1 # Copyright (C) 1991-2006,2007,2008,2009,2010 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 # This variable is used in ``include $(o-iterator)'' after defining
60 # $(o-iterator-doit) to produce some desired rule using $o for the object
61 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
62 # is produced for each object suffix in use.
63 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
65 # Include any system-specific makefiles.
67 # This is here so things in sysdep Makefiles can easily depend on foo.h as
68 # appropriate and not worry about where foo.h comes from, which may be
69 # system dependent and not known by that Makefile.
70 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
71 $(+sysdep_dirs) $(..)))
73 # The same is true for RPC source files.
74 vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
75 $(+sysdep_dirs) $(..)))
77 # Some sysdep makefiles use this to distinguish being included here from
78 # being included individually by a subdir makefile (hurd/Makefile needs this).
81 sysdep-makefiles := $(wildcard $(sysdirs:=/Makefile))
82 ifneq (,$(sysdep-makefiles))
83 include $(sysdep-makefiles)
87 # Reorder before-compile so that mach things come first, and hurd things
88 # second, before all else. The mach and hurd subdirectories have many
89 # generated header files which the much of rest of the library depends on,
90 # so it is best to build them first (and mach before hurd, at that).
91 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
93 $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
96 # Even before that, we need abi-versions.h which is generated right here.
97 ifeq ($(versioning),yes)
98 ifndef avoid-generated
99 before-compile := $(common-objpfx)abi-versions.h $(before-compile)
100 $(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
101 $(common-objpfx)Versions.all
102 LC_ALL=C $(AWK) -v oldest_abi=$(oldest-abi) -f $^ > $@T
105 $(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
106 sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
107 $(common-objpfx)abi-versions.h > $@T
109 endif # avoid-generated
110 endif # $(versioning) = yes
112 ifndef avoid-generated
113 before-compile := $(common-objpfx)libc-abis.h $(before-compile)
114 $(common-objpfx)libc-abis.h: $(..)scripts/gen-libc-abis \
115 $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
119 $(base-machine)-$(config-vendor)-$(config-os) \
121 $(move-if-change) $@T $@
122 common-generated += $(common-objpfx)libc-abis.h
123 endif # avoid-generated
125 # Make sure the subdirectory for object files gets created.
127 ifeq (,$(wildcard $(objpfx).))
128 before-compile += $(objpfx).
130 $(make-target-directory)
134 # Remove existing files from `before-compile'. Things are added there when
135 # they must exist for dependency generation to work right, but once they
136 # exist there is no further need for every single file to depend on them,
137 # and those gratuitous dependencies result in many gratuitous
139 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
141 # Don't let any before-compile file be an intermediate and get removed.
146 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
149 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
151 common-before-compile = $(before-compile)
155 # If a makefile needs to do something conditional on something that
156 # can only be figured out from headers, write a FOO.make.c input
157 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
158 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
160 # We only generate these in the top-level makefile, to avoid any weirdness
161 # from subdir-specific makefile tweaks creeping in on an update.
162 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
164 (echo '# Generated from $*.make.c by Makerules.'; \
165 $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
166 -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
167 | sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \
168 echo 'common-generated += $(@F)'; \
169 sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
175 sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g' \
176 -e 's@^\.\.\/\([^ \]*\)@$$(..)\1@g'
178 sed-remove-dotdot := -e 's@ *\([^ \/$$][^ \]*\)@ $$(..)\1@g' \
179 -e 's@^\([^ \/$$][^ \]*\)@$$(..)\1@g'
183 ifdef gen-as-const-headers
184 # Generating headers for assembly constants.
185 # We need this defined early to get into before-compile before
186 # it's used in sysd-rules, below.
187 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
188 %.sym $(common-before-compile)
189 $(AWK) -f $< $(filter %.sym,$^) \
190 | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
191 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
192 sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
193 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
195 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
196 $(@:.h=.h.d)T > $(@:.h=.h.d)T2
198 mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
199 mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
200 vpath %.sym $(sysdirs)
201 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
203 tests += $(gen-as-const-headers:%.sym=test-as-const-%)
204 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
205 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
206 %.sym $(common-objpfx)%.h
207 ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
208 $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
209 echo '#include "$(..)test-skeleton.c"') > $@T
213 # Generate an ordered list of implicit rules which find the source files in
214 # each sysdep directory. The old method was to use vpath to search all the
215 # sysdep directories. However, that had the problem that a .S file in a
216 # later directory would be chosen over a .c file in an earlier directory,
217 # which does not preserve the desired sysdeps ordering behavior.
