1 # Copyright (C) 1991-2010, 2011 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: $(common-objpfx)libc-abis.stamp; @:
115 $(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
116 $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
120 $(base-machine)-$(config-vendor)-$(config-os) \
121 < $(word 2,$^) > $(@:.stamp=.h)T
122 $(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
124 common-generated += $(common-objpfx)libc-abis.h
125 endif # avoid-generated
127 # Make sure the subdirectory for object files gets created.
129 ifeq (,$(wildcard $(objpfx).))
130 before-compile += $(objpfx).
132 $(make-target-directory)
136 # Remove existing files from `before-compile'. Things are added there when
137 # they must exist for dependency generation to work right, but once they
138 # exist there is no further need for every single file to depend on them,
139 # and those gratuitous dependencies result in many gratuitous
141 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
143 # Don't let any before-compile file be an intermediate and get removed.
148 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
151 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
153 common-before-compile = $(before-compile)
157 # If a makefile needs to do something conditional on something that
158 # can only be figured out from headers, write a FOO.make.c input
159 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
160 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
162 # We only generate these in the top-level makefile, to avoid any weirdness
163 # from subdir-specific makefile tweaks creeping in on an update.
164 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
166 (echo '# Generated from $*.make.c by Makerules.'; \
167 $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
168 -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
169 | sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \
170 echo 'common-generated += $(@F)'; \
171 sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
177 sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g' \
178 -e 's@^\.\.\/\([^ \]*\)@$$(..)\1@g'
180 sed-remove-dotdot := -e 's@ *\([^ \/$$][^ \]*\)@ $$(..)\1@g' \
181 -e 's@^\([^ \/$$][^ \]*\)@$$(..)\1@g'
185 ifdef gen-as-const-headers
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@@@.*$$/#define \1 \2/p' \
195 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
197 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
198 $(@:.h=.h.d)T > $(@:.h=.h.d)T2
200 mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
201 mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
202 vpath %.sym $(sysdirs)
203 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
205 tests += $(gen-as-const-headers:%.sym=test-as-const-%)
206 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
207 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
208 %.sym $(common-objpfx)%.h
209 ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
210 $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
211 echo '#include "$(..)test-skeleton.c"') > $@T
215 # Generate an ordered list of implicit rules which find the source files in
216 # each sysdep directory. The old method was to use vpath to search all the
217 # sysdep directories. However, that had the problem that a .S file in a
218 # later directory would be chosen over a .c file in an earlier directory,
219 # which does not preserve the desired sysdeps ordering behavior.
221 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
222 # patterns matching sysdep directories whose assembly source files should
224 ifdef inhibit-sysdep-asm
225 define check-inhibit-asm
226 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) asm= ;; esac;
230 -include $(common-objpfx)sysd-rules
231 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
232 # The value of $(+sysdep_dirs) the sysd-rules was computed for
233 # differs from the one we are using now. So force a rebuild of sysd-rules.
234 sysd-rules-force = FORCE
237 $(common-objpfx)sysd-rules: $(common-objpfx)config.make $(..)Makerules \
238 $(sysdep-makefiles) $(sysdep-makeconfigs) \
241 (echo 'sysd-rules-sysdirs := $(config-sysdirs)'; \
242 for dir in $(config-sysdirs); do \
245 *) dir="\$$(..)$$dir" ;; \
248 $(check-inhibit-asm) \
249 for o in $(all-object-suffixes); do \
250 set $(subst :, ,$(sysd-rules-patterns)); \
251 while [ $$# -ge 2 ]; do \
254 v=$${t%%%}; [ x"$$v" = x ] || v="\$$($${v}CPPFLAGS)"; \
255 for s in $$asm .c; do \
256 echo "\$$(objpfx)$$t$$o: $$dir/$$d$$s \$$(before-compile)"; \
257 echo " \$$(compile-command$$s) $$v"; \
261 echo "\$$(inst_includedir)/%.h: $$dir/%.h \$$(+force)"; \
262 echo " \$$(do-install)"; \
264 echo 'sysd-rules-done = t') > $@T
267 ifndef sysd-rules-done
268 # Don't do deps until this exists, because it provides rules to make the deps.
