mirror of
https://sourceware.org/git/glibc.git
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ac63a0783c
Make runtime-linker.h available outside $(elf-objpfx) by moving the file to $(common-objpfx) and the rules for it to Makerules. Tested for x86_64 and x86 (testsuite, and that no compiled code changed by the patch). * Makeconfig (+interp): Remove unused variable. * elf/Makefile ($(objpfx)interp.os): Define for [$(build-shared) = yes] only. Depend on $(common-objpfx)runtime-linker.h instead of $(elf-objpfx)runtime-linker.h. ($(elf-objpfx)runtime-linker.h): Rename to $(common-objpfx)runtime-linker.h and move ... * Makerules [$(build-shared) = yes]: ... here. * elf/interp.c: Include <runtime-linker.h> instead of <elf/runtime-linker.h>.
1496 lines
51 KiB
Plaintext
1496 lines
51 KiB
Plaintext
# Copyright (C) 1991-2015 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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#
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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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# (through Rules).
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#
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ifneq (,)
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This makefile requires GNU Make.
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endif
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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) $(REQUIRED_MAKE_VERSION))))
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Wrong GNU Make version. See above for the version needed.
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endif
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ifdef subdir
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.. := ../
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endif # subdir
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# If `sources' was defined by the parent makefile, undefine it so
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# we will later get it from wildcard search in this directory.
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ifneq "$(findstring env,$(origin sources))" ""
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sources :=
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endif
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oPATH := $(PATH)
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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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else
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PATH := $(oPATH)
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endif
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ifndef +included-Makeconfig
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include $(..)Makeconfig
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endif
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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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in-Makerules := yes
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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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endif
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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% $(common-objpfx)hurd%,\
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$(before-compile)) \
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$(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
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$(before-compile))
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# Even before that, we need abi-versions.h which is generated right here.
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ifeq ($(build-shared),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) -f $^ > $@T
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mv -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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mv -f $@T $@
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endif # avoid-generated
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endif # $(build-shared) = 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 $(sysdirs:=/libc-abis)) \
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$(..)libc-abis) \
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$(..)Makerules
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$(SHELL) $< \
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$(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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touch $@
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common-generated += $(common-objpfx)libc-abis.h
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endif # avoid-generated
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ifeq (yes,$(build-shared))
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$(common-objpfx)runtime-linker.h: $(common-objpfx)runtime-linker.stamp; @:
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$(common-objpfx)runtime-linker.stamp: $(common-objpfx)config.make
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$(make-target-directory)
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echo '#define RUNTIME_LINKER "$(rtlddir)/$(rtld-installed-name)"' \
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> ${@:stamp=T}
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$(move-if-change) ${@:stamp=T} ${@:stamp=h}
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touch $@
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endif
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# Make sure the subdirectory for object files gets created.
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ifdef objpfx
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ifeq (,$(wildcard $(objpfx).))
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before-compile += $(objpfx).
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$(objpfx).:
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$(make-target-directory)
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endif
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endif
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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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# recompilations.
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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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ifdef before-compile
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$(before-compile):
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endif
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# We don't want $(common-objpfx) files to depend on miscellaneous stuff
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# in subdirs.
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ifdef subdir
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common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
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else
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common-before-compile = $(before-compile)
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endif
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ifndef subdir
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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 $(common-objpfx)FOO.make.
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#
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# We only generate these in the top-level makefile, to avoid any weirdness
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# from subdir-specific makefile tweaks creeping in on an update.
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$(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
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rm -f $@T $@.dT
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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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rm -f $@.dT) > $@T
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mv -f $@T $@
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endif
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ifdef subdir
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sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g' \
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-e 's@^\.\.\/\([^ \]*\)@$$(..)\1@g'
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else
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sed-remove-dotdot := -e 's@ *\([^ \/$$][^ \]*\)@ $$(..)\1@g' \
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-e 's@^\([^ \/$$][^ \]*\)@$$(..)\1@g'
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endif
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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@@@.*$$/#define \1 \2/p' \
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$(@:.h.d=.h)T3 > $(@:.h.d=.h)T
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rm -f $(@:.h.d=.h)T3
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sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
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$(@:.h=.h.d)T > $(@:.h=.h.d)T2
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rm -f $(@:.h=.h.d)T
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mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
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mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
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vpath %.sym $(sysdirs)
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before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
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tests += $(gen-as-const-headers:%.sym=test-as-const-%)
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generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
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$(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
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%.sym $(common-objpfx)%.h
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($(AWK) '{ sub(/^/, "asconst_", $$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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mv -f $@T $@
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endif
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ifeq (yes,$(build-shared))
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# Generate the header containing the names of all shared libraries.
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# We use a stamp file to avoid unnecessary recompilations.
