2 # Licensed under LGPL v2.1, see the file COPYING.LIB in this tarball for details.
5 .SUFFIXES: .c .S .o .os .oS .so .a .s .i
9 .PHONY: dummy $(PHONY) subdirs \
10 all check test $(clean_targets) \
11 config dist menuconfig oldconfig release \
14 # order is important, the stripping uses STRIP_FLAGS for lib-so, but not for lib-a
15 ifeq ($(HAVE_SHARED),y)
16 .LIBPATTERNS: "lib%.so"
17 libs: $(lib-so-y) $(lib-a-y)
18 $(lib-so-y): | $(interp)
20 .LIBPATTERNS: "lib%.a"
21 ifeq ($(UCLIBC_FORMAT_SHARED_FLAT),y)
25 $(lib-a-y): | $(top_builddir)lib
29 shared_objs = $(libc-y:.o=.os) $(libc-shared-y) $(libc-nonshared-y) \
30 $(libcrypt-so-y) $(libdl-so-y) \
31 $(libintl-so-y) $(libm-so-y) $(libnsl-so-y) \
32 $(libpthread-so-y) $(libpthread-nonshared-y) $(libthread_db-so-y) \
33 $(libresolv-so-y) $(librt-so-y) \
37 ar_objs = $(libc-y) $(libc-static-y) $(libcrypt-a-y) \
38 $(libdl-a-y) $(libintl-a-y) $(libm-a-y) $(libnsl-a-y) \
39 $(libpthread-a-y) $(libthread_db-a-y) \
40 $(libresolv-a-y) $(librt-a-y) $(libutil-a-y)
42 ar_objs := $(ar_objs:.o=.os)
44 flat_objs = $(lib-gdb-y)
46 ifeq ($(HAVE_SHARED),y)
47 all_objs: $(sort $(shared_objs) $(ar_objs))
51 $(shared_objs) $(ar_objs): | $(sub_headers)
53 headers-y: $(headers-y)
56 MAKEFLAGS += --no-print-directory
59 $(shell $(CONFIG_SHELL) $(top_srcdir)/extra/scripts/relative_path.sh $(@D) .)
61 ifneq ($(findstring -s,$(MAKEFLAGS)),)
62 export MAKE_IS_SILENT := y
67 export MAKE_IS_SILENT := n
69 ifneq ($(V)$(VERBOSE),)
79 show_objs = $(subst $(top_builddir),,$(subst ../,,$@))
81 pur_disp_compile.c = echo " "CC $(show_objs)
82 pur_disp_compile.i = echo " "CPP $(show_objs)
83 pur_disp_compile.s = echo " "CC-S $(show_objs)
84 pur_disp_compile.u = echo " "CC $(show_objs)
85 pur_disp_compile.S = echo " "AS $(show_objs)
86 pur_disp_compile.m = $(pur_disp_compile.c)
87 pur_disp_compile.mi= echo " "CPP-m $(show_objs)
88 pur_disp_compile-m = echo " "CC-m $(show_objs)
89 pur_disp_hcompile.u= echo " "HOSTCC $(show_objs)
90 pur_disp_hcompile.o= echo " "HOSTCC-o $(show_objs)
91 pur_disp_strip = echo " "STRIP $(STRIP_FLAGS) $@
92 pur_disp_t_strip = echo " "STRIP $(STRIP_FLAGS) $@
93 pur_disp_ar = echo " "AR $(ARFLAGS) $@
94 pur_disp_ld = echo " "LD $(1)
95 pur_disp_ln = echo " "LN $(show_objs)
96 pur_disp_mkdir = echo " "MKDIR $(show_objs)
97 pur_disp_gen = echo " "GEN $(show_objs)
98 pur_disp_install = echo " "INSTALL $(1)
99 pur_disp_unifdef = echo " "UNIFDEF $(show_objs)
100 pur_disp_rm = echo " "CLEAN $(subst CLEAN_,,$(patsubst HEADERCLEAN_%,include \(%\),$@))
102 sil_disp_compile.c = true
103 sil_disp_compile.i = true
