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) \
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)
28 shared_objs = $(libc-y:.o=.os) $(libc-shared-y) $(libc-nonshared-y) \
29 $(libcrypt-so-y) $(libdl-so-y) \
30 $(libintl-so-y) $(libm-so-y) $(libnsl-so-y) \
31 $(libpthread-so-y) $(libpthread-nonshared-y) $(libthread_db-so-y) \
32 $(libresolv-so-y) $(librt-so-y) \
36 ar_objs = $(libc-y) $(libc-static-y) $(libcrypt-a-y) \
37 $(libdl-a-y) $(libintl-a-y) $(libm-a-y) $(libnsl-a-y) \
38 $(libpthread-a-y) $(libthread_db-a-y) \
39 $(libresolv-a-y) $(librt-a-y) $(libutil-a-y)
41 ar_objs := $(ar_objs:.o=.os)
43 flat_objs = $(lib-gdb-y)
45 ifeq ($(HAVE_SHARED),y)
46 all_objs: $(sort $(shared_objs) $(ar_objs))
50 $(shared_objs) $(ar_objs): | $(sub_headers)
52 headers-y: $(headers-y)
55 MAKEFLAGS += --no-print-directory
57 ifneq ($(findstring s,$(MAKEFLAGS)),)
58 export MAKE_IS_SILENT := y
63 export MAKE_IS_SILENT := n
65 ifneq ($(V)$(VERBOSE),)
75 show_objs = $(subst ../,,$@)
77 pur_disp_compile.c = echo " "CC $(show_objs)
78 pur_disp_compile.i = echo " "CPP $(show_objs)
79 pur_disp_compile.s = echo " "CC-S $(show_objs)
80 pur_disp_compile.u = echo " "CC $(show_objs)
81 pur_disp_compile.S = echo " "AS $(show_objs)
82 pur_disp_compile.m = $(pur_disp_compile.c)
83 pur_disp_compile.mi= echo " "CPP-m $(show_objs)
84 pur_disp_compile-m = echo " "CC-m $(show_objs)
85 pur_disp_hcompile.u= echo " "HOSTCC $(show_objs)
86 pur_disp_hcompile.o= echo " "HOSTCC-o $(show_objs)
87 pur_disp_strip = echo " "STRIP $(STRIP_FLAGS) $@
88 pur_disp_t_strip = echo " "STRIP $(STRIP_FLAGS) $@
89 pur_disp_ar = echo " "AR $(ARFLAGS) $@
90 pur_disp_ld = echo " "LD $(1)
91 pur_disp_ln = echo " "LN $@
92 pur_disp_mkdir = echo " "MKDIR $@
93 pur_disp_gen = echo " "GEN $@
94 pur_disp_unifdef = echo " "UNIFDEF $@
95 pur_disp_rm = echo " "CLEAN $(@:_clean=)
97 sil_disp_compile.c = true
98 sil_disp_compile.i = true
99 sil_disp_compile.s = true
100 sil_disp_compile.u = true
101 sil_disp_compile.S = true
102 sil_disp_compile.m = true
103 sil_disp_compile.mi= true
104 sil_disp_compile-m = true
105 sil_disp_hcompile.u= true
106 sil_disp_hcompile.o= true
107 sil_disp_strip = true
108 sil_disp_t_strip = true
112 sil_disp_mkdir = true
114 sil_disp_unifdef = true
117 ver_disp_compile.c = echo $(cmd_compile.c)
118 ver_disp_compile.i = echo $(cmd_compile.i)
119 ver_disp_compile.s = echo $(cmd_compile.s)
120 ver_disp_compile.u = echo $(cmd_compile.u)
121 ver_disp_compile.S = echo $(cmd_compile.S)
122 ver_disp_compile.m = echo $(cmd_compile.m)
123 ver_disp_compile.mi= echo $(cmd_compile.mi)
124 ver_disp_compile-m = echo $(cmd_compile-m)
