1 # Copyright (C) 1991-2002, 2003, 2004 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 # Generating headers for assembly constants.
187 # We need this defined early to get into before-compile before
188 # it's used in sysd-rules, below.
189 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
190 %.sym $(common-before-compile)
191 $(AWK) -f $< $(filter %.sym,$^) \
192 | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
193 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
194 sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
195 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
197 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
198 $(@:.h=.h.d)T > $(@:.h=.h.d)T2
200 mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
201 mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
202 vpath %.sym $(sysdirs)
203 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
205 # Generate an ordered list of implicit rules which find the source files in
206 # each sysdep directory. The old method was to use vpath to search all the
207 # sysdep directories. However, that had the problem that a .S file in a
208 # later directory would be chosen over a .c file in an earlier directory,
209 # which does not preserve the desired sysdeps ordering behavior.
211 # It matters that this set of rules, for compiling from sources in
212 # the current directory (the $srcdir/$subdir) come before the
213 # generated sysdep rules in included from sysd-rules below. When
214 # compiling in the source tree, generated sources go into the current
215 # directory, and those should be chosen before any sources in sysdeps.
216 define o-iterator-doit
217 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
219 object-suffixes-left := $(all-object-suffixes)
220 include $(o-iterator)
222 define o-iterator-doit
223 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
225 object-suffixes-left := $(all-object-suffixes)
226 include $(o-iterator)
228 define o-iterator-doit
229 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
231 object-suffixes-left := $(all-object-suffixes)
232 include $(o-iterator)
234 # Omit the objpfx rules when building in the source tree, because
235 # objpfx is empty and so these rules just override the ones above.
237 # Define first rules to find the source files in $(objpfx).
238 # Generated source files will end up there.
239 define o-iterator-doit
240 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
242 object-suffixes-left := $(all-object-suffixes)
243 include $(o-iterator)
245 define o-iterator-doit
246 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
248 object-suffixes-left := $(all-object-suffixes)
249 include $(o-iterator)
251 define o-iterator-doit
252 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
254 object-suffixes-left := $(all-object-suffixes)
255 include $(o-iterator)
258 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
259 # patterns matching sysdep directories whose assembly source files should
261 ifdef inhibit-sysdep-asm
262 define open-check-inhibit-asm
263 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
265 close-check-inhibit-asm = ;; esac ;
268 -include $(+sysdir_pfx)sysd-rules
269 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
270 # The value of $(+sysdep_dirs) the sysd-rules was computed for
271 # differs from the one we are using now. So force a rebuild of sysd-rules.
272 sysd-rules-force = FORCE
275 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
276 $(wildcard $(foreach dir,$(sysdirs),\
280 (echo 'sysd-rules-sysdirs := $(config-sysdirs)'; \
281 for dir in $(config-sysdirs:%='$$(..)%'); do \
282 for o in $(all-object-suffixes); do \
283 $(open-check-inhibit-asm) \
284 echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
285 \$$(compile-command.S)"; \
286 echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
287 \$$(compile-command.s)"; \
288 echo "\$$(objpfx)rtld-%$$o: $$dir/%.S \$$(before-compile); \
289 \$$(compile-command.S)"; \
290 echo "\$$(objpfx)rtld-%$$o: $$dir/%.s \$$(before-compile); \
291 \$$(compile-command.s)"; \
292 echo "\$$(objpfx)ptw-%$$o: $$dir/%.S \$$(before-compile); \
293 \$$(compile-command.S)"; \
294 echo "\$$(objpfx)ptw-%$$o: $$dir/%.s \$$(before-compile); \
295 \$$(compile-command.s)"; \
296 $(close-check-inhibit-asm) \
297 echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
298 \$$(compile-command.c)"; \
299 echo "\$$(objpfx)rtld-%$$o: $$dir/%.c \$$(before-compile); \
300 \$$(compile-command.c)"; \
301 echo "\$$(objpfx)ptw-%$$o: $$dir/%.c \$$(before-compile); \
302 \$$(compile-command.c)"; \
304 echo "\$$(objpfx)m_%.S: $$dir/s_%.S; \$$(+make-include-of-dep)"; \
305 echo "\$$(objpfx)m_%.c: $$dir/s_%.c; \$$(+make-include-of-dep)"; \
307 echo 'sysd-rules-done = t') > $@T
310 ifndef sysd-rules-done
311 # Don't do deps until this exists, because it provides rules to make the deps.
