1 # Copyright (C) 1991-2002,2003,2004,2005,2006 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with the GNU C Library; if not, write to the Free
16 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # Common rules for making the GNU C library. This file is included
21 # by the top-level Makefile and by all subdirectory makefiles
25 This makefile requires GNU Make.
28 REQUIRED_MAKE_VERSION = 3.74
29 REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))
31 ifneq ($(REQUIRED_MAKE_VERSION), \
32 $(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
33 Wrong GNU Make version. See above for the version needed.
41 # If `sources' was defined by the parent makefile, undefine it so
42 # we will later get it from wildcard search in this directory.
43 ifneq "$(findstring env,$(origin sources))" ""
48 PATH := this definition should take precedence over $(oPATH)
49 ifeq ($(PATH),$(oPATH))
50 You must not use the -e flag when building the GNU C library.
55 ifndef +included-Makeconfig
56 include $(..)Makeconfig
59 # `configure' writes a definition of `config-sysdirs' in `config.make'.
60 sysdirs = $(strip $(full_config_sysdirs))
62 +sysdir_pfx = $(common-objpfx)
64 export sysdirs := $(sysdirs)
66 +sysdep_dirs := $(full_config_sysdirs)
68 +sysdep_dirs := $(objdir) $(+sysdep_dirs)
71 # Add -I switches to get the right sysdep directories.
72 # `+includes' in Makeconfig references $(+sysdep-includes).
73 +sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
75 # This variable is used in ``include $(o-iterator)'' after defining
76 # $(o-iterator-doit) to produce some desired rule using $o for the object
77 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
78 # is produced for each object suffix in use.
79 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
81 # Include any system-specific makefiles.
83 # This is here so things in sysdep Makefiles can easily depend on foo.h as
84 # appropriate and not worry about where foo.h comes from, which may be
85 # system dependent and not known by that Makefile.
86 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
87 $(+sysdep_dirs) $(..)))
89 # The same is true for RPC source files.
90 vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
91 $(+sysdep_dirs) $(..)))
93 # Some sysdep makefiles use this to distinguish being included here from
94 # being included individually by a subdir makefile (hurd/Makefile needs this).
97 sysdep-makefiles := $(wildcard $(full_config_sysdirs:=/Makefile))
98 ifneq (,$(sysdep-makefiles))
99 include $(sysdep-makefiles)
103 # Reorder before-compile so that mach things come first, and hurd things
104 # second, before all else. The mach and hurd subdirectories have many
105 # generated header files which the much of rest of the library depends on,
106 # so it is best to build them first (and mach before hurd, at that).
107 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
109 $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
112 # Even before that, we need abi-versions.h which is generated right here.
113 ifeq ($(versioning),yes)
114 ifndef avoid-generated
115 before-compile := $(common-objpfx)abi-versions.h $(before-compile)
116 $(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
117 $(common-objpfx)Versions.all
118 LC_ALL=C $(AWK) -v oldest_abi=$(oldest-abi) -f $^ > $@T
121 $(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
122 sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
123 $(common-objpfx)abi-versions.h > $@T
125 endif # avoid-generated
126 endif # $(versioning) = yes
128 # Make sure the subdirectory for object files gets created.
130 ifeq (,$(wildcard $(objpfx).))
131 before-compile += $(objpfx).
133 $(make-target-directory)
137 # Remove existing files from `before-compile'. Things are added there when
138 # they must exist for dependency generation to work right, but once they
139 # exist there is no further need for every single file to depend on them,
140 # and those gratuitous dependencies result in many gratuitous
142 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
144 # Don't let any before-compile file be an intermediate and get removed.
149 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
152 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
154 common-before-compile = $(before-compile)
158 # If a makefile needs to do something conditional on something that
159 # can only be figured out from headers, write a FOO.make.c input
160 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
161 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
163 # We only generate these in the top-level makefile, to avoid any weirdness
164 # from subdir-specific makefile tweaks creeping in on an update.
165 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
167 (echo '# Generated from $*.make.c by Makerules.'; \
168 $(CC) $(CFLAGS) $(CPPFLAGS) -E $< \
169 -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
170 | sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \
171 echo 'common-generated += $(@F)'; \
172 sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
178 sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g' \
179 -e 's@^\.\.\/\([^ \]*\)@$$(..)\1@g'
181 sed-remove-dotdot := -e 's@ *\([^ \/$$][^ \]*\)@ $$(..)\1@g' \
182 -e 's@^\([^ \/$$][^ \]*\)@$$(..)\1@g'
186 ifdef gen-as-const-headers
187 # Generating headers for assembly constants.
188 # We need this defined early to get into before-compile before
189 # it's used in sysd-rules, below.