104 sil_disp_compile.s = true
105 sil_disp_compile.u = true
106 sil_disp_compile.S = true
107 sil_disp_compile.m = true
108 sil_disp_compile.mi= true
109 sil_disp_compile-m = true
110 sil_disp_hcompile.u= true
111 sil_disp_hcompile.o= true
112 sil_disp_strip = true
113 sil_disp_t_strip = true
117 sil_disp_mkdir = true
119 sil_disp_install = true
120 sil_disp_unifdef = true
123 ver_disp_compile.c = echo $(cmd_compile.c)
124 ver_disp_compile.i = echo $(cmd_compile.i)
125 ver_disp_compile.s = echo $(cmd_compile.s)
126 ver_disp_compile.u = echo $(cmd_compile.u)
127 ver_disp_compile.S = echo $(cmd_compile.S)
128 ver_disp_compile.m = echo $(cmd_compile.m)
129 ver_disp_compile.mi= echo $(cmd_compile.mi)
130 ver_disp_compile-m = echo $(cmd_compile-m)
131 ver_disp_hcompile.u= echo $(cmd_hcompile.u)
132 ver_disp_hcompile.o= echo $(cmd_hcompile.o)
133 ver_disp_strip = echo $(cmd_strip)
134 ver_disp_t_strip = echo $(cmd_t_strip)
135 ver_disp_ar = echo $(cmd_ar)
141 ver_disp_unifdef = echo $(cmd_unifdef)
144 disp_compile.c = $($(DISP)_disp_compile.c)
145 disp_compile.i = $($(DISP)_disp_compile.i)
146 disp_compile.s = $($(DISP)_disp_compile.s)
147 disp_compile.u = $($(DISP)_disp_compile.u)
148 disp_compile.S = $($(DISP)_disp_compile.S)
149 disp_compile.m = $($(DISP)_disp_compile.m)
150 disp_compile.mi= $($(DISP)_disp_compile.mi)
151 disp_compile-m = $($(DISP)_disp_compile-m)
152 disp_hcompile.u= $($(DISP)_disp_hcompile.u)
153 disp_hcompile.o= $($(DISP)_disp_hcompile.o)
154 disp_strip = $($(DISP)_disp_strip)
155 disp_t_strip = $($(DISP)_disp_t_strip)
156 disp_ar = $($(DISP)_disp_ar)
157 disp_ld = $($(DISP)_disp_ld)
158 disp_ln = $($(DISP)_disp_ln)
159 disp_mkdir = $($(DISP)_disp_mkdir)
160 disp_gen = $($(DISP)_disp_gen)
161 disp_install = $($(DISP)_disp_install)
162 disp_unifdef = $($(DISP)_disp_unifdef)
163 disp_rm = $($(DISP)_disp_rm)
165 any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
167 # ../foo/bar/baz.ext -> foo_bar_baz.ext
168 variablify = $(subst /,_,$(subst $(top_builddir),,$(1)))
169 # strip the top_builddir off everything to make the *string* idempotent for -C
170 dirify = $(subst $(top_builddir),,$(patsubst -L$(top_builddir)%,-L%,$(patsubst -I$(top_builddir)%,-I%,$(1))))
172 # True if not identical. Neither order nor whitespace nor identical flags
175 $(strip $(filter-out $(call dirify,$(cmd_$(call variablify,$(1)))), \
176 $(call dirify,$(cmd_$(call variablify,$(@))))) \
177 $(filter-out $(call dirify,$(cmd_$(call variablify,$(@)))), \
178 $(call dirify,$(cmd_$(call variablify,$(1))))))
180 # Rebuild if any prerequisite, the used CC or flags changed.