315 # This is used by the m_%.[Sc] pattern rules in sysd-rules.
316 define +make-include-of-dep
317 echo '#include <$<>' > $@T
321 # Generate version maps, but wait until sysdep-subdirs is known
322 ifeq ($(sysd-sorted-done),t)
323 ifeq ($(versioning),yes)
324 -include $(common-objpfx)sysd-versions
325 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
326 common-generated += $(version-maps)
327 postclean-generated += sysd-versions Versions.all abi-versions.h \
328 Versions.def.v.i Versions.def.v Versions.v.i Versions.v
330 ifndef avoid-generated
331 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
332 sysd-versions-force = FORCE
335 # See %.v/%.v.i implicit rules in Makeconfig.
336 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
337 $(wildcard $(add-ons:%=$(..)%/Versions.def))
338 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
339 $(common-objpfx)soversions.i \
340 $(common-objpfx)Versions.def.v
341 { while read lib version setname; do \
342 test -z "$$setname" || echo "$$lib : $$setname"; \
343 done < $(word 2,$^); \
345 } | LC_ALL=C $(AWK) -f $< > $@T
347 # See %.v/%.v.i implicit rules in Makeconfig.
348 $(common-objpfx)Versions.v.i: $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
349 $(wildcard $(sysdirs:%=%/Versions)) \
350 $(common-objpfx)abi-versions.h \
351 $(sysd-versions-force)
352 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
353 $(common-objpfx)Versions.v \
354 $(..)scripts/versions.awk
355 ( echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
357 | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
358 -v move_if_change='$(move-if-change)' \
362 endif # avoid-generated
363 endif # $(versioning) = yes
364 endif # sysd-sorted-done
366 # Generate .dT files as we compile.
367 compile-mkdep-flags = -MD -MP -MF $@.dt
368 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
369 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION) $(compile-mkdep-flags)
370 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
372 # GCC can grok options after the file name, and it looks nicer that way.
373 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
374 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
375 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
376 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
377 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
378 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
380 # We need this for the output to go in the right place. It will default to
381 # empty if make was configured to work with a cc that can't grok -c and -o
382 # together. You can't compile the C library with such a compiler.
383 OUTPUT_OPTION = -o $@
385 # We need the $(CFLAGS) to be in there to have the right predefines during
386 # the dependency run for C sources. But having it for assembly sources can
387 # get the wrong predefines.
388 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
391 $(make-target-directory)
392 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
393 $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
394 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
395 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
396 mv -f $(@:.d=.T) $@ $(generate-md5)
400 # Continuation lines here are dangerous because they introduce spaces!
401 define sed-remove-objpfx
402 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
403 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
407 # Modify the list of routines we build for different targets
409 ifeq (yesyes,$(build-shared)$(elf))
410 ifndef libc.so-version
411 # Undefine this because it can't work when we libc.so is unversioned.
412 static-only-routines =
416 # Bounded pointer thunks are only built for *.ob
417 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
419 elide-routines.oS += $(filter-out $(static-only-routines),\
420 $(routines) $(aux) $(sysdep_routines)) \
422 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
424 # If we have versioned code we don't need the old versions in any of the
426 elide-routines.o += $(shared-only-routines) $(elide-bp-thunks)
427 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
428 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
429 elide-routines.ob += $(shared-only-routines)
431 # Shared library building.
433 ifeq (yes,$(build-shared))
435 # Reference map file only when versioning is selected and a map file name
437 ifeq ($(versioning),yes)
438 map-file = $(firstword $($(@F:.so=-map)) \
439 $(addprefix $(common-objpfx), \
440 $(filter $(@F:.so=.map),$(version-maps))))
441 load-map-file = $(map-file:%=-Wl,--version-script=%)
444 # Pattern rule to build a shared object from an archive of PIC objects.
445 # This must come after the installation rules so Make doesn't try to
446 # build shared libraries in place from the installed *_pic.a files.
447 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
448 # on other shared objects.
