diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /scripts/Makefile.build |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'scripts/Makefile.build')
-rw-r--r-- | scripts/Makefile.build | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build new file mode 100644 index 00000000000..352d531ee3c --- /dev/null +++ b/scripts/Makefile.build | |||
@@ -0,0 +1,330 @@ | |||
1 | # ========================================================================== | ||
2 | # Building | ||
3 | # ========================================================================== | ||
4 | |||
5 | src := $(obj) | ||
6 | |||
7 | .PHONY: __build | ||
8 | __build: | ||
9 | |||
10 | # Read .config if it exist, otherwise ignore | ||
11 | -include .config | ||
12 | |||
13 | include $(if $(wildcard $(obj)/Kbuild), $(obj)/Kbuild, $(obj)/Makefile) | ||
14 | |||
15 | include scripts/Makefile.lib | ||
16 | |||
17 | ifdef host-progs | ||
18 | ifneq ($(hostprogs-y),$(host-progs)) | ||
19 | $(warning kbuild: $(obj)/Makefile - Usage of host-progs is deprecated. Please replace with hostprogs-y!) | ||
20 | hostprogs-y += $(host-progs) | ||
21 | endif | ||
22 | endif | ||
23 | |||
24 | # Do not include host rules unles needed | ||
25 | ifneq ($(hostprogs-y)$(hostprogs-m),) | ||
26 | include scripts/Makefile.host | ||
27 | endif | ||
28 | |||
29 | ifneq ($(KBUILD_SRC),) | ||
30 | # Create output directory if not already present | ||
31 | _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj)) | ||
32 | |||
33 | # Create directories for object files if directory does not exist | ||
34 | # Needed when obj-y := dir/file.o syntax is used | ||
35 | _dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d))) | ||
36 | endif | ||
37 | |||
38 | |||
39 | ifdef EXTRA_TARGETS | ||
40 | $(warning kbuild: $(obj)/Makefile - Usage of EXTRA_TARGETS is obsolete in 2.6. Please fix!) | ||
41 | endif | ||
42 | |||
43 | ifdef build-targets | ||
44 | $(warning kbuild: $(obj)/Makefile - Usage of build-targets is obsolete in 2.6. Please fix!) | ||
45 | endif | ||
46 | |||
47 | ifdef export-objs | ||
48 | $(warning kbuild: $(obj)/Makefile - Usage of export-objs is obsolete in 2.6. Please fix!) | ||
49 | endif | ||
50 | |||
51 | ifdef O_TARGET | ||
52 | $(warning kbuild: $(obj)/Makefile - Usage of O_TARGET := $(O_TARGET) is obsolete in 2.6. Please fix!) | ||
53 | endif | ||
54 | |||
55 | ifdef L_TARGET | ||
56 | $(error kbuild: $(obj)/Makefile - Use of L_TARGET is replaced by lib-y in 2.6. Please fix!) | ||
57 | endif | ||
58 | |||
59 | ifdef list-multi | ||
60 | $(warning kbuild: $(obj)/Makefile - list-multi := $(list-multi) is obsolete in 2.6. Please fix!) | ||
61 | endif | ||
62 | |||
63 | ifndef obj | ||
64 | $(warning kbuild: Makefile.build is included improperly) | ||
65 | endif | ||
66 | |||
67 | # =========================================================================== | ||
68 | |||
69 | ifneq ($(strip $(lib-y) $(lib-m) $(lib-n) $(lib-)),) | ||
70 | lib-target := $(obj)/lib.a | ||
71 | endif | ||
72 | |||
73 | ifneq ($(strip $(obj-y) $(obj-m) $(obj-n) $(obj-) $(lib-target)),) | ||
74 | builtin-target := $(obj)/built-in.o | ||
75 | endif | ||
76 | |||
77 | # We keep a list of all modules in $(MODVERDIR) | ||
78 | |||
79 | __build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \ | ||
80 | $(if $(KBUILD_MODULES),$(obj-m)) \ | ||
