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# Copyright (C) 1991-2012 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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# Common rules for making the GNU C library. This file is included
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# by the top-level Makefile and by all subdirectory makefiles
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This makefile requires GNU Make.
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REQUIRED_MAKE_VERSION = 3.74
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REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))
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ifneq ($(REQUIRED_MAKE_VERSION), \
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$(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
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Wrong GNU Make version. See above for the version needed.
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# If `sources' was defined by the parent makefile, undefine it so
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# we will later get it from wildcard search in this directory.
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ifneq "$(findstring env,$(origin sources))" ""
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PATH := this definition should take precedence over $(oPATH)
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ifeq ($(PATH),$(oPATH))
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You must not use the -e flag when building the GNU C library.
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ifndef +included-Makeconfig
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include $(..)Makeconfig
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# This variable is used in ``include $(o-iterator)'' after defining
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# $(o-iterator-doit) to produce some desired rule using $o for the object
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# suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
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# is produced for each object suffix in use.
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o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
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# Include any system-specific makefiles.
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# This is here so things in sysdep Makefiles can easily depend on foo.h as
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# appropriate and not worry about where foo.h comes from, which may be
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# system dependent and not known by that Makefile.
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vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
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$(+sysdep_dirs) $(..)))
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# The same is true for RPC source files.
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vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
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$(+sysdep_dirs) $(..)))
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# Some sysdep makefiles use this to distinguish being included here from
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# being included individually by a subdir makefile (hurd/Makefile needs this).
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sysdep-makefiles := $(wildcard $(sysdirs:=/Makefile))
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ifneq (,$(sysdep-makefiles))
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include $(sysdep-makefiles)
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# Reorder before-compile so that mach things come first, and hurd things
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# second, before all else. The mach and hurd subdirectories have many
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# generated header files which the much of rest of the library depends on,
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# so it is best to build them first (and mach before hurd, at that).
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before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
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$(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
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# Even before that, we need abi-versions.h which is generated right here.
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ifeq ($(versioning),yes)
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ifndef avoid-generated
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before-compile := $(common-objpfx)abi-versions.h $(before-compile)
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$(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
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$(common-objpfx)Versions.all
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LC_ALL=C $(AWK) -v oldest_abi=$(oldest-abi) -f $^ > $@T
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$(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
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sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
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$(common-objpfx)abi-versions.h > $@T
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abi_versions_file := $(common-objpfx)abi-versions.h
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endif # avoid-generated
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endif # $(versioning) = yes
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ifndef avoid-generated
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before-compile := $(common-objpfx)libc-abis.h $(before-compile)
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$(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @:
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$(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
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$(firstword $(wildcard $(sysdirs:=/libc-abis)) \
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$(base-machine)-$(config-vendor)-$(config-os) \
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< $(word 2,$^) > $(@:.stamp=.h)T
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$(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
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common-generated += $(common-objpfx)libc-abis.h
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endif # avoid-generated
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# Make sure the subdirectory for object files gets created.
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ifeq (,$(wildcard $(objpfx).))
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before-compile += $(objpfx).
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$(make-target-directory)
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# Remove existing files from `before-compile'. Things are added there when
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# they must exist for dependency generation to work right, but once they
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# exist there is no further need for every single file to depend on them,
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# and those gratuitous dependencies result in many gratuitous
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before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
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# Don't let any before-compile file be an intermediate and get removed.
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# We don't want $(common-objpfx) files to depend on miscellaneous stuff
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common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
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common-before-compile = $(before-compile)
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# If a makefile needs to do something conditional on something that
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# can only be figured out from headers, write a FOO.make.c input
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# file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
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# to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
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# We only generate these in the top-level makefile, to avoid any weirdness
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# from subdir-specific makefile tweaks creeping in on an update.
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$(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
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(echo '# Generated from $*.make.c by Makerules.'; \
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$(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
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-MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
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| sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \
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echo 'common-generated += $(@F)'; \
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sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
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sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g' \
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-e 's@^\.\.\/\([^ \]*\)@$$(..)\1@g'
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sed-remove-dotdot := -e 's@ *\([^ \/$$][^ \]*\)@ $$(..)\1@g' \
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-e 's@^\([^ \/$$][^ \]*\)@$$(..)\1@g'
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ifdef gen-as-const-headers
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# Generating headers for assembly constants.
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# We need this defined early to get into before-compile before
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# it's used in sysd-rules, below.
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$(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
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%.sym $(common-before-compile)
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$(AWK) -f $< $(filter %.sym,$^) \
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| $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
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-MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
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sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
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$(@:.h.d=.h)T3 > $(@:.h.d=.h)T
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sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
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$(@:.h=.h.d)T > $(@:.h=.h.d)T2
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mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
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mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
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vpath %.sym $(sysdirs)
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before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
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tests += $(gen-as-const-headers:%.sym=test-as-const-%)
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generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
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$(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
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%.sym $(common-objpfx)%.h
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($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
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$(AWK) -v test=1 -f $< $(filter %.sym,$^); \
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echo '#include "$(..)test-skeleton.c"') > $@T
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# Generate an ordered list of implicit rules which find the source files in
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# each sysdep directory. The old method was to use vpath to search all the
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# sysdep directories. However, that had the problem that a .S file in a
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# later directory would be chosen over a .c file in an earlier directory,
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# which does not preserve the desired sysdeps ordering behavior.