449 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
450 ifneq (,$(findstring aix,$(config-os)))
452 dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
457 define build-shlib-helper
458 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
459 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
460 $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
461 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
462 -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
463 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
464 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
467 ifneq (,$(findstring aix,$(config-os)))
468 define build-shlib-helper
469 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
470 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
471 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
472 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
473 -L$(subst :, -L,$(rpath-link))
480 # binutils only position loadable notes into the first page for binaries,
481 # not for shared objects
482 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
483 $(LINK.o) -shared -Wl,-O1 \
484 -nostdlib -nostartfiles \
485 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
486 -Wl,--verbose 2>&1 | \
488 -e '/^=========/,/^=========/!d;/^=========/d' \
489 -e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
490 -e 's/^.*\*(\.dynbss).*$$/& \
491 PROVIDE(__start___libc_freeres_ptrs = .); \
492 *(__libc_freeres_ptrs) \
493 PROVIDE(__stop___libc_freeres_ptrs = .);/'\
494 -e 's/^.*\*(\.jcr).*$$/&\n\
495 PROVIDE(__start___libc_subfreeres = .);\n\
496 __libc_subfreeres : { *(__libc_subfreeres) }\n\
497 PROVIDE(__stop___libc_subfreeres = .);\n\
498 PROVIDE(__start___libc_atexit = .);\n\
499 __libc_atexit : { *(__libc_atexit) }\n\
500 PROVIDE(__stop___libc_atexit = .);\n\
501 PROVIDE(__start___libc_thread_subfreeres = .);\n\
502 __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\n\
503 PROVIDE(__stop___libc_thread_subfreeres = .);/'
505 common-generated += shlib.lds
508 $(build-shlib-helper) -o $@ -T $(common-objpfx)shlib.lds \
509 $(csu-objpfx)abi-note.o $(build-shlib-objlist)
512 ifneq (,$(findstring aix,$(config-os)))
514 $(build-shlib-helper) \
516 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
517 $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
520 $(build-shlib-helper) \
521 $(build-shlib-objlist)
526 ifneq (,$(findstring aix,$(config-os)))
527 define build-module-helper
528 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
529 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
531 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
532 -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
535 define build-module-helper
536 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
537 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
538 -B$(csu-objpfx) $(load-map-file) \
539 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
540 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
544 # This macro is similar to build-shlib but it does not define a soname
545 # and it does not depend on the destination name to start with `lib'.
547 # binutils only position loadable notes into the first page for binaries,
548 # not for shared objects
550 $(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
551 $(csu-objpfx)abi-note.o $(build-module-objlist)
554 ifneq (,$(findstring aix,$(config-os)))
556 $(build-module-helper) \
558 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
559 $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
564 $(build-module-helper) \
566 $(build-module-objlist)
571 build-module-helper-objlist = \
572 $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
573 $(filter-out %.lds $(map-file) $(+preinit) $(+postinit),$^))
574 whole-archive := -Wl,--whole-archive
576 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
577 build-shlib-objlist = $(build-module-helper-objlist) \
578 $(LDLIBS-$(@F:lib%.so=%).so)
580 # Don't try to use -lc when making libc.so itself.
581 # Also omits crti.o and crtn.o, which we do not want
582 # since we define our own `.init' section specially.
583 LDFLAGS-c.so = -nostdlib -nostartfiles
584 # But we still want to link libc.so against $(gnulib).
585 LDLIBS-c.so += $(gnulib)
586 # Give libc.so an entry point and make it directly runnable itself.
587 LDFLAGS-c.so += -e __libc_main
588 # Pre-link the objects of libc_pic.a so that we can locally resolve
589 # COMMON symbols before we link against ld.so. This is because ld.so
590 # contains some of libc_pic.a already, which will prevent the COMMONs
591 # from being allocated in libc.so, which introduces evil dependencies
592 # between libc.so and ld.so, which can make it impossible to upgrade.
594 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
595 $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
596 $(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
597 # Use our own special initializer and finalizer files for libc.so.
598 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
599 $(common-objpfx)libc_pic.os \
600 $(elfobjdir)/sofini.os \
601 $(elfobjdir)/interp.os $(elfobjdir)/ld.so \
602 $(common-objpfx)shlib.lds
604 ifeq ($(versioning),yes)
605 $(common-objpfx)libc.so: $(common-objpfx)libc.map
607 common-generated += libc.so libc_pic.os
608 ifdef libc.so-version
609 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
611 common-generated += libc.so$(libc.so-version)
615 ifneq (,$(findstring aix,$(config-os)))
616 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
619 dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
620 sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
621 /lib/syscalls.exp > $(common-objpfx)syscalls.exp
622 $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
623 -bE:$(common-objpfx)syscalls.exp \
624 -bI:$(common-objpfx)syscalls.exp \
625 -L$(common-objpfx) -o $@ $^
626 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
627 cp $@ $(common-objpfx)shr.o
628 $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
632 # Figure out the source filenames in this directory.