219 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
220 # patterns matching sysdep directories whose assembly source files should
222 ifdef inhibit-sysdep-asm
223 define check-inhibit-asm
224 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) asm= ;; esac;
228 -include $(common-objpfx)sysd-rules
229 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
230 # The value of $(+sysdep_dirs) the sysd-rules was computed for
231 # differs from the one we are using now. So force a rebuild of sysd-rules.
232 sysd-rules-force = FORCE
235 $(common-objpfx)sysd-rules: $(common-objpfx)config.make $(..)Makerules \
236 $(sysdep-makefiles) $(sysdep-makeconfigs) \
239 (echo 'sysd-rules-sysdirs := $(config-sysdirs)'; \
240 for dir in $(config-sysdirs); do \
243 *) dir="\$$(..)$$dir" ;; \
246 $(check-inhibit-asm) \
247 for o in $(all-object-suffixes); do \
248 set $(subst :, ,$(sysd-rules-patterns)); \
249 while [ $$# -ge 2 ]; do \
252 v=$${t%%%}; [ x"$$v" = x ] || v="\$$($${v}CPPFLAGS)"; \
253 for s in $$asm .c; do \
254 echo "\$$(objpfx)$$t$$o: $$dir/$$d$$s \$$(before-compile)"; \
255 echo " \$$(compile-command$$s) $$v"; \
259 echo "\$$(inst_includedir)/%.h: $$dir/%.h \$$(+force)"; \
260 echo " \$$(do-install)"; \
262 echo 'sysd-rules-done = t') > $@T
265 ifndef sysd-rules-done
266 # Don't do deps until this exists, because it provides rules to make the deps.
270 -include $(common-objpfx)includes.mk
271 ifneq ($(+common-includes),$(saved-includes))
272 # Recreate includes.mk (and includes).
273 includes-force = FORCE
276 $(common-objpfx)includes.mk: $(includes-force)
277 -@rm -f $@T $(common-objpfx)includesT
278 for inc in $(+common-includes); do echo "$$inc"; done \
279 > $(common-objpfx)includesT
280 mv -f $(common-objpfx)includesT $(common-objpfx)includes
281 echo 'saved-includes := $(+common-includes)' > $@T
284 define o-iterator-doit
285 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
287 object-suffixes-left := $(all-object-suffixes)
288 include $(o-iterator)
290 define o-iterator-doit
291 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
293 object-suffixes-left := $(all-object-suffixes)
294 include $(o-iterator)
296 define o-iterator-doit
297 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
299 object-suffixes-left := $(all-object-suffixes)
300 include $(o-iterator)
302 define o-iterator-doit
303 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
305 object-suffixes-left := $(all-object-suffixes)
306 include $(o-iterator)
308 # Omit the objpfx rules when building in the source tree, because
309 # objpfx is empty and so these rules just override the ones above.
311 # Define first rules to find the source files in $(objpfx).
312 # Generated source files will end up there.
313 define o-iterator-doit
314 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
316 object-suffixes-left := $(all-object-suffixes)
317 include $(o-iterator)
319 define o-iterator-doit
320 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
322 object-suffixes-left := $(all-object-suffixes)
323 include $(o-iterator)
325 define o-iterator-doit
326 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
328 object-suffixes-left := $(all-object-suffixes)
329 include $(o-iterator)
332 # Generate version maps, but wait until sysdep-subdirs is known
333 ifeq ($(sysd-sorted-done),t)
334 ifeq ($(versioning),yes)
335 -include $(common-objpfx)sysd-versions
336 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
337 common-generated += $(version-maps)
338 postclean-generated += sysd-versions Versions.all abi-versions.h \
339 Versions.def.v.i Versions.def.v Versions.v.i Versions.v
341 ifndef avoid-generated
342 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
343 sysd-versions-force = FORCE
346 # See %.v/%.v.i implicit rules in Makeconfig.
347 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
348 $(wildcard $(add-ons:%=$(..)%/Versions.def))
349 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
350 $(common-objpfx)soversions.i \
351 $(common-objpfx)Versions.def.v
352 { while read which lib version setname; do \
353 test x"$$which" = xDEFAULT || continue; \
354 test -z "$$setname" || echo "$$lib : $$setname"; \
355 done < $(word 2,$^); \
357 } | LC_ALL=C $(AWK) -f $< > $@T
359 # See %.v/%.v.i implicit rules in Makeconfig.