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# System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
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# patterns matching sysdep directories whose assembly source files should
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ifdef inhibit-sysdep-asm
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define check-inhibit-asm
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case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) asm= ;; esac;
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-include $(common-objpfx)sysd-rules
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ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
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# The value of $(+sysdep_dirs) the sysd-rules was computed for
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# differs from the one we are using now. So force a rebuild of sysd-rules.
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sysd-rules-force = FORCE
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$(common-objpfx)sysd-rules: $(common-objpfx)config.make $(..)Makerules \
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$(sysdep-makefiles) $(sysdep-makeconfigs) \
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(echo 'sysd-rules-sysdirs := $(config-sysdirs)'; \
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for dir in $(config-sysdirs); do \
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*) dir="\$$(..)$$dir" ;; \
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$(check-inhibit-asm) \
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for o in $(all-object-suffixes); do \
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set $(subst :, ,$(sysd-rules-patterns)); \
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while [ $$# -ge 2 ]; do \
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v=$${t%%%}; [ x"$$v" = x ] || v="\$$($${v}CPPFLAGS)"; \
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for s in $$asm .c; do \
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echo "\$$(objpfx)$$t$$o: $$dir/$$d$$s \$$(before-compile)"; \
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echo " \$$(compile-command$$s) $$v"; \
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echo "\$$(inst_includedir)/%.h: $$dir/%.h \$$(+force)"; \
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echo " \$$(do-install)"; \
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echo 'sysd-rules-done = t') > $@T
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ifndef sysd-rules-done
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# Don't do deps until this exists, because it provides rules to make the deps.
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define o-iterator-doit
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$(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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define o-iterator-doit
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$(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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define o-iterator-doit
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$(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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# Omit the objpfx rules when building in the source tree, because
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# objpfx is empty and so these rules just override the ones above.
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# Define first rules to find the source files in $(objpfx).
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# Generated source files will end up there.
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define o-iterator-doit
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$(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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define o-iterator-doit
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$(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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# Generate version maps, but wait until sysdep-subdirs is known
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ifeq ($(sysd-sorted-done),t)
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# eglibc: Even when not using symbol versioning we still need to generate
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# eglibc: version maps to make all the necessary symbols global.
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# eglibc: ifeq ($(versioning),yes)
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-include $(common-objpfx)sysd-versions
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$(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
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common-generated += $(version-maps)
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postclean-generated += sysd-versions Versions.all abi-versions.h \
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Versions.def.v.i Versions.def.v Versions.v.i Versions.v
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ifndef avoid-generated
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ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
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sysd-versions-force = FORCE
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# See %.v/%.v.i implicit rules in Makeconfig.
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$(common-objpfx)Versions.def.v.i: $(..)Versions.def \
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$(wildcard $(add-ons:%=$(..)%/Versions.def))
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$(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
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$(common-objpfx)soversions.i \
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$(common-objpfx)Versions.def.v
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{ while read which lib version setname; do \
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test x"$$which" = xDEFAULT || continue; \
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test -z "$$setname" || echo "$$lib : $$setname"; \
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done < $(word 2,$^); \
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} | LC_ALL=C $(AWK) -f $< > $@T
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# See %.v/%.v.i implicit rules in Makeconfig.
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$(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
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$(wildcard $(sysdirs:%=%/Versions)) \
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$(abi_versions_file) \
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$(sysd-versions-force)
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$(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
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$(common-objpfx)Versions.v \
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$(..)scripts/versions.awk
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( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
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| LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
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-v move_if_change='$(move-if-change)' \
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-v versioning=$(versioning) \
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endif # avoid-generated
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# eglibc: endif # $(versioning) = yes
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endif # sysd-sorted-done
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# Generate .dT files as we compile.
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compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
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compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
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compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
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compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
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# Like compile-mkdep-flags, but for use with $(BUILD_CC). We don't want to
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# track system includes here, they may spuriously trigger an install rule,
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# and would cause the check-local-headers test to fail.
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native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
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# GCC can grok options after the file name, and it looks nicer that way.
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compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
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compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
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compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
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$(ASFLAGS) $(ASFLAGS-$(suffix $@))
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COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
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COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
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$(ASFLAGS) $(ASFLAGS-$(suffix $@))
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# We need this for the output to go in the right place. It will default to
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# empty if make was configured to work with a cc that can't grok -c and -o
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# together. You can't compile the C library with such a compiler.
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OUTPUT_OPTION = -o $@
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# This is the end of the pipeline for compiling generated C code.
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compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
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# We need the $(CFLAGS) to be in there to have the right predefines during
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# the dependency run for C sources. But having it for assembly sources can
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# get the wrong predefines.