190 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
191 %.sym $(common-before-compile)
192 $(AWK) -f $< $(filter %.sym,$^) \
193 | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
194 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
195 sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
196 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
198 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
199 $(@:.h=.h.d)T > $(@:.h=.h.d)T2
201 mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
202 mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
203 vpath %.sym $(sysdirs)
204 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
206 tests += $(gen-as-const-headers:%.sym=test-as-const-%)
207 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
208 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
209 %.sym $(common-objpfx)%.h
210 ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
211 $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
212 echo '#include "$(..)test-skeleton.c"') > $@T
216 # Generate an ordered list of implicit rules which find the source files in
217 # each sysdep directory. The old method was to use vpath to search all the
218 # sysdep directories. However, that had the problem that a .S file in a
219 # later directory would be chosen over a .c file in an earlier directory,
220 # which does not preserve the desired sysdeps ordering behavior.
222 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
223 # patterns matching sysdep directories whose assembly source files should
225 ifdef inhibit-sysdep-asm
226 define open-check-inhibit-asm
227 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
229 close-check-inhibit-asm = ;; esac ;
232 -include $(+sysdir_pfx)sysd-rules
233 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
234 # The value of $(+sysdep_dirs) the sysd-rules was computed for
235 # differs from the one we are using now. So force a rebuild of sysd-rules.
236 sysd-rules-force = FORCE
239 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
240 $(wildcard $(foreach dir,$(sysdirs),\
244 (echo 'sysd-rules-sysdirs := $(config-sysdirs)'; \
245 for dir in $(config-sysdirs:%='$$(..)%'); do \
246 for o in $(all-object-suffixes); do \
247 $(open-check-inhibit-asm) \
248 echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
249 \$$(compile-command.S)"; \
250 echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
251 \$$(compile-command.s)"; \
252 echo "\$$(objpfx)rtld-%$$o: $$dir/%.S \$$(before-compile); \
253 \$$(compile-command.S)"; \
254 echo "\$$(objpfx)rtld-%$$o: $$dir/%.s \$$(before-compile); \
255 \$$(compile-command.s)"; \
256 echo "\$$(objpfx)ptw-%$$o: $$dir/%.S \$$(before-compile); \
257 \$$(compile-command.S)"; \
258 echo "\$$(objpfx)ptw-%$$o: $$dir/%.s \$$(before-compile); \
259 \$$(compile-command.s)"; \
260 echo "\$$(objpfx)m_%$$o: $$dir/s_%.S \$$(before-compile); \
261 \$$(compile-command.S)"; \
262 echo "\$$(objpfx)m_%$$o: $$dir/s_%.s \$$(before-compile); \
263 \$$(compile-command.s)"; \
264 $(close-check-inhibit-asm) \
265 echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
266 \$$(compile-command.c)"; \
267 echo "\$$(objpfx)rtld-%$$o: $$dir/%.c \$$(before-compile); \
268 \$$(compile-command.c)"; \
269 echo "\$$(objpfx)ptw-%$$o: $$dir/%.c \$$(before-compile); \
270 \$$(compile-command.c)"; \
271 echo "\$$(objpfx)m_%$$o: $$dir/s_%.c \$$(before-compile); \
272 \$$(compile-command.c)"; \
274 echo "\$$(inst_includedir)/%.h: $$dir/%.h \$$(+force); \
277 echo 'sysd-rules-done = t') > $@T
280 ifndef sysd-rules-done
281 # Don't do deps until this exists, because it provides rules to make the deps.
285 define o-iterator-doit
286 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
288 object-suffixes-left := $(all-object-suffixes)
289 include $(o-iterator)
291 define o-iterator-doit
292 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
294 object-suffixes-left := $(all-object-suffixes)
295 include $(o-iterator)
297 define o-iterator-doit
298 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
300 object-suffixes-left := $(all-object-suffixes)
301 include $(o-iterator)
303 define o-iterator-doit
304 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
306 object-suffixes-left := $(all-object-suffixes)
307 include $(o-iterator)
309 # Omit the objpfx rules when building in the source tree, because
310 # objpfx is empty and so these rules just override the ones above.
312 # Define first rules to find the source files in $(objpfx).
313 # Generated source files will end up there.
314 define o-iterator-doit
315 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
317 object-suffixes-left := $(all-object-suffixes)
318 include $(o-iterator)
320 define o-iterator-doit
321 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
323 object-suffixes-left := $(all-object-suffixes)
324 include $(o-iterator)
326 define o-iterator-doit
327 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
329 object-suffixes-left := $(all-object-suffixes)
330 include $(o-iterator)
333 # Generate version maps, but wait until sysdep-subdirs is known
334 ifeq ($(sysd-sorted-done),t)
335 ifeq ($(versioning),yes)
336 -include $(common-objpfx)sysd-versions
337 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
338 common-generated += $(version-maps)
339 postclean-generated += sysd-versions Versions.all abi-versions.h \
340 Versions.def.v.i Versions.def.v Versions.v.i Versions.v
342 ifndef avoid-generated
343 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
344 sysd-versions-force = FORCE
347 # See %.v/%.v.i implicit rules in Makeconfig.