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before-compile += $(common-objpfx)gnu/lib-names.h
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ifeq ($(soversions.mk-done),t)
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ifndef abi-variants
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lib-names-h-abi = gnu/lib-names.h
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lib-names-stmp-abi = gnu/lib-names.stmp
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else
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lib-names-h-abi = gnu/lib-names-$(default-abi).h
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lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
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before-compile += $(common-objpfx)$(lib-names-h-abi)
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common-generated += gnu/lib-names.h
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install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
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$(common-objpfx)gnu/lib-names.h:
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$(make-target-directory)
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{ \
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echo '/* This file is automatically generated.';\
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echo ' It defines macros to allow user program to find the shared'; \
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echo ' library files which come as part of GNU libc. */'; \
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echo '#ifndef __GNU_LIB_NAMES_H'; \
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echo '#define __GNU_LIB_NAMES_H 1'; \
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echo ''; \
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$(if $(abi-includes), \
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$(foreach h,$(abi-includes), echo '#include <$(h)>';) \
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echo '';) \
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$(foreach v,$(abi-variants),\
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$(if $(abi-$(v)-condition),\
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echo '#if $(abi-$(v)-condition)'; \
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echo '# include <gnu/lib-names-$(v).h>'); \
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$(if $(abi-$(v)-condition),echo '#endif';)) \
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echo ''; \
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echo '#endif /* gnu/lib-names.h */'; \
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} > $@
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endif
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$(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
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$(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
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$(common-objpfx)soversions.i
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$(make-target-directory)
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{ \
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$(if $(abi-variants), \
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echo '/* This file is automatically generated. */';\
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echo '#ifndef __GNU_LIB_NAMES_H'; \
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echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
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echo '#endif';, \
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echo '/* This file is automatically generated.';\
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echo ' It defines macros to allow user program to find the shared'; \
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echo ' library files which come as part of GNU libc. */'; \
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echo '#ifndef __GNU_LIB_NAMES_H'; \
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echo '#define __GNU_LIB_NAMES_H 1';) \
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echo ''; \
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($(foreach s,$(all-sonames), echo $(s);)) \
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| LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
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$(if $(abi-variants),, \
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echo ''; \
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echo '#endif /* gnu/lib-names.h */';) \
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} > ${@:stmp=T}
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$(move-if-change) ${@:stmp=T} ${@:stmp=h}
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touch $@
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endif
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common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
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endif
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###############################################################################
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# NOTE! Everything adding to before-compile needs to come before this point! #
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###############################################################################
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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' regexps
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# matching sysdep directories whose assembly source files should be
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# suppressed.
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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 $(+sysdep_dirs) the sysd-rules was computed for
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# differs from the one we are using now. So force a rebuild of sysd-rules.
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sysd-rules-force = FORCE
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FORCE:
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endif
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$(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
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$(common-objpfx)config.make $(..)Makerules \
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$(sysdep-makefiles) $(sysdep-makeconfigs) \
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$(sysd-rules-force)
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-@rm -f $@T
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LC_ALL=C $(AWK) -f $< > $@T \
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-v all_object_suffixes='$(all-object-suffixes)' \
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-v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
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-v sysd_rules_patterns='$(sysd-rules-patterns)' \
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-v config_sysdirs='$(config-sysdirs)'
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mv -f $@T $@
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ifndef sysd-rules-done
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# Don't do deps until this exists, because it provides rules to make the deps.
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no_deps=t
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endif
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define o-iterator-doit
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$(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
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endef
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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|
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define o-iterator-doit
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$(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
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endef
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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|
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define o-iterator-doit
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$(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
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endef
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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|
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# Omit the objpfx rules when building in the source tree, because
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# objpfx is empty and so these rules just override the ones above.
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ifdef objpfx
|
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# Define first rules to find the source files in $(objpfx).
|
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# Generated source files will end up there.
|
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define o-iterator-doit
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$(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
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endef
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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||
|
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define o-iterator-doit
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$(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
|
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endef
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object-suffixes-left := $(all-object-suffixes)
|
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include $(o-iterator)
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endif
|
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|
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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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ifeq ($(build-shared),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 Versions.v.i Versions.v
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||
|
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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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FORCE:
|
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endif
|
||
|
||
$(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \
|
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$(common-objpfx)Versions.v
|
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LC_ALL=C $(AWK) -f $^ > $@T
|
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mv -f $@T $@
|
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|
||
$(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
|
||
$(common-objpfx)soversions.i \
|
||
$(common-objpfx)Versions.def
|
||
{ while read which lib version setname; do \
|
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test x"$$which" = xDEFAULT || continue; \
|
||
test -z "$$setname" || echo "$$lib : $$setname"; \
|
||
done < $(word 2,$^); \
|
||
cat $(word 3,$^); \
|
||
} | LC_ALL=C $(AWK) -f $< > $@T
|
||
mv -f $@T $@
|
||
# See %.v/%.v.i implicit rules in Makeconfig.
|
||
$(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
|
||
$(wildcard $(sysdirs:%=%/Versions)) \
|
||
$(sysd-versions-force)