181 # Previously used flags are stored in the corresponding .%.dep files
183 $(if $(strip $(compare_flags) $(any-prereq)), \
187 echo 'cmd_$(call variablify,$@) := $(call dirify,$(cmd_$(call variablify,$1)))' >> $(dir $@).$(notdir $@).dep)
189 # collect flags of domulti prereqs
190 #collect_multi_flags = $(CFLAGS-$(notdir $(d))) $(CFLAGS-$(notdir $(patsubst %/,%,$(dir $(d)))))
191 collect_multi_flags = $(CFLAGS-$(notdir $(patsubst %/,%,$(dir $(d)))))
193 CFLAGS_gen.dep = -MT $@ -MD -MP -MF $(dir $@).$(notdir $@).dep
195 cmd_compile.c = $(CC) -c $< -o $@ $(CFLAGS) \
196 $(CFLAGS-$(suffix $@)) \
197 $(filter-out $(CFLAGS-OMIT-$(notdir $<)),$(CFLAGS-$(notdir $(<D)))) \
198 $(CFLAGS-$(subst $(top_srcdir),,$(dir $<))) \
199 $(CFLAGS-$(notdir $<)) \
200 $(CFLAGS-$(notdir $@)) \
202 cmd_compile.i = $(cmd_compile.c:-c=-E -dD $(EXTRA_CPPFLAGS))
203 cmd_compile.s = $(cmd_compile.c:-c=-S)
204 cmd_compile.u = $(CC) $^ $(DEPS-$(notdir $@)) -o $@ $(CFLAGS) $(CFLAGS-$(notdir $(^D))) $(CFLAGS-$(notdir $@)) $(CFLAGS_gen.dep)
205 cmd_compile.S = $(filter-out -std=gnu99, $(cmd_compile.c)) -D__ASSEMBLER__ $(ASFLAGS) $(ARCH_ASFLAGS) $(ASFLAGS-$(suffix $@)) $(ASFLAGS-$(notdir $<)) $(ASFLAGS-$(notdir $@))
206 cmd_compile.m = $(cmd_compile.c) -DL_$(patsubst %$(suffix $(notdir $@)),%,$(notdir $@))
207 cmd_compile.mi= $(cmd_compile.m:-c=-E -dD $(EXTRA_CPPFLAGS))
209 cmd_compile-m = $(CC) $^ -c -o $@ $(CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(notdir $(@D))) $(CFLAGS-$(notdir $@)) $(sort $(foreach d,$(^:$(top_srcdir)=),$(collect_multi_flags)))
210 cmd_strip = $(STRIPTOOL) $(STRIP_FLAGS) $^
211 cmd_t_strip = $(STRIPTOOL) $(STRIP_FLAGS) $@
212 cmd_ar = $(AR) $(ARFLAGS) $@ $^
239 compile.c = @$(call maybe_exec,compile.c)
240 compile.i = $(call maybe_exec,compile.i)
241 compile.s = $(call maybe_exec,compile.s)
242 compile.S = @$(call maybe_exec,compile.S)
243 compile.m = @$(call maybe_exec,compile.m)
244 compile.mi= $(call maybe_exec,compile.mi)
245 compile-m = @$(disp_compile-m) ; $(cmd_compile-m) && $(cmd_t_strip)
246 do_strip = @$(disp_strip) ; $(cmd_strip)
247 do_t_strip= @$(disp_t_strip) ; $(cmd_t_strip)
248 do_unifdef= @$(disp_unifdef) ; $(cmd_unifdef)
249 hcompile.u= @$(disp_hcompile.u); $(cmd_hcompile.u)
250 hcompile.o= @$(disp_hcompile.o); $(cmd_hcompile.o)
253 @$(disp_ar) ; $(cmd_ar)
257 @$(disp_compile.u) ; $(cmd_compile.u)
260 cmd_hcompile.u = $(HOSTCC) $(filter-out $(PHONY),$^) $(DEPS-$(notdir $@)) -o $@ $(BUILD_LDFLAGS) $(BUILD_LDFLAGS-$(notdir $(^D))) $(BUILD_LDFLAGS-$(notdir $@)) $(BUILD_CFLAGS) $(BUILD_CFLAGS-$(notdir $(^D))) $(BUILD_CFLAGS-$(notdir $@))
261 cmd_hcompile.o = $(HOSTCC) $(filter-out $(PHONY),$<) $(DEPS-$(notdir $@)) -c -o $@ $(BUILD_CFLAGS) $(BUILD_CFLAGS-$(notdir $(^D))) $(BUILD_CFLAGS-$(notdir $@))
264 $(Q)$(RM) $@ $@.$(2) $(dir $@)$(1)
266 $(Q)$(CC) $(LDFLAGS-$(notdir $@)) -Wl,-soname=$(notdir $@).$(2) \
267 $(NOSTDLIB_CFLAGS) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) \
268 -Wl,--whole-archive $(firstword $^) -Wl,--no-whole-archive \
269 $(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@))
270 $(Q)$(LN) -sf $(1) $@.$(2)
271 $(Q)$(LN) -sf $(1) $@
274 # CRT files needed by link-flat.so
275 LINK_FLAT_CRTS := $(top_builddir)lib/Scrt1.o $(top_builddir)lib/crti.o \
276 $(top_builddir)lib/crtn.o
278 # Create a shared flat library from the archive named by the first dependency.
279 # $@ names the shared library's .gdb file, not the flat file itself.
