1 # Copyright (C) 1991-2014 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, see
16 # <http://www.gnu.org/licenses/>.
19 # Common rules for making the GNU C library. This file is included
20 # by the top-level Makefile and by all subdirectory makefiles
24 This makefile requires GNU Make.
27 REQUIRED_MAKE_VERSION = 3.74
28 REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))
30 ifneq ($(REQUIRED_MAKE_VERSION), \
31 $(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
32 Wrong GNU Make version. See above for the version needed.
40 # If `sources' was defined by the parent makefile, undefine it so
41 # we will later get it from wildcard search in this directory.
42 ifneq "$(findstring env,$(origin sources))" ""
47 PATH := this definition should take precedence over $(oPATH)
48 ifeq ($(PATH),$(oPATH))
49 You must not use the -e flag when building the GNU C library.
54 ifndef +included-Makeconfig
55 include $(..)Makeconfig
58 # This variable is used in ``include $(o-iterator)'' after defining
59 # $(o-iterator-doit) to produce some desired rule using $o for the object
60 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
61 # is produced for each object suffix in use.
62 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
64 # Include any system-specific makefiles.
66 # This is here so things in sysdep Makefiles can easily depend on foo.h as
67 # appropriate and not worry about where foo.h comes from, which may be
68 # system dependent and not known by that Makefile.
69 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
70 $(+sysdep_dirs) $(..)))
72 # The same is true for RPC source files.
73 vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
74 $(+sysdep_dirs) $(..)))
76 # Some sysdep makefiles use this to distinguish being included here from
77 # being included individually by a subdir makefile (hurd/Makefile needs this).
80 sysdep-makefiles := $(wildcard $(sysdirs:=/Makefile))
81 ifneq (,$(sysdep-makefiles))
82 include $(sysdep-makefiles)
86 # Reorder before-compile so that mach things come first, and hurd things
87 # second, before all else. The mach and hurd subdirectories have many
88 # generated header files which the much of rest of the library depends on,
89 # so it is best to build them first (and mach before hurd, at that).
90 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
92 $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
95 # Even before that, we need abi-versions.h which is generated right here.
96 ifeq ($(build-shared),yes)
97 ifndef avoid-generated
98 before-compile := $(common-objpfx)abi-versions.h $(before-compile)
99 $(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
100 $(common-objpfx)Versions.all
101 LC_ALL=C $(AWK) -f $^ > $@T
104 $(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
105 sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
106 $(common-objpfx)abi-versions.h > $@T
108 endif # avoid-generated
109 endif # $(build-shared) = yes
111 ifndef avoid-generated
112 before-compile := $(common-objpfx)libc-abis.h $(before-compile)
113 $(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @:
114 $(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
115 $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
119 $(base-machine)-$(config-vendor)-$(config-os) \
120 < $(word 2,$^) > $(@:.stamp=.h)T
121 $(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
123 common-generated += $(common-objpfx)libc-abis.h
124 endif # avoid-generated
126 # Make sure the subdirectory for object files gets created.
128 ifeq (,$(wildcard $(objpfx).))
129 before-compile += $(objpfx).
131 $(make-target-directory)
135 # Remove existing files from `before-compile'. Things are added there when
136 # they must exist for dependency generation to work right, but once they
137 # exist there is no further need for every single file to depend on them,
138 # and those gratuitous dependencies result in many gratuitous
140 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
142 # Don't let any before-compile file be an intermediate and get removed.
147 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
150 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
152 common-before-compile = $(before-compile)
156 # If a makefile needs to do something conditional on something that
157 # can only be figured out from headers, write a FOO.make.c input
158 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
159 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
161 # We only generate these in the top-level makefile, to avoid any weirdness
162 # from subdir-specific makefile tweaks creeping in on an update.
163 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
165 (echo '# Generated from $*.make.c by Makerules.'; \
166 $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
167 -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
168 | sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \
169 echo 'common-generated += $(@F)'; \
170 sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
176 sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g' \
177 -e 's@^\.\.\/\([^ \]*\)@$$(..)\1@g'
179 sed-remove-dotdot := -e 's@ *\([^ \/$$][^ \]*\)@ $$(..)\1@g' \
180 -e 's@^\([^ \/$$][^ \]*\)@$$(..)\1@g'
184 ifdef gen-as-const-headers
185 # Generating headers for assembly constants.
186 # We need this defined early to get into before-compile before
187 # it's used in sysd-rules, below.
188 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
189 %.sym $(common-before-compile)
190 $(AWK) -f $< $(filter %.sym,$^) \
191 | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
192 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
193 sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
194 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
196 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
197 $(@:.h=.h.d)T > $(@:.h=.h.d)T2
199 mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
200 mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
201 vpath %.sym $(sysdirs)
202 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
204 tests += $(gen-as-const-headers:%.sym=test-as-const-%)
205 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
206 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
207 %.sym $(common-objpfx)%.h
208 ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
209 $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
210 echo '#include "$(..)test-skeleton.c"') > $@T
214 ifeq (yes,$(build-shared))
215 # Generate the header containing the names of all shared libraries.