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S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
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$(make-target-directory)
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$(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
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$(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
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's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
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$(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
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mv -f $(@:.d=.T) $@ $(generate-md5)
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# Continuation lines here are dangerous because they introduce spaces!
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define sed-remove-objpfx
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-e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
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-e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
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# Include targets in the selected option groups.
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extra-libs += $(extra-libs-y)
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extra-libs-others += $(extra-libs-others-y)
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extra-objs += $(extra-objs-y)
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install-bin += $(install-bin-y)
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install-others += $(install-others-y)
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install-sbin += $(install-sbin-y)
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modules += $(modules-y)
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others += $(others-y)
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others-pie += $(others-pie-y)
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routines += $(routines-y)
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static-only-routines += $(static-only-routines-y)
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sysdep_routines += $(sysdep_routines-y)
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test-srcs += $(test-srcs-y)
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xtests += $(xtests-y)
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# Modify the list of routines we build for different targets
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ifeq (yes,$(build-shared))
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ifndef libc.so-version
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# Undefine this because it can't work when we libc.so is unversioned.
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static-only-routines =
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# Bounded pointer thunks are only built for *.ob
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elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
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elide-routines.oS += $(filter-out $(static-only-routines),\
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$(routines) $(aux) $(sysdep_routines)) \
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elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
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# If we have versioned code we don't need the old versions in any of the
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elide-routines.o += $(shared-only-routines) $(elide-bp-thunks)
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elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
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elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
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elide-routines.ob += $(shared-only-routines)
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# Shared library building.
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ifeq (yes,$(build-shared))
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# Reference map file only when versioning is selected and a map file name
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# eglibc: ifeq ($(versioning),yes)
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map-file = $(firstword $($(@F:.so=-map)) \
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$(addprefix $(common-objpfx), \
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$(filter $(@F:.so=.map),$(version-maps))))
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load-map-file = $(map-file:%=-Wl,--version-script=%)
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# Pattern rule to build a shared object from an archive of PIC objects.
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# This must come after the installation rules so Make doesn't try to
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# build shared libraries in place from the installed *_pic.a files.
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# $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
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# on other shared objects.
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lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
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define build-shlib-helper
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$(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
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$(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
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$(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
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$(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
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-Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
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$(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
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-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
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ifeq (yes,$(use-default-link))
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# If the linker is good enough, we can let it use its default linker script.
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# binutils only position loadable notes into the first page for binaries,
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# not for shared objects
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$(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
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$(LINK.o) -shared -Wl,-O1 \
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-nostdlib -nostartfiles \
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$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
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-Wl,--verbose 2>&1 | \
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-e '/^=========/,/^=========/!d;/^=========/d' \
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$(if $(filter yes,$(have-hash-style)), \
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-e 's/^.*\.gnu\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
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-e '/^[ ]*\.hash[ ]*:.*$$/{h;d;}' \
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-e '/DATA_SEGMENT_ALIGN/{H;g}' \
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-e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
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-e 's/^.*\*(\.dynbss).*$$/& \
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PROVIDE(__start___libc_freeres_ptrs = .); \
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*(__libc_freeres_ptrs) \
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PROVIDE(__stop___libc_freeres_ptrs = .);/'\
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-e 's@^.*\*(\.jcr).*$$@& \
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PROVIDE(__start___libc_subfreeres = .);\
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__libc_subfreeres : { *(__libc_subfreeres) }\
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PROVIDE(__stop___libc_subfreeres = .);\
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PROVIDE(__start___libc_atexit = .);\
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__libc_atexit : { *(__libc_atexit) }\
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PROVIDE(__stop___libc_atexit = .);\
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PROVIDE(__start___libc_thread_subfreeres = .);\
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__libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
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PROVIDE(__stop___libc_thread_subfreeres = .);\
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/DISCARD/ : { *(.gnu.glibc-stub.*) }@'
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common-generated += shlib.lds
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shlib-lds = $(common-objpfx)shlib.lds
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shlib-lds-flags = -T $(shlib-lds)
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$(build-shlib-helper) -o $@ $(shlib-lds-flags) \
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$(csu-objpfx)abi-note.o $(build-shlib-objlist)
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define build-module-helper
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$(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
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$(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
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-B$(csu-objpfx) $(load-map-file) \
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$(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
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-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
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# This macro is similar to build-shlib but it does not define a soname
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# and it does not depend on the destination name to start with `lib'.