280 # (This is because the .gdb suffix makes the ELF file more distinctive
281 # than the suffixless flat file.)
283 # Argument 1 is the shared library file -- i.e. $(@:.gdb=) -- and argument 2
284 # is the shared library identifier. If it wasn't for $(disp_ld), we could
285 # avoid passing $(@:.gdb=) as an argument and use $(@:.gdb=) instead of $(1).
287 # This is so far only used for libc, for which we want to link the entire
288 # libgcc into the shared object.
292 $(Q)$(CC) $(LDFLAGS-$(notdir $@)) $(NOSTDLIB_CFLAGS) -o $(1) \
293 -Wl,-elf2flt -Wl,-shared-lib-id,$(2) $(top_builddir)lib/Scrt1.o \
294 $(top_builddir)/lib/crti.o -Wl,--whole-archive $(firstword $^) \
295 $(LIBGCC) -Wl,--no-whole-archive $(LIBS-$(notdir $@)) $(LIBGCC) \
296 $(top_builddir)/lib/crtn.o
300 $(Q)$(RM) $@ $@.$(2) $(dir $@)$(1)
303 $(Q)$(CC) $(LDFLAGS-$(notdir $@)) -Wl,-soname=$(notdir $@).$(2) \
304 $(NOSTDLIB_CFLAGS) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) \
306 $(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@))
307 $(Q)$(LN) -sf $(1) $@.$(2)
308 $(Q)$(LN) -sf $(1) $@
311 CFLAGS-.os+=$(PICFLAG)
312 CFLAGS-.oS+=$(PICFLAG) -DSHARED
314 $(top_builddir)%.o: $(top_srcdir)%.c FORCE ; $(compile.c)
315 $(top_builddir)%.os: $(top_srcdir)%.c FORCE | pregen; $(compile.c)
316 $(top_builddir)%.oS: $(top_srcdir)%.c FORCE | pregen; $(compile.c)
317 $(top_builddir)%.o: $(top_srcdir)%.S FORCE ; $(compile.S)
318 $(top_builddir)%.os: $(top_srcdir)%.S FORCE | pregen; $(compile.S)
319 $(top_builddir)%.oS: $(top_srcdir)%.S FORCE | pregen; $(compile.S)
320 $(top_builddir)%.o: $(top_srcdir)%.s FORCE ; $(compile.S)
321 $(top_builddir)%.os: $(top_srcdir)%.s FORCE ; $(compile.S)
322 $(top_builddir)%.oS: $(top_srcdir)%.s FORCE | pregen; $(compile.S)
323 $(top_builddir)%.i: $(top_srcdir)%.c FORCE | pregen; $(compile.i)
324 $(top_builddir)%.i: $(top_srcdir)%.S FORCE | pregen; $(compile.i)
325 $(top_builddir)%.s: $(top_srcdir)%.c FORCE | pregen; $(compile.s)
326 $(top_builddir)%.s: $(top_srcdir)%.S FORCE | pregen; $(compile.s)
327 $(top_builddir)%.dep:
329 $(top_builddir)lib/interp.c: | $(sub_headers) $(top_builddir)lib
330 $(Q)echo "/* Force shared libraries to know about the correct library loader */" > $@.tmp
331 $(Q)echo "#include <features.h>" >> $@.tmp
332 $(Q)echo "const char __dl_ldso__[] attribute_hidden __attribute__ ((weak)) __attribute__ ((section " \
333 "(\".interp\"))) =\""$(RUNTIME_PREFIX)$(MULTILIB_DIR)/$(UCLIBC_LDSO)"\";" >> $@.tmp
336 $(interp): $(top_builddir)lib/interp.c
338 $(Q)$(STRIPTOOL) -x -R .note -R .comment $@
341 @cd $(top_builddir); $(MAKE) lib/$(patsubst %.$(ABI_VERSION),%,$(notdir $@))
344 @cd $(top_builddir); $(MAKE) lib/$(patsubst %.$(ABI_VERSION),%,$(notdir $@))
348 ifeq ($(HAVE_SHARED)$(UCLIBC_FORMAT_SHARED_FLAT),y)
349 CRTS=$(top_builddir)lib/$(CRT).o $(top_builddir)lib/S$(CRT).o
351 CRTS=$(top_builddir)lib/$(CRT).o
354 ASFLAGS-$(CRT).o := -DL_$(CRT)
355 ASFLAGS-S$(CRT).o := $(PIEFLAG) -DL_S$(CRT)
356 $(CRTS): $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/$(CRT).S
358 $(Q)$(STRIPTOOL) -x -R .note -R .comment $@
360 ifeq ($(UCLIBC_CTOR_DTOR),y)