216 # We use a stamp file to avoid unnecessary recompilations.
217 before-compile += $(common-objpfx)gnu/lib-names.h
218 ifeq ($(soversions.mk-done),t)
220 lib-names-h-abi = gnu/lib-names.h
221 lib-names-stmp-abi = gnu/lib-names.stmp
223 lib-names-h-abi = gnu/lib-names-$(default-abi).h
224 lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
225 before-compile += $(common-objpfx)$(lib-names-h-abi)
226 common-generated += gnu/lib-names.h
227 install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
228 $(common-objpfx)gnu/lib-names.h:
229 $(make-target-directory)
231 echo '/* This file is automatically generated.';\
232 echo ' It defines macros to allow user program to find the shared'; \
233 echo ' library files which come as part of GNU libc. */'; \
234 echo '#ifndef __GNU_LIB_NAMES_H'; \
235 echo '#define __GNU_LIB_NAMES_H 1'; \
237 $(if $(abi-includes), \
238 $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
240 $(foreach v,$(abi-variants),\
241 $(if $(abi-$(v)-condition),\
242 echo '#if $(abi-$(v)-condition)'; \
243 echo '# include <gnu/lib-names-$(v).h>'); \
244 $(if $(abi-$(v)-condition),echo '#endif';)) \
246 echo '#endif /* gnu/lib-names.h */'; \
249 $(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
250 $(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
251 $(common-objpfx)soversions.i
252 $(make-target-directory)
254 $(if $(abi-variants), \
255 echo '/* This file is automatically generated. */';\
256 echo '#ifndef __GNU_LIB_NAMES_H'; \
257 echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
259 echo '/* This file is automatically generated.';\
260 echo ' It defines macros to allow user program to find the shared'; \
261 echo ' library files which come as part of GNU libc. */'; \
262 echo '#ifndef __GNU_LIB_NAMES_H'; \
263 echo '#define __GNU_LIB_NAMES_H 1';) \
265 ($(foreach s,$(all-sonames), echo $(s);)) \
266 | LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
267 $(if $(abi-variants),, \
269 echo '#endif /* gnu/lib-names.h */';) \
271 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
274 common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
277 ###############################################################################
278 # NOTE! Everything adding to before-compile needs to come before this point! #
279 ###############################################################################
281 # Generate an ordered list of implicit rules which find the source files in
282 # each sysdep directory. The old method was to use vpath to search all the
283 # sysdep directories. However, that had the problem that a .S file in a
284 # later directory would be chosen over a .c file in an earlier directory,
285 # which does not preserve the desired sysdeps ordering behavior.
287 # System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
288 # matching sysdep directories whose assembly source files should be
291 -include $(common-objpfx)sysd-rules
292 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
293 # The value of $(+sysdep_dirs) the sysd-rules was computed for
294 # differs from the one we are using now. So force a rebuild of sysd-rules.
295 sysd-rules-force = FORCE
298 $(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
299 $(common-objpfx)config.make $(..)Makerules \
300 $(sysdep-makefiles) $(sysdep-makeconfigs) \
303 LC_ALL=C $(AWK) -f $< > $@T \
304 -v all_object_suffixes='$(all-object-suffixes)' \
305 -v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
306 -v sysd_rules_patterns='$(sysd-rules-patterns)' \
307 -v config_sysdirs='$(config-sysdirs)'
310 ifndef sysd-rules-done
311 # Don't do deps until this exists, because it provides rules to make the deps.
315 define o-iterator-doit
316 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
318 object-suffixes-left := $(all-object-suffixes)
319 include $(o-iterator)
321 define o-iterator-doit
322 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
324 object-suffixes-left := $(all-object-suffixes)
325 include $(o-iterator)
327 define o-iterator-doit
328 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
330 object-suffixes-left := $(all-object-suffixes)
331 include $(o-iterator)
333 # Omit the objpfx rules when building in the source tree, because
334 # objpfx is empty and so these rules just override the ones above.
336 # Define first rules to find the source files in $(objpfx).
337 # Generated source files will end up there.
338 define o-iterator-doit
339 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
341 object-suffixes-left := $(all-object-suffixes)
342 include $(o-iterator)
344 define o-iterator-doit
345 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
347 object-suffixes-left := $(all-object-suffixes)
348 include $(o-iterator)
351 # Generate version maps, but wait until sysdep-subdirs is known
352 ifeq ($(sysd-sorted-done),t)
353 ifeq ($(build-shared),yes)
354 -include $(common-objpfx)sysd-versions
355 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
356 common-generated += $(version-maps)
357 postclean-generated += sysd-versions Versions.all abi-versions.h \
358 Versions.def Versions.v.i Versions.v
360 ifndef avoid-generated
361 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
362 sysd-versions-force = FORCE
366 $(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \
367 $(common-objpfx)Versions.v
368 LC_ALL=C $(AWK) -f $^ > $@T
371 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
372 $(common-objpfx)soversions.i \
373 $(common-objpfx)Versions.def
374 { while read which lib version setname; do \
375 test x"$$which" = xDEFAULT || continue; \
376 test -z "$$setname" || echo "$$lib : $$setname"; \
377 done < $(word 2,$^); \
379 } | LC_ALL=C $(AWK) -f $< > $@T
381 # See %.v/%.v.i implicit rules in Makeconfig.