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# binutils only position loadable notes into the first page for binaries,
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# not for shared objects
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$(build-module-helper) -o $@ $(shlib-lds-flags) \
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$(csu-objpfx)abi-note.o $(build-module-objlist)
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define build-module-asneeded
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$(build-module-helper) -o $@ $(shlib-lds-flags) \
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$(csu-objpfx)abi-note.o \
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-Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed
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build-module-helper-objlist = \
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$(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
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$(filter-out %.lds $(map-file) $(+preinit) $(+postinit),$^))
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build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
557
build-shlib-objlist = $(build-module-helper-objlist) \
558
$(LDLIBS-$(@F:lib%.so=%).so)
560
# Don't try to use -lc when making libc.so itself.
561
# Also omits crti.o and crtn.o, which we do not want
562
# since we define our own `.init' section specially.
563
LDFLAGS-c.so = -nostdlib -nostartfiles
564
# But we still want to link libc.so against $(libc.so-gnulib).
565
LDLIBS-c.so += $(libc.so-gnulib)
566
# Give libc.so an entry point and make it directly runnable itself.
567
LDFLAGS-c.so += -e __libc_main
568
# If lazy relocation is disabled add the -z now flag.
569
ifeq ($(bind-now),yes)
570
LDFLAGS-c.so += -Wl,-z,now
572
# Pre-link the objects of libc_pic.a so that we can locally resolve
573
# COMMON symbols before we link against ld.so. This is because ld.so
574
# contains some of libc_pic.a already, which will prevent the COMMONs
575
# from being allocated in libc.so, which introduces evil dependencies
576
# between libc.so and ld.so, which can make it impossible to upgrade.
577
$(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
578
$(LINK.o) -nostdlib -nostartfiles -r -o $@ \
579
$(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
581
ifeq (,$(strip $(shlib-lds-flags)))
582
# Generate a list of -R options to excise .gnu.glibc-stub.* sections.
583
$(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
585
$(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
588
# Apply those -R options.
589
$(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
590
$(common-objpfx)libc_pic.os
592
generated += libc_pic.opts libc_pic.os.clean
594
libc_pic_clean := .clean
597
ifneq ($(versioning),yes)
598
# When EGLIBC is built without symbol versioning, local copy of
599
# unwind-dw2-fde-glibc.c is not compiled, so we need to link against
600
# libgcc_eh to get _Unwind_Find_FDE.
601
libc_gcclibs := -lgcc_eh
603
# Use our own special initializer and finalizer files for libc.so.
604
$(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
605
$(common-objpfx)libc_pic.os$(libc_pic_clean) \
606
$(elfobjdir)/sofini.os \
607
$(elfobjdir)/interp.os $(elfobjdir)/ld.so \
609
$(build-shlib) $(libc_gcclibs)
610
# eglibc: ifeq ($(versioning),yes)
611
$(common-objpfx)libc.so: $(common-objpfx)libc.map
613
common-generated += libc.so libc_pic.os
615
install-extras := soinit.o sofini.o
617
ifdef libc.so-version
618
$(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
620
common-generated += libc.so$(libc.so-version)
624
# Figure out the source filenames in this directory.
626
override sources := $(addsuffix .c,\
627
$(filter-out $(elided-routines),\
630
sysdep_routines := $(sysdep_routines)
632
headers := $(headers) $(sysdep_headers)
634
# This is the list of all object files, gotten by
635
# replacing every ".c" in `sources' with a ".o".
636
# We also add bounded-pointer thunks, which are later
637
# elided for all suffixes except for `.ob'.
638
override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
639
$(patsubst %,$(bppfx)%.o,\
640
$(filter $(routines) $(sysdep_routines),$(bp-thunks))))
643
# The makefile may define $(extra-libs) with `libfoo libbar'
644
# to build libfoo.a et al from the modules listed in $(libfoo-routines).
646
# extra-lib.mk is included once for each extra lib to define rules
647
# to build it, and to add its objects to the various variables.
648
# During its evaluation, $(lib) is set to the name of the library.
649
extra-libs-left := $(extra-libs)
650
include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
654
# The makefile may define $(modules-names) to build additional modules.
655
# These are built with $(build-module), except any in $(modules-names-nobuild).
657
# extra-lib.mk is included once for each extra lib to define rules
658
# to build it, and to add its objects to the various variables.
659
# During its evaluation, $(lib) is set to the name of the library.
660
extra-modules-left := $(modules-names)
661
include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
663
extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
664
$(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
665
$(objpfx)%.os $(shlib-lds) \
666
$(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a
670
+depfiles := $(sources:.c=.d) \
671
$(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
672
$(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
673
$(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
674
$(addsuffix .d,$(tests) $(xtests) $(test-srcs))
675
ifeq ($(build-programs),yes)
676
+depfiles += $(addsuffix .d,$(others) $(sysdep-others))
678
+depfiles := $(addprefix $(objpfx),\
679
$(filter-out $(addsuffix .d,$(omit-deps)),\
681
all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
682
+depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
683
$(wildcard $(all-dt-files:.dt=.d))
685
# This is a funny rule in that it removes its input file.
687
@sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
688
mv -f $(@:.d=.T) $@ && \
691
# Avoid the .h.d files for any .sym files whose .h files don't exist yet.
692
# They will be generated when they're needed, and trying too early won't work.
693
+gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
694
+depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
699
-include $(+depfiles)
703
# Maximize efficiency by minimizing the number of rules.
704
.SUFFIXES: # Clear the suffix list. We don't use suffix rules.