634 override sources := $(addsuffix .c,\
635 $(filter-out $(elided-routines),\
638 sysdep_routines := $(sysdep_routines)
640 headers := $(headers) $(sysdep_headers)
642 # This is the list of all object files, gotten by
643 # replacing every ".c" in `sources' with a ".o".
644 # We also add bounded-pointer thunks, which are later
645 # elided for all suffixes except for `.ob'.
646 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
647 $(patsubst %,$(bppfx)%.o,\
648 $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
651 # The makefile may define $(extra-libs) with `libfoo libbar'
652 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
654 # extra-lib.mk is included once for each extra lib to define rules
655 # to build it, and to add its objects to the various variables.
656 # During its evaluation, $(lib) is set to the name of the library.
657 extra-libs-left := $(extra-libs)
658 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
661 +depfiles := $(sources:.c=.d) \
662 $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
663 $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
664 ifeq ($(build-programs),yes)
665 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
667 +depfiles := $(addprefix $(objpfx),\
668 $(filter-out $(addsuffix .d,$(omit-deps)),\
670 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
671 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
672 $(wildcard $(all-dt-files:.dt=.d))
674 # This is a funny rule in that it removes its input file.
676 @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
677 mv -f $(@:.d=.T) $@ && \
680 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
681 # They will be generated when they're needed, and trying too early won't work.
682 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
683 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
688 -include $(+depfiles)
692 # Maximize efficiency by minimizing the number of rules.
693 .SUFFIXES: # Clear the suffix list. We don't use suffix rules.
694 # Don't define any builtin rules.
695 MAKEFLAGS := $(MAKEFLAGS)r
697 # Generic rule for making directories.
699 # mkdir isn't smart enough to strip a trailing /.
702 # Make sure that object files are not removed
703 # when they are intermediates between sources and library members.
704 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
706 # Make sure that the parent library archive is never removed.
707 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
709 # Use the verbose option of ar and tar when not running silently.
710 ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
716 ARFLAGS := r$(verbose)
717 CREATE_ARFLAGS := cru$(verbose)
719 # This makes all the object files in the parent library archive.
721 .PHONY: lib lib-noranlib
722 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
723 lib-noranlib: libobjs
725 # For object-suffix $o, the list of objects with that suffix.
726 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
727 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
728 $(elide-routines$o)),\
730 $(addprefix $(objpfx),$(o-objects$o))
732 others: $(addprefix $(objpfx),$(install-lib))
736 # Create the stamp$o files to keep the parent makefile happy.
737 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
738 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
739 $(make-target-directory)
743 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
744 # timestamp file; these rules (one explicit rule is generated for each
745 # object suffix) write a list of objects to update in the stamp file.
746 # The parent will then actually add them all to the archive in the
747 # archive rule, below.
748 define o-iterator-doit
749 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
752 $(make-target-directory)
753 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
756 object-suffixes-left := $(object-suffixes-for-libc)
757 include $(o-iterator)
761 # Now define explicit rules to build the library archives; these depend
762 # on the stamp files built above.
763 define o-iterator-doit
764 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
765 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
768 cd $(common-objdir) && \
769 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
772 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
773 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
775 $(subdirs-stamps): subdir_lib;
777 object-suffixes-left = $(object-suffixes-for-libc)
778 include $(o-iterator)
781 # This makes all the object files.
782 .PHONY: objects objs libobjs extra-objs
783 objects objs: libobjs extra-objs
784 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
785 extra-objs: $(addprefix $(objpfx),$(extra-objs))
787 # Canned sequence for building an extra library archive.