272 define o-iterator-doit
273 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
275 object-suffixes-left := $(all-object-suffixes)
276 include $(o-iterator)
278 define o-iterator-doit
279 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
281 object-suffixes-left := $(all-object-suffixes)
282 include $(o-iterator)
284 define o-iterator-doit
285 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
287 object-suffixes-left := $(all-object-suffixes)
288 include $(o-iterator)
290 define o-iterator-doit
291 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
293 object-suffixes-left := $(all-object-suffixes)
294 include $(o-iterator)
296 # Omit the objpfx rules when building in the source tree, because
297 # objpfx is empty and so these rules just override the ones above.
299 # Define first rules to find the source files in $(objpfx).
300 # Generated source files will end up there.
301 define o-iterator-doit
302 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
304 object-suffixes-left := $(all-object-suffixes)
305 include $(o-iterator)
307 define o-iterator-doit
308 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
310 object-suffixes-left := $(all-object-suffixes)
311 include $(o-iterator)
313 define o-iterator-doit
314 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
316 object-suffixes-left := $(all-object-suffixes)
317 include $(o-iterator)
320 # Generate version maps, but wait until sysdep-subdirs is known
321 ifeq ($(sysd-sorted-done),t)
322 ifeq ($(versioning),yes)
323 -include $(common-objpfx)sysd-versions
324 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
325 common-generated += $(version-maps)
326 postclean-generated += sysd-versions Versions.all abi-versions.h \
327 Versions.def.v.i Versions.def.v Versions.v.i Versions.v
329 ifndef avoid-generated
330 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
331 sysd-versions-force = FORCE
334 # See %.v/%.v.i implicit rules in Makeconfig.
335 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
336 $(wildcard $(add-ons:%=$(..)%/Versions.def))
337 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
338 $(common-objpfx)soversions.i \
339 $(common-objpfx)Versions.def.v
340 { while read which lib version setname; do \
341 test x"$$which" = xDEFAULT || continue; \
342 test -z "$$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 $(subdirs:%=$(..)%/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 = $(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 -MT $@
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)
371 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
373 # GCC can grok options after the file name, and it looks nicer that way.
374 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
375 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
376 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
377 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
378 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
379 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
380 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
382 # We need this for the output to go in the right place. It will default to
383 # empty if make was configured to work with a cc that can't grok -c and -o
384 # together. You can't compile the C library with such a compiler.
385 OUTPUT_OPTION = -o $@
387 # We need the $(CFLAGS) to be in there to have the right predefines during
388 # the dependency run for C sources. But having it for assembly sources can
389 # get the wrong predefines.
390 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
393 $(make-target-directory)
394 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
395 $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
396 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
397 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
398 mv -f $(@:.d=.T) $@ $(generate-md5)
402 # Continuation lines here are dangerous because they introduce spaces!
403 define sed-remove-objpfx
404 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
405 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
409 # Modify the list of routines we build for different targets
411 ifeq (yesyes,$(build-shared)$(elf))
412 ifndef libc.so-version
413 # Undefine this because it can't work when we libc.so is unversioned.
414 static-only-routines =
418 # Bounded pointer thunks are only built for *.ob
419 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
421 elide-routines.oS += $(filter-out $(static-only-routines),\
422 $(routines) $(aux) $(sysdep_routines)) \
424 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
426 # If we have versioned code we don't need the old versions in any of the
428 elide-routines.o += $(shared-only-routines) $(elide-bp-thunks)
429 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
430 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
431 elide-routines.ob += $(shared-only-routines)
433 # Shared library building.
435 ifeq (yes,$(build-shared))
437 # Reference map file only when versioning is selected and a map file name
439 ifeq ($(versioning),yes)
440 map-file = $(firstword $($(@F:.so=-map)) \
441 $(addprefix $(common-objpfx), \
442 $(filter $(@F:.so=.map),$(version-maps))))
443 load-map-file = $(map-file:%=-Wl,--version-script=%)
446 # Pattern rule to build a shared object from an archive of PIC objects.
447 # This must come after the installation rules so Make doesn't try to
448 # build shared libraries in place from the installed *_pic.a files.
449 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
450 # on other shared objects.
451 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
452 ifneq (,$(findstring aix,$(config-os)))
454 dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
459 define build-shlib-helper
460 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
461 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
462 $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
463 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
464 -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
465 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
466 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
469 ifneq (,$(findstring aix,$(config-os)))
470 define build-shlib-helper
471 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
472 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
473 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
474 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
475 -L$(subst :, -L,$(rpath-link))
482 ifeq (yes,$(use-default-link))
483 # If the linker is good enough, we can let it use its default linker script.