348 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
349 $(wildcard $(add-ons:%=$(..)%/Versions.def))
350 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
351 $(common-objpfx)soversions.i \
352 $(common-objpfx)Versions.def.v
353 { while read which lib version setname; do \
354 test x"$$which" = xDEFAULT || continue; \
355 test -z "$$setname" || echo "$$lib : $$setname"; \
356 done < $(word 2,$^); \
358 } | LC_ALL=C $(AWK) -f $< > $@T
360 # See %.v/%.v.i implicit rules in Makeconfig.
361 $(common-objpfx)Versions.v.i: $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
362 $(wildcard $(sysdirs:%=%/Versions)) \
363 $(common-objpfx)abi-versions.h \
364 $(sysd-versions-force)
365 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
366 $(common-objpfx)Versions.v \
367 $(..)scripts/versions.awk
368 ( echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
370 | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
371 -v move_if_change='$(move-if-change)' \
375 endif # avoid-generated
376 endif # $(versioning) = yes
377 endif # sysd-sorted-done
379 # Generate .dT files as we compile.
380 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
381 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
382 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION) $(compile-mkdep-flags)
383 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
384 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
386 # GCC can grok options after the file name, and it looks nicer that way.
387 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
388 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
389 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
390 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
391 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
392 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
393 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
395 # We need this for the output to go in the right place. It will default to
396 # empty if make was configured to work with a cc that can't grok -c and -o
397 # together. You can't compile the C library with such a compiler.
398 OUTPUT_OPTION = -o $@
400 # We need the $(CFLAGS) to be in there to have the right predefines during
401 # the dependency run for C sources. But having it for assembly sources can
402 # get the wrong predefines.
403 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
406 $(make-target-directory)
407 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
408 $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
409 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
410 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
411 mv -f $(@:.d=.T) $@ $(generate-md5)
415 # Continuation lines here are dangerous because they introduce spaces!
416 define sed-remove-objpfx
417 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
418 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
422 # Modify the list of routines we build for different targets
424 ifeq (yesyes,$(build-shared)$(elf))
425 ifndef libc.so-version
426 # Undefine this because it can't work when we libc.so is unversioned.
427 static-only-routines =
431 # Bounded pointer thunks are only built for *.ob
432 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
434 elide-routines.oS += $(filter-out $(static-only-routines),\
435 $(routines) $(aux) $(sysdep_routines)) \
437 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
439 # If we have versioned code we don't need the old versions in any of the
441 elide-routines.o += $(shared-only-routines) $(elide-bp-thunks)
442 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
443 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
444 elide-routines.ob += $(shared-only-routines)
446 # Shared library building.
448 ifeq (yes,$(build-shared))
450 # Reference map file only when versioning is selected and a map file name
452 ifeq ($(versioning),yes)
453 map-file = $(firstword $($(@F:.so=-map)) \
454 $(addprefix $(common-objpfx), \
455 $(filter $(@F:.so=.map),$(version-maps))))
456 load-map-file = $(map-file:%=-Wl,--version-script=%)
459 # Pattern rule to build a shared object from an archive of PIC objects.
460 # This must come after the installation rules so Make doesn't try to
461 # build shared libraries in place from the installed *_pic.a files.
462 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
463 # on other shared objects.
464 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
465 ifneq (,$(findstring aix,$(config-os)))
467 dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
472 define build-shlib-helper
473 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
474 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
475 $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
476 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
477 -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
478 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
479 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
482 ifneq (,$(findstring aix,$(config-os)))
483 define build-shlib-helper
484 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
485 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
486 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
487 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
488 -L$(subst :, -L,$(rpath-link))
495 # binutils only position loadable notes into the first page for binaries,
496 # not for shared objects
497 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
498 $(LINK.o) -shared -Wl,-O1 \
499 -nostdlib -nostartfiles \
500 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
501 -Wl,--verbose 2>&1 | \
503 -e '/^=========/,/^=========/!d;/^=========/d' \
504 -e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
505 -e 's/^.*\*(\.dynbss).*$$/& \
506 PROVIDE(__start___libc_freeres_ptrs = .); \
507 *(__libc_freeres_ptrs) \
508 PROVIDE(__stop___libc_freeres_ptrs = .);/'\
509 -e 's@^.*\*(\.jcr).*$$@& \
510 PROVIDE(__start___libc_subfreeres = .);\
511 __libc_subfreeres : { *(__libc_subfreeres) }\
512 PROVIDE(__stop___libc_subfreeres = .);\
513 PROVIDE(__start___libc_atexit = .);\
514 __libc_atexit : { *(__libc_atexit) }\
515 PROVIDE(__stop___libc_atexit = .);\
516 PROVIDE(__start___libc_thread_subfreeres = .);\
517 __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
518 PROVIDE(__stop___libc_thread_subfreeres = .);\
519 /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
521 common-generated += shlib.lds
524 $(build-shlib-helper) -o $@ -T $(common-objpfx)shlib.lds \
525 $(csu-objpfx)abi-note.o $(build-shlib-objlist)
528 ifneq (,$(findstring aix,$(config-os)))
530 $(build-shlib-helper) \
532 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
533 $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
536 $(build-shlib-helper) \
537 $(build-shlib-objlist)
542 ifneq (,$(findstring aix,$(config-os)))
543 define build-module-helper
544 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
545 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
547 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
548 -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
551 define build-module-helper
552 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
553 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
554 -B$(csu-objpfx) $(load-map-file) \
555 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
556 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
560 # This macro is similar to build-shlib but it does not define a soname
561 # and it does not depend on the destination name to start with `lib'.