382 $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
383 $(wildcard $(sysdirs:%=%/Versions)) \
384 $(sysd-versions-force)
385 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
386 $(common-objpfx)Versions.v \
387 $(..)scripts/versions.awk
388 ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
390 | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
391 -v move_if_change='$(move-if-change)' \
395 endif # avoid-generated
396 endif # $(build-shared) = yes
397 endif # sysd-sorted-done
399 # Generate .dT files as we compile.
400 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
401 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
402 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
403 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
405 # Like compile-mkdep-flags, but for use with $(BUILD_CC). We don't want to
406 # track system includes here, they may spuriously trigger an install rule,
407 # and would cause the check-local-headers test to fail.
408 native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
410 # GCC can grok options after the file name, and it looks nicer that way.
411 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
412 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
413 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
414 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
415 COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
416 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
417 $(ASFLAGS) $(ASFLAGS-$(suffix $@))
419 # We need this for the output to go in the right place. It will default to
420 # empty if make was configured to work with a cc that can't grok -c and -o
421 # together. You can't compile the C library with such a compiler.
422 OUTPUT_OPTION = -o $@
424 # This is the end of the pipeline for compiling generated C code.
425 compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
427 # We need the $(CFLAGS) to be in there to have the right predefines during
428 # the dependency run for C sources. But having it for assembly sources can
429 # get the wrong predefines.
430 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
433 $(make-target-directory)
434 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
435 $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
436 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
437 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
438 mv -f $(@:.d=.T) $@ $(generate-md5)
442 # Continuation lines here are dangerous because they introduce spaces!
443 define sed-remove-objpfx
444 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
445 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
449 # Modify the list of routines we build for different targets
451 ifeq (yes,$(build-shared))
452 ifndef libc.so-version
453 # Undefine this because it can't work when we libc.so is unversioned.
454 static-only-routines =
458 elide-routines.oS += $(filter-out $(static-only-routines),\
459 $(routines) $(aux) $(sysdep_routines))
460 elide-routines.os += $(static-only-routines)
462 # If we have versioned code we don't need the old versions in any of the
464 elide-routines.o += $(shared-only-routines)
465 elide-routines.op += $(shared-only-routines)
466 elide-routines.og += $(shared-only-routines)
468 # Shared library building.
470 ifeq (yes,$(build-shared))
472 # Reference map file only when shared libraries are built and a map file name
474 ifeq ($(build-shared),yes)
475 map-file = $(firstword $($(@F:.so=-map)) \
476 $(addprefix $(common-objpfx), \
477 $(filter $(@F:.so=.map),$(version-maps))))
478 load-map-file = $(map-file:%=-Wl,--version-script=%)
481 # Compiler arguments to use to link a shared object with libc and
482 # ld.so. This is intended to be as similar as possible to a default
483 # link with an installed libc.
484 link-libc-args = -Wl,--start-group \
486 $(common-objpfx)libc_nonshared.a \
487 $(as-needed) $(elf-objpfx)ld.so $(no-as-needed) \
490 # The corresponding shared libc to use. This may be modified for a
492 libc-for-link = $(common-objpfx)libc.so
494 # The corresponding dependencies. As these are used in dependencies,
495 # not just commands, they cannot use target-specific variables so need
496 # to name both possible libc.so objects.
497 link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
498 $(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so
500 # Pattern rule to build a shared object from an archive of PIC objects.
501 # This must come after the installation rules so Make doesn't try to
502 # build shared libraries in place from the installed *_pic.a files.
503 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
504 # on other shared objects. The linking with libc and ld.so is intended
505 # to be as similar as possible to a default link with an installed libc.
506 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
507 $(build-shlib) $(link-libc-args)
509 define build-shlib-helper
510 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
511 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
512 $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
513 $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
514 -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
515 $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
516 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
519 ifeq (yes,$(use-default-link))
520 # If the linker is good enough, we can let it use its default linker script.