705
# Don't define any builtin rules.
706
MAKEFLAGS := $(MAKEFLAGS)r
708
# Generic rule for making directories.
710
# mkdir isn't smart enough to strip a trailing /.
711
# We always require a mkdir which supports the -p option to avoid error
712
# messages in case of races.
715
# Make sure that object files are not removed
716
# when they are intermediates between sources and library members.
717
.PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
719
# Make sure that the parent library archive is never removed.
720
.PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
722
# Use the verbose option of ar and tar when not running silently.
723
ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
729
ARFLAGS := r$(verbose)
730
CREATE_ARFLAGS := cru$(verbose)
732
# This makes all the object files in the parent library archive.
734
.PHONY: lib lib-noranlib
735
lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
736
lib-noranlib: libobjs
738
# For object-suffix $o, the list of objects with that suffix.
739
# Makefiles can define `elide-routines.so = foo' to leave foo.so out.
740
o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
741
$(elide-routines$o)),\
743
$(addprefix $(objpfx),$(o-objects$o))
745
others: $(addprefix $(objpfx),$(install-lib))
749
# Create the stamp$o files to keep the parent makefile happy.
750
subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
751
$(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
752
$(make-target-directory)
756
# Define explicit rules to update each $(objpfx)stamp.SUFFIX
757
# timestamp file; these rules (one explicit rule is generated for each
758
# object suffix) write a list of objects to update in the stamp file.
759
# The parent will then actually add them all to the archive in the
760
# archive rule, below.
761
define o-iterator-doit
762
$(objpfx)stamp$o: $(o-objects); $$(do-stamp)
765
$(make-target-directory)
766
echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
769
object-suffixes-left := $(object-suffixes-for-libc)
770
include $(o-iterator)
774
# Now define explicit rules to build the library archives; these depend
775
# on the stamp files built above.
776
define o-iterator-doit
777
$(common-objpfx)$(patsubst %,$(libtype$o),c): \
778
$(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
781
cd $(common-objdir) && \
782
$(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
784
subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
785
subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
787
$(subdirs-stamps): subdir_lib;
789
object-suffixes-left = $(object-suffixes-for-libc)
790
include $(o-iterator)
793
# This makes all the object files.
794
.PHONY: objects objs libobjs extra-objs
795
objects objs: libobjs extra-objs
796
libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
797
extra-objs: $(addprefix $(objpfx),$(extra-objs))
799
# Canned sequence for building an extra library archive.
800
define build-extra-lib
801
$(patsubst %/,cd % &&,$(objpfx)) \
802
$(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
803
$(patsubst $(objpfx)%,%,$^)
808
.PHONY: force-install
811
# $(install-lib) are installed from the object directory into $(libdir);
812
# files in $(install-lib) matching `lib%.a' are ranlib'd after installation
813
# unless they also appear in $(non-lib.a). $(install-data) are installed as
814
# they are into $(datadir). $(headers) are installed as they are in
815
# $(includedir). $(install-bin), $(install-bin-script) and $(install-sbin)
816
# are installed from the object directory into $(bindir), $(bindir) and
817
# $(sbindir), respectively. $(install-others) and $(install-others-programs)
818
# are absolute path names of files to install; rules to install them are
821
# The simple library name to install libc.a under.
822
# This could be defined by a sysdep Makefile.
828
$(make-target-directory)
829
$(INSTALL_DATA) $< $@
832
# Make the target directory if it doesn't exist, using the `mkinstalldirs'
833
# script that does `mkdir -p' even if `mkdir' doesn't support that flag.
834
define make-target-directory
835
$(addprefix $(..)./scripts/mkinstalldirs ,\
836
$(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
839
# Any directory (parent or subdir) should install libc.a; this way
840
# "make install" in a subdir is guaranteed to install everything it changes.
841
installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
842
$(inst_libdir)/$(patsubst %,$(libtype$o),\
843
$(libprefix)$(libc-name)))
844
installed-libcs := $(installed-libcs) $(inst_libdir)/libc_pic.a
845
install: $(installed-libcs)
846
$(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
847
$(make-target-directory)
848
$(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
850
define do-install-program
851
$(make-target-directory)
852
$(INSTALL_PROGRAM) $< $@.new
856
define do-install-script
857
$(make-target-directory)
858
$(INSTALL_SCRIPT) $< $@.new
862
install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
863
install-lib := $(filter-out %.so %_pic.a,$(install-lib))
865
ifeq (yes,$(build-shared))
866
# Find which .so's have versions.
867
versioned := $(strip $(foreach so,$(install-lib.so),\
868
$(patsubst %,$(so),$($(so)-version))))
870
install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
871
install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
873
# Install the _pic.a files for versioned libraries, and corresponding
875
# libpthread_pic.a breaks mklibs, so don't install it and its map.
876
install-lib := $(install-lib) $(install-lib.so-versioned:%.so=%_pic.a)
877
install-lib := $(filter-out libpthread_pic.a,$(install-lib))