563 # binutils only position loadable notes into the first page for binaries,
564 # not for shared objects
566 $(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
567 $(csu-objpfx)abi-note.o $(build-module-objlist)
569 define build-module-asneeded
570 $(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
571 $(csu-objpfx)abi-note.o \
572 -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed
575 ifneq (,$(findstring aix,$(config-os)))
577 $(build-module-helper) \
579 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
580 $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
585 $(build-module-helper) \
587 $(build-module-objlist)
592 build-module-helper-objlist = \
593 $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
594 $(filter-out %.lds $(map-file) $(+preinit) $(+postinit),$^))
595 whole-archive := -Wl,--whole-archive
597 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
598 build-shlib-objlist = $(build-module-helper-objlist) \
599 $(LDLIBS-$(@F:lib%.so=%).so)
601 # Don't try to use -lc when making libc.so itself.
602 # Also omits crti.o and crtn.o, which we do not want
603 # since we define our own `.init' section specially.
604 LDFLAGS-c.so = -nostdlib -nostartfiles
605 # But we still want to link libc.so against $(libc.so-gnulib).
606 LDLIBS-c.so += $(libc.so-gnulib)
607 # Give libc.so an entry point and make it directly runnable itself.
608 LDFLAGS-c.so += -e __libc_main
609 # If lazy relocation is disabled add the -z now flag.
610 ifeq ($(bind-now),yes)
611 LDFLAGS-c.so += -Wl,-z,now
613 # Pre-link the objects of libc_pic.a so that we can locally resolve
614 # COMMON symbols before we link against ld.so. This is because ld.so
615 # contains some of libc_pic.a already, which will prevent the COMMONs
616 # from being allocated in libc.so, which introduces evil dependencies
617 # between libc.so and ld.so, which can make it impossible to upgrade.
619 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
620 $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
621 $(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
622 # Use our own special initializer and finalizer files for libc.so.
623 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
624 $(common-objpfx)libc_pic.os \
625 $(elfobjdir)/sofini.os \
626 $(elfobjdir)/interp.os $(elfobjdir)/ld.so \
627 $(common-objpfx)shlib.lds
629 ifeq ($(versioning),yes)
630 $(common-objpfx)libc.so: $(common-objpfx)libc.map
632 common-generated += libc.so libc_pic.os
633 ifdef libc.so-version
634 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
636 common-generated += libc.so$(libc.so-version)
640 ifneq (,$(findstring aix,$(config-os)))
641 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
644 dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
645 sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
646 /lib/syscalls.exp > $(common-objpfx)syscalls.exp
647 $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
648 -bE:$(common-objpfx)syscalls.exp \
649 -bI:$(common-objpfx)syscalls.exp \
650 -L$(common-objpfx) -o $@ $^
651 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
652 cp $@ $(common-objpfx)shr.o
653 $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
657 # Figure out the source filenames in this directory.
659 override sources := $(addsuffix .c,\
660 $(filter-out $(elided-routines),\
663 sysdep_routines := $(sysdep_routines)
665 headers := $(headers) $(sysdep_headers)
667 # This is the list of all object files, gotten by
668 # replacing every ".c" in `sources' with a ".o".
669 # We also add bounded-pointer thunks, which are later
670 # elided for all suffixes except for `.ob'.
671 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
672 $(patsubst %,$(bppfx)%.o,\
673 $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
676 # The makefile may define $(extra-libs) with `libfoo libbar'
677 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
679 # extra-lib.mk is included once for each extra lib to define rules
680 # to build it, and to add its objects to the various variables.
681 # During its evaluation, $(lib) is set to the name of the library.
682 extra-libs-left := $(extra-libs)
683 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
687 # The makefile may define $(modules-names) to build additional modules.