524 # binutils only position loadable notes into the first page for binaries,
525 # not for shared objects
526 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
527 $(LINK.o) -shared -Wl,-O1 \
528 -nostdlib -nostartfiles \
529 $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
530 -Wl,--verbose 2>&1 | \
532 -e '/^=========/,/^=========/!d;/^=========/d' \
533 $(if $(filter yes,$(have-hash-style)), \
534 -e 's/^.*\.gnu\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
535 -e '/^[ ]*\.hash[ ]*:.*$$/{h;d;}' \
536 -e '/DATA_SEGMENT_ALIGN/{H;g}' \
538 -e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
540 -e 's/^.*\*(\.dynbss).*$$/& \
541 PROVIDE(__start___libc_freeres_ptrs = .); \
542 *(__libc_freeres_ptrs) \
543 PROVIDE(__stop___libc_freeres_ptrs = .);/'\
544 -e 's@^.*\*(\.jcr).*$$@& \
545 PROVIDE(__start___libc_subfreeres = .);\
546 __libc_subfreeres : { *(__libc_subfreeres) }\
547 PROVIDE(__stop___libc_subfreeres = .);\
548 PROVIDE(__start___libc_atexit = .);\
549 __libc_atexit : { *(__libc_atexit) }\
550 PROVIDE(__stop___libc_atexit = .);\
551 PROVIDE(__start___libc_thread_subfreeres = .);\
552 __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
553 PROVIDE(__stop___libc_thread_subfreeres = .);\
554 /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
557 common-generated += shlib.lds
559 shlib-lds = $(common-objpfx)shlib.lds
560 shlib-lds-flags = -T $(shlib-lds)
564 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
565 $(csu-objpfx)abi-note.o $(build-shlib-objlist)
568 define build-module-helper
569 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
570 $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
571 -B$(csu-objpfx) $(load-map-file) \
572 $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
573 -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
576 # This macro is similar to build-shlib but it does not define a soname
577 # and it does not depend on the destination name to start with `lib'.
578 # binutils only position loadable notes into the first page for binaries,
579 # not for shared objects
581 $(build-module-helper) -o $@ $(shlib-lds-flags) \
582 $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
584 define build-module-asneeded
585 $(build-module-helper) -o $@ $(shlib-lds-flags) \
586 $(csu-objpfx)abi-note.o \
587 -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
591 build-module-helper-objlist = \
592 $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
593 $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
594 $(link-libc-deps),$^))
596 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
597 build-shlib-objlist = $(build-module-helper-objlist) \
598 $(LDLIBS-$(@F:lib%.so=%).so)
600 # Don't try to use -lc when making libc.so itself.
601 # Also omits crti.o and crtn.o, which we do not want
602 # since we define our own `.init' section specially.
603 LDFLAGS-c.so = -nostdlib -nostartfiles
604 # But we still want to link libc.so against $(libc.so-gnulib).
605 LDLIBS-c.so += $(libc.so-gnulib)
606 # Give libc.so an entry point and make it directly runnable itself.
607 LDFLAGS-c.so += -e __libc_main
608 # If lazy relocation is disabled add the -z now flag.
609 ifeq ($(bind-now),yes)
610 LDFLAGS-c.so += -Wl,-z,now
612 # Pre-link the objects of libc_pic.a so that we can locally resolve
613 # COMMON symbols before we link against ld.so. This is because ld.so
614 # contains some of libc_pic.a already, which will prevent the COMMONs
615 # from being allocated in libc.so, which introduces evil dependencies
616 # between libc.so and ld.so, which can make it impossible to upgrade.
617 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
618 $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
619 $(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
621 ifeq (,$(strip $(shlib-lds-flags)))
622 # Generate a list of -R options to excise .gnu.glibc-stub.* sections.
623 $(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
625 $(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
628 # Apply those -R options.
629 $(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
630 $(common-objpfx)libc_pic.os
632 generated += libc_pic.opts libc_pic.os.clean
634 libc_pic_clean := .clean
637 # Build a possibly-modified version of libc_pic.a for use in building
639 ifeq (,$(filter sunrpc,$(subdirs)))
640 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
641 $(make-target-directory)
644 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
645 $(common-objpfx)sunrpc/librpc_compat_pic.a
646 $(make-target-directory)
647 (cd $(common-objpfx)linkobj; \
648 $(AR) x ../libc_pic.a; \
649 rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
650 $(AR) x ../sunrpc/librpc_compat_pic.a; \
651 $(AR) cr libc_pic.a *.os; \
653 endif # $(subdirs) contains sunrpc
655 # Clear link-libc-deps for the libc.so libraries so build-shlibs does not
656 # filter ld.so out of the list of linked objects.
657 $(common-objpfx)libc.so: link-libc-deps = # empty
658 $(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
660 # Use our own special initializer and finalizer files for the libc.so
662 $(common-objpfx)libc.so: $(elf-objpfx)soinit.os \
663 $(common-objpfx)libc_pic.os$(libc_pic_clean) \
664 $(elf-objpfx)sofini.os \
665 $(elf-objpfx)interp.os \
670 $(common-objpfx)linkobj/libc.so: $(elf-objpfx)soinit.os \
671 $(common-objpfx)linkobj/libc_pic.a \
672 $(elf-objpfx)sofini.os \
673 $(elf-objpfx)interp.os \
678 ifeq ($(build-shared),yes)
679 $(common-objpfx)libc.so: $(common-objpfx)libc.map
681 common-generated += libc.so libc_pic.os
682 ifdef libc.so-version
683 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
685 common-generated += libc.so$(libc.so-version)
689 # Figure out the source filenames in this directory.