81 | $(subdir-ym) $(always) | ||
82 | @: | ||
83 | |||
84 | # Linus' kernel sanity checking tool | ||
85 | ifneq ($(KBUILD_CHECKSRC),0) | ||
86 | ifeq ($(KBUILD_CHECKSRC),2) | ||
87 | quiet_cmd_force_checksrc = CHECK $< | ||
88 | cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ; | ||
89 | else | ||
90 | quiet_cmd_checksrc = CHECK $< | ||
91 | cmd_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ; | ||
92 | endif | ||
93 | endif | ||
94 | |||
95 | |||
96 | # Compile C sources (.c) | ||
97 | # --------------------------------------------------------------------------- | ||
98 | |||
99 | # Default is built-in, unless we know otherwise | ||
100 | modkern_cflags := $(CFLAGS_KERNEL) | ||
101 | quiet_modtag := $(empty) $(empty) | ||
102 | |||
103 | $(real-objs-m) : modkern_cflags := $(CFLAGS_MODULE) | ||
104 | $(real-objs-m:.o=.i) : modkern_cflags := $(CFLAGS_MODULE) | ||
105 | $(real-objs-m:.o=.s) : modkern_cflags := $(CFLAGS_MODULE) | ||
106 | $(real-objs-m:.o=.lst): modkern_cflags := $(CFLAGS_MODULE) | ||
107 | |||
108 | $(real-objs-m) : quiet_modtag := [M] | ||
109 | $(real-objs-m:.o=.i) : quiet_modtag := [M] | ||
110 | $(real-objs-m:.o=.s) : quiet_modtag := [M] | ||
111 | $(real-objs-m:.o=.lst): quiet_modtag := [M] | ||
112 | |||
113 | $(obj-m) : quiet_modtag := [M] | ||
114 | |||
115 | # Default for not multi-part modules | ||
116 | modname = $(*F) | ||
117 | |||
118 | $(multi-objs-m) : modname = $(modname-multi) | ||
119 | $(multi-objs-m:.o=.i) : modname = $(modname-multi) | ||
120 | $(multi-objs-m:.o=.s) : modname = $(modname-multi) | ||
121 | $(multi-objs-m:.o=.lst) : modname = $(modname-multi) | ||
122 | $(multi-objs-y) : modname = $(modname-multi) | ||
123 | $(multi-objs-y:.o=.i) : modname = $(modname-multi) | ||
124 | $(multi-objs-y:.o=.s) : modname = $(modname-multi) | ||
125 | $(multi-objs-y:.o=.lst) : modname = $(modname-multi) | ||
126 | |||
127 | quiet_cmd_cc_s_c = CC $(quiet_modtag) $@ | ||
128 | cmd_cc_s_c = $(CC) $(c_flags) -S -o $@ $< | ||
129 | |||
130 | %.s: %.c FORCE | ||
131 | $(call if_changed_dep,cc_s_c) | ||
132 | |||
133 | quiet_cmd_cc_i_c = CPP $(quiet_modtag) $@ | ||
134 | cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $< | ||
135 | |||
136 | %.i: %.c FORCE | ||
137 | $(call if_changed_dep,cc_i_c) | ||
138 | |||
139 | # C (.c) files | ||
140 | # The C file is compiled and updated dependency information is generated. | ||
141 | # (See cmd_cc_o_c + relevant part of rule_cc_o_c) | ||
142 | |||
143 | quiet_cmd_cc_o_c = CC $(quiet_modtag) $@ | ||
144 | |||
145 | ifndef CONFIG_MODVERSIONS | ||
146 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | ||
147 | |||
148 | else | ||
149 | # When module versioning is enabled the following steps are executed: | ||
150 | # o compile a .tmp_<file>.o from <file>.c | ||
151 | # o if .tmp_<file>.o doesn't contain a __ksymtab version, i.e. does | ||
152 | # not export symbols, we just rename .tmp_<file>.o to <file>.o and | ||
153 | # are done. | ||
154 | # o otherwise, we calculate symbol versions using the good old | ||
155 | # genksyms on the preprocessed source and postprocess them in a way | ||
156 | # that they are usable as a linker script | ||
157 | # o generate <file>.o from .tmp_<file>.o using the linker to | ||
158 | # replace the unresolved symbols __crc_exported_symbol with | ||