688 # These are built with $(build-module), except any in $(modules-names-nobuild).
690 # extra-lib.mk is included once for each extra lib to define rules
691 # to build it, and to add its objects to the various variables.
692 # During its evaluation, $(lib) is set to the name of the library.
693 extra-modules-left := $(modules-names)
694 include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
696 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
697 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
698 $(objpfx)%.os $(common-objpfx)shlib.lds \
699 $(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a
703 +depfiles := $(sources:.c=.d) \
704 $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
705 $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
706 ifeq ($(build-programs),yes)
707 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
709 +depfiles := $(addprefix $(objpfx),\
710 $(filter-out $(addsuffix .d,$(omit-deps)),\
712 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
713 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
714 $(wildcard $(all-dt-files:.dt=.d))
716 # This is a funny rule in that it removes its input file.
718 @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
719 mv -f $(@:.d=.T) $@ && \
722 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
723 # They will be generated when they're needed, and trying too early won't work.
724 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
725 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
730 -include $(+depfiles)
734 # Maximize efficiency by minimizing the number of rules.
735 .SUFFIXES: # Clear the suffix list. We don't use suffix rules.
736 # Don't define any builtin rules.
737 MAKEFLAGS := $(MAKEFLAGS)r
739 # Generic rule for making directories.
741 # mkdir isn't smart enough to strip a trailing /.
744 # Make sure that object files are not removed
745 # when they are intermediates between sources and library members.
746 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
748 # Make sure that the parent library archive is never removed.
749 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
751 # Use the verbose option of ar and tar when not running silently.
752 ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
758 ARFLAGS := r$(verbose)
759 CREATE_ARFLAGS := cru$(verbose)
761 # This makes all the object files in the parent library archive.
763 .PHONY: lib lib-noranlib
764 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
765 lib-noranlib: libobjs
767 # For object-suffix $o, the list of objects with that suffix.
768 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
769 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
770 $(elide-routines$o)),\
772 $(addprefix $(objpfx),$(o-objects$o))
774 others: $(addprefix $(objpfx),$(install-lib))
778 # Create the stamp$o files to keep the parent makefile happy.
779 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
780 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
781 $(make-target-directory)
785 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
786 # timestamp file; these rules (one explicit rule is generated for each
787 # object suffix) write a list of objects to update in the stamp file.
788 # The parent will then actually add them all to the archive in the
789 # archive rule, below.
790 define o-iterator-doit
791 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
794 $(make-target-directory)
795 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
798 object-suffixes-left := $(object-suffixes-for-libc)
799 include $(o-iterator)
803 # Now define explicit rules to build the library archives; these depend
804 # on the stamp files built above.
805 define o-iterator-doit
806 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
807 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
810 cd $(common-objdir) && \
811 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
814 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
815 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
817 $(subdirs-stamps): subdir_lib;
819 object-suffixes-left = $(object-suffixes-for-libc)
820 include $(o-iterator)
823 # This makes all the object files.
824 .PHONY: objects objs libobjs extra-objs
825 objects objs: libobjs extra-objs
826 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
827 extra-objs: $(addprefix $(objpfx),$(extra-objs))
829 # Canned sequence for building an extra library archive.
830 define build-extra-lib
831 $(patsubst %/,cd % &&,$(objpfx)) \
832 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
833 $(patsubst $(objpfx)%,%,$^)
839 .PHONY: force-install
842 # $(install-lib) are installed from the object directory into $(libdir);
843 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
844 # unless they also appear in $(non-lib.a). $(install-data) are installed
845 # as they are into $(datadir). $(headers) are installed as they are in
846 # $(includedir). $(install-bin), $(install-bin-script) and $(install-sbin)
847 # are installed from the object directory into $(bindir), $(bindir) and
848 # $(sbindir), respectively. $(install-others) are absolute path names of
849 # files to install; rules to install them are defined elsewhere.
851 # The simple library name to install libc.a under.
852 # This could be defined by a sysdep Makefile.
858 $(make-target-directory)
859 $(INSTALL_DATA) $< $@
862 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
863 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
864 define make-target-directory
865 $(addprefix $(..)./scripts/mkinstalldirs ,\
866 $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
869 # Any directory (parent or subdir) should install libc.a; this way
870 # "make install" in a subdir is guaranteed to install everything it changes.
871 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
872 $(inst_libdir)/$(patsubst %,$(libtype$o),\
873 $(libprefix)$(libc-name)))
874 install: $(installed-libcs)
875 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
876 $(make-target-directory)
877 $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
878 # Running ranlib after installing makes the __.SYMDEF time stamp up to
879 # date, which avoids messages from some linkers.
882 define do-install-program
883 $(make-target-directory)
884 $(INSTALL_PROGRAM) $< $@.new
888 define do-install-script
889 $(make-target-directory)
890 $(INSTALL_SCRIPT) $< $@.new
894 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
895 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
897 ifeq (yes,$(build-shared))
898 # Find which .so's have versions.