360 $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
361 $(wildcard $(sysdirs:%=%/Versions)) \
362 $(common-objpfx)abi-versions.h \
363 $(sysd-versions-force)
364 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
365 $(common-objpfx)Versions.v \
366 $(..)scripts/versions.awk
367 ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
369 | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
370 -v move_if_change='$(move-if-change)' \
374 endif # avoid-generated
375 endif # $(versioning) = yes
376 endif # sysd-sorted-done
378 # Generate .dT files as we compile.
379 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
380 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
381 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION) $(compile-mkdep-flags)
382 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
383 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
385 # GCC can grok options after the file name, and it looks nicer that way.
386 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
387 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
388 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
389 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
390 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
391 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
392 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
394 # We need this for the output to go in the right place. It will default to
395 # empty if make was configured to work with a cc that can't grok -c and -o
396 # together. You can't compile the C library with such a compiler.
397 OUTPUT_OPTION = -o $@
399 # We need the $(CFLAGS) to be in there to have the right predefines during
400 # the dependency run for C sources. But having it for assembly sources can
401 # get the wrong predefines.
402 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
405 $(make-target-directory)
406 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
407 $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
408 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
409 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
410 mv -f $(@:.d=.T) $@ $(generate-md5)
414 # Continuation lines here are dangerous because they introduce spaces!
415 define sed-remove-objpfx
416 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
417 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
421 # Modify the list of routines we build for different targets
423 ifeq (yesyes,$(build-shared)$(elf))
424 ifndef libc.so-version
425 # Undefine this because it can't work when we libc.so is unversioned.
426 static-only-routines =
430 # Bounded pointer thunks are only built for *.ob
431 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
433 elide-routines.oS += $(filter-out $(static-only-routines),\
434 $(routines) $(aux) $(sysdep_routines)) \
436 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
438 # If we have versioned code we don't need the old versions in any of the
440 elide-routines.o += $(shared-only-routines) $(elide-bp-thunks)
441 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
442 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
443 elide-routines.ob += $(shared-only-routines)
445 # Shared library building.
447 ifeq (yes,$(build-shared))
449 # Reference map file only when versioning is selected and a map file name
451 ifeq ($(versioning),yes)
452 map-file = $(firstword $($(@F:.so=-map)) \
453 $(addprefix $(common-objpfx), \
454 $(filter $(@F:.so=.map),$(version-maps))))
455 load-map-file = $(map-file:%=-Wl,--version-script=%)
458 # Pattern rule to build a shared object from an archive of PIC objects.
459 # This must come after the installation rules so Make doesn't try to
460 # build shared libraries in place from the installed *_pic.a files.
461 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
462 # on other shared objects.
463 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
464 ifneq (,$(findstring aix,$(config-os)))
466 dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
471 define build-shlib-helper
472 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
473 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
474 $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
475 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
476 -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
477 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
478 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
481 ifneq (,$(findstring aix,$(config-os)))
482 define build-shlib-helper
483 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
484 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
485 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
486 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
487 -L$(subst :, -L,$(rpath-link))
494 # binutils only position loadable notes into the first page for binaries,
495 # not for shared objects
496 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
497 $(LINK.o) -shared -Wl,-O1 \
498 -nostdlib -nostartfiles \
499 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
500 -Wl,--verbose 2>&1 | \
502 -e '/^=========/,/^=========/!d;/^=========/d' \
503 $(if $(filter yes,$(have-hash-style)), \
504 -e 's/^.*\.gnu\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
505 -e '/^[ ]*\.hash[ ]*:.*$$/{h;d;}' \
506 -e '/DATA_SEGMENT_ALIGN/{H;g}' \
508 -e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
510 -e 's/^.*\*(\.dynbss).*$$/& \
511 PROVIDE(__start___libc_freeres_ptrs = .); \
512 *(__libc_freeres_ptrs) \
513 PROVIDE(__stop___libc_freeres_ptrs = .);/'\
514 -e 's@^.*\*(\.jcr).*$$@& \
515 PROVIDE(__start___libc_subfreeres = .);\
516 __libc_subfreeres : { *(__libc_subfreeres) }\
517 PROVIDE(__stop___libc_subfreeres = .);\
518 PROVIDE(__start___libc_atexit = .);\
519 __libc_atexit : { *(__libc_atexit) }\
520 PROVIDE(__stop___libc_atexit = .);\
521 PROVIDE(__start___libc_thread_subfreeres = .);\
522 __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
523 PROVIDE(__stop___libc_thread_subfreeres = .);\
524 /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
526 common-generated += shlib.lds
529 $(build-shlib-helper) -o $@ -T $(common-objpfx)shlib.lds \
530 $(csu-objpfx)abi-note.o $(build-shlib-objlist)
533 ifneq (,$(findstring aix,$(config-os)))
535 $(build-shlib-helper) \
537 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
538 $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
541 $(build-shlib-helper) \
542 $(build-shlib-objlist)
547 ifneq (,$(findstring aix,$(config-os)))
548 define build-module-helper
549 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
550 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
552 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
553 -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
556 define build-module-helper
557 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
558 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
559 -B$(csu-objpfx) $(load-map-file) \
560 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
561 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
565 # This macro is similar to build-shlib but it does not define a soname
566 # and it does not depend on the destination name to start with `lib'.