691 override sources := $(addsuffix .c,\
692 $(filter-out $(elided-routines),\
695 sysdep_routines := $(sysdep_routines)
697 headers := $(headers) $(sysdep_headers)
699 # This is the list of all object files, gotten by
700 # replacing every ".c" in `sources' with a ".o".
701 override objects := $(addprefix $(objpfx),$(sources:.c=.o))
704 # The makefile may define $(extra-libs) with `libfoo libbar'
705 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
707 # extra-lib.mk is included once for each extra lib to define rules
708 # to build it, and to add its objects to the various variables.
709 # During its evaluation, $(lib) is set to the name of the library.
710 extra-libs-left := $(extra-libs)
711 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
715 # The makefile may define $(modules-names) to build additional modules.
716 # These are built with $(build-module), except any in $(modules-names-nobuild).
718 # extra-lib.mk is included once for each extra lib to define rules
719 # to build it, and to add its objects to the various variables.
720 # During its evaluation, $(lib) is set to the name of the library.
721 extra-modules-left := $(modules-names)
722 include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
724 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
725 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
726 $(objpfx)%.os $(shlib-lds) $(link-libs-deps)
730 +depfiles := $(sources:.c=.d) \
731 $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
732 $(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
733 $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
734 $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
735 ifeq ($(build-programs),yes)
736 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
738 +depfiles := $(addprefix $(objpfx),\
739 $(filter-out $(addsuffix .d,$(omit-deps)),\
741 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
742 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
743 $(wildcard $(all-dt-files:.dt=.d))
745 # This is a funny rule in that it removes its input file.
747 @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
748 mv -f $(@:.d=.T) $@ && \
751 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
752 # They will be generated when they're needed, and trying too early won't work.
753 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
754 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
759 -include $(+depfiles)
763 # Maximize efficiency by minimizing the number of rules.
764 .SUFFIXES: # Clear the suffix list. We don't use suffix rules.
765 # Don't define any builtin rules.
766 MAKEFLAGS := $(MAKEFLAGS)r
768 # Generic rule for making directories.
770 # mkdir isn't smart enough to strip a trailing /.
771 # We always require a mkdir which supports the -p option to avoid error
772 # messages in case of races.
775 # Make sure that object files are not removed
776 # when they are intermediates between sources and library members.
777 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
779 # Make sure that the parent library archive is never removed.
780 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
782 # Use the verbose option of ar and tar when not running silently.
783 ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
789 ARFLAGS := r$(verbose)
790 CREATE_ARFLAGS := cru$(verbose)
792 # This makes all the object files in the parent library archive.
794 .PHONY: lib lib-noranlib
795 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
796 lib-noranlib: libobjs
798 # For object-suffix $o, the list of objects with that suffix.
799 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
800 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
801 $(elide-routines$o)),\
803 $(addprefix $(objpfx),$(o-objects$o))
805 others: $(addprefix $(objpfx),$(install-lib))
809 # Create the stamp$o files to keep the parent makefile happy.
810 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
811 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
812 $(make-target-directory)
816 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
817 # timestamp file; these rules (one explicit rule is generated for each
818 # object suffix) write a list of objects to update in the stamp file.
819 # The parent will then actually add them all to the archive in the
820 # archive rule, below.
821 define o-iterator-doit
822 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
825 $(make-target-directory)
826 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
829 object-suffixes-left := $(object-suffixes-for-libc)
830 include $(o-iterator)
834 # Now define explicit rules to build the library archives; these depend
835 # on the stamp files built above.
836 define o-iterator-doit
837 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
838 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
841 cd $(common-objdir) && \
842 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
844 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
845 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
847 $(subdirs-stamps): subdir_lib;
849 object-suffixes-left = $(object-suffixes-for-libc)
850 include $(o-iterator)
853 # This makes all the object files.
854 .PHONY: objects objs libobjs extra-objs
855 objects objs: libobjs extra-objs
856 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
857 extra-objs: $(addprefix $(objpfx),$(extra-objs))
859 # Canned sequence for building an extra library archive.
860 define build-extra-lib
861 $(patsubst %/,cd % &&,$(objpfx)) \
862 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
863 $(patsubst $(objpfx)%,%,$^)
868 .PHONY: force-install
871 # $(install-lib) are installed from the object directory into $(libdir);
872 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
873 # unless they also appear in $(non-lib.a). $(install-data) are installed as
874 # they are into $(datadir). $(headers) are installed as they are in
875 # $(includedir). $(install-bin), $(install-bin-script) and $(install-sbin)
876 # are installed from the object directory into $(bindir), $(bindir) and
877 # $(sbindir), respectively. $(install-others) and $(install-others-programs)
878 # are absolute path names of files to install; rules to install them are
881 # The simple library name to install libc.a under.