487 # binutils only position loadable notes into the first page for binaries,
488 # not for shared objects
489 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
490 $(LINK.o) -shared -Wl,-O1 \
491 -nostdlib -nostartfiles \
492 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
493 -Wl,--verbose 2>&1 | \
495 -e '/^=========/,/^=========/!d;/^=========/d' \
496 $(if $(filter yes,$(have-hash-style)), \
497 -e 's/^.*\.gnu\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
498 -e '/^[ ]*\.hash[ ]*:.*$$/{h;d;}' \
499 -e '/DATA_SEGMENT_ALIGN/{H;g}' \
501 -e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
503 -e 's/^.*\*(\.dynbss).*$$/& \
504 PROVIDE(__start___libc_freeres_ptrs = .); \
505 *(__libc_freeres_ptrs) \
506 PROVIDE(__stop___libc_freeres_ptrs = .);/'\
507 -e 's@^.*\*(\.jcr).*$$@& \
508 PROVIDE(__start___libc_subfreeres = .);\
509 __libc_subfreeres : { *(__libc_subfreeres) }\
510 PROVIDE(__stop___libc_subfreeres = .);\
511 PROVIDE(__start___libc_atexit = .);\
512 __libc_atexit : { *(__libc_atexit) }\
513 PROVIDE(__stop___libc_atexit = .);\
514 PROVIDE(__start___libc_thread_subfreeres = .);\
515 __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
516 PROVIDE(__stop___libc_thread_subfreeres = .);\
517 /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
520 common-generated += shlib.lds
522 shlib-lds = $(common-objpfx)shlib.lds
523 shlib-lds-flags = -T $(shlib-lds)
527 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
528 $(csu-objpfx)abi-note.o $(build-shlib-objlist)
531 ifneq (,$(findstring aix,$(config-os)))
533 $(build-shlib-helper) \
535 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
536 $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
539 $(build-shlib-helper) \
540 $(build-shlib-objlist)
545 ifneq (,$(findstring aix,$(config-os)))
546 define build-module-helper
547 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
548 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
550 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
551 -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
554 define build-module-helper
555 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
556 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
557 -B$(csu-objpfx) $(load-map-file) \
558 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
559 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
563 # This macro is similar to build-shlib but it does not define a soname
564 # and it does not depend on the destination name to start with `lib'.
566 # binutils only position loadable notes into the first page for binaries,
567 # not for shared objects
569 $(build-module-helper) -o $@ $(shlib-lds-flags) \
570 $(csu-objpfx)abi-note.o $(build-module-objlist)
572 define build-module-asneeded
573 $(build-module-helper) -o $@ $(shlib-lds-flags) \
574 $(csu-objpfx)abi-note.o \
575 -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed
578 ifneq (,$(findstring aix,$(config-os)))
580 $(build-module-helper) \
582 $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
583 $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
588 $(build-module-helper) \
590 $(build-module-objlist)
595 build-module-helper-objlist = \
596 $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
597 $(filter-out %.lds $(map-file) $(+preinit) $(+postinit),$^))
599 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
600 build-shlib-objlist = $(build-module-helper-objlist) \
601 $(LDLIBS-$(@F:lib%.so=%).so)
603 # Don't try to use -lc when making libc.so itself.
604 # Also omits crti.o and crtn.o, which we do not want
605 # since we define our own `.init' section specially.
606 LDFLAGS-c.so = -nostdlib -nostartfiles
607 # But we still want to link libc.so against $(libc.so-gnulib).
608 LDLIBS-c.so += $(libc.so-gnulib)
609 # Give libc.so an entry point and make it directly runnable itself.
610 LDFLAGS-c.so += -e __libc_main
611 # If lazy relocation is disabled add the -z now flag.
612 ifeq ($(bind-now),yes)
613 LDFLAGS-c.so += -Wl,-z,now
615 # Pre-link the objects of libc_pic.a so that we can locally resolve
616 # COMMON symbols before we link against ld.so. This is because ld.so
617 # contains some of libc_pic.a already, which will prevent the COMMONs
618 # from being allocated in libc.so, which introduces evil dependencies
619 # between libc.so and ld.so, which can make it impossible to upgrade.