361 CTOR_TARGETS=$(top_builddir)lib/crti.o $(top_builddir)lib/crtn.o
366 ifeq ($(UCLIBC_FORMAT_FDPIC_ELF),y)
367 CRTRELOC=$(top_builddir)lib/crtreloc.o
368 $(CRTRELOC): $(top_builddir)lib/%.o : $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/%.c
372 ifneq ($(wildcard $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/initfini.c),)
373 CFLAGS-initfini.s := -S -g0 $(PICFLAG) -fno-inline-functions -finhibit-size-directive
374 $(top_builddir)lib/initfini.s: $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/initfini.c | $(top_builddir)lib
377 $(top_builddir)lib/defs.h: $(top_builddir)lib/initfini.s | $(top_builddir)lib
378 $(Q)sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \
379 gawk -f $(top_srcdir)extra/scripts/defs.awk > $@.tmp
382 $(top_builddir)lib/crti.S: $(top_builddir)lib/initfini.s $(top_builddir)lib/defs.h
383 $(Q)sed -n -e '1,/@HEADER_ENDS/p' \
384 -e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
385 -e '/@TRAILER_BEGINS/,$$p' $< > $@
387 $(top_builddir)lib/crtn.S: $(top_builddir)lib/initfini.s
388 $(Q)sed -n -e '1,/@HEADER_ENDS/p' \
389 -e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \
390 -e '/@TRAILER_BEGINS/,$$p' $< > $@
392 $(CTOR_TARGETS): $(top_builddir)lib/%.o : $(top_builddir)lib/%.S
393 $(compile.S) $(PICFLAG) $(SSP_DISABLE_FLAGS)
395 $(CTOR_TARGETS): $(top_builddir)lib/%.o : $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/%.S
396 $(compile.S) $(PICFLAG) $(SSP_DISABLE_FLAGS)
399 #ifeq ($(TARGET_ARCH),nios)
400 #CRTS_COMPAT := $(top_builddir)lib/crt0.o
402 # ln -fs crt1.o $(top_builddir)lib/crt0.o
407 $(crt-y): $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC)
408 $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC): | headers
409 $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC) $(LINK_FLAT_CRTS) $(SHARED_START_FILES) $(SHARED_END_FILES) : | $(top_builddir)lib
411 $(top_builddir)lib/$(NONSHARED_LIBNAME): $(libc-nonshared-y)
415 $(top_builddir)lib/libpthread_nonshared.a: $(libpthread-nonshared-y)
419 files.dep := $(libc-a-y) $(libc-so-y) $(libc-nonshared-y) \
420 $(libm-a-y) $(libm-so-y) \
421 $(libpthread-a-y) $(libpthread-so-y) $(libpthread-nonshared-y) \
422 $(libthread_db-a-y) $(libthread_db-so-y) \
423 $(librt-a-y) $(librt-so-y) $(libresolv-a-y) $(libresolv-so-y) \
424 $(libcrypt-a-y) $(libcrypt-so-y) $(libutil-a-y) $(libutil-so-y) \
425 $(libnsl-a-y) $(libnsl-so-y) $(ldso-y) $(libdl-a-y) $(libdl-so-y)
427 $(patsubst %.o,%.o.dep,$(filter %.o,$(files.dep))) \
428 $(patsubst %.os,%.os.dep,$(filter %.os,$(files.dep))) \
429 $(patsubst %.oS,%.oS.dep,$(filter %.oS,$(files.dep)))
430 # Oh, and prepend a dot to the basename so i don't have to change my habit of
431 # calling 'size thefile.o*'
432 .depends.dep := $(foreach f,$(.depends.dep),$(dir $(f)).$(notdir $(f)))
433 .depends.dep := $(wildcard $(.depends.dep))
437 clean: objclean-y headers_clean-y
438 realclean: clean menuconfig-clean-y
439 $(Q)$(RM) $(.depends.dep)
441 objclean-y: $(objclean-y)
442 headers_clean-y: $(headers_clean-y)
444 ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
445 ifneq ($(strip $(.depends.dep)),)
447 -include $(.depends.dep)