882 # This could be defined by a sysdep Makefile.
888 $(make-target-directory)
889 $(INSTALL_DATA) $< $@
892 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
893 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
894 define make-target-directory
895 $(addprefix $(..)./scripts/mkinstalldirs ,\
896 $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
899 # Any directory (parent or subdir) should install libc.a; this way
900 # "make install" in a subdir is guaranteed to install everything it changes.
901 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
902 $(inst_libdir)/$(patsubst %,$(libtype$o),\
903 $(libprefix)$(libc-name)))
904 install: $(installed-libcs)
905 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
906 $(make-target-directory)
907 $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
909 define do-install-program
910 $(make-target-directory)
911 $(INSTALL_PROGRAM) $< $@.new
915 define do-install-script
916 $(make-target-directory)
917 $(INSTALL_SCRIPT) $< $@.new
921 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
922 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
924 ifeq (yes,$(build-shared))
925 # Find which .so's have versions.
926 versioned := $(strip $(foreach so,$(install-lib.so),\
927 $(patsubst %,$(so),$($(so)-version))))
929 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
930 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
932 # For versioned libraries, we install three files:
933 # $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
934 # $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
935 # $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
936 lib-version := $(firstword $($(subdir)-version) $(version))
937 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
938 $(foreach L,$(install-lib.so-versioned),\
940 $(inst_slibdir)/$(L:.so=)-$(lib-version).so \
941 $(inst_slibdir)/$L$($L-version))
943 # Install all the unversioned shared libraries.
944 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
945 $(objpfx)%.so $(+force)
946 $(do-install-program)
948 ifneq ($(findstring -s,$(LN_S)),)
951 $(SHELL) $(..)scripts/rellns-sh $< $@.new
955 # If we have no symbolic links don't bother with rellns-sh.
963 ifeq (yes,$(build-shared))
964 ifeq (no,$(cross-compiling))
965 symbolic-link-prog := $(elf-objpfx)sln
966 symbolic-link-list := $(elf-objpfx)symlink.list
967 define make-shlib-link
968 echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
970 else # cross-compiling
971 # We need a definition that can be used by elf/Makefile's install rules.
972 symbolic-link-prog = $(LN_S)
975 ifndef make-shlib-link
976 define make-shlib-link
978 $(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
982 ifdef libc.so-version
983 # For a library specified to be version N, install three files:
984 # libc.so -> libc.so.N (e.g. libc.so.6)
985 # libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
987 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
990 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
991 $(do-install-program)
992 install: $(inst_slibdir)/libc.so$(libc.so-version)
994 # This fragment of linker script gives the OUTPUT_FORMAT statement
995 # for the configuration we are building. We put this statement into
996 # the linker scripts we install for -lc et al so that they will not be
997 # used by a link for a different format on a multi-architecture system.
998 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
999 $(common-objpfx)config.make \
1000 $(common-objpfx)config.h $(..)Makerules
1001 ifneq (unknown,$(output-format))
1002 echo > $@.new 'OUTPUT_FORMAT($(output-format))'
1004 $(LINK.o) -shared $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
1005 -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
1006 | sed -n -f $< > $@.new
1011 common-generated += format.lds
1014 # What we install as libc.so for programs to link against is in fact a
1015 # link script. It contains references for the various libraries we need.
1016 # The libc.so object is not complete since some functions are only defined
1017 # in libc_nonshared.a.
1018 # We need to use absolute paths since otherwise local copies (if they exist)
1019 # of the files are taken by the linker.
1020 install: $(inst_libdir)/libc.so
1021 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
1022 $(common-objpfx)libc.so$(libc.so-version) \
1023 $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1024 $(libprefix)$(libc-name)) \
1026 (echo '/* GNU ld script';\
1027 echo ' Use the shared library, but some functions are only in';\
1028 echo ' the static library, so try that secondarily. */';\
1030 echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1031 '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1032 ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
1039 install: $(inst_slibdir)/libc.so
1040 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1041 $(do-install-program)
1044 ifneq (,$(versioned))
1045 # Produce three sets of rules as above for all the smaller versioned libraries.
1047 define o-iterator-doit
1048 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1050 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1051 ifneq (,$(object-suffixes-left))
1052 include $(o-iterator)
1055 # Make symlinks in the build directory, because the versioned names might
1056 # be referenced by a DT_NEEDED in another library.