621 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
622 $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
623 $(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
625 ifeq (,$(strip $(shlib-lds-flags)))
626 # Generate a list of -R options to excise .gnu.glibc-stub.* sections.
627 $(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
629 $(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
632 # Apply those -R options.
633 $(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
634 $(common-objpfx)libc_pic.os
636 generated += libc_pic.opts libc_pic.os.clean
638 libc_pic_clean := .clean
641 # Use our own special initializer and finalizer files for libc.so.
642 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
643 $(common-objpfx)libc_pic.os$(libc_pic_clean) \
644 $(elfobjdir)/sofini.os \
645 $(elfobjdir)/interp.os $(elfobjdir)/ld.so \
648 ifeq ($(versioning),yes)
649 $(common-objpfx)libc.so: $(common-objpfx)libc.map
651 common-generated += libc.so libc_pic.os
652 ifdef libc.so-version
653 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
655 common-generated += libc.so$(libc.so-version)
659 ifneq (,$(findstring aix,$(config-os)))
660 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
663 dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
664 sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
665 /lib/syscalls.exp > $(common-objpfx)syscalls.exp
666 $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
667 -bE:$(common-objpfx)syscalls.exp \
668 -bI:$(common-objpfx)syscalls.exp \
669 -L$(common-objpfx) -o $@ $^
670 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
671 cp $@ $(common-objpfx)shr.o
672 $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
676 # Figure out the source filenames in this directory.
678 override sources := $(addsuffix .c,\
679 $(filter-out $(elided-routines),\
682 sysdep_routines := $(sysdep_routines)
684 headers := $(headers) $(sysdep_headers)
686 # This is the list of all object files, gotten by
687 # replacing every ".c" in `sources' with a ".o".
688 # We also add bounded-pointer thunks, which are later
689 # elided for all suffixes except for `.ob'.
690 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
691 $(patsubst %,$(bppfx)%.o,\
692 $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
695 # The makefile may define $(extra-libs) with `libfoo libbar'
696 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
698 # extra-lib.mk is included once for each extra lib to define rules
699 # to build it, and to add its objects to the various variables.
700 # During its evaluation, $(lib) is set to the name of the library.
701 extra-libs-left := $(extra-libs)
702 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
706 # The makefile may define $(modules-names) to build additional modules.
707 # These are built with $(build-module), except any in $(modules-names-nobuild).
709 # extra-lib.mk is included once for each extra lib to define rules
710 # to build it, and to add its objects to the various variables.
711 # During its evaluation, $(lib) is set to the name of the library.
712 extra-modules-left := $(modules-names)
713 include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
715 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
716 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
717 $(objpfx)%.os $(shlib-lds) \
718 $(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a
722 +depfiles := $(sources:.c=.d) \
723 $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
724 $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
725 $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
726 ifeq ($(build-programs),yes)
727 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
729 +depfiles := $(addprefix $(objpfx),\
730 $(filter-out $(addsuffix .d,$(omit-deps)),\
732 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
733 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
734 $(wildcard $(all-dt-files:.dt=.d))
736 # This is a funny rule in that it removes its input file.
738 @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
739 mv -f $(@:.d=.T) $@ && \
742 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
743 # They will be generated when they're needed, and trying too early won't work.
744 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
745 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
750 -include $(+depfiles)
754 # Maximize efficiency by minimizing the number of rules.
755 .SUFFIXES: # Clear the suffix list. We don't use suffix rules.
756 # Don't define any builtin rules.
757 MAKEFLAGS := $(MAKEFLAGS)r
759 # Generic rule for making directories.
761 # mkdir isn't smart enough to strip a trailing /.
762 # We always require a mkdir which supports the -p option to avoid error
763 # messages in case of races.
766 # Make sure that object files are not removed
767 # when they are intermediates between sources and library members.
768 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
770 # Make sure that the parent library archive is never removed.
771 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
773 # Use the verbose option of ar and tar when not running silently.
774 ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
780 ARFLAGS := r$(verbose)
781 CREATE_ARFLAGS := cru$(verbose)
783 # This makes all the object files in the parent library archive.
785 .PHONY: lib lib-noranlib
786 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
787 lib-noranlib: libobjs
789 # For object-suffix $o, the list of objects with that suffix.