788 define build-extra-lib
789 $(patsubst %/,cd % &&,$(objpfx)) \
790 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
791 $(patsubst $(objpfx)%,%,$^)
797 .PHONY: force-install
800 # $(install-lib) are installed from the object directory into $(libdir);
801 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
802 # unless they also appear in $(non-lib.a). $(install-data) are installed
803 # as they are into $(datadir). $(headers) are installed as they are in
804 # $(includedir). $(install-bin), $(install-bin-script) and $(install-sbin)
805 # are installed from the object directory into $(bindir), $(bindir) and
806 # $(sbindir), respectively. $(install-others) are absolute path names of
807 # files to install; rules to install them are defined elsewhere.
809 # The simple library name to install libc.a under.
810 # This could be defined by a sysdep Makefile.
816 $(make-target-directory)
817 $(INSTALL_DATA) $< $@
820 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
821 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
822 define make-target-directory
823 $(addprefix $(..)./scripts/mkinstalldirs ,\
824 $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
827 # Any directory (parent or subdir) should install libc.a; this way
828 # "make install" in a subdir is guaranteed to install everything it changes.
829 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
830 $(inst_libdir)/$(patsubst %,$(libtype$o),\
831 $(libprefix)$(libc-name)))
832 install: $(installed-libcs)
833 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
834 $(make-target-directory)
835 $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
836 # Running ranlib after installing makes the __.SYMDEF time stamp up to
837 # date, which avoids messages from some linkers.
840 define do-install-program
841 $(make-target-directory)
842 $(INSTALL_PROGRAM) $< $@.new
846 define do-install-script
847 $(make-target-directory)
848 $(INSTALL_SCRIPT) $< $@.new
852 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
853 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
855 ifeq (yes,$(build-shared))
856 # Find which .so's have versions.
857 versioned := $(strip $(foreach so,$(install-lib.so),\
858 $(patsubst %,$(so),$($(so)-version))))
860 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
861 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
863 # For versioned libraries, we install three files:
864 # $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
865 # $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
866 # $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
867 V := $(firstword $($(subdir)-version) $(version))
868 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
869 $(foreach L,$(install-lib.so-versioned),\
871 $(inst_slibdir)/$(L:.so=)-$V.so \
872 $(inst_slibdir)/$L$($L-version))
874 # Install all the unversioned shared libraries.
875 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
876 $(objpfx)%.so $(+force)
877 $(do-install-program)
879 ifneq ($(findstring -s,$(LN_S)),)
882 $(SHELL) $(..)scripts/rellns-sh $< $@.new
886 # If we have no symbolic links don't bother with rellns-sh.
894 ifeq (yes,$(build-shared))
895 ifeq (no,$(cross-compiling))
896 symbolic-link-prog := $(common-objpfx)elf/sln
897 symbolic-link-list := $(common-objpfx)elf/symlink.list
898 define make-shlib-link
899 echo $(<F) $@ >> $(symbolic-link-list)
901 else # cross-compiling
902 # We need a definition that can be used by elf/Makefile's install rules.
903 symbolic-link-prog = $(LN_S)
906 ifndef make-shlib-link
907 define make-shlib-link
913 ifdef libc.so-version
914 # For a library specified to be version N, install three files:
915 # libc.so -> libc.so.N (e.g. libc.so.6)
916 # libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
918 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
921 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
922 $(do-install-program)
923 install: $(inst_slibdir)/libc.so$(libc.so-version)
925 # This fragment of linker script gives the OUTPUT_FORMAT statement
926 # for the configuration we are building. We put this statement into
927 # the linker scripts we install for -lc et al so that they will not be
928 # used by a link for a different format on a multi-architecture system.
929 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
930 $(common-objpfx)config.make \
931 $(common-objpfx)config.h $(..)Makerules
932 $(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
933 -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
934 | sed -n -f $< > $@.new
937 common-generated += format.lds
940 # What we install as libc.so for programs to link against is in fact a
941 # link script. It contains references for the various libraries we need.
942 # The libc.so object is not complete since some functions are only defined
943 # in libc_nonshared.a.
944 # We need to use absolute paths since otherwise local copies (if they exist)
945 # of the files are taken by the linker.
946 install: $(inst_libdir)/libc.so
947 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
948 $(common-objpfx)libc.so$(libc.so-version) \
949 $(inst_libdir)/$(patsubst %,$(libtype.oS),\
950 $(libprefix)$(libc-name)) \
952 (echo '/* GNU ld script';\
953 echo ' Use the shared library, but some functions are only in';\
954 echo ' the static library, so try that secondarily. */';\
956 echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
957 '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
965 install: $(inst_slibdir)/libc.so
966 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
967 $(do-install-program)
970 ifneq (,$(versioned))
971 # Produce three sets of rules as above for all the smaller versioned libraries.