568 # binutils only position loadable notes into the first page for binaries,
569 # not for shared objects
571 $(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
572 $(csu-objpfx)abi-note.o $(build-module-objlist)
574 define build-module-asneeded
575 $(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
576 $(csu-objpfx)abi-note.o \
577 -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed
580 ifneq (,$(findstring aix,$(config-os)))
582 $(build-module-helper) \
584 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
585 $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
590 $(build-module-helper) \
592 $(build-module-objlist)
597 build-module-helper-objlist = \
598 $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
599 $(filter-out %.lds $(map-file) $(+preinit) $(+postinit),$^))
600 whole-archive := -Wl,--whole-archive
602 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
603 build-shlib-objlist = $(build-module-helper-objlist) \
604 $(LDLIBS-$(@F:lib%.so=%).so)
606 # Don't try to use -lc when making libc.so itself.
607 # Also omits crti.o and crtn.o, which we do not want
608 # since we define our own `.init' section specially.
609 LDFLAGS-c.so = -nostdlib -nostartfiles
610 # But we still want to link libc.so against $(libc.so-gnulib).
611 LDLIBS-c.so += $(libc.so-gnulib)
612 # Give libc.so an entry point and make it directly runnable itself.
613 LDFLAGS-c.so += -e __libc_main
614 # If lazy relocation is disabled add the -z now flag.
615 ifeq ($(bind-now),yes)
616 LDFLAGS-c.so += -Wl,-z,now
618 # Pre-link the objects of libc_pic.a so that we can locally resolve
619 # COMMON symbols before we link against ld.so. This is because ld.so
620 # contains some of libc_pic.a already, which will prevent the COMMONs
621 # from being allocated in libc.so, which introduces evil dependencies
622 # between libc.so and ld.so, which can make it impossible to upgrade.
624 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
625 $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
626 $(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
627 # Use our own special initializer and finalizer files for libc.so.
628 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
629 $(common-objpfx)libc_pic.os \
630 $(elfobjdir)/sofini.os \
631 $(elfobjdir)/interp.os $(elfobjdir)/ld.so \
632 $(common-objpfx)shlib.lds
634 ifeq ($(versioning),yes)
635 $(common-objpfx)libc.so: $(common-objpfx)libc.map
637 common-generated += libc.so libc_pic.os
638 ifdef libc.so-version
639 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
641 common-generated += libc.so$(libc.so-version)
645 ifneq (,$(findstring aix,$(config-os)))
646 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
649 dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
650 sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
651 /lib/syscalls.exp > $(common-objpfx)syscalls.exp
652 $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
653 -bE:$(common-objpfx)syscalls.exp \
654 -bI:$(common-objpfx)syscalls.exp \
655 -L$(common-objpfx) -o $@ $^
656 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
657 cp $@ $(common-objpfx)shr.o
658 $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
662 # Figure out the source filenames in this directory.
664 override sources := $(addsuffix .c,\
665 $(filter-out $(elided-routines),\
668 sysdep_routines := $(sysdep_routines)
670 headers := $(headers) $(sysdep_headers)
672 # This is the list of all object files, gotten by
673 # replacing every ".c" in `sources' with a ".o".
674 # We also add bounded-pointer thunks, which are later
675 # elided for all suffixes except for `.ob'.