1057 define o-iterator-doit
1058 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1060 object-suffixes-left := $(versioned)
1061 include $(o-iterator)
1063 generated += $(foreach o,$(versioned),$o$($o-version))
1065 ifeq (,$($(subdir)-version))
1066 define o-iterator-doit
1067 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1071 object-suffixes-left := $(versioned)
1072 include $(o-iterator)
1074 define o-iterator-doit
1075 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1076 $$(do-install-program)
1078 object-suffixes-left := $(versioned)
1079 include $(o-iterator)
1081 define o-iterator-doit
1082 $(inst_slibdir)/$o$($o-version): \
1083 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1086 object-suffixes-left := $(versioned)
1087 include $(o-iterator)
1089 define o-iterator-doit
1090 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1091 $$(do-install-program)
1093 object-suffixes-left := $(versioned)
1094 include $(o-iterator)
1098 define do-install-so
1099 $(do-install-program)
1100 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1101 $(filter-out %.so,$@))
1104 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1105 $(foreach v,$(so-versions),\
1106 $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1109 $(foreach v,$(so-versions),\
1110 $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1115 $(addprefix $(inst_bindir)/,$(install-bin)): \
1116 $(inst_bindir)/%: $(objpfx)% $(+force)
1117 $(do-install-program)
1119 ifdef install-bin-script
1120 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1121 $(inst_bindir)/%: $(objpfx)% $(+force)
1122 $(do-install-script)
1124 ifdef install-rootsbin
1125 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1126 $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1127 $(do-install-program)
1130 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1131 $(inst_sbindir)/%: $(objpfx)% $(+force)
1132 $(do-install-program)
1135 install-lib.a := $(filter lib%.a,$(install-lib))
1136 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1137 ifdef install-lib-non.a
1138 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1139 $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1143 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1144 $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1149 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1152 headers := $(strip $(headers))
1154 # This implicit rule installs headers from the source directory.
1155 # It may be ignored in preference to rules from sysd-rules to find
1156 # headers in the sysdeps tree.
1157 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1159 $(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
1161 $(inst_includedir)/%.h: %.h $(+force)
1163 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1165 headers-nonh := $(filter-out %.h,$(headers))
1167 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1170 endif # headers-nonh
1173 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1174 install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1175 install-data-nosubdir install-headers-nosubdir
1176 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1177 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1178 install-rootsbin-nosubdir: \
1179 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1180 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1181 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1182 $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1183 $(addprefix $(libprefix),$(install-lib-non.a)))
1184 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1185 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1186 install-others-nosubdir: $(install-others)
1187 install-others-programs-nosubdir: $(install-others-programs)
1189 # We need all the `-nosubdir' targets so that `install' in the parent
1190 # doesn't depend on several things which each iterate over the subdirs.
1191 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1192 # subroutine. Then in the parent `install-FOO' also causes subdir makes.
1193 install-%:: install-%-nosubdir ;
1195 .PHONY: install install-no-libc.a-nosubdir
1196 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1197 install-lib-nosubdir install-others-nosubdir
1198 ifeq ($(build-programs),yes)
1199 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1200 install-rootsbin-nosubdir install-sbin-nosubdir \
1201 install-others-programs-nosubdir
1203 install: install-no-libc.a-nosubdir
1205 # Command to compile $< using the native libraries.
1206 define native-compile
1207 $(make-target-directory)
1208 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1209 $< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
1212 # We always want to use configuration definitions.
1213 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
1214 -DIS_IN_build -include $(common-objpfx)config.h
1216 # Support the GNU standard name for this target.
1219 # Special target to run tests which cannot be run unconditionally.
1220 # Maintainers should use this target.
1224 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1225 ifneq (,$(all-nonlib))
1226 cpp-srcs-left = $(all-nonlib)
1228 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
1232 ifeq ($(build-shared),yes)
1233 # Generate normalized lists of symbols, versions, and data sizes.
1234 # This is handy for checking against existing library binaries.
1236 %.symlist: $(..)scripts/abilist.awk %.dynsym
1237 LC_ALL=C $(AWK) -f $^ > $@T
1241 LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
1244 # A sysdeps/.../Makefile can set abilist-pattern to something like
1245 # %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
1246 # This makes sense if multiple ABIs can be most cleanly supported by a
1247 # configuration without using separate sysdeps directories for each.
1248 ifdef abilist-pattern
1249 vpath $(abilist-pattern) $(+sysdep_dirs)
1252 vpath %.abilist $(+sysdep_dirs)
1254 # The .PRECIOUS rule prevents the files built by an implicit rule whose
1255 # target pattern is %.symlist from being considered "intermediate files"
1256 # and automatically removed. We only want these files to be removed by
1257 # 'make clean', which is handled by the 'generated' variable.