|
||
$(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
|
||
$(common-objpfx)Versions.v \
|
||
$(..)scripts/versions.awk
|
||
( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
|
||
cat $(word 2,$^) \
|
||
| LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
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||
-v move_if_change='$(move-if-change)' \
|
||
-f $(word 3,$^); \
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) > $@T
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mv -f $@T $@
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endif # avoid-generated
|
||
endif # $(build-shared) = yes
|
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endif # sysd-sorted-done
|
||
|
||
# Generate .dT files as we compile.
|
||
compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
|
||
compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
|
||
compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
|
||
compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
|
||
|
||
# Like compile-mkdep-flags, but for use with $(BUILD_CC). We don't want to
|
||
# track system includes here, they may spuriously trigger an install rule,
|
||
# and would cause the check-local-headers test to fail.
|
||
native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
|
||
|
||
# GCC can grok options after the file name, and it looks nicer that way.
|
||
compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
|
||
compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
|
||
compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
|
||
$(ASFLAGS) $(ASFLAGS-$(suffix $@))
|
||
COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
|
||
COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
|
||
$(ASFLAGS) $(ASFLAGS-$(suffix $@))
|
||
|
||
# We need this for the output to go in the right place. It will default to
|
||
# empty if make was configured to work with a cc that can't grok -c and -o
|
||
# together. You can't compile the C library with such a compiler.
|
||
OUTPUT_OPTION = -o $@
|
||
|
||
# This is the end of the pipeline for compiling generated C code.
|
||
compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
|
||
|
||
# We need the $(CFLAGS) to be in there to have the right predefines during
|
||
# the dependency run for C sources. But having it for assembly sources can
|
||
# get the wrong predefines.
|
||
S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
|
||
|
||
define +make-deps
|
||
$(make-target-directory)
|
||
$(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
|
||
$(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
|
||
's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
|
||
$(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
|
||
mv -f $(@:.d=.T) $@ $(generate-md5)
|
||
endef
|
||
|
||
ifneq (,$(objpfx))
|
||
# Continuation lines here are dangerous because they introduce spaces!
|
||
define sed-remove-objpfx
|
||
-e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
|
||
-e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
|
||
endef
|
||
endif
|
||
|
||
# Modify the list of routines we build for different targets
|
||
|
||
ifeq (yes,$(build-shared))
|
||
ifndef libc.so-version
|
||
# Undefine this because it can't work when we libc.so is unversioned.
|
||
static-only-routines =
|
||
endif
|
||
endif
|
||
|
||
elide-routines.oS += $(filter-out $(static-only-routines),\
|
||
$(routines) $(aux) $(sysdep_routines))
|
||
elide-routines.os += $(static-only-routines)
|
||
|
||
# If we have versioned code we don't need the old versions in any of the
|
||
# static libraries.
|
||
elide-routines.o += $(shared-only-routines)
|
||
elide-routines.op += $(shared-only-routines)
|
||
elide-routines.og += $(shared-only-routines)
|
||
|
||
# Shared library building.
|
||
|
||
ifeq (yes,$(build-shared))
|
||
|
||
# Reference map file only when shared libraries are built and a map file name
|
||
# is given.
|
||
ifeq ($(build-shared),yes)
|
||
map-file = $(firstword $($(@F:.so=-map)) \
|
||
$(addprefix $(common-objpfx), \
|
||
$(filter $(@F:.so=.map),$(version-maps))))
|
||
load-map-file = $(map-file:%=-Wl,--version-script=%)
|
||
endif
|
||
|
||
# Compiler arguments to use to link a shared object with libc and
|
||
# ld.so. This is intended to be as similar as possible to a default
|
||
# link with an installed libc.
|
||
link-libc-args = -Wl,--start-group \
|
||
$(libc-for-link) \
|
||
$(common-objpfx)libc_nonshared.a \
|
||
$(as-needed) $(elf-objpfx)ld.so $(no-as-needed) \
|
||
-Wl,--end-group
|
||
|
||
# The corresponding shared libc to use. This may be modified for a
|
||
# particular target.
|
||
libc-for-link = $(common-objpfx)libc.so
|
||
|
||
# The corresponding dependencies. As these are used in dependencies,
|
||
# not just commands, they cannot use target-specific variables so need
|
||
# to name both possible libc.so objects.
|
||
link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
|
||
$(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so
|
||
|
||
# Pattern rule to build a shared object from an archive of PIC objects.
|
||
# This must come after the installation rules so Make doesn't try to
|
||
# build shared libraries in place from the installed *_pic.a files.
|
||
# $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
|
||
# on other shared objects. The linking with libc and ld.so is intended
|
||
# to be as similar as possible to a default link with an installed libc.
|
||
lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
|
||
$(build-shlib) $(link-libc-args)
|
||
$(call after-link,$@)
|
||
|
||
define build-shlib-helper
|
||
$(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
|
||
$(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
|
||
$(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
|
||
$(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
|
||
-Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
|
||
$(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
|
||
-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
|
||
endef
|
||
|
||
ifeq (yes,$(use-default-link))