973 define o-iterator-doit
974 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
976 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
977 ifneq (,$(object-suffixes-left))
978 include $(o-iterator)
981 # Make symlinks in the build directory, because the versioned names might
982 # be referenced by a DT_NEEDED in another library.
983 define o-iterator-doit
984 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
986 object-suffixes-left := $(versioned)
987 include $(o-iterator)
989 generated += $(foreach o,$(versioned),$o$($o-version))
991 ifeq (,$($(subdir)-version))
992 define o-iterator-doit
993 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
997 object-suffixes-left := $(versioned)
998 include $(o-iterator)
1000 define o-iterator-doit
1001 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1002 $$(do-install-program)
1004 object-suffixes-left := $(versioned)
1005 include $(o-iterator)
1007 define o-iterator-doit
1008 $(inst_slibdir)/$o$($o-version): \
1009 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1012 object-suffixes-left := $(versioned)
1013 include $(o-iterator)
1015 define o-iterator-doit
1016 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1017 $$(do-install-program)
1019 object-suffixes-left := $(versioned)
1020 include $(o-iterator)
1024 define do-install-so
1025 $(do-install-program)
1026 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1027 $(filter-out %.so,$@))
1030 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1031 $(foreach v,$(so-versions),\
1032 $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1035 $(foreach v,$(so-versions),\
1036 $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1041 $(addprefix $(inst_bindir)/,$(install-bin)): \
1042 $(inst_bindir)/%: $(objpfx)% $(+force)
1043 $(do-install-program)
1045 ifdef install-bin-script
1046 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1047 $(inst_bindir)/%: $(objpfx)% $(+force)
1048 $(do-install-script)
1050 ifdef install-rootsbin
1051 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1052 $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1053 $(do-install-program)
1056 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1057 $(inst_sbindir)/%: $(objpfx)% $(+force)
1058 $(do-install-program)
1061 install-lib.a := $(filter lib%.a,$(install-lib))
1062 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1063 ifdef install-lib-non.a
1064 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1065 $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1069 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1070 $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1072 $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
1076 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1079 headers := $(strip $(headers))
1081 $(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
1085 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1086 install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1087 install-data-nosubdir install-headers-nosubdir
1088 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1089 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1090 install-rootsbin-nosubdir: \
1091 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1092 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1093 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1094 $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1095 $(addprefix $(libprefix),$(install-lib-non.a)))
1096 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1097 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1098 install-others-nosubdir: $(install-others)
1100 # We need all the `-nosubdir' targets so that `install' in the parent
1101 # doesn't depend on several things which each iterate over the subdirs.
1102 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1103 # subroutine. Then in the parent `install-FOO' also causes subdir makes.
1104 install-%:: install-%-nosubdir ;
1106 .PHONY: install install-no-libc.a-nosubdir
1107 ifeq ($(build-programs),yes)
1108 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1109 install-bin-nosubdir install-bin-script-nosubdir \
1110 install-lib-nosubdir install-others-nosubdir \
1111 install-rootsbin-nosubdir install-sbin-nosubdir
1113 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1114 install-lib-nosubdir install-others-nosubdir
1116 install: install-no-libc.a-nosubdir
1118 # Command to compile $< in $(objdir) using the native libraries.
1119 define native-compile
1120 $(make-target-directory)
1121 $(patsubst %/,cd % &&,$(objpfx)) \
1122 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1123 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1126 # Command to compile $< in $(common-objdir) using the native libraries.
1127 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1128 define common-objdir-compile
1129 $(patsubst %/,cd % &&,$(objpfx)) \
1130 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1131 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1134 # We always want to use configuration definitions.
1135 # Note that this is only used for commands running in $(objpfx).
1136 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1138 # Support the GNU standard name for this target.
1141 # Special target to run tests which cannot be run unconditionally.
1142 # Maintainers should use this target.
1146 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1147 ifneq (,$(all-nonlib))
1148 cpp-srcs-left = $(all-nonlib:=.c)
1150 include $(patsubst %,$(..)cppflags-iterator.mk,$(all-nonlib))
1153 # The include magic above causes those files to use this variable for flags.