790 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
791 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
792 $(elide-routines$o)),\
794 $(addprefix $(objpfx),$(o-objects$o))
796 others: $(addprefix $(objpfx),$(install-lib))
800 # Create the stamp$o files to keep the parent makefile happy.
801 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
802 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
803 $(make-target-directory)
807 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
808 # timestamp file; these rules (one explicit rule is generated for each
809 # object suffix) write a list of objects to update in the stamp file.
810 # The parent will then actually add them all to the archive in the
811 # archive rule, below.
812 define o-iterator-doit
813 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
816 $(make-target-directory)
817 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
820 object-suffixes-left := $(object-suffixes-for-libc)
821 include $(o-iterator)
825 # Now define explicit rules to build the library archives; these depend
826 # on the stamp files built above.
827 define o-iterator-doit
828 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
829 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
832 cd $(common-objdir) && \
833 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
835 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
836 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
838 $(subdirs-stamps): subdir_lib;
840 object-suffixes-left = $(object-suffixes-for-libc)
841 include $(o-iterator)
844 # This makes all the object files.
845 .PHONY: objects objs libobjs extra-objs
846 objects objs: libobjs extra-objs
847 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
848 extra-objs: $(addprefix $(objpfx),$(extra-objs))
850 # Canned sequence for building an extra library archive.
851 define build-extra-lib
852 $(patsubst %/,cd % &&,$(objpfx)) \
853 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
854 $(patsubst $(objpfx)%,%,$^)
859 .PHONY: force-install
862 # $(install-lib) are installed from the object directory into $(libdir);
863 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
864 # unless they also appear in $(non-lib.a). $(install-data) are installed as
865 # they are into $(datadir). $(headers) are installed as they are in
866 # $(includedir). $(install-bin), $(install-bin-script) and $(install-sbin)
867 # are installed from the object directory into $(bindir), $(bindir) and
868 # $(sbindir), respectively. $(install-others) and $(install-others-programs)
869 # are absolute path names of files to install; rules to install them are
872 # The simple library name to install libc.a under.
873 # This could be defined by a sysdep Makefile.
879 $(make-target-directory)
880 $(INSTALL_DATA) $< $@
883 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
884 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
885 define make-target-directory
886 $(addprefix $(..)./scripts/mkinstalldirs ,\
887 $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
890 # Any directory (parent or subdir) should install libc.a; this way
891 # "make install" in a subdir is guaranteed to install everything it changes.
892 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
893 $(inst_libdir)/$(patsubst %,$(libtype$o),\
894 $(libprefix)$(libc-name)))
895 install: $(installed-libcs)
896 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
897 $(make-target-directory)
898 $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
900 define do-install-program
901 $(make-target-directory)
902 $(INSTALL_PROGRAM) $< $@.new
906 define do-install-script
907 $(make-target-directory)
908 $(INSTALL_SCRIPT) $< $@.new
912 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
913 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
915 ifeq (yes,$(build-shared))
916 # Find which .so's have versions.
917 versioned := $(strip $(foreach so,$(install-lib.so),\
918 $(patsubst %,$(so),$($(so)-version))))
920 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
921 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
923 # For versioned libraries, we install three files:
924 # $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
925 # $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
926 # $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
927 V := $(firstword $($(subdir)-version) $(version))
928 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
929 $(foreach L,$(install-lib.so-versioned),\
931 $(inst_slibdir)/$(L:.so=)-$V.so \
932 $(inst_slibdir)/$L$($L-version))
934 # Install all the unversioned shared libraries.
935 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
936 $(objpfx)%.so $(+force)
937 $(do-install-program)
939 ifneq ($(findstring -s,$(LN_S)),)
942 $(SHELL) $(..)scripts/rellns-sh $< $@.new
946 # If we have no symbolic links don't bother with rellns-sh.
954 ifeq (yes,$(build-shared))
955 ifeq (no,$(cross-compiling))
956 symbolic-link-prog := $(common-objpfx)elf/sln
957 symbolic-link-list := $(common-objpfx)elf/symlink.list
958 define make-shlib-link
959 echo $(<F) $@ >> $(symbolic-link-list)
961 else # cross-compiling
962 # We need a definition that can be used by elf/Makefile's install rules.