|
||
# If the linker is good enough, we can let it use its default linker script.
|
||
shlib-lds =
|
||
shlib-lds-flags =
|
||
else
|
||
# binutils only position loadable notes into the first page for binaries,
|
||
# not for shared objects
|
||
$(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
|
||
$(LINK.o) -shared -Wl,-O1 \
|
||
-nostdlib -nostartfiles \
|
||
$(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
|
||
-Wl,--verbose 2>&1 | \
|
||
sed > $@T \
|
||
-e '/^=========/,/^=========/!d;/^=========/d' \
|
||
$(if $(filter yes,$(have-hash-style)), \
|
||
-e 's/^.*\.gnu\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
|
||
-e '/^[ ]*\.hash[ ]*:.*$$/{h;d;}' \
|
||
-e '/DATA_SEGMENT_ALIGN/{H;g}' \
|
||
, \
|
||
-e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
|
||
) \
|
||
-e 's/^.*\*(\.dynbss).*$$/& \
|
||
PROVIDE(__start___libc_freeres_ptrs = .); \
|
||
*(__libc_freeres_ptrs) \
|
||
PROVIDE(__stop___libc_freeres_ptrs = .);/'\
|
||
-e 's@^.*\*(\.jcr).*$$@& \
|
||
PROVIDE(__start___libc_subfreeres = .);\
|
||
__libc_subfreeres : { *(__libc_subfreeres) }\
|
||
PROVIDE(__stop___libc_subfreeres = .);\
|
||
PROVIDE(__start___libc_atexit = .);\
|
||
__libc_atexit : { *(__libc_atexit) }\
|
||
PROVIDE(__stop___libc_atexit = .);\
|
||
PROVIDE(__start___libc_thread_subfreeres = .);\
|
||
__libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
|
||
PROVIDE(__stop___libc_thread_subfreeres = .);\
|
||
/DISCARD/ : { *(.gnu.glibc-stub.*) }@'
|
||
test -s $@T
|
||
mv -f $@T $@
|
||
common-generated += shlib.lds
|
||
|
||
shlib-lds = $(common-objpfx)shlib.lds
|
||
shlib-lds-flags = -T $(shlib-lds)
|
||
endif
|
||
|
||
define build-shlib
|
||
$(build-shlib-helper) -o $@ $(shlib-lds-flags) \
|
||
$(csu-objpfx)abi-note.o $(build-shlib-objlist)
|
||
endef
|
||
|
||
define build-module-helper
|
||
$(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
|
||
$(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
|
||
-B$(csu-objpfx) $(load-map-file) \
|
||
$(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
|
||
-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
|
||
endef
|
||
|
||
# This macro is similar to build-shlib but it does not define a soname
|
||
# and it does not depend on the destination name to start with `lib'.
|
||
# binutils only position loadable notes into the first page for binaries,
|
||
# not for shared objects
|
||
define build-module
|
||
$(build-module-helper) -o $@ $(shlib-lds-flags) \
|
||
$(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
|
||
$(call after-link,$@)
|
||
endef
|
||
define build-module-asneeded
|
||
$(build-module-helper) -o $@ $(shlib-lds-flags) \
|
||
$(csu-objpfx)abi-note.o \
|
||
-Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
|
||
$(link-libc-args)
|
||
$(call after-link,$@)
|
||
endef
|
||
|
||
build-module-helper-objlist = \
|
||
$(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
|
||
$(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
|
||
$(link-libc-deps),$^))
|
||
|
||
build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
|
||
build-shlib-objlist = $(build-module-helper-objlist) \
|
||
$(LDLIBS-$(@F:lib%.so=%).so)
|
||
|
||
# Don't try to use -lc when making libc.so itself.
|
||
# Also omits crti.o and crtn.o, which we do not want
|
||
# since we define our own `.init' section specially.
|
||
LDFLAGS-c.so = -nostdlib -nostartfiles
|
||
# But we still want to link libc.so against $(libc.so-gnulib).
|
||
LDLIBS-c.so += $(libc.so-gnulib)
|
||
# Give libc.so an entry point and make it directly runnable itself.
|
||
LDFLAGS-c.so += -e __libc_main
|
||
# If lazy relocation is disabled add the -z now flag.
|
||
ifeq ($(bind-now),yes)
|
||
LDFLAGS-c.so += -Wl,-z,now
|
||
endif
|
||
# Pre-link the objects of libc_pic.a so that we can locally resolve
|
||
# COMMON symbols before we link against ld.so. This is because ld.so
|
||
# contains some of libc_pic.a already, which will prevent the COMMONs
|
||
# from being allocated in libc.so, which introduces evil dependencies
|
||
# between libc.so and ld.so, which can make it impossible to upgrade.
|
||
$(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
|
||
$(LINK.o) -nostdlib -nostartfiles -r -o $@ \
|
||
$(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
|
||
|
||
ifeq (,$(strip $(shlib-lds-flags)))