899 versioned := $(strip $(foreach so,$(install-lib.so),\
900 $(patsubst %,$(so),$($(so)-version))))
902 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
903 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
905 # For versioned libraries, we install three files:
906 # $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
907 # $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
908 # $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
909 V := $(firstword $($(subdir)-version) $(version))
910 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
911 $(foreach L,$(install-lib.so-versioned),\
913 $(inst_slibdir)/$(L:.so=)-$V.so \
914 $(inst_slibdir)/$L$($L-version))
916 # Install all the unversioned shared libraries.
917 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
918 $(objpfx)%.so $(+force)
919 $(do-install-program)
921 ifneq ($(findstring -s,$(LN_S)),)
924 $(SHELL) $(..)scripts/rellns-sh $< $@.new
928 # If we have no symbolic links don't bother with rellns-sh.
936 ifeq (yes,$(build-shared))
937 ifeq (no,$(cross-compiling))
938 symbolic-link-prog := $(common-objpfx)elf/sln
939 symbolic-link-list := $(common-objpfx)elf/symlink.list
940 define make-shlib-link
941 echo $(<F) $@ >> $(symbolic-link-list)
943 else # cross-compiling
944 # We need a definition that can be used by elf/Makefile's install rules.
945 symbolic-link-prog = $(LN_S)
948 ifndef make-shlib-link
949 define make-shlib-link
955 ifdef libc.so-version
956 # For a library specified to be version N, install three files:
957 # libc.so -> libc.so.N (e.g. libc.so.6)
958 # libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
960 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
963 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
964 $(do-install-program)
965 install: $(inst_slibdir)/libc.so$(libc.so-version)
967 # This fragment of linker script gives the OUTPUT_FORMAT statement
968 # for the configuration we are building. We put this statement into
969 # the linker scripts we install for -lc et al so that they will not be
970 # used by a link for a different format on a multi-architecture system.
971 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
972 $(common-objpfx)config.make \
973 $(common-objpfx)config.h $(..)Makerules
974 $(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
975 -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
976 | sed -n -f $< > $@.new
979 common-generated += format.lds
982 # What we install as libc.so for programs to link against is in fact a
983 # link script. It contains references for the various libraries we need.
984 # The libc.so object is not complete since some functions are only defined
985 # in libc_nonshared.a.
986 # We need to use absolute paths since otherwise local copies (if they exist)
987 # of the files are taken by the linker.
988 install: $(inst_libdir)/libc.so
989 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
990 $(common-objpfx)libc.so$(libc.so-version) \
991 $(inst_libdir)/$(patsubst %,$(libtype.oS),\
992 $(libprefix)$(libc-name)) \
994 (echo '/* GNU ld script';\
995 echo ' Use the shared library, but some functions are only in';\
996 echo ' the static library, so try that secondarily. */';\
998 echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
999 '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1000 ' AS_NEEDED (' $(slibdir)/$(rtld-installed-name) ') )' \
1007 install: $(inst_slibdir)/libc.so
1008 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1009 $(do-install-program)
1012 ifneq (,$(versioned))
1013 # Produce three sets of rules as above for all the smaller versioned libraries.
1015 define o-iterator-doit
1016 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1018 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1019 ifneq (,$(object-suffixes-left))
1020 include $(o-iterator)
1023 # Make symlinks in the build directory, because the versioned names might
1024 # be referenced by a DT_NEEDED in another library.
1025 define o-iterator-doit
1026 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1028 object-suffixes-left := $(versioned)
1029 include $(o-iterator)
1031 generated += $(foreach o,$(versioned),$o$($o-version))
1033 ifeq (,$($(subdir)-version))
1034 define o-iterator-doit
1035 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1039 object-suffixes-left := $(versioned)
1040 include $(o-iterator)
1042 define o-iterator-doit
1043 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1044 $$(do-install-program)
1046 object-suffixes-left := $(versioned)
1047 include $(o-iterator)
1049 define o-iterator-doit
1050 $(inst_slibdir)/$o$($o-version): \
1051 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1054 object-suffixes-left := $(versioned)
1055 include $(o-iterator)
1057 define o-iterator-doit
1058 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1059 $$(do-install-program)
1061 object-suffixes-left := $(versioned)
1062 include $(o-iterator)
1066 define do-install-so
1067 $(do-install-program)
1068 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1069 $(filter-out %.so,$@))
1072 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1073 $(foreach v,$(so-versions),\
1074 $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1077 $(foreach v,$(so-versions),\
1078 $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1083 $(addprefix $(inst_bindir)/,$(install-bin)): \
1084 $(inst_bindir)/%: $(objpfx)% $(+force)
1085 $(do-install-program)
1087 ifdef install-bin-script
1088 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1089 $(inst_bindir)/%: $(objpfx)% $(+force)
1090 $(do-install-script)
1092 ifdef install-rootsbin
1093 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1094 $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1095 $(do-install-program)
1098 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1099 $(inst_sbindir)/%: $(objpfx)% $(+force)
1100 $(do-install-program)
1103 install-lib.a := $(filter lib%.a,$(install-lib))
1104 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1105 ifdef install-lib-non.a
1106 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1107 $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1111 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1112 $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1114 $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
1118 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1121 headers := $(strip $(headers))
1123 # This implicit rule installs headers from the source directory.