1258 .PRECIOUS: %.symlist
1259 generated += $(extra-libs:=.symlist)
1261 ifdef abilist-pattern
1262 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1264 $(check-abi-pattern); \
1266 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1267 $(common-objpfx)%.symlist
1268 $(check-abi-pattern); \
1271 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1275 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1276 $(common-objpfx)%.symlist
1279 define check-abi-pattern
1280 diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^) \
1284 diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
1287 ifdef abilist-pattern
1288 update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
1289 $(update-abi-pattern)
1290 update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
1291 $(update-abi-pattern)
1293 update-abi-%: $(objpfx)%.symlist %.abilist
1295 update-abi-%: $(common-objpfx)%.symlist %.abilist
1297 define update-abi-pattern
1298 @if cmp -s $^ 2> /dev/null; \
1300 echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
1302 echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
1306 @if cmp -s $^ 2> /dev/null; \
1308 echo '+++ $(filter %.abilist,$^) is unchanged'; \
1310 echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
1314 .PHONY: update-abi check-abi
1315 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1316 check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
1317 $(install-lib.so-versioned))
1318 check-abi: $(check-abi-list)
1320 subdir_check-abi: check-abi
1321 subdir_update-abi: update-abi
1323 check-abi: subdir_check-abi
1324 if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
1325 cat $(objpfx)*/check-abi*.out && exit 1; fi
1326 update-abi: subdir_update-abi
1329 ifeq ($(subdir),elf)
1330 check-abi: $(objpfx)check-abi-libc.out
1331 tests-special += $(objpfx)check-abi-libc.out
1332 update-abi: update-abi-libc
1333 common-generated += libc.symlist
1336 ifeq ($(build-shared),yes)
1338 tests-special += $(check-abi-list)
1344 # These will have been set by sysdeps/posix/Makefile.
1350 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1352 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1353 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1354 $(common-objpfx)config.make
1355 $(make-target-directory)
1356 { echo '#include "$(..)posix/bits/posix1_lim.h"'; \
1357 echo '#define _LIBC 1'; \
1358 echo '#include "$(..)misc/sys/uio.h"'; } | \
1359 $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' \
1360 $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
1361 sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
1362 $(@:st=dT) > $(@:st=dt)
1363 mv -f $(@:st=dt) $(@:st=d)
1364 fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; \
1365 filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`; \
1366 iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`; \
1367 fopen_max=$${fopen_max:-16}; \
1368 filename_max=$${filename_max:-1024}; \
1369 if [ -z "$$iov_max" ]; then \
1370 define_iov_max="# undef IOV_MAX"; \
1372 define_iov_max="# define IOV_MAX $$iov_max"; \
1374 sed -e "s/@FOPEN_MAX@/$$fopen_max/" \
1375 -e "s/@FILENAME_MAX@/$$filename_max/" \
1376 -e "s/@L_tmpnam@/$(L_tmpnam)/" \
1377 -e "s/@TMP_MAX@/$(TMP_MAX)/" \
1378 -e "s/@L_ctermid@/$(L_ctermid)/" \
1379 -e "s/@L_cuserid@/$(L_cuserid)/" \
1380 -e "s/@define_IOV_MAX@/$$define_iov_max/" \
1382 $(move-if-change) $(@:st=h.new) $(@:st=h)
1383 # Remove these last so that they can be examined if something went wrong.
1384 rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1388 -include $(stdio_lim:h=d)
1390 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1394 .PHONY: echo-headers
1398 %.bz2: %; bzip2 -9vk $<
1399 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1400 %.xz: %; xz -9evk $<
1402 # Common cleaning targets.
1404 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1406 mostlyclean: common-mostlyclean
1409 -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1411 $(addsuffix .test-result,$(tests) \
1415 # Remove the object files.
1417 -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1418 $(others) $(sysdep-others) stubs \
1419 $(addsuffix .o,$(tests) $(xtests) \
1420 $(test-srcs) $(others) \
1422 $(addsuffix .out,$(tests) $(xtests) \
1424 $(addsuffix .test-result,$(tests) \
1427 -rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1428 $(install-lib) $(install-lib.so) \
1429 $(install-lib.so:%.so=%_pic.a))
1431 -rm -f $(objpfx)rtld-*.os
1434 $(foreach o,$(object-suffixes-for-libc),
1435 -rm -f $(objpfx)stamp$o $(o-objects))
1438 # Also remove the dependencies and generated source files.
1439 common-clean: common-mostlyclean
1440 -rm -f $(addprefix $(objpfx),$(generated))
1441 -rm -f $(objpfx)*.d $(objpfx)*.dt
1442 -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1443 -rm -f $(addprefix $(common-objpfx),$(common-generated))
1444 -rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1446 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1447 # for each function which is a stub.
1450 .PHONY: stubs # The parent Makefile calls this target.
1451 stubs: $(objpfx)stubs
1453 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1454 $(addprefix $(objpfx),$(extra-objs))
1455 $(objpfx)stubs: $(objs-for-stubs)
1456 ifneq (,$(strip $(objs-for-stubs)))
1457 (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1458 $(AWK) '/\.gnu\.glibc-stub\./ { \
1459 sub(/\.gnu\.glibc-stub\./, "", $$2); \
1461 END { for (s in stubs) print "#define __stub_" s }' > $@T
1467 ifneq (,$(strip $(gpl2lgpl)))
1468 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1469 # Snarf from the master source and frob the copying notice.
1470 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1472 # So I don't edit them by mistake.