|
||
# Generate a list of -R options to excise .gnu.glibc-stub.* sections.
|
||
$(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
|
||
$(OBJDUMP) -h $< | \
|
||
$(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
|
||
> $@T
|
||
mv -f $@T $@
|
||
# Apply those -R options.
|
||
$(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
|
||
$(common-objpfx)libc_pic.os
|
||
$(OBJCOPY) @$^ $@
|
||
generated += libc_pic.opts libc_pic.os.clean
|
||
|
||
libc_pic_clean := .clean
|
||
endif
|
||
|
||
# Build a possibly-modified version of libc_pic.a for use in building
|
||
# linkobj/libc.so.
|
||
ifeq (,$(filter sunrpc,$(subdirs)))
|
||
$(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
|
||
$(make-target-directory)
|
||
ln -f $< $@
|
||
else
|
||
$(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
|
||
$(common-objpfx)sunrpc/librpc_compat_pic.a
|
||
$(make-target-directory)
|
||
(cd $(common-objpfx)linkobj; \
|
||
$(AR) x ../libc_pic.a; \
|
||
rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
|
||
$(AR) x ../sunrpc/librpc_compat_pic.a; \
|
||
$(AR) cr libc_pic.a *.os; \
|
||
rm *.os)
|
||
endif # $(subdirs) contains sunrpc
|
||
|
||
# Clear link-libc-deps for the libc.so libraries so build-shlibs does not
|
||
# filter ld.so out of the list of linked objects.
|
||
$(common-objpfx)libc.so: link-libc-deps = # empty
|
||
$(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
|
||
|
||
# Use our own special initializer and finalizer files for the libc.so
|
||
# libraries.
|
||
$(common-objpfx)libc.so: $(elf-objpfx)soinit.os \
|
||
$(common-objpfx)libc_pic.os$(libc_pic_clean) \
|
||
$(elf-objpfx)sofini.os \
|
||
$(elf-objpfx)interp.os \
|
||
$(elf-objpfx)ld.so \
|
||
$(shlib-lds)
|
||
$(build-shlib)
|
||
$(call after-link,$@)
|
||
|
||
$(common-objpfx)linkobj/libc.so: $(elf-objpfx)soinit.os \
|
||
$(common-objpfx)linkobj/libc_pic.a \
|
||
$(elf-objpfx)sofini.os \
|
||
$(elf-objpfx)interp.os \
|
||
$(elf-objpfx)ld.so \
|
||
$(shlib-lds)
|
||
$(build-shlib)
|
||
$(call after-link,$@)
|
||
|
||
ifeq ($(build-shared),yes)
|
||
$(common-objpfx)libc.so: $(common-objpfx)libc.map
|
||
endif
|
||
common-generated += libc.so libc_pic.os
|
||
ifdef libc.so-version
|
||
$(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
|
||
$(make-link)
|
||
common-generated += libc.so$(libc.so-version)
|
||
endif
|
||
endif
|
||
|
||
# Figure out the source filenames in this directory.
|
||
|
||
override sources := $(addsuffix .c,\
|
||
$(filter-out $(elided-routines),\
|
||
$(routines) $(aux) \
|
||
$(sysdep_routines)))
|
||
sysdep_routines := $(sysdep_routines)
|
||
|
||
headers := $(headers) $(sysdep_headers)
|
||
|
||
# This is the list of all object files, gotten by
|
||
# replacing every ".c" in `sources' with a ".o".
|
||
override objects := $(addprefix $(objpfx),$(sources:.c=.o))
|
||
|
||
|
||
# The makefile may define $(extra-libs) with `libfoo libbar'
|
||
# to build libfoo.a et al from the modules listed in $(libfoo-routines).
|
||
ifdef extra-libs
|
||
# extra-lib.mk is included once for each extra lib to define rules
|
||
# to build it, and to add its objects to the various variables.
|
||
# During its evaluation, $(lib) is set to the name of the library.
|
||
extra-libs-left := $(extra-libs)
|
||
include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
|
||
endif
|
||
|
||
|
||
# The makefile may define $(modules-names) to build additional modules.
|
||
# These are built with $(build-module), except any in $(modules-names-nobuild).
|
||
ifdef modules-names
|
||
# extra-lib.mk is included once for each extra lib to define rules
|
||
# to build it, and to add its objects to the various variables.
|
||
# During its evaluation, $(lib) is set to the name of the library.
|
||
extra-modules-left := $(modules-names)
|
||
include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
|
||
|
||
extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
|
||
$(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
|
||
$(objpfx)%.os $(shlib-lds) $(link-libs-deps)
|
||
$(build-module)
|
||
endif
|
||
|
||
+depfiles := $(sources:.c=.d) \
|
||
$(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
|
||
$(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
|
||
$(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
|
||
$(addsuffix .d,$(tests) $(xtests) $(test-srcs))
|
||
ifeq ($(build-programs),yes)
|
||
+depfiles += $(addsuffix .d,$(others) $(sysdep-others))
|
||
endif
|
||
+depfiles := $(addprefix $(objpfx),\
|
||
$(filter-out $(addsuffix .d,$(omit-deps)),\
|
||
$(+depfiles)))
|
||
all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
|
||
+depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
|
||
$(wildcard $(all-dt-files:.dt=.d))
|
||
|
||
# This is a funny rule in that it removes its input file.
|
||
%.d: %.dt
|
||
@sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
|
||
mv -f $(@:.d=.T) $@ && \
|
||
rm -f $<
|
||
|
||
# Avoid the .h.d files for any .sym files whose .h files don't exist yet.
|
||
# They will be generated when they're needed, and trying too early won't work.
|
||
+gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
|
||
+depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
|
||
$(+gen-as-const)))
|
||
|
||
ifdef +depfiles
|
||
ifneq ($(no_deps),t)
|
||
-include $(+depfiles)
|
||
endif
|
||
endif
|
||
|
||
# Maximize efficiency by minimizing the number of rules.
|
||
.SUFFIXES: # Clear the suffix list. We don't use suffix rules.