125 ver_disp_hcompile.u= echo $(cmd_hcompile.u)
126 ver_disp_hcompile.o= echo $(cmd_hcompile.o)
127 ver_disp_strip = echo $(cmd_strip)
128 ver_disp_t_strip = echo $(cmd_t_strip)
129 ver_disp_ar = echo $(cmd_ar)
134 ver_disp_unifdef = echo $(cmd_unifdef)
137 disp_compile.c = $($(DISP)_disp_compile.c)
138 disp_compile.i = $($(DISP)_disp_compile.i)
139 disp_compile.s = $($(DISP)_disp_compile.s)
140 disp_compile.u = $($(DISP)_disp_compile.u)
141 disp_compile.S = $($(DISP)_disp_compile.S)
142 disp_compile.m = $($(DISP)_disp_compile.m)
143 disp_compile.mi= $($(DISP)_disp_compile.mi)
144 disp_compile-m = $($(DISP)_disp_compile-m)
145 disp_hcompile.u= $($(DISP)_disp_hcompile.u)
146 disp_hcompile.o= $($(DISP)_disp_hcompile.o)
147 disp_strip = $($(DISP)_disp_strip)
148 disp_t_strip = $($(DISP)_disp_t_strip)
149 disp_ar = $($(DISP)_disp_ar)
150 disp_ld = $($(DISP)_disp_ld)
151 disp_ln = $($(DISP)_disp_ln)
152 disp_mkdir = $($(DISP)_disp_mkdir)
153 disp_gen = $($(DISP)_disp_gen)
154 disp_unifdef = $($(DISP)_disp_unifdef)
155 disp_rm = $($(DISP)_disp_rm)
157 any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
159 # ../foo/bar/baz.ext -> foo_bar_baz.ext
160 variablify = $(subst /,_,$(subst $(top_builddir),,$(1)))
161 # strip the top_builddir off everything to make the *string* idempotent for -C
162 dirify = $(subst $(top_builddir),,$(patsubst -L$(top_builddir)%,-L%,$(patsubst -I$(top_builddir)%,-I%,$(1))))
164 # True if not identical. Neither order nor whitespace nor identical flags
167 $(strip $(filter-out $(call dirify,$(cmd_$(call variablify,$(1)))), \
168 $(call dirify,$(cmd_$(call variablify,$(@))))) \
169 $(filter-out $(call dirify,$(cmd_$(call variablify,$(@)))), \
170 $(call dirify,$(cmd_$(call variablify,$(1))))))
172 # Rebuild if any prerequisite, the used CC or flags changed.
173 # Previously used flags are stored in the corresponding .%.dep files
175 $(if $(strip $(compare_flags) $(any-prereq)), \
179 echo 'cmd_$(call variablify,$@) := $(call dirify,$(cmd_$(call variablify,$1)))' >> $(dir $@).$(notdir $@).dep)
182 CFLAGS_gen.dep = -MT $@ -MD -MP -MF $(dir $@).$(notdir $@).dep
184 cmd_compile.c = $(CC) -c $< -o $@ $(CFLAGS) $(ARCH_CFLAGS) \
185 $(CFLAGS-$(suffix $@)) \
186 $(filter-out $(CFLAGS-OMIT-$(notdir $<)),$(CFLAGS-$(notdir $(<D)))) \
187 $(CFLAGS-$(subst $(top_srcdir),,$(dir $<))) \
188 $(CFLAGS-$(notdir $<)) \
189 $(CFLAGS-$(notdir $@)) \
191 cmd_compile.i = $(cmd_compile.c:-c=-E -dD $(EXTRA_CPPFLAGS))
192 cmd_compile.s = $(cmd_compile.c:-c=-S)
193 cmd_compile.u = $(CC) $^ $(DEPS-$(notdir $@)) -o $@ $(CFLAGS) $(CFLAGS-$(notdir $(^D))) $(CFLAGS-$(notdir $@)) $(CFLAGS_gen.dep)
