $(cmd_record_mcount) \ | |
272 | scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \ | |
273 | $(dot-target).tmp; \ | |
274 | rm -f $(depfile); \ | |
275 | mv -f $(dot-target).tmp $(dot-target).cmd | |
276 | endef | |
277 | ||
278 | # Built-in and composite module parts | |
279 | $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE | |
280 | $(call cmd,force_checksrc) | |
281 | $(call if_changed_rule,cc_o_c) | |
282 | ||
283 | # Single-part modules are special since we need to mark them in $(MODVERDIR) | |
284 | ||
285 | $(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE | |
286 | $(call cmd,force_checksrc) | |
287 | $(call if_changed_rule,cc_o_c) | |
288 | @{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod) | |
289 | ||
290 | quiet_cmd_cc_lst_c = MKLST $@ | |
291 | cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \ | |
292 | $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \ | |
293 | System.map $(OBJDUMP) > $@ | |
294 | ||
295 | $(obj)/%.lst: $(src)/%.c FORCE | |
296 | $(call if_changed_dep,cc_lst_c) | |
297 | ||
298 | # Compile assembler sources (.S) | |
299 | # --------------------------------------------------------------------------- | |
300 | ||
301 | modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL) | |
302 | ||
303 | $(real-objs-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE) | |
304 | $(real-objs-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE) | |
305 | ||
306 | quiet_cmd_as_s_S = CPP $(quiet_modtag) $@ | |
45f0ad95 | 307 | cmd_as_s_S = $(CPP) $(a_flags) -o $@ $< |
22433fc5 MY |
308 | |
309 | $(obj)/%.s: $(src)/%.S FORCE | |
310 | $(call if_changed_dep,as_s_S) | |
311 | ||
312 | quiet_cmd_as_o_S = AS $(quiet_modtag) $@ | |
313 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | |
314 | ||
315 | $(obj)/%.o: $(src)/%.S FORCE | |
316 | $(call if_changed_dep,as_o_S) | |
317 | ||
318 | targets += $(real-objs-y) $(real-objs-m) $(lib-y) | |
319 | targets += $(extra-y) $(MAKECMDGOALS) $(always) | |
320 | ||
321 | # Linker scripts preprocessor (.lds.S -> .lds) | |
322 | # --------------------------------------------------------------------------- | |
323 | quiet_cmd_cpp_lds_S = LDS $@ | |
324 | cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \ | |
325 | -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< | |
326 | ||
327 | $(obj)/%.lds: $(src)/%.lds.S FORCE | |
328 | $(call if_changed_dep,cpp_lds_S) | |
329 | ||
330 | # ASN.1 grammar | |
331 | # --------------------------------------------------------------------------- | |
332 | quiet_cmd_asn1_compiler = ASN.1 $@ | |
333 | cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \ | |
334 | $(subst .h,.c,$@) $(subst .c,.h,$@) | |
335 | ||
336 | .PRECIOUS: $(objtree)/$(obj)/%-asn1.c $(objtree)/$(obj)/%-asn1.h | |
337 | ||
338 | $(obj)/%-asn1.c $(obj)/%-asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler | |
339 | $(call cmd,asn1_compiler) | |
340 | ||
341 | # Build the compiled-in targets | |
342 | # --------------------------------------------------------------------------- | |
343 | ||
344 | # To build objects in subdirs, we need to descend into the directories | |
345 | $(sort $(subdir-obj-y)): $(subdir-ym) ; | |
346 | ||
347 | # | |
348 | # Rule to compile a set of .o files into one .o file | |
349 | # | |
350 | ifdef builtin-target | |
351 | quiet_cmd_link_o_target = LD $@ | |
352 | # If the list of objects to link is empty, just create an empty built-in.o | |
353 | cmd_link_o_target = $(if $(strip $(obj-y)),\ | |