|
||
# Don't define any builtin rules.
|
||
MAKEFLAGS := $(MAKEFLAGS)r
|
||
|
||
# Generic rule for making directories.
|
||
%/:
|
||
# mkdir isn't smart enough to strip a trailing /.
|
||
# We always require a mkdir which supports the -p option to avoid error
|
||
# messages in case of races.
|
||
mkdir -p $(@:%/=%)
|
||
|
||
# Make sure that object files are not removed
|
||
# when they are intermediates between sources and library members.
|
||
.PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
|
||
|
||
# Make sure that the parent library archive is never removed.
|
||
.PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
|
||
|
||
# Use the verbose option of ar and tar when not running silently.
|
||
ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
|
||
verbose := v
|
||
else # -s
|
||
verbose :=
|
||
endif # not -s
|
||
|
||
ARFLAGS := r$(verbose)
|
||
CREATE_ARFLAGS := cru$(verbose)
|
||
|
||
# This makes all the object files in the parent library archive.
|
||
|
||
.PHONY: lib lib-noranlib
|
||
lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
|
||
lib-noranlib: libobjs
|
||
|
||
# For object-suffix $o, the list of objects with that suffix.
|
||
# Makefiles can define `elide-routines.so = foo' to leave foo.so out.
|
||
o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
|
||
$(elide-routines$o)),\
|
||
$(objects))) \
|
||
$(addprefix $(objpfx),$(o-objects$o))
|
||
|
||
others: $(addprefix $(objpfx),$(install-lib))
|
||
|
||
ifndef objects
|
||
|
||
# Create the stamp$o files to keep the parent makefile happy.
|
||
subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
|
||
$(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
|
||
$(make-target-directory)
|
||
rm -f $@; > $@
|
||
else
|
||
|
||
# Define explicit rules to update each $(objpfx)stamp.SUFFIX
|
||
# timestamp file; these rules (one explicit rule is generated for each
|
||
# object suffix) write a list of objects to update in the stamp file.
|
||
# The parent will then actually add them all to the archive in the
|
||
# archive rule, below.
|
||
define o-iterator-doit
|
||
$(objpfx)stamp$o: $(o-objects); $$(do-stamp)
|
||
endef
|
||
define do-stamp
|
||
$(make-target-directory)
|
||
echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
|
||
mv -f $@T $@
|
||
endef
|
||
object-suffixes-left := $(object-suffixes-for-libc)
|
||
include $(o-iterator)
|
||
|
||
endif
|
||
|
||
# Now define explicit rules to build the library archives; these depend
|
||
# on the stamp files built above.
|
||
define o-iterator-doit
|
||
$(common-objpfx)$(patsubst %,$(libtype$o),c): \
|
||
$(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
|
||
endef
|
||
define do-makelib
|
||
cd $(common-objdir) && \
|
||
$(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
|
||
endef
|
||
subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
|
||
subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
|
||
ifndef subdir
|
||
$(subdirs-stamps): subdir_lib;
|
||
endif
|
||
object-suffixes-left = $(object-suffixes-for-libc)
|
||
include $(o-iterator)
|
||
|
||
|
||
# This makes all the object files.
|
||
.PHONY: objects objs libobjs extra-objs
|
||
objects objs: libobjs extra-objs
|
||
libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
|
||
extra-objs: $(addprefix $(objpfx),$(extra-objs))
|
||
|
||
# Canned sequence for building an extra library archive.
|
||
define build-extra-lib
|
||
$(patsubst %/,cd % &&,$(objpfx)) \
|
||
$(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
|
||
$(patsubst $(objpfx)%,%,$^)
|
||
endef
|
||
|
||
# Installation.
|
||
|
||
.PHONY: force-install
|
||
force-install:
|
||
|
||
# $(install-lib) are installed from the object directory into $(libdir);
|
||
# files in $(install-lib) matching `lib%.a' are ranlib'd after installation
|
||
# unless they also appear in $(non-lib.a). $(install-data) are installed as
|
||
# they are into $(datadir). $(headers) are installed as they are in
|
||
# $(includedir). $(install-bin), $(install-bin-script) and $(install-sbin)
|
||
# are installed from the object directory into $(bindir), $(bindir) and
|
||
# $(sbindir), respectively. $(install-others) and $(install-others-programs)
|
||
# are absolute path names of files to install; rules to install them are
|
||
# defined elsewhere.
|
||
|
||
# The simple library name to install libc.a under.
|
||
# This could be defined by a sysdep Makefile.
|
||
ifndef libc-name
|
||
libc-name := c
|
||
endif
|
||
|
||
define do-install
|
||
$(make-target-directory)