676 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
677 $(patsubst %,$(bppfx)%.o,\
678 $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
681 # The makefile may define $(extra-libs) with `libfoo libbar'
682 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
684 # extra-lib.mk is included once for each extra lib to define rules
685 # to build it, and to add its objects to the various variables.
686 # During its evaluation, $(lib) is set to the name of the library.
687 extra-libs-left := $(extra-libs)
688 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
692 # The makefile may define $(modules-names) to build additional modules.
693 # These are built with $(build-module), except any in $(modules-names-nobuild).
695 # extra-lib.mk is included once for each extra lib to define rules
696 # to build it, and to add its objects to the various variables.
697 # During its evaluation, $(lib) is set to the name of the library.
698 extra-modules-left := $(modules-names)
699 include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
701 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
702 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
703 $(objpfx)%.os $(common-objpfx)shlib.lds \
704 $(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a
708 +depfiles := $(sources:.c=.d) \
709 $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
710 $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
711 $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
712 ifeq ($(build-programs),yes)
713 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
715 +depfiles := $(addprefix $(objpfx),\
716 $(filter-out $(addsuffix .d,$(omit-deps)),\
718 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
719 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
720 $(wildcard $(all-dt-files:.dt=.d))
722 # This is a funny rule in that it removes its input file.
724 @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
725 mv -f $(@:.d=.T) $@ && \
728 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
729 # They will be generated when they're needed, and trying too early won't work.
730 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
731 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
736 -include $(+depfiles)
740 # Maximize efficiency by minimizing the number of rules.
741 .SUFFIXES: # Clear the suffix list. We don't use suffix rules.
742 # Don't define any builtin rules.
743 MAKEFLAGS := $(MAKEFLAGS)r
745 # Generic rule for making directories.
747 # mkdir isn't smart enough to strip a trailing /.
748 # We always require a mkdir which supports the -p option to avoid error
749 # messages in case of races.
752 # Make sure that object files are not removed
753 # when they are intermediates between sources and library members.
754 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
756 # Make sure that the parent library archive is never removed.
757 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
759 # Use the verbose option of ar and tar when not running silently.
760 ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
766 ARFLAGS := r$(verbose)
767 CREATE_ARFLAGS := cru$(verbose)
769 # This makes all the object files in the parent library archive.
771 .PHONY: lib lib-noranlib
772 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
773 lib-noranlib: libobjs
775 # For object-suffix $o, the list of objects with that suffix.
776 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
777 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
778 $(elide-routines$o)),\
780 $(addprefix $(objpfx),$(o-objects$o))
782 others: $(addprefix $(objpfx),$(install-lib))
786 # Create the stamp$o files to keep the parent makefile happy.
787 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
788 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
789 $(make-target-directory)
793 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
794 # timestamp file; these rules (one explicit rule is generated for each
795 # object suffix) write a list of objects to update in the stamp file.
796 # The parent will then actually add them all to the archive in the
797 # archive rule, below.
798 define o-iterator-doit
799 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
802 $(make-target-directory)
803 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
806 object-suffixes-left := $(object-suffixes-for-libc)
807 include $(o-iterator)
811 # Now define explicit rules to build the library archives; these depend
812 # on the stamp files built above.
813 define o-iterator-doit
814 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
815 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
818 cd $(common-objdir) && \
819 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
822 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
823 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
825 $(subdirs-stamps): subdir_lib;
827 object-suffixes-left = $(object-suffixes-for-libc)
828 include $(o-iterator)
831 # This makes all the object files.
832 .PHONY: objects objs libobjs extra-objs
833 objects objs: libobjs extra-objs
834 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
835 extra-objs: $(addprefix $(objpfx),$(extra-objs))
837 # Canned sequence for building an extra library archive.
838 define build-extra-lib
839 $(patsubst %/,cd % &&,$(objpfx)) \
840 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
841 $(patsubst $(objpfx)%,%,$^)
847 .PHONY: force-install
850 # $(install-lib) are installed from the object directory into $(libdir);
851 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
852 # unless they also appear in $(non-lib.a). $(install-data) are installed as
853 # they are into $(datadir). $(headers) are installed as they are in
854 # $(includedir). $(install-bin), $(install-bin-script) and $(install-sbin)
855 # are installed from the object directory into $(bindir), $(bindir) and
856 # $(sbindir), respectively. $(install-others) and $(install-others-programs)
857 # are absolute path names of files to install; rules to install them are
860 # The simple library name to install libc.a under.