354 | $(LD) $(ld_flags) -r -o $@ $(filter $(obj-y), $^) \ | |
355 | $(cmd_secanalysis),\ | |
356 | rm -f $@; $(AR) rcs$(KBUILD_ARFLAGS) $@) | |
357 | ||
358 | $(builtin-target): $(obj-y) FORCE | |
359 | $(call if_changed,link_o_target) | |
360 | ||
361 | targets += $(builtin-target) | |
362 | endif # builtin-target | |
363 | ||
364 | # | |
365 | # Rule to create modules.order file | |
366 | # | |
367 | # Create commands to either record .ko file or cat modules.order from | |
368 | # a subdirectory | |
369 | modorder-cmds = \ | |
370 | $(foreach m, $(modorder), \ | |
371 | $(if $(filter %/modules.order, $m), \ | |
372 | cat $m;, echo kernel/$m;)) | |
373 | ||
374 | $(modorder-target): $(subdir-ym) FORCE | |
375 | $(Q)(cat /dev/null; $(modorder-cmds)) > $@ | |
376 | ||
377 | # | |
378 | # Rule to compile a set of .o files into one .a file | |
379 | # | |
380 | ifdef lib-target | |
381 | quiet_cmd_link_l_target = AR $@ | |
382 | cmd_link_l_target = rm -f $@; $(AR) rcs$(KBUILD_ARFLAGS) $@ $(lib-y) | |
383 | ||
384 | $(lib-target): $(lib-y) FORCE | |
385 | $(call if_changed,link_l_target) | |
386 | ||
387 | targets += $(lib-target) | |
388 | endif | |
389 | ||
390 | # | |
391 | # Rule to link composite objects | |
392 | # | |
393 | # Composite objects are specified in kbuild makefile as follows: | |
394 | # <composite-object>-objs := <list of .o files> | |
395 | # or | |
396 | # <composite-object>-y := <list of .o files> | |
397 | link_multi_deps = \ | |
398 | $(filter $(addprefix $(obj)/, \ | |
399 | $($(subst $(obj)/,,$(@:.o=-objs))) \ | |
400 | $($(subst $(obj)/,,$(@:.o=-y)))), $^) | |
45f0ad95 | 401 | |
22433fc5 MY |
402 | quiet_cmd_link_multi-y = LD $@ |
403 | cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secanalysis) | |
404 | ||
405 | quiet_cmd_link_multi-m = LD [M] $@ | |
406 | cmd_link_multi-m = $(cmd_link_multi-y) | |
407 | ||
cb6e7b0d | 408 | $(multi-used-y): FORCE |
22433fc5 | 409 | $(call if_changed,link_multi-y) |
cb6e7b0d | 410 | $(call multi_depend, $(multi-used-y), .o, -objs -y) |
22433fc5 | 411 | |
cb6e7b0d | 412 | $(multi-used-m): FORCE |
22433fc5 MY |
413 | $(call if_changed,link_multi-m) |
414 | @{ echo $(@:.o=.ko); echo $(link_multi_deps); } > $(MODVERDIR)/$(@F:.o=.mod) | |
cb6e7b0d | 415 | $(call multi_depend, $(multi-used-m), .o, -objs -y) |
22433fc5 MY |
416 | |
417 | targets += $(multi-used-y) $(multi-used-m) | |
418 | ||
419 | ||
420 | # Descending | |
421 | # --------------------------------------------------------------------------- | |
422 | ||
423 | PHONY += $(subdir-ym) | |
424 | $(subdir-ym): | |
425 | $(Q)$(MAKE) $(build)=$@ | |
426 | ||
427 | # Add FORCE to the prequisites of a target to force it to be always rebuilt. | |
428 | # --------------------------------------------------------------------------- | |
429 | ||
430 | PHONY += FORCE | |
431 | ||
432 | FORCE: | |
433 | ||
434 | # Read all saved command lines and dependencies for the $(targets) we | |
435 | # may be building above, using $(if_changed{,_dep}). As an | |
436 | # optimization, we don't need to read them if the target does not | |
437 | # exist, we will rebuild anyway in that case. | |
438 | ||
439 | targets := $(wildcard $(sort $(targets))) | |
440 | cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
441 | ||
442 | ifneq ($(cmd_files),) | |
443 | include $(cmd_files) | |
444 | endif | |
445 | ||
446 | # Declare the contents of the .PHONY variable as phony. We keep that | |
447 | # information in a variable se we can use it in if_changed and friends. | |
448 | ||
449 | .PHONY: $(PHONY) |