1154 CPPFLAGS-nonlib = -DNOT_IN_libc=1
1157 ifeq ($(versioning),yes)
1158 # Generate normalized lists of symbols, versions, and data sizes.
1159 # This is handy for checking against existing library binaries.
1161 %.symlist: $(..)scripts/abilist.awk %.dynsym
1162 LC_ALL=C $(AWK) -f $^ > $@T
1166 $(OBJDUMP) --dynamic-syms $< > $@T
1169 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1170 $(..)abilist/%.abilist $(objpfx)%.symlist
1172 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1173 $(..)abilist/%.abilist $(common-objpfx)%.symlist
1177 $(AWK) -f $< -v 'config=$(check-abi-config)' \
1178 $(filter %.abilist,$^) \
1179 | { diff -pu0 - $(filter %.symlist,$^) $(check-abi-warn) ; }
1181 ifeq ($(enable-check-abi),warn)
1182 check-abi-warn = || echo '*** WARNING: $*.so failed ABI check'
1185 ifeq ($(firstword $(sysd-sorted-done) f)$(firstword $(generating) f),tf)
1186 -include $(common-objpfx)tls.make
1188 ifeq ($(use-tls),yes)
1191 ifeq ($(use-thread),yes)
1192 config-tls := thread
1194 check-abi-config := \
1195 $(config-machine)-$(config-vendor)-$(config-os)/$(config-tls)
1198 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1201 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1202 $(common-objpfx)%.symlist
1204 ifndef update-abi-config
1206 @echo 'Run $(MAKE) $@ update-abi-config=REGEXP'; exit 2
1210 LC_ALL=C $(AWK) -v config='$(update-abi-config)' -f $^ \
1211 > $(..)abilist/$*.abilist.new
1212 @if cmp -s $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist 2> /dev/null; \
1213 then rm -f $(..)abilist/$*.abilist.new; \
1214 echo '+++ $(..)abilist/$*.abilist is unchanged'; \
1215 else mv -f $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist; \
1216 echo '*** Now check $*.abilist changes for correctness ***'; \
1221 .PHONY: update-abi check-abi
1222 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1223 check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1225 subdir_check-abi: check-abi
1226 subdir_update-abi: update-abi
1228 check-abi: subdir_check-abi
1229 update-abi: subdir_update-abi
1232 ifeq ($(subdir),elf)
1233 check-abi: check-abi-libc
1234 update-abi: update-abi-libc
1235 common-generated += libc.symlist
1238 ifeq ($(build-shared),yes)
1239 ifneq ($(enable-check-abi),no)
1248 # There's no good place to put this - here will do.
1249 ifeq ($(filter %posix, $(sysdirs)),)
1260 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1262 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1263 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1264 $(common-objpfx)config.make
1265 $(make-target-directory)
1266 { echo '#include "$(..)posix/bits/posix1_lim.h"'; \
1267 echo '#define _LIBC 1'; \
1268 echo '#include "$(..)misc/sys/uio.h"'; } | \
1269 $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' \
1270 $(+includes) -xc - -o $(@:st=hT)
1271 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
1272 $(@:st=dT) > $(@:st=dt)
1273 mv -f $(@:st=dt) $(@:st=d)
1274 fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; \
1275 filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`; \
1276 iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`; \
1277 fopen_max=$${fopen_max:-16}; \
1278 filename_max=$${filename_max:-1024}; \
1279 if [ -z "$$iov_max" ]; then \
1280 define_iov_max="# undef IOV_MAX"; \
1282 define_iov_max="# define IOV_MAX $$iov_max"; \
1284 sed -e "s/@FOPEN_MAX@/$$fopen_max/" \
1285 -e "s/@FILENAME_MAX@/$$filename_max/" \
1286 -e "s/@L_tmpnam@/$(L_tmpnam)/" \
1287 -e "s/@TMP_MAX@/$(TMP_MAX)/" \
1288 -e "s/@L_ctermid@/$(L_ctermid)/" \
1289 -e "s/@L_cuserid@/$(L_cuserid)/" \
1290 -e "s/@define_IOV_MAX@/$$define_iov_max/" \
1292 $(move-if-change) $(@:st=h.new) $(@:st=h)
1293 # Remove these last so that they can be examined if something went wrong.