194 cmd_compile.S = $(filter-out -std=gnu99, $(cmd_compile.c)) -D__ASSEMBLER__ $(ASFLAGS) $(ARCH_ASFLAGS) $(ASFLAGS-$(suffix $@)) $(ASFLAGS-$(notdir $<)) $(ASFLAGS-$(notdir $@))
195 cmd_compile.m = $(cmd_compile.c) -DL_$(patsubst %$(suffix $(notdir $@)),%,$(notdir $@))
196 cmd_compile.mi= $(cmd_compile.m:-c=-E -dD $(EXTRA_CPPFLAGS))
198 cmd_compile-m = $(CC) $^ -c -o $@ $(CFLAGS) $(ARCH_CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(notdir $(@D))) $(CFLAGS-$(notdir $@))
199 cmd_strip = $(STRIPTOOL) $(STRIP_FLAGS) $^
200 cmd_t_strip = $(STRIPTOOL) $(STRIP_FLAGS) $@
201 cmd_ar = $(AR) $(ARFLAGS) $@ $^
219 compile.c = @$(call maybe_exec,compile.c)
220 compile.i = $(call maybe_exec,compile.i)
221 compile.s = $(call maybe_exec,compile.s)
222 compile.S = @$(call maybe_exec,compile.S)
223 compile.m = @$(call maybe_exec,compile.m)
224 compile.mi= $(call maybe_exec,compile.mi)
225 compile-m = @$(disp_compile-m) ; $(cmd_compile-m) && $(cmd_t_strip)
226 do_strip = @$(disp_strip) ; $(cmd_strip)
227 do_t_strip= @$(disp_t_strip) ; $(cmd_t_strip)
228 do_unifdef= @$(disp_unifdef) ; $(cmd_unifdef)
229 hcompile.u= @$(disp_hcompile.u); $(cmd_hcompile.u)
230 hcompile.o= @$(disp_hcompile.o); $(cmd_hcompile.o)
233 @$(disp_ar) ; $(cmd_ar)
237 @$(disp_compile.u) ; $(cmd_compile.u)
240 cmd_hcompile.u = $(HOSTCC) $^ $(DEPS-$(notdir $@)) -o $@ $(BUILD_LDFLAGS) $(BUILD_LDFLAGS-$(notdir $(^D))) $(BUILD_LDFLAGS-$(notdir $@)) $(BUILD_CFLAGS) $(BUILD_CFLAGS-$(notdir $(^D))) $(BUILD_CFLAGS-$(notdir $@))
241 cmd_hcompile.o = $(HOSTCC) $^ $(DEPS-$(notdir $@)) -c -o $@ $(BUILD_CFLAGS) $(BUILD_CFLAGS-$(notdir $(^D))) $(BUILD_CFLAGS-$(notdir $@))
244 $(Q)$(INSTALL) -d $(dir $@)
245 $(Q)$(RM) $@ $@.$(2) $(dir $@)$(1)
247 $(Q)$(CC) $(LDFLAGS-$(notdir $@)) -Wl,-soname=$(notdir $@).$(2) \
248 $(NOSTDLIB_CFLAGS) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) \
249 -Wl,--whole-archive $(firstword $^) -Wl,--no-whole-archive \
250 $(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@))
251 $(Q)$(LN) -sf $(1) $@.$(2)
252 $(Q)$(LN) -sf $(1) $@
255 # CRT files needed by link-flat.so
256 LINK_FLAT_CRTS := $(top_builddir)lib/Scrt1.o $(top_builddir)lib/crti.o \
257 $(top_builddir)lib/crtn.o
259 # Create a shared flat library from the archive named by the first dependency.
260 # $@ names the shared library's .gdb file, not the flat file itself.
261 # (This is because the .gdb suffix makes the ELF file more distinctive
262 # than the suffixless flat file.)
264 # Argument 1 is the shared library file -- i.e. $(@:.gdb=) -- and argument 2
265 # is the shared library identifier. If it wasn't for $(disp_ld), we could
266 # avoid passing $(@:.gdb=) as an argument and use $(@:.gdb=) instead of $(1).