861 # This could be defined by a sysdep Makefile.
867 $(make-target-directory)
868 $(INSTALL_DATA) $< $@
871 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
872 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
873 define make-target-directory
874 $(addprefix $(..)./scripts/mkinstalldirs ,\
875 $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
878 # Any directory (parent or subdir) should install libc.a; this way
879 # "make install" in a subdir is guaranteed to install everything it changes.
880 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
881 $(inst_libdir)/$(patsubst %,$(libtype$o),\
882 $(libprefix)$(libc-name)))
883 install: $(installed-libcs)
884 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
885 $(make-target-directory)
886 $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
887 # Running ranlib after installing makes the __.SYMDEF time stamp up to
888 # date, which avoids messages from some linkers.
891 define do-install-program
892 $(make-target-directory)
893 $(INSTALL_PROGRAM) $< $@.new
897 define do-install-script
898 $(make-target-directory)
899 $(INSTALL_SCRIPT) $< $@.new
903 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
904 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
906 ifeq (yes,$(build-shared))
907 # Find which .so's have versions.
908 versioned := $(strip $(foreach so,$(install-lib.so),\
909 $(patsubst %,$(so),$($(so)-version))))
911 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
912 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
914 # For versioned libraries, we install three files:
915 # $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
916 # $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
917 # $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
918 V := $(firstword $($(subdir)-version) $(version))
919 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
920 $(foreach L,$(install-lib.so-versioned),\
922 $(inst_slibdir)/$(L:.so=)-$V.so \
923 $(inst_slibdir)/$L$($L-version))
925 # Install all the unversioned shared libraries.
926 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
927 $(objpfx)%.so $(+force)
928 $(do-install-program)
930 ifneq ($(findstring -s,$(LN_S)),)
933 $(SHELL) $(..)scripts/rellns-sh $< $@.new
937 # If we have no symbolic links don't bother with rellns-sh.
945 ifeq (yes,$(build-shared))
946 ifeq (no,$(cross-compiling))
947 symbolic-link-prog := $(common-objpfx)elf/sln
948 symbolic-link-list := $(common-objpfx)elf/symlink.list
949 define make-shlib-link
950 echo $(<F) $@ >> $(symbolic-link-list)
952 else # cross-compiling
953 # We need a definition that can be used by elf/Makefile's install rules.
954 symbolic-link-prog = $(LN_S)
957 ifndef make-shlib-link
958 define make-shlib-link
964 ifdef libc.so-version
965 # For a library specified to be version N, install three files:
966 # libc.so -> libc.so.N (e.g. libc.so.6)
967 # libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
969 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
972 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
973 $(do-install-program)
974 install: $(inst_slibdir)/libc.so$(libc.so-version)
976 # This fragment of linker script gives the OUTPUT_FORMAT statement
977 # for the configuration we are building. We put this statement into
978 # the linker scripts we install for -lc et al so that they will not be
979 # used by a link for a different format on a multi-architecture system.
980 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
981 $(common-objpfx)config.make \
982 $(common-objpfx)config.h $(..)Makerules
983 $(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
984 -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
985 | sed -n -f $< > $@.new
988 common-generated += format.lds
991 # What we install as libc.so for programs to link against is in fact a
992 # link script. It contains references for the various libraries we need.
993 # The libc.so object is not complete since some functions are only defined
994 # in libc_nonshared.a.
995 # We need to use absolute paths since otherwise local copies (if they exist)
996 # of the files are taken by the linker.
997 install: $(inst_libdir)/libc.so
998 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
999 $(common-objpfx)libc.so$(libc.so-version) \
1000 $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1001 $(libprefix)$(libc-name)) \
1003 (echo '/* GNU ld script';\
1004 echo ' Use the shared library, but some functions are only in';\
1005 echo ' the static library, so try that secondarily. */';\
1007 echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1008 '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1009 ' AS_NEEDED (' $(slibdir)/$(rtld-installed-name) ') )' \
1016 install: $(inst_slibdir)/libc.so
1017 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1018 $(do-install-program)
1021 ifneq (,$(versioned))
1022 # Produce three sets of rules as above for all the smaller versioned libraries.
1024 define o-iterator-doit
1025 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1027 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1028 ifneq (,$(object-suffixes-left))
1029 include $(o-iterator)
1032 # Make symlinks in the build directory, because the versioned names might
1033 # be referenced by a DT_NEEDED in another library.