1294 rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1298 -include $(stdio_lim:h=d)
1300 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1303 TAGS: $(objpfx)distinfo $(..)MakeTAGS
1304 $(MAKE) $(addprefix -f ,$^) $@
1306 $(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
1307 $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
1311 .PHONY: echo-headers
1316 # Common cleaning targets.
1318 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1320 mostlyclean: common-mostlyclean
1323 -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1325 $(addsuffix -bp.out,$(tests) $(xtests) \
1328 # Remove the object files.
1330 -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1331 $(others) $(sysdep-others) stubs \
1332 $(addsuffix .o,$(tests) $(xtests) \
1333 $(test-srcs) $(others) \
1335 $(addsuffix -bp,$(tests) $(xtests) \
1337 $(addsuffix .out,$(tests) $(xtests) \
1339 $(addsuffix -bp.out,$(tests) $(xtests) \
1341 -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
1343 $(install-lib.so:%.so=%_pic.a))
1345 -rm -f $(objpfx)rtld-*.os
1348 $(foreach o,$(object-suffixes-for-libc),
1349 -rm -f $(objpfx)stamp$o $(o-objects))
1352 # Also remove the dependencies and generated source files.
1353 common-clean: common-mostlyclean
1354 -rm -f $(addprefix $(objpfx),$(generated))
1355 -rm -f $(objpfx)*.d $(objpfx)*.dt
1356 -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1357 -rm -f $(addprefix $(common-objpfx),$(common-generated))
1358 -rm -f $(objpfx)distinfo
1360 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1361 # for each function which is a stub. We grovel over all the .d files
1362 # looking for references to <stub-tag.h>. Then we grovel over each
1363 # referenced source file to see what stub function it defines.
1366 .PHONY: stubs # The parent Makefile calls this target.
1367 stubs: $(objpfx)stubs
1369 $(objpfx)stubs: $(+depfiles)
1370 ifneq (,$(strip $(+depfiles)))
1371 # Use /dev/null since `...` might expand to empty.
1372 c=`($(patsubst %/,cd % &&,$(objpfx)) \
1373 sed -n -e 's@\$$(common-objpfx)@$(common-objpfx)@g' \
1374 -e 's@\$$(objpfx)@$(objpfx)@g' \
1375 -e '/stub-tag\.h/{; g; s/./&/p; }' \
1376 -e '/:/{x; s/^.*$$//; x; }' \
1377 -e 's/^.*://;s/\\$$//;s/^ *\([^ ][^ ]*\) .*$$/\1/' \
1378 -e '/^[^ ][^ ]*$$/{G;s/^.*\n\(..*\)/\1/;s/\n//;h; }' \
1379 $(patsubst $(objpfx)%,%,$^)) | sort | uniq`; \
1380 sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
1387 # Make the distribution tar file.
1390 dist: $(objpfx)distinfo $(..)Make-dist
1391 $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
1393 # Avoid depending on source files found in sysdeps dirs,
1394 # because the references affect implicit rule selection.
1395 dist: $(filter-out %.c %.S %.s,$(distribute))
1397 # We used to simply export all these variables, but that frequently made the
1398 # environment get too large. Instead, we write all the information into
1399 # a generated makefile fragment `distinfo', and then include it with -f in
1400 # the sub-make that makes the distribution (above).
1401 $(objpfx)distinfo: Makefile $(..)Makerules \
1402 $(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
1403 $(make-target-directory)
1406 .PHONY: subdir_distinfo
1407 subdir_distinfo: $(objpfx)distinfo
1409 define distinfo-vars
1411 echo > $@.new 'subdir := $(subdir)'
1412 $(foreach var,subdir-dirs sources elided-routines sysdep_routines \
1413 headers sysdep_headers distribute dont_distribute generated \
1414 others tests xtests test-srcs extra-libs versioned \
1415 $(extra-libs:%=%-routines) \
1416 $(addprefix install-,lib lib.so data bin bin-script sbin others),
1417 echo >> $@.new '$(subdir)-$(var) := $($(var))'
1418 echo >> $@.new '$(var) = $$($(subdir)-$(var))')
1421 ifneq (,$(strip $(gpl2lgpl)))
1422 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1423 # Snarf from the master source and frob the copying notice.
1424 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1426 # So I don't edit them by mistake.
1429 ifeq ($(with-cvs),yes)
1430 test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@