|
||
$(INSTALL_DATA) $< $@
|
||
endef
|
||
|
||
# Make the target directory if it doesn't exist, using the `mkinstalldirs'
|
||
# script that does `mkdir -p' even if `mkdir' doesn't support that flag.
|
||
define make-target-directory
|
||
$(addprefix $(..)./scripts/mkinstalldirs ,\
|
||
$(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
|
||
endef
|
||
|
||
# Any directory (parent or subdir) should install libc.a; this way
|
||
# "make install" in a subdir is guaranteed to install everything it changes.
|
||
installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
|
||
$(inst_libdir)/$(patsubst %,$(libtype$o),\
|
||
$(libprefix)$(libc-name)))
|
||
install: $(installed-libcs)
|
||
$(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
|
||
$(make-target-directory)
|
||
$(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
|
||
|
||
define do-install-program
|
||
$(make-target-directory)
|
||
$(INSTALL_PROGRAM) $< $@.new
|
||
mv -f $@.new $@
|
||
endef
|
||
|
||
define do-install-script
|
||
$(make-target-directory)
|
||
$(INSTALL_SCRIPT) $< $@.new
|
||
mv -f $@.new $@
|
||
endef
|
||
|
||
install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
|
||
install-lib := $(filter-out %.so %_pic.a,$(install-lib))
|
||
|
||
ifeq (yes,$(build-shared))
|
||
# Find which .so's have versions.
|
||
versioned := $(strip $(foreach so,$(install-lib.so),\
|
||
$(patsubst %,$(so),$($(so)-version))))
|
||
|
||
install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
|
||
install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
|
||
|
||
# For versioned libraries, we install three files:
|
||
# $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
|
||
# $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
|
||
# $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
|
||
lib-version := $(firstword $($(subdir)-version) $(version))
|
||
install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
|
||
$(foreach L,$(install-lib.so-versioned),\
|
||
$(inst_libdir)/$L \
|
||
$(inst_slibdir)/$(L:.so=)-$(lib-version).so \
|
||
$(inst_slibdir)/$L$($L-version))
|
||
|
||
# Install all the unversioned shared libraries.
|
||
$(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
|
||
$(objpfx)%.so $(+force)
|
||
$(do-install-program)
|
||
|
||
ifneq ($(findstring -s,$(LN_S)),)
|
||
define make-link
|
||
rm -f $@.new
|
||
$(SHELL) $(..)scripts/rellns-sh $< $@.new
|
||
mv -f $@.new $@
|
||
endef
|
||
else
|
||
# If we have no symbolic links don't bother with rellns-sh.
|
||
define make-link
|
||
rm -f $@.new
|
||
$(LN_S) $< $@.new
|
||
mv -f $@.new $@
|
||
endef
|
||
endif
|
||
|
||
ifeq (yes,$(build-shared))
|
||
ifeq (no,$(cross-compiling))
|
||
symbolic-link-prog := $(elf-objpfx)sln
|
||
symbolic-link-list := $(elf-objpfx)symlink.list
|
||
define make-shlib-link
|
||
echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
|
||
endef
|
||
else # cross-compiling
|
||
# We need a definition that can be used by elf/Makefile's install rules.
|
||
symbolic-link-prog = $(LN_S)
|
||
endif
|
||
endif
|
||
ifndef make-shlib-link
|
||
define make-shlib-link
|
||
rm -f $@
|
||
$(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
|
||
endef
|
||
endif
|
||
|
||
ifdef libc.so-version
|
||
# For a library specified to be version N, install three files:
|
||
# libc.so -> libc.so.N (e.g. libc.so.6)
|
||
# libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
|
||
|
||
$(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
|
||
$(+force)
|
||
$(make-shlib-link)
|
||
$(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
|
||
$(do-install-program)
|
||
install: $(inst_slibdir)/libc.so$(libc.so-version)
|
||
|
||
# This fragment of linker script gives the OUTPUT_FORMAT statement
|
||
# for the configuration we are building. We put this statement into
|
||
# the linker scripts we install for -lc et al so that they will not be
|
||
# used by a link for a different format on a multi-architecture system.
|
||
$(common-objpfx)format.lds: $(..)scripts/output-format.sed \
|
||
$(common-objpfx)config.make \
|
||
$(common-objpfx)config.h $(..)Makerules
|
||
ifneq (unknown,$(output-format))
|
||
echo > $@.new 'OUTPUT_FORMAT($(output-format))'