268 # This is so far only used for libc, for which we want to link the entire
269 # libgcc into the shared object.
271 $(Q)$(INSTALL) -d $(dir $@)
274 $(Q)$(CC) $(LDFLAGS-$(notdir $@)) $(NOSTDLIB_CFLAGS) -o $(1) \
275 -Wl,-elf2flt -Wl,-shared-lib-id,$(2) $(top_builddir)lib/Scrt1.o \
276 $(top_builddir)/lib/crti.o -Wl,--whole-archive $(firstword $^) \
277 $(LIBGCC) -Wl,--no-whole-archive $(LIBS-$(notdir $@)) $(LIBGCC) \
278 $(top_builddir)/lib/crtn.o
282 $(Q)$(INSTALL) -d $(dir $@)
283 $(Q)$(RM) $@ $@.$(2) $(dir $@)$(1)
286 $(Q)$(CC) $(LDFLAGS-$(notdir $@)) -Wl,-soname=$(notdir $@).$(2) \
287 $(NOSTDLIB_CFLAGS) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) \
289 $(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@))
290 $(Q)$(LN) -sf $(1) $@.$(2)
291 $(Q)$(LN) -sf $(1) $@
294 CFLAGS-.os+=$(PICFLAG)
295 CFLAGS-.oS+=$(PICFLAG) -DSHARED
297 %.o: %.c FORCE ; $(compile.c)
298 %.os: %.c FORCE ; $(compile.c)
299 %.oS: %.c FORCE ; $(compile.c)
300 %.o: %.S FORCE ; $(compile.S)
301 %.os: %.S FORCE ; $(compile.S)
302 %.oS: %.S FORCE ; $(compile.S)
303 %.o: %.s FORCE ; $(compile.S)
304 %.os: %.s FORCE ; $(compile.S)
305 %.oS: %.s FORCE ; $(compile.S)
306 %.i: %.c FORCE ; $(compile.i)
307 %.i: %.S FORCE ; $(compile.i)
308 %.s: %.c FORCE ; $(compile.s)
309 %.s: %.S FORCE ; $(compile.s)
312 $(top_builddir)lib/interp.c: | $(sub_headers)
313 $(Q)$(INSTALL) -d $(dir $@)
314 $(Q)echo "/* Force shared libraries to know about the correct library loader */" > $@
315 $(Q)echo "#include <features.h>" >> $@
316 $(Q)echo "const char __dl_ldso__[] attribute_hidden __attribute__ ((weak)) __attribute__ ((section " \
317 "(\".interp\"))) =\""$(SHARED_LIB_LOADER_PREFIX)/$(UCLIBC_LDSO)"\";" >> $@
319 $(interp): $(top_builddir)lib/interp.c
321 $(Q)$(STRIPTOOL) -x -R .note -R .comment $@
324 @cd $(top_builddir); $(MAKE) lib/$(patsubst %.$(MAJOR_VERSION),%,$(notdir $@))
327 @cd $(top_builddir); $(MAKE) lib/$(patsubst %.$(MAJOR_VERSION),%,$(notdir $@))
331 ifeq ($(HAVE_SHARED)$(UCLIBC_FORMAT_SHARED_FLAT),y)
332 CRTS=$(top_builddir)lib/$(CRT).o $(top_builddir)lib/S$(CRT).o
334 CRTS=$(top_builddir)lib/$(CRT).o
337 ASFLAGS-$(CRT).o := -DL_$(CRT)
338 ASFLAGS-S$(CRT).o := $(PIEFLAG) -DL_S$(CRT)
339 $(CRTS): $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/$(CRT).S
340 $(Q)$(INSTALL) -d $(dir $@)
342 $(Q)$(STRIPTOOL) -x -R .note -R .comment $@
344 ifeq ($(UCLIBC_CTOR_DTOR),y)
345 CTOR_TARGETS=$(top_builddir)lib/crti.o $(top_builddir)lib/crtn.o
350 ifeq ($(UCLIBC_FORMAT_FDPIC_ELF),y)
351 CRTRELOC=$(top_builddir)lib/crtreloc.o
352 $(CRTRELOC): $(top_builddir)lib/%.o : $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/%.c
353 $(Q)$(INSTALL) -d $(dir $@)
357 ifneq ($(wildcard $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/initfini.c),)