1124 # It may be ignored in preference to rules from sysd-rules to find
1125 # headers in the sysdeps tree.
1126 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1128 $(inst_includedir)/%.h: %.h $(+force)
1130 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1132 headers-nonh := $(filter-out %.h,$(headers))
1134 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1137 endif # headers-nonh
1140 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1141 install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1142 install-data-nosubdir install-headers-nosubdir
1143 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1144 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1145 install-rootsbin-nosubdir: \
1146 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1147 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1148 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1149 $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1150 $(addprefix $(libprefix),$(install-lib-non.a)))
1151 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1152 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1153 install-others-nosubdir: $(install-others)
1155 # We need all the `-nosubdir' targets so that `install' in the parent
1156 # doesn't depend on several things which each iterate over the subdirs.
1157 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1158 # subroutine. Then in the parent `install-FOO' also causes subdir makes.
1159 install-%:: install-%-nosubdir ;
1161 .PHONY: install install-no-libc.a-nosubdir
1162 ifeq ($(build-programs),yes)
1163 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1164 install-bin-nosubdir install-bin-script-nosubdir \
1165 install-lib-nosubdir install-others-nosubdir \
1166 install-rootsbin-nosubdir install-sbin-nosubdir
1168 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1169 install-lib-nosubdir install-others-nosubdir
1171 install: install-no-libc.a-nosubdir
1173 # Command to compile $< in $(objdir) using the native libraries.
1174 define native-compile
1175 $(make-target-directory)
1176 $(patsubst %/,cd % &&,$(objpfx)) \
1177 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1178 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1181 # Command to compile $< in $(common-objdir) using the native libraries.
1182 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1183 define common-objdir-compile
1184 $(patsubst %/,cd % &&,$(objpfx)) \
1185 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1186 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1189 # We always want to use configuration definitions.
1190 # Note that this is only used for commands running in $(objpfx).
1191 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1193 # Support the GNU standard name for this target.
1196 # Special target to run tests which cannot be run unconditionally.
1197 # Maintainers should use this target.
1201 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1202 ifneq (,$(all-nonlib))
1203 cpp-srcs-left = $(all-nonlib:=.c) $(all-nonlib:=.cc)
1205 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
1208 # The include magic above causes those files to use this variable for flags.
1209 CPPFLAGS-nonlib = -DNOT_IN_libc=1
1212 ifeq ($(versioning),yes)
1213 # Generate normalized lists of symbols, versions, and data sizes.
1214 # This is handy for checking against existing library binaries.
1216 %.symlist: $(..)scripts/abilist.awk %.dynsym
1217 LC_ALL=C $(AWK) -f $^ > $@T
1221 $(OBJDUMP) --dynamic-syms $< > $@T
1224 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1225 $(..)abilist/%.abilist $(objpfx)%.symlist
1227 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1228 $(..)abilist/%.abilist $(common-objpfx)%.symlist
1232 $(AWK) -f $< -v 'config=$(check-abi-config)' \
1233 $(patsubst %,-v 'lastversion=%',$($*-abi-frozen)) \
1234 $(filter %.abilist,$^) \
1235 | { diff -p -U 0 - $(filter %.symlist,$^) $(check-abi-warn) ; }
1237 ifeq ($(enable-check-abi),warn)
1238 check-abi-warn = || echo '*** WARNING: $*.so failed ABI check'
1241 ifeq ($(firstword $(sysd-sorted-done) f)$(firstword $(generating) f),tf)
1242 -include $(common-objpfx)tls.make
1244 ifeq ($(use-tls),yes)
1247 ifeq ($(use-thread),yes)
1248 config-tls := thread
1250 check-abi-config := \
1251 $(config-machine)-$(config-vendor)-$(config-os)/$(config-tls)
1254 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1257 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1258 $(common-objpfx)%.symlist
1260 ifndef update-abi-config
1262 @echo 'Run $(MAKE) $@ update-abi-config=REGEXP'; exit 2
1266 LC_ALL=C $(AWK) -v config='$(update-abi-config)' -f $^ \
1267 > $(..)abilist/$*.abilist.new
1268 @if cmp -s $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist 2> /dev/null; \
1269 then rm -f $(..)abilist/$*.abilist.new; \
1270 echo '+++ $(..)abilist/$*.abilist is unchanged'; \
1271 else mv -f $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist; \
1272 echo '*** Now check $*.abilist changes for correctness ***'; \
1277 .PHONY: update-abi check-abi
1278 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1279 check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1281 subdir_check-abi: check-abi
1282 subdir_update-abi: update-abi
1284 check-abi: subdir_check-abi
1285 update-abi: subdir_update-abi
1288 ifeq ($(subdir),elf)
1289 check-abi: check-abi-libc
1290 update-abi: update-abi-libc
1291 common-generated += libc.symlist
1294 ifeq ($(build-shared),yes)
1295 ifneq ($(enable-check-abi),no)
1304 # There's no good place to put this - here will do.