963 symbolic-link-prog = $(LN_S)
966 ifndef make-shlib-link
967 define make-shlib-link
973 ifdef libc.so-version
974 # For a library specified to be version N, install three files:
975 # libc.so -> libc.so.N (e.g. libc.so.6)
976 # libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
978 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
981 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
982 $(do-install-program)
983 install: $(inst_slibdir)/libc.so$(libc.so-version)
985 # This fragment of linker script gives the OUTPUT_FORMAT statement
986 # for the configuration we are building. We put this statement into
987 # the linker scripts we install for -lc et al so that they will not be
988 # used by a link for a different format on a multi-architecture system.
989 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
990 $(common-objpfx)config.make \
991 $(common-objpfx)config.h $(..)Makerules
992 ifneq (unknown,$(output-format))
993 echo > $@.new 'OUTPUT_FORMAT($(output-format))'
995 $(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
996 -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
997 | sed -n -f $< > $@.new
1002 common-generated += format.lds
1005 # What we install as libc.so for programs to link against is in fact a
1006 # link script. It contains references for the various libraries we need.
1007 # The libc.so object is not complete since some functions are only defined
1008 # in libc_nonshared.a.
1009 # We need to use absolute paths since otherwise local copies (if they exist)
1010 # of the files are taken by the linker.
1011 install: $(inst_libdir)/libc.so
1012 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
1013 $(common-objpfx)libc.so$(libc.so-version) \
1014 $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1015 $(libprefix)$(libc-name)) \
1017 (echo '/* GNU ld script';\
1018 echo ' Use the shared library, but some functions are only in';\
1019 echo ' the static library, so try that secondarily. */';\
1021 echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1022 '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1023 ' AS_NEEDED (' $(slibdir)/$(rtld-installed-name) ') )' \
1030 install: $(inst_slibdir)/libc.so
1031 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1032 $(do-install-program)
1035 ifneq (,$(versioned))
1036 # Produce three sets of rules as above for all the smaller versioned libraries.
1038 define o-iterator-doit
1039 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1041 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1042 ifneq (,$(object-suffixes-left))
1043 include $(o-iterator)
1046 # Make symlinks in the build directory, because the versioned names might
1047 # be referenced by a DT_NEEDED in another library.
1048 define o-iterator-doit
1049 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1051 object-suffixes-left := $(versioned)
1052 include $(o-iterator)
1054 generated += $(foreach o,$(versioned),$o$($o-version))
1056 ifeq (,$($(subdir)-version))
1057 define o-iterator-doit
1058 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1062 object-suffixes-left := $(versioned)
1063 include $(o-iterator)
1065 define o-iterator-doit
1066 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1067 $$(do-install-program)
1069 object-suffixes-left := $(versioned)
1070 include $(o-iterator)
1072 define o-iterator-doit
1073 $(inst_slibdir)/$o$($o-version): \
1074 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1077 object-suffixes-left := $(versioned)
1078 include $(o-iterator)
1080 define o-iterator-doit
1081 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1082 $$(do-install-program)
1084 object-suffixes-left := $(versioned)
1085 include $(o-iterator)
1089 define do-install-so
1090 $(do-install-program)
1091 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1092 $(filter-out %.so,$@))
1095 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1096 $(foreach v,$(so-versions),\
1097 $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1100 $(foreach v,$(so-versions),\
1101 $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1106 $(addprefix $(inst_bindir)/,$(install-bin)): \
1107 $(inst_bindir)/%: $(objpfx)% $(+force)
1108 $(do-install-program)
1110 ifdef install-bin-script
1111 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1112 $(inst_bindir)/%: $(objpfx)% $(+force)
1113 $(do-install-script)
1115 ifdef install-rootsbin
1116 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1117 $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1118 $(do-install-program)
1121 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1122 $(inst_sbindir)/%: $(objpfx)% $(+force)
1123 $(do-install-program)
1126 install-lib.a := $(filter lib%.a,$(install-lib))
1127 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1128 ifdef install-lib-non.a
1129 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1130 $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1134 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1135 $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1140 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1143 headers := $(strip $(headers))
1145 # This implicit rule installs headers from the source directory.
1146 # It may be ignored in preference to rules from sysd-rules to find
1147 # headers in the sysdeps tree.