878
# Despite having a soname libhurduser and libmachuser do not use symbol
879
# versioning, so don't install the corresponding .map files.
880
ifeq ($(versioning),yes)
881
install-map := $(patsubst %.so,%.map,\
882
$(foreach L,$(install-lib.so-versioned),$(notdir $L)))
883
install-map := $(filter-out libhurduser.map libmachuser.map libpthread.map,$(install-map))
885
install-map := $(install-map) libc.map
889
# For versioned libraries, we install three files:
890
# $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
891
# $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
892
# $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
893
V := $(firstword $($(subdir)-version) $(version))
894
install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
895
$(foreach L,$(install-lib.so-versioned),\
897
$(inst_slibdir)/$(L:.so=)-$V.so \
898
$(inst_slibdir)/$L$($L-version))
900
# Install all the unversioned shared libraries.
901
$(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
902
$(objpfx)%.so $(+force)
903
$(do-install-program)
905
ifneq ($(findstring -s,$(LN_S)),)
908
$(SHELL) $(..)scripts/rellns-sh $< $@.new
912
# If we have no symbolic links don't bother with rellns-sh.
920
ifeq (yes,$(build-shared))
921
ifeq (no,$(cross-compiling))
922
symbolic-link-prog := $(common-objpfx)elf/sln
923
symbolic-link-list := $(common-objpfx)elf/symlink.list
924
define make-shlib-link
925
echo $(<F) $@ >> $(symbolic-link-list)
927
else # cross-compiling
928
# We need a definition that can be used by elf/Makefile's install rules.
929
symbolic-link-prog = $(LN_S)
932
ifndef make-shlib-link
933
define make-shlib-link
939
ifdef libc.so-version
940
# For a library specified to be version N, install three files:
941
# libc.so -> libc.so.N (e.g. libc.so.6)
942
# libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
944
$(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
947
$(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
948
$(do-install-program)
949
install: $(inst_slibdir)/libc.so$(libc.so-version)
951
# This fragment of linker script gives the OUTPUT_FORMAT statement
952
# for the configuration we are building. We put this statement into
953
# the linker scripts we install for -lc et al so that they will not be
954
# used by a link for a different format on a multi-architecture system.
955
$(common-objpfx)format.lds: $(..)scripts/output-format.sed \
956
$(common-objpfx)config.make \
957
$(common-objpfx)config.h $(..)Makerules
958
ifneq (unknown,$(output-format))
959
echo > $@.new 'OUTPUT_FORMAT($(output-format))'
961
$(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
962
-x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
963
| sed -n -f $< > $@.new
968
common-generated += format.lds
971
# What we install as libc.so for programs to link against is in fact a
972
# link script. It contains references for the various libraries we need.
973
# The libc.so object is not complete since some functions are only defined
974
# in libc_nonshared.a.
975
# We need to use absolute paths since otherwise local copies (if they exist)
976
# of the files are taken by the linker.
977
install: $(inst_libdir)/libc.so
978
$(inst_libdir)/libc.so: $(common-objpfx)format.lds \
979
$(common-objpfx)libc.so$(libc.so-version) \
980
$(inst_libdir)/$(patsubst %,$(libtype.oS),\
981
$(libprefix)$(libc-name)) \
983
(echo '/* GNU ld script';\
984
echo ' Use the shared library, but some functions are only in';\
985
echo ' the static library, so try that secondarily. */';\
987
echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
988
'$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
989
' AS_NEEDED (' $(slibdir)/$(rtld-installed-name) ') )' \
991
ifeq ($(patsubst gnu%,,$(config-os)),)
992
echo 'INPUT ( AS_NEEDED ( -lmachuser -lhurduser ) )' >> $@.new
999
install: $(inst_slibdir)/libc.so
1000
$(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1001
$(do-install-program)
1004
ifneq (,$(versioned))
1005
# Produce three sets of rules as above for all the smaller versioned libraries.
1007
define o-iterator-doit
1008
$(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1010
object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1011
ifneq (,$(object-suffixes-left))
1012
include $(o-iterator)
1015
# Make symlinks in the build directory, because the versioned names might
1016
# be referenced by a DT_NEEDED in another library.
1017
define o-iterator-doit
1018
$(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1020
object-suffixes-left := $(versioned)
1021
include $(o-iterator)
1023
generated += $(foreach o,$(versioned),$o$($o-version))
1025
ifeq (,$($(subdir)-version))
1026
define o-iterator-doit
1027
$(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1031
object-suffixes-left := $(versioned)
1032
include $(o-iterator)
1034
define o-iterator-doit
1035
$(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1036
$$(do-install-program)
1038
object-suffixes-left := $(versioned)
1039
include $(o-iterator)
1041
define o-iterator-doit
1042
$(inst_slibdir)/$o$($o-version): \
1043
$(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1046
object-suffixes-left := $(versioned)
1047
include $(o-iterator)
1049
define o-iterator-doit
1050
$(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1051
$$(do-install-program)
1053
object-suffixes-left := $(versioned)
1054
include $(o-iterator)
1058
define do-install-so
1059
$(do-install-program)
1060
$(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1061
$(filter-out %.so,$@))
1064
so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1065
$(foreach v,$(so-versions),\
1066
$(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1069
$(foreach v,$(so-versions),\
1070
$(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1075
$(addprefix $(inst_bindir)/,$(install-bin)): \
1076
$(inst_bindir)/%: $(objpfx)% $(+force)
1077
$(do-install-program)
1079
ifdef install-bin-script
1080
$(addprefix $(inst_bindir)/,$(install-bin-script)): \
1081
$(inst_bindir)/%: $(objpfx)% $(+force)
1082
$(do-install-script)
1084
ifdef install-rootsbin
1085
$(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1086
$(inst_rootsbindir)/%: $(objpfx)% $(+force)
1087
$(do-install-program)
1090
$(addprefix $(inst_sbindir)/,$(install-sbin)): \
1091
$(inst_sbindir)/%: $(objpfx)% $(+force)
1092
$(do-install-program)
1095
install-lib.a := $(filter lib%.a,$(install-lib))
1096
install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1097
ifdef install-lib-non.a
1098
$(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1099
$(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1103
$(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1104
$(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1109
$(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1112
headers := $(strip $(headers))