1305 ifeq ($(filter %posix, $(sysdirs)),)
1316 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1318 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1319 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1320 $(common-objpfx)config.make
1321 $(make-target-directory)
1322 { echo '#include "$(..)posix/bits/posix1_lim.h"'; \
1323 echo '#define _LIBC 1'; \
1324 echo '#include "$(..)misc/sys/uio.h"'; } | \
1325 $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' \
1326 $(+includes) -xc - -o $(@:st=hT)
1327 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
1328 $(@:st=dT) > $(@:st=dt)
1329 mv -f $(@:st=dt) $(@:st=d)
1330 fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; \
1331 filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`; \
1332 iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`; \
1333 fopen_max=$${fopen_max:-16}; \
1334 filename_max=$${filename_max:-1024}; \
1335 if [ -z "$$iov_max" ]; then \
1336 define_iov_max="# undef IOV_MAX"; \
1338 define_iov_max="# define IOV_MAX $$iov_max"; \
1340 sed -e "s/@FOPEN_MAX@/$$fopen_max/" \
1341 -e "s/@FILENAME_MAX@/$$filename_max/" \
1342 -e "s/@L_tmpnam@/$(L_tmpnam)/" \
1343 -e "s/@TMP_MAX@/$(TMP_MAX)/" \
1344 -e "s/@L_ctermid@/$(L_ctermid)/" \
1345 -e "s/@L_cuserid@/$(L_cuserid)/" \
1346 -e "s/@define_IOV_MAX@/$$define_iov_max/" \
1348 $(move-if-change) $(@:st=h.new) $(@:st=h)
1349 # Remove these last so that they can be examined if something went wrong.
1350 rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1354 -include $(stdio_lim:h=d)
1356 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1360 .PHONY: echo-headers
1364 %.bz2: %; bzip2 -9vk $<
1365 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1367 # Common cleaning targets.
1369 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1371 mostlyclean: common-mostlyclean
1374 -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1376 $(addsuffix -bp.out,$(tests) $(xtests) \
1379 # Remove the object files.
1381 -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1382 $(others) $(sysdep-others) stubs \
1383 $(addsuffix .o,$(tests) $(xtests) \
1384 $(test-srcs) $(others) \
1386 $(addsuffix -bp,$(tests) $(xtests) \
1388 $(addsuffix .out,$(tests) $(xtests) \
1390 $(addsuffix -bp.out,$(tests) $(xtests) \
1392 -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
1394 $(install-lib.so:%.so=%_pic.a))
1396 -rm -f $(objpfx)rtld-*.os
1399 $(foreach o,$(object-suffixes-for-libc),
1400 -rm -f $(objpfx)stamp$o $(o-objects))
1403 # Also remove the dependencies and generated source files.
1404 common-clean: common-mostlyclean
1405 -rm -f $(addprefix $(objpfx),$(generated))
1406 -rm -f $(objpfx)*.d $(objpfx)*.dt
1407 -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1408 -rm -f $(addprefix $(common-objpfx),$(common-generated))
1410 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1411 # for each function which is a stub. We grovel over all the .d files
1412 # looking for references to <stub-tag.h>. Then we grovel over each
1413 # referenced source file to see what stub function it defines.
1416 .PHONY: stubs # The parent Makefile calls this target.
1417 stubs: $(objpfx)stubs
1419 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1420 $(addprefix $(objpfx),$(extra-objs))
1421 $(objpfx)stubs: $(objs-for-stubs)
1422 ifneq (,$(strip $(objs-for-stubs)))
1423 (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1424 $(AWK) '/\.gnu\.glibc-stub\./ { \
1425 sub(/\.gnu\.glibc-stub\./, "", $$2); \
1427 END { for (s in stubs) print "#define __stub_" s }' > $@T
1433 ifneq (,$(strip $(gpl2lgpl)))
1434 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1435 # Snarf from the master source and frob the copying notice.
1436 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1438 # So I don't edit them by mistake.
1441 ifeq ($(with-cvs),yes)
1442 test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@