1148 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1150 $(inst_includedir)/%.h: %.h $(+force)
1152 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1154 headers-nonh := $(filter-out %.h,$(headers))
1156 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1159 endif # headers-nonh
1162 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1163 install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1164 install-data-nosubdir install-headers-nosubdir
1165 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1166 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1167 install-rootsbin-nosubdir: \
1168 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1169 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1170 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1171 $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1172 $(addprefix $(libprefix),$(install-lib-non.a)))
1173 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1174 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1175 install-others-nosubdir: $(install-others)
1176 install-others-programs-nosubdir: $(install-others-programs)
1178 # We need all the `-nosubdir' targets so that `install' in the parent
1179 # doesn't depend on several things which each iterate over the subdirs.
1180 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1181 # subroutine. Then in the parent `install-FOO' also causes subdir makes.
1182 install-%:: install-%-nosubdir ;
1184 .PHONY: install install-no-libc.a-nosubdir
1185 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1186 install-lib-nosubdir install-others-nosubdir
1187 ifeq ($(build-programs),yes)
1188 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1189 install-rootsbin-nosubdir install-sbin-nosubdir \
1190 install-others-programs-nosubdir
1192 install: install-no-libc.a-nosubdir
1194 # Command to compile $< in $(objdir) using the native libraries.
1195 define native-compile
1196 $(make-target-directory)
1197 $(patsubst %/,cd % &&,$(objpfx)) \
1198 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1199 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1202 # Command to compile $< in $(common-objdir) using the native libraries.
1203 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1204 define common-objdir-compile
1205 $(patsubst %/,cd % &&,$(objpfx)) \
1206 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1207 $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1210 # We always want to use configuration definitions.
1211 # Note that this is only used for commands running in $(objpfx).
1212 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1214 # Support the GNU standard name for this target.
1217 # Special target to run tests which cannot be run unconditionally.
1218 # Maintainers should use this target.
1222 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1223 ifneq (,$(all-nonlib))
1224 cpp-srcs-left = $(all-nonlib:=.c) $(all-nonlib:=.cc)
1226 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
1229 # The include magic above causes those files to use this variable for flags.
1230 CPPFLAGS-nonlib = -DNOT_IN_libc=1
1233 ifeq ($(versioning),yes)
1234 # Generate normalized lists of symbols, versions, and data sizes.
1235 # This is handy for checking against existing library binaries.
1237 %.symlist: $(..)scripts/abilist.awk %.dynsym
1238 LC_ALL=C $(AWK) -f $^ > $@T
1242 $(OBJDUMP) --dynamic-syms $< > $@T
1245 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1246 $(..)abilist/%.abilist $(objpfx)%.symlist
1248 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1249 $(..)abilist/%.abilist $(common-objpfx)%.symlist
1253 $(AWK) -f $< -v 'config=$(check-abi-config)' \
1254 $(patsubst %,-v 'lastversion=%',$($*-abi-frozen)) \
1255 $(filter %.abilist,$^) \
1256 | { diff -p -U 0 - $(filter %.symlist,$^) $(check-abi-warn) ; }
1258 ifeq ($(enable-check-abi),warn)
1259 check-abi-warn = || echo '*** WARNING: $*.so failed ABI check'
1262 ifeq ($(firstword $(sysd-sorted-done) f)$(firstword $(generating) f),tf)
1263 config-tls := thread
1264 check-abi-config := \
1265 $(config-machine)-$(config-vendor)-$(config-os)/$(config-tls)
1268 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1271 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1272 $(common-objpfx)%.symlist
1274 ifndef update-abi-config
1276 @echo 'Run $(MAKE) $@ update-abi-config=REGEXP'; exit 2
1280 LC_ALL=C $(AWK) -v config='$(update-abi-config)' -f $^ \
1281 > $(..)abilist/$*.abilist.new
1282 @if cmp -s $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist 2> /dev/null; \
1283 then rm -f $(..)abilist/$*.abilist.new; \
1284 echo '+++ $(..)abilist/$*.abilist is unchanged'; \
1285 else mv -f $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist; \
1286 echo '*** Now check $*.abilist changes for correctness ***'; \
1291 .PHONY: update-abi check-abi
1292 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1293 check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1295 subdir_check-abi: check-abi
1296 subdir_update-abi: update-abi
1298 check-abi: subdir_check-abi
1299 update-abi: subdir_update-abi
1302 ifeq ($(subdir),elf)
1303 check-abi: check-abi-libc
1304 update-abi: update-abi-libc
1305 common-generated += libc.symlist
1308 ifeq ($(build-shared),yes)
1309 ifneq ($(enable-check-abi),no)
1318 # These will have been set by sysdeps/posix/Makefile.