159 | # the actual value of the checksum generated by genksyms | ||
160 | |||
161 | cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $< | ||
162 | cmd_modversions = \ | ||
163 | if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \ | ||
164 | $(CPP) -D__GENKSYMS__ $(c_flags) $< \ | ||
165 | | $(GENKSYMS) \ | ||
166 | > $(@D)/.tmp_$(@F:.o=.ver); \ | ||
167 | \ | ||
168 | $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \ | ||
169 | -T $(@D)/.tmp_$(@F:.o=.ver); \ | ||
170 | rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \ | ||
171 | else \ | ||
172 | mv $(@D)/.tmp_$(@F) $@; \ | ||
173 | fi; | ||
174 | endif | ||
175 | |||
176 | define rule_cc_o_c | ||
177 | $(if $($(quiet)cmd_checksrc),echo ' $($(quiet)cmd_checksrc)';) \ | ||
178 | $(cmd_checksrc) \ | ||
179 | $(if $($(quiet)cmd_cc_o_c),echo ' $($(quiet)cmd_cc_o_c)';) \ | ||
180 | $(cmd_cc_o_c); \ | ||
181 | $(cmd_modversions) \ | ||
182 | scripts/basic/fixdep $(depfile) $@ '$(cmd_cc_o_c)' > $(@D)/.$(@F).tmp; \ | ||
183 | rm -f $(depfile); \ | ||
184 | mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd | ||
185 | endef | ||
186 | |||
187 | # Built-in and composite module parts | ||
188 | |||
189 | %.o: %.c FORCE | ||
190 | $(call cmd,force_checksrc) | ||
191 | $(call if_changed_rule,cc_o_c) | ||
192 | |||
193 | # Single-part modules are special since we need to mark them in $(MODVERDIR) | ||
194 | |||
195 | $(single-used-m): %.o: %.c FORCE | ||
196 | $(call cmd,force_checksrc) | ||
197 | $(call if_changed_rule,cc_o_c) | ||
198 | @{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod) | ||
199 | |||
200 | quiet_cmd_cc_lst_c = MKLST $@ | ||
201 | cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \ | ||
202 | $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \ | ||
203 | System.map $(OBJDUMP) > $@ | ||
204 | |||
205 | %.lst: %.c FORCE | ||
206 | $(call if_changed_dep,cc_lst_c) | ||
207 | |||
208 | # Compile assembler sources (.S) | ||
209 | # --------------------------------------------------------------------------- | ||
210 | |||
211 | modkern_aflags := $(AFLAGS_KERNEL) | ||
212 | |||
213 | $(real-objs-m) : modkern_aflags := $(AFLAGS_MODULE) | ||
214 | $(real-objs-m:.o=.s): modkern_aflags := $(AFLAGS_MODULE) | ||
215 | |||
216 | quiet_cmd_as_s_S = CPP $(quiet_modtag) $@ | ||
217 | cmd_as_s_S = $(CPP) $(a_flags) -o $@ $< | ||
218 | |||
219 | %.s: %.S FORCE | ||
220 | $(call if_changed_dep,as_s_S) | ||
221 | |||
222 | quiet_cmd_as_o_S = AS $(quiet_modtag) $@ | ||
223 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | ||
224 | |||
225 | %.o: %.S FORCE | ||
226 | $(call if_changed_dep,as_o_S) | ||
227 | |||
228 | targets += $(real-objs-y) $(real-objs-m) $(lib-y) | ||
229 | targets += $(extra-y) $(MAKECMDGOALS) $(always) | ||
230 | |||
231 | # Linker scripts preprocessor (.lds.S -> .lds) | ||
232 | # --------------------------------------------------------------------------- | ||
233 | quiet_cmd_cpp_lds_S = LDS $@ | ||
234 | cmd_cpp_lds_S = $(CPP) $(cpp_flags) -D__ASSEMBLY__ -o $@ $< | ||
235 | |||
236 | %.lds: %.lds.S FORCE | ||
237 | $(call if_changed_dep,cpp_lds_S) | ||
238 | |||
239 | # Build the compiled-in targets | ||
240 | # --------------------------------------------------------------------------- | ||
241 | |||
242 | # To build objects in subdirs, we need to descend into the directories | ||