1034 define o-iterator-doit
1035 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1037 object-suffixes-left := $(versioned)
1038 include $(o-iterator)
1040 generated += $(foreach o,$(versioned),$o$($o-version))
1042 ifeq (,$($(subdir)-version))
1043 define o-iterator-doit
1044 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1048 object-suffixes-left := $(versioned)
1049 include $(o-iterator)
1051 define o-iterator-doit
1052 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1053 $$(do-install-program)
1055 object-suffixes-left := $(versioned)
1056 include $(o-iterator)
1058 define o-iterator-doit
1059 $(inst_slibdir)/$o$($o-version): \
1060 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1063 object-suffixes-left := $(versioned)
1064 include $(o-iterator)
1066 define o-iterator-doit
1067 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1068 $$(do-install-program)
1070 object-suffixes-left := $(versioned)
1071 include $(o-iterator)
1075 define do-install-so
1076 $(do-install-program)
1077 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1078 $(filter-out %.so,$@))
1081 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1082 $(foreach v,$(so-versions),\
1083 $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1086 $(foreach v,$(so-versions),\
1087 $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1092 $(addprefix $(inst_bindir)/,$(install-bin)): \
1093 $(inst_bindir)/%: $(objpfx)% $(+force)
1094 $(do-install-program)
1096 ifdef install-bin-script
1097 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1098 $(inst_bindir)/%: $(objpfx)% $(+force)
1099 $(do-install-script)
1101 ifdef install-rootsbin
1102 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1103 $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1104 $(do-install-program)
1107 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1108 $(inst_sbindir)/%: $(objpfx)% $(+force)
1109 $(do-install-program)
1112 install-lib.a := $(filter lib%.a,$(install-lib))
1113 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1114 ifdef install-lib-non.a
1115 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1116 $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1120 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1121 $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1123 $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
1127 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1130 headers := $(strip $(headers))
1132 # This implicit rule installs headers from the source directory.
1133 # It may be ignored in preference to rules from sysd-rules to find
1134 # headers in the sysdeps tree.
1135 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1137 $(inst_includedir)/%.h: %.h $(+force)
1139 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1141 headers-nonh := $(filter-out %.h,$(headers))
1143 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1146 endif # headers-nonh
1149 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1150 install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1151 install-data-nosubdir install-headers-nosubdir
1152 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1153 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1154 install-rootsbin-nosubdir: \
1155 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1156 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1157 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1158 $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1159 $(addprefix $(libprefix),$(install-lib-non.a)))
1160 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1161 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1162 install-others-nosubdir: $(install-others)
1163 install-others-programs-nosubdir: $(install-others-programs)
1165 # We need all the `-nosubdir' targets so that `install' in the parent
1166 # doesn't depend on several things which each iterate over the subdirs.
1167 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1168 # subroutine. Then in the parent `install-FOO' also causes subdir makes.
1169 install-%:: install-%-nosubdir ;
1171 .PHONY: install install-no-libc.a-nosubdir
1172 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1173 install-lib-nosubdir install-others-nosubdir
1174 ifeq ($(build-programs),yes)
1175 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1176 install-rootsbin-nosubdir install-sbin-nosubdir \
1177 install-others-programs-nosubdir
1179 install: install-no-libc.a-nosubdir
1181 # Command to compile $< in $(objdir) using the native libraries.
1182 define native-compile
1183 $(make-target-directory)
1184 $(patsubst %/,cd % &&,$(objpfx)) \
1185 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1186 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1189 # Command to compile $< in $(common-objdir) using the native libraries.
1190 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1191 define common-objdir-compile
1192 $(patsubst %/,cd % &&,$(objpfx)) \
1193 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1194 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1197 # We always want to use configuration definitions.
1198 # Note that this is only used for commands running in $(objpfx).
1199 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1201 # Support the GNU standard name for this target.
1204 # Special target to run tests which cannot be run unconditionally.
1205 # Maintainers should use this target.
1209 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1210 ifneq (,$(all-nonlib))
1211 cpp-srcs-left = $(all-nonlib:=.c) $(all-nonlib:=.cc)
1213 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
1216 # The include magic above causes those files to use this variable for flags.
1217 CPPFLAGS-nonlib = -DNOT_IN_libc=1
1220 ifeq ($(versioning),yes)
1221 # Generate normalized lists of symbols, versions, and data sizes.