1324 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1326 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1327 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1328 $(common-objpfx)config.make
1329 $(make-target-directory)
1330 { echo '#include "$(..)posix/bits/posix1_lim.h"'; \
1331 echo '#define _LIBC 1'; \
1332 echo '#include "$(..)misc/sys/uio.h"'; } | \
1333 $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' \
1334 $(+includes) -xc - -o $(@:st=hT)
1335 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
1336 $(@:st=dT) > $(@:st=dt)
1337 mv -f $(@:st=dt) $(@:st=d)
1338 fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; \
1339 filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`; \
1340 iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`; \
1341 fopen_max=$${fopen_max:-16}; \
1342 filename_max=$${filename_max:-1024}; \
1343 if [ -z "$$iov_max" ]; then \
1344 define_iov_max="# undef IOV_MAX"; \
1346 define_iov_max="# define IOV_MAX $$iov_max"; \
1348 sed -e "s/@FOPEN_MAX@/$$fopen_max/" \
1349 -e "s/@FILENAME_MAX@/$$filename_max/" \
1350 -e "s/@L_tmpnam@/$(L_tmpnam)/" \
1351 -e "s/@TMP_MAX@/$(TMP_MAX)/" \
1352 -e "s/@L_ctermid@/$(L_ctermid)/" \
1353 -e "s/@L_cuserid@/$(L_cuserid)/" \
1354 -e "s/@define_IOV_MAX@/$$define_iov_max/" \
1356 $(move-if-change) $(@:st=h.new) $(@:st=h)
1357 # Remove these last so that they can be examined if something went wrong.
1358 rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1362 -include $(stdio_lim:h=d)
1364 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1368 .PHONY: echo-headers
1372 %.bz2: %; bzip2 -9vk $<
1373 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1374 %.xz: %; xz -9evk $<
1376 # Common cleaning targets.
1378 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1380 mostlyclean: common-mostlyclean
1383 -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1385 $(addsuffix -bp.out,$(tests) $(xtests) \
1388 # Remove the object files.
1390 -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1391 $(others) $(sysdep-others) stubs \
1392 $(addsuffix .o,$(tests) $(xtests) \
1393 $(test-srcs) $(others) \
1395 $(addsuffix -bp,$(tests) $(xtests) \
1397 $(addsuffix .out,$(tests) $(xtests) \
1399 $(addsuffix -bp.out,$(tests) $(xtests) \
1401 -rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1402 $(install-lib) $(install-lib.so) \
1403 $(install-lib.so:%.so=%_pic.a))
1405 -rm -f $(objpfx)rtld-*.os
1408 $(foreach o,$(object-suffixes-for-libc),
1409 -rm -f $(objpfx)stamp$o $(o-objects))
1412 # Also remove the dependencies and generated source files.
1413 common-clean: common-mostlyclean
1414 -rm -f $(addprefix $(objpfx),$(generated))
1415 -rm -f $(objpfx)*.d $(objpfx)*.dt
1416 -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1417 -rm -f $(addprefix $(common-objpfx),$(common-generated))
1419 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1420 # for each function which is a stub. We grovel over all the .d files
1421 # looking for references to <stub-tag.h>. Then we grovel over each
1422 # referenced source file to see what stub function it defines.
1425 .PHONY: stubs # The parent Makefile calls this target.
1426 stubs: $(objpfx)stubs
1428 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1429 $(addprefix $(objpfx),$(extra-objs))
1430 $(objpfx)stubs: $(objs-for-stubs)
1431 ifneq (,$(strip $(objs-for-stubs)))
1432 (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1433 $(AWK) '/\.gnu\.glibc-stub\./ { \
1434 sub(/\.gnu\.glibc-stub\./, "", $$2); \
1436 END { for (s in stubs) print "#define __stub_" s }' > $@T
1442 ifneq (,$(strip $(gpl2lgpl)))
1443 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1444 # Snarf from the master source and frob the copying notice.
1445 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1447 # So I don't edit them by mistake.