1114
# This implicit rule installs headers from the source directory.
1115
# It may be ignored in preference to rules from sysd-rules to find
1116
# headers in the sysdeps tree.
1117
$(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1119
$(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
1121
$(inst_includedir)/%.h: %.h $(+force)
1123
$(inst_includedir)/%.h: $(..)include/%.h $(+force)
1125
headers-nonh := $(filter-out %.h,$(headers))
1127
$(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1130
endif # headers-nonh
1134
$(addprefix $(inst_libdir)/,$(patsubst lib%.map,lib%_pic.map,$(install-map))): \
1135
$(inst_libdir)/lib%_pic.map: $(common-objpfx)lib%.map $(+force)
1139
ifdef install-extras
1140
$(addprefix $(inst_libdir)/libc_pic/,$(install-extras)): \
1141
$(inst_libdir)/libc_pic/%.o: $(elfobjdir)/%.os $(+force)
1145
.PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1146
install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1147
install-data-nosubdir install-headers-nosubdir install-map-nosubdir \
1148
install-extras-nosubdir
1149
install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1150
install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1151
install-rootsbin-nosubdir: \
1152
$(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1153
install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1154
install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1155
$(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1156
$(addprefix $(libprefix),$(install-lib-non.a)))
1157
install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1158
install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1159
install-others-nosubdir: $(install-others)
1160
install-others-programs-nosubdir: $(install-others-programs)
1161
install-map-nosubdir: $(addprefix $(inst_libdir)/,\
1162
$(patsubst lib%.map,lib%_pic.map,$(install-map)))
1163
install-extras-nosubdir: $(addprefix $(inst_libdir)/libc_pic/,\
1166
# We need all the `-nosubdir' targets so that `install' in the parent
1167
# doesn't depend on several things which each iterate over the subdirs.
1168
# This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1169
# subroutine. Then in the parent `install-FOO' also causes subdir makes.
1170
install-%:: install-%-nosubdir ;
1172
.PHONY: install install-no-libc.a-nosubdir
1173
install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1174
install-lib-nosubdir install-others-nosubdir \
1175
install-map-nosubdir install-extras-nosubdir
1176
ifeq ($(build-programs),yes)
1177
install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1178
install-rootsbin-nosubdir install-sbin-nosubdir \
1179
install-others-programs-nosubdir
1181
install: install-no-libc.a-nosubdir
1183
# Command to compile $< using the native libraries.
1184
define native-compile
1185
$(make-target-directory)
1186
$(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1187
$< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
1190
# We always want to use configuration definitions.
1191
ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
1192
-DIS_IN_build -include $(common-objpfx)config.h
1194
# Support the GNU standard name for this target.
1197
# Special target to run tests which cannot be run unconditionally.
1198
# Maintainers should use this target.
1202
all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1203
ifneq (,$(all-nonlib))
1204
cpp-srcs-left = $(all-nonlib:=.c) $(all-nonlib:=.cc)
1206
include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
1209
# The include magic above causes those files to use this variable for flags.
1210
CPPFLAGS-nonlib = -DNOT_IN_libc=1
1213
ifeq ($(versioning),yes)
1214
# Generate normalized lists of symbols, versions, and data sizes.
1215
# This is handy for checking against existing library binaries.
1217
%.symlist: $(..)scripts/abilist.awk %.dynsym
1218
LC_ALL=C $(AWK) -f $^ > $@T
1222
$(OBJDUMP) --dynamic-syms $< > $@T
1225
vpath %.abilist $(+sysdep_dirs)