358 CFLAGS-initfini.s := -S -g0 $(PICFLAG) -fno-inline-functions -finhibit-size-directive
359 $(top_builddir)lib/initfini.s: $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/initfini.c
362 $(top_builddir)lib/defs.h: $(top_builddir)lib/initfini.s
363 $(Q)sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \
364 gawk -f $(top_srcdir)extra/scripts/defs.awk > $@.tmp
367 $(top_builddir)lib/crti.S: $(top_builddir)lib/initfini.s $(top_builddir)lib/defs.h
368 $(Q)sed -n -e '1,/@HEADER_ENDS/p' \
369 -e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
370 -e '/@TRAILER_BEGINS/,$$p' $< > $@
372 $(top_builddir)lib/crtn.S: $(top_builddir)lib/initfini.s
373 $(Q)sed -n -e '1,/@HEADER_ENDS/p' \
374 -e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \
375 -e '/@TRAILER_BEGINS/,$$p' $< > $@
377 $(CTOR_TARGETS): $(top_builddir)lib/%.o : $(top_builddir)lib/%.S
378 $(Q)$(INSTALL) -d $(dir $@)
379 $(compile.S) $(PICFLAG) $(SSP_DISABLE_FLAGS)
381 $(CTOR_TARGETS): $(top_builddir)lib/%.o : $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/%.S
382 $(Q)$(INSTALL) -d $(dir $@)
383 $(compile.S) $(PICFLAG) $(SSP_DISABLE_FLAGS)
386 #ifeq ($(TARGET_ARCH),nios)
387 #CRTS_COMPAT := $(top_builddir)lib/crt0.o
389 # ln -fs crt1.o $(top_builddir)lib/crt0.o
394 $(crt-y): $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC)
395 $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC): | headers
397 $(top_builddir)lib/$(NONSHARED_LIBNAME): $(libc-nonshared-y)
398 $(Q)$(INSTALL) -d $(dir $@)
402 $(top_builddir)lib/libpthread_nonshared.a: $(libpthread-nonshared-y)
403 $(Q)$(INSTALL) -d $(dir $@)
407 files.dep := $(libc-a-y) $(libc-so-y) $(libc-nonshared-y) \
408 $(libm-a-y) $(libm-so-y) \
409 $(libpthread-a-y) $(libpthread-so-y) $(libpthread-nonshared-y) \
410 $(libthread_db-a-y) $(libthread_db-so-y) \
411 $(librt-a-y) $(librt-so-y) $(libresolv-a-y) $(libresolv-so-y) \
412 $(libcrypt-a-y) $(libcrypt-so-y) $(libutil-a-y) $(libutil-so-y) \
413 $(libnsl-a-y) $(libnsl-so-y) $(ldso-y) $(libdl-a-y) $(libdl-so-y)
415 $(patsubst %.o,%.o.dep,$(filter %.o,$(files.dep))) \
416 $(patsubst %.os,%.os.dep,$(filter %.os,$(files.dep))) \
417 $(patsubst %.oS,%.oS.dep,$(filter %.oS,$(files.dep)))
418 # Oh, and prepend a dot to the basename so i don't have to change my habit of
419 # calling 'size thefile.o*'
420 .depends.dep := $(foreach f,$(.depends.dep),$(dir $(f)).$(notdir $(f)))
421 .depends.dep := $(wildcard $(.depends.dep))
425 clean: objclean-y headers_clean-y
427 $(Q)$(RM) $(.depends.dep)
429 objclean-y: $(objclean-y)
430 headers_clean-y: $(headers_clean-y)
432 ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
433 ifneq ($(strip $(.depends.dep)),)
435 -include $(.depends.dep)