1222 # This is handy for checking against existing library binaries.
1224 %.symlist: $(..)scripts/abilist.awk %.dynsym
1225 LC_ALL=C $(AWK) -f $^ > $@T
1229 $(OBJDUMP) --dynamic-syms $< > $@T
1232 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1233 $(..)abilist/%.abilist $(objpfx)%.symlist
1235 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1236 $(..)abilist/%.abilist $(common-objpfx)%.symlist
1240 $(AWK) -f $< -v 'config=$(check-abi-config)' \
1241 $(patsubst %,-v 'lastversion=%',$($*-abi-frozen)) \
1242 $(filter %.abilist,$^) \
1243 | { diff -p -U 0 - $(filter %.symlist,$^) $(check-abi-warn) ; }
1245 ifeq ($(enable-check-abi),warn)
1246 check-abi-warn = || echo '*** WARNING: $*.so failed ABI check'
1249 ifeq ($(firstword $(sysd-sorted-done) f)$(firstword $(generating) f),tf)
1250 -include $(common-objpfx)tls.make
1252 ifeq ($(use-thread),yes)
1253 config-tls := thread
1255 check-abi-config := \
1256 $(config-machine)-$(config-vendor)-$(config-os)/$(config-tls)
1259 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1262 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1263 $(common-objpfx)%.symlist
1265 ifndef update-abi-config
1267 @echo 'Run $(MAKE) $@ update-abi-config=REGEXP'; exit 2
1271 LC_ALL=C $(AWK) -v config='$(update-abi-config)' -f $^ \
1272 > $(..)abilist/$*.abilist.new
1273 @if cmp -s $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist 2> /dev/null; \
1274 then rm -f $(..)abilist/$*.abilist.new; \
1275 echo '+++ $(..)abilist/$*.abilist is unchanged'; \
1276 else mv -f $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist; \
1277 echo '*** Now check $*.abilist changes for correctness ***'; \
1282 .PHONY: update-abi check-abi
1283 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1284 check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1286 subdir_check-abi: check-abi
1287 subdir_update-abi: update-abi
1289 check-abi: subdir_check-abi
1290 update-abi: subdir_update-abi
1293 ifeq ($(subdir),elf)
1294 check-abi: check-abi-libc
1295 update-abi: update-abi-libc
1296 common-generated += libc.symlist
1299 ifeq ($(build-shared),yes)
1300 ifneq ($(enable-check-abi),no)
1309 # These will have been set by sysdeps/posix/Makefile.
1315 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1317 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1318 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1319 $(common-objpfx)config.make
1320 $(make-target-directory)
1321 { echo '#include "$(..)posix/bits/posix1_lim.h"'; \
1322 echo '#define _LIBC 1'; \
1323 echo '#include "$(..)misc/sys/uio.h"'; } | \
1324 $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' \
1325 $(+includes) -xc - -o $(@:st=hT)
1326 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
1327 $(@:st=dT) > $(@:st=dt)
1328 mv -f $(@:st=dt) $(@:st=d)
1329 fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; \
1330 filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`; \
1331 iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`; \
1332 fopen_max=$${fopen_max:-16}; \
1333 filename_max=$${filename_max:-1024}; \
1334 if [ -z "$$iov_max" ]; then \
1335 define_iov_max="# undef IOV_MAX"; \
1337 define_iov_max="# define IOV_MAX $$iov_max"; \
1339 sed -e "s/@FOPEN_MAX@/$$fopen_max/" \
1340 -e "s/@FILENAME_MAX@/$$filename_max/" \
1341 -e "s/@L_tmpnam@/$(L_tmpnam)/" \
1342 -e "s/@TMP_MAX@/$(TMP_MAX)/" \
1343 -e "s/@L_ctermid@/$(L_ctermid)/" \
1344 -e "s/@L_cuserid@/$(L_cuserid)/" \
1345 -e "s/@define_IOV_MAX@/$$define_iov_max/" \
1347 $(move-if-change) $(@:st=h.new) $(@:st=h)
1348 # Remove these last so that they can be examined if something went wrong.
1349 rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1353 -include $(stdio_lim:h=d)
1355 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1359 .PHONY: echo-headers
1363 %.bz2: %; bzip2 -9vk $<
1364 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1365 %.xz: %; xz -9evk $<
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) $(extra-test-objs) \
1393 $(install-lib) $(install-lib.so) \
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 $^' $@