243 | $(sort $(subdir-obj-y)): $(subdir-ym) ; | ||
244 | |||
245 | # | ||
246 | # Rule to compile a set of .o files into one .o file | ||
247 | # | ||
248 | ifdef builtin-target | ||
249 | quiet_cmd_link_o_target = LD $@ | ||
250 | # If the list of objects to link is empty, just create an empty built-in.o | ||
251 | cmd_link_o_target = $(if $(strip $(obj-y)),\ | ||
252 | $(LD) $(ld_flags) -r -o $@ $(filter $(obj-y), $^),\ | ||
253 | rm -f $@; $(AR) rcs $@) | ||
254 | |||
255 | $(builtin-target): $(obj-y) FORCE | ||
256 | $(call if_changed,link_o_target) | ||
257 | |||
258 | targets += $(builtin-target) | ||
259 | endif # builtin-target | ||
260 | |||
261 | # | ||
262 | # Rule to compile a set of .o files into one .a file | ||
263 | # | ||
264 | ifdef lib-target | ||
265 | quiet_cmd_link_l_target = AR $@ | ||
266 | cmd_link_l_target = rm -f $@; $(AR) $(EXTRA_ARFLAGS) rcs $@ $(lib-y) | ||
267 | |||
268 | $(lib-target): $(lib-y) FORCE | ||
269 | $(call if_changed,link_l_target) | ||
270 | |||
271 | targets += $(lib-target) | ||
272 | endif | ||
273 | |||
274 | # | ||
275 | # Rule to link composite objects | ||
276 | # | ||
277 | # Composite objects are specified in kbuild makefile as follows: | ||
278 | # <composite-object>-objs := <list of .o files> | ||
279 | # or | ||
280 | # <composite-object>-y := <list of .o files> | ||
281 | link_multi_deps = \ | ||
282 | $(filter $(addprefix $(obj)/, \ | ||
283 | $($(subst $(obj)/,,$(@:.o=-objs))) \ | ||
284 | $($(subst $(obj)/,,$(@:.o=-y)))), $^) | ||
285 | |||
286 | quiet_cmd_link_multi-y = LD $@ | ||
287 | cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) | ||
288 | |||
289 | quiet_cmd_link_multi-m = LD [M] $@ | ||
290 | cmd_link_multi-m = $(LD) $(ld_flags) $(LDFLAGS_MODULE) -o $@ $(link_multi_deps) | ||
291 | |||
292 | # We would rather have a list of rules like | ||
293 | # foo.o: $(foo-objs) | ||
294 | # but that's not so easy, so we rather make all composite objects depend | ||
295 | # on the set of all their parts | ||
296 | $(multi-used-y) : %.o: $(multi-objs-y) FORCE | ||
297 | $(call if_changed,link_multi-y) | ||
298 | |||
299 | $(multi-used-m) : %.o: $(multi-objs-m) FORCE | ||
300 | $(call if_changed,link_multi-m) | ||
301 | @{ echo $(@:.o=.ko); echo $(link_multi_deps); } > $(MODVERDIR)/$(@F:.o=.mod) | ||
302 | |||
303 | targets += $(multi-used-y) $(multi-used-m) | ||
304 | |||
305 | |||
306 | # Descending | ||
307 | # --------------------------------------------------------------------------- | ||
308 | |||
309 | .PHONY: $(subdir-ym) | ||
310 | $(subdir-ym): | ||
311 | $(Q)$(MAKE) $(build)=$@ | ||
312 | |||
313 | # Add FORCE to the prequisites of a target to force it to be always rebuilt. | ||
314 | # --------------------------------------------------------------------------- | ||
315 | |||
316 | .PHONY: FORCE | ||
317 | |||
318 | FORCE: | ||
319 | |||
320 | # Read all saved command lines and dependencies for the $(targets) we | ||
321 | # may be building above, using $(if_changed{,_dep}). As an | ||
322 | # optimization, we don't need to read them if the target does not | ||
323 | # exist, we will rebuild anyway in that case. | ||
324 | |||
325 | targets := $(wildcard $(sort $(targets))) | ||
326 | cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | ||
327 | |||
328 | ifneq ($(cmd_files),) | ||
329 | include $(cmd_files) | ||
330 | endif | ||