1227
# The .PRECIOUS rule prevents the files built by an implicit rule whose
1228
# target pattern is %.symlist from being considered "intermediate files"
1229
# and automatically removed. We only want these files to be removed by
1230
# 'make clean', which is handled by the 'generated' variable.
1231
.PRECIOUS: %.symlist
1232
generated += $(extra-libs:=.symlist)
1234
check-abi-%: $(common-objpfx)config.make %.abilist $(objpfx)%.symlist
1236
check-abi-%: $(common-objpfx)config.make %.abilist $(common-objpfx)%.symlist
1239
diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^)
1242
update-abi-%: $(objpfx)%.symlist %.abilist
1244
update-abi-%: $(common-objpfx)%.symlist %.abilist
1247
@if cmp -s $^ 2> /dev/null; \
1249
echo '+++ $(filter %.abilist,$^) is unchanged'; \
1251
echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
1255
.PHONY: update-abi check-abi
1256
update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1257
check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1259
subdir_check-abi: check-abi
1260
subdir_update-abi: update-abi
1262
check-abi: subdir_check-abi
1263
update-abi: subdir_update-abi
1266
ifeq ($(subdir),elf)
1267
check-abi: check-abi-libc
1268
update-abi: update-abi-libc
1269
common-generated += libc.symlist
1272
ifeq ($(build-shared),yes)
1280
# These will have been set by sysdeps/posix/Makefile.
1286
stdio_lim = $(common-objpfx)bits/stdio_lim.h
1288
$(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1289
$(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1290
$(common-objpfx)config.make
1291
$(make-target-directory)
1292
{ echo '#include "$(..)posix/bits/posix1_lim.h"'; \
1293
echo '#define _LIBC 1'; \
1294
echo '#include "$(..)misc/sys/uio.h"'; } | \
1295
$(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' \
1296
$(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
1297
sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
1298
$(@:st=dT) > $(@:st=dt)
1299
mv -f $(@:st=dt) $(@:st=d)
1300
fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; \
1301
filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`; \
1302
iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`; \
1303
fopen_max=$${fopen_max:-16}; \
1304
filename_max=$${filename_max:-1024}; \
1305
if [ -z "$$iov_max" ]; then \
1306
define_iov_max="# undef IOV_MAX"; \
1308
define_iov_max="# define IOV_MAX $$iov_max"; \
1310
sed -e "s/@FOPEN_MAX@/$$fopen_max/" \
1311
-e "s/@FILENAME_MAX@/$$filename_max/" \
1312
-e "s/@L_tmpnam@/$(L_tmpnam)/" \
1313
-e "s/@TMP_MAX@/$(TMP_MAX)/" \
1314
-e "s/@L_ctermid@/$(L_ctermid)/" \
1315
-e "s/@L_cuserid@/$(L_cuserid)/" \
1316
-e "s/@define_IOV_MAX@/$$define_iov_max/" \
1318
$(move-if-change) $(@:st=h.new) $(@:st=h)
1319
# Remove these last so that they can be examined if something went wrong.
1320
rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1324
-include $(stdio_lim:h=d)
1326
common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1330
.PHONY: echo-headers
1334
%.bz2: %; bzip2 -9vk $<
1335
%.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1336
%.xz: %; xz -9evk $<
1338
# Common cleaning targets.
1340
.PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1342
mostlyclean: common-mostlyclean
1345
-rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1347
$(addsuffix -bp.out,$(tests) $(xtests) \
1350
# Remove the object files.
1352
-rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1353
$(others) $(sysdep-others) stubs \
1354
$(addsuffix .o,$(tests) $(xtests) \
1355
$(test-srcs) $(others) \
1357
$(addsuffix -bp,$(tests) $(xtests) \
1359
$(addsuffix .out,$(tests) $(xtests) \
1361
$(addsuffix -bp.out,$(tests) $(xtests) \
1363
-rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1364
$(install-lib) $(install-lib.so) \
1365
$(install-lib.so:%.so=%_pic.a))
1367
-rm -f $(objpfx)rtld-*.os
1370
$(foreach o,$(object-suffixes-for-libc),
1371
-rm -f $(objpfx)stamp$o $(o-objects))
1374
# Also remove the dependencies and generated source files.
1375
common-clean: common-mostlyclean
1376
-rm -f $(addprefix $(objpfx),$(generated))
1377
-rm -f $(objpfx)*.d $(objpfx)*.dt
1378
-rm -fr $(addprefix $(objpfx),$(generated-dirs))
1379
-rm -f $(addprefix $(common-objpfx),$(common-generated))
1380
-rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1382
# Produce a file `stubs' which contains `#define __stub_FUNCTION'
1383
# for each function which is a stub. We grovel over all the .d files
1384
# looking for references to <stub-tag.h>. Then we grovel over each
1385
# referenced source file to see what stub function it defines.
1388
.PHONY: stubs # The parent Makefile calls this target.
1389
stubs: $(objpfx)stubs
1391
objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1392
$(addprefix $(objpfx),$(extra-objs))
1393
$(objpfx)stubs: $(objs-for-stubs)
1394
ifneq (,$(strip $(objs-for-stubs)))
1395
(cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1396
$(AWK) '/\.gnu\.glibc-stub\./ { \
1397
sub(/\.gnu\.glibc-stub\./, "", $$2); \
1399
END { for (s in stubs) print "#define __stub_" s }' > $@T
1405
ifneq (,$(strip $(gpl2lgpl)))
1406
ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1407
# Snarf from the master source and frob the copying notice.
1408
$(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1410
# So I don't edit them by mistake.