|
||
else
|
||
$(LINK.o) -shared $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
|
||
-x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
|
||
| sed -n -f $< > $@.new
|
||
test -s $@.new
|
||
rm -f $@.so
|
||
endif
|
||
mv -f $@.new $@
|
||
common-generated += format.lds
|
||
|
||
ifndef subdir
|
||
# What we install as libc.so for programs to link against is in fact a
|
||
# link script. It contains references for the various libraries we need.
|
||
# The libc.so object is not complete since some functions are only defined
|
||
# in libc_nonshared.a.
|
||
# We need to use absolute paths since otherwise local copies (if they exist)
|
||
# of the files are taken by the linker.
|
||
install: $(inst_libdir)/libc.so
|
||
$(inst_libdir)/libc.so: $(common-objpfx)format.lds \
|
||
$(common-objpfx)libc.so$(libc.so-version) \
|
||
$(inst_libdir)/$(patsubst %,$(libtype.oS),\
|
||
$(libprefix)$(libc-name)) \
|
||
$(+force)
|
||
(echo '/* GNU ld script';\
|
||
echo ' Use the shared library, but some functions are only in';\
|
||
echo ' the static library, so try that secondarily. */';\
|
||
cat $<; \
|
||
echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
|
||
'$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
|
||
' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
|
||
) > $@.new
|
||
mv -f $@.new $@
|
||
|
||
endif
|
||
|
||
else
|
||
install: $(inst_slibdir)/libc.so
|
||
$(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
|
||
$(do-install-program)
|
||
endif
|
||
|
||
ifneq (,$(versioned))
|
||
# Produce three sets of rules as above for all the smaller versioned libraries.
|
||
|
||
define o-iterator-doit
|
||
$(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
|
||
endef
|
||
object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
|
||
ifneq (,$(object-suffixes-left))
|
||
include $(o-iterator)
|
||
endif
|
||
|
||
# Make symlinks in the build directory, because the versioned names might
|
||
# be referenced by a DT_NEEDED in another library.
|
||
define o-iterator-doit
|
||
$(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
|
||
endef
|
||
object-suffixes-left := $(versioned)
|
||
include $(o-iterator)
|
||
|
||
generated += $(foreach o,$(versioned),$o$($o-version))
|
||
|
||
ifeq (,$($(subdir)-version))
|
||
define o-iterator-doit
|
||
$(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
|
||
$(+force);
|
||
$$(make-shlib-link)
|
||
endef
|
||
object-suffixes-left := $(versioned)
|
||
include $(o-iterator)
|
||
|
||
define o-iterator-doit
|
||
$(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
|
||
$$(do-install-program)
|
||
endef
|
||
object-suffixes-left := $(versioned)
|
||
include $(o-iterator)
|
||
else
|
||
define o-iterator-doit
|
||
$(inst_slibdir)/$o$($o-version): \
|
||
$(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
|
||
$$(make-shlib-link)
|
||
endef
|
||
object-suffixes-left := $(versioned)
|
||
include $(o-iterator)
|
||
|
||
define o-iterator-doit
|
||
$(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
|
||
$$(do-install-program)
|
||
endef
|
||
object-suffixes-left := $(versioned)
|
||
include $(o-iterator)
|
||
endif
|
||
endif
|
||
|
||
define do-install-so
|
||
$(do-install-program)
|
||
$(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
|
||
$(filter-out %.so,$@))
|
||
endef
|
||
|
||
so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
|
||
$(foreach v,$(so-versions),\
|
||
$(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
|
||
$(+force)
|
||
$(do-install-so)
|
||
$(foreach v,$(so-versions),\
|
||
$(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
|
||
$(do-install-so)
|
||
endif
|
||
|
||
ifdef install-bin
|
||
$(addprefix $(inst_bindir)/,$(install-bin)): \
|
||
$(inst_bindir)/%: $(objpfx)% $(+force)
|
||
$(do-install-program)
|
||
endif
|
||
ifdef install-bin-script
|
||
$(addprefix $(inst_bindir)/,$(install-bin-script)): \
|
||
$(inst_bindir)/%: $(objpfx)% $(+force)
|
||
$(do-install-script)
|
||
endif
|
||
ifdef install-rootsbin
|
||
$(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
|
||
$(inst_rootsbindir)/%: $(objpfx)% $(+force)
|
||
$(do-install-program)
|
||
endif
|
||
ifdef install-sbin
|
||
$(addprefix $(inst_sbindir)/,$(install-sbin)): \
|
||
$(inst_sbindir)/%: $(objpfx)% $(+force)
|
||
$(do-install-program)
|
||
endif
|
||
ifdef install-lib
|
||
install-lib.a := $(filter lib%.a,$(install-lib))
|
||
install-lib-non.a := $(filter-out lib%.a,$(install-lib))
|
||
ifdef install-lib-non.a
|
||
$(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
|
||
$(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
|
||
$(do-install)
|
||
endif
|
||
ifdef install-lib.a
|
||
$(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
|
||
$(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
|
||
$(do-install)
|
||
endif
|
||
endif
|
||
ifdef install-data
|
||
$(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
|
||
$(do-install)
|
||
endif
|
||
headers := $(strip $(headers))
|
||
ifdef headers
|
||
# This implicit rule installs headers from the source directory.
|
||
# It may be ignored in preference to rules from sysd-rules to find
|
||
# headers in the sysdeps tree.
|
||
$(inst_includedir)/%.h: $(objpfx)%.h $(+force)
|
||
$(do-install)
|
||
$(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
|
||
$(do-install)
|
||
$(inst_includedir)/%.h: %.h $(+force)
|
||
$(do-install)
|
||
$(inst_includedir)/%.h: $(..)include/%.h $(+force)
|
||
$(do-install)
|
||
headers-nonh := $(filter-out %.h,$(headers))
|
||
ifdef headers-nonh
|
||
$(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
|
||
% $(+force)
|
||
$(do-install)
|
||
endif # headers-nonh
|
||
endif # headers
|
||
|
||
.PHONY: install-bin-nosubdir install-bin-script-nosubdir \
|
||
install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
|
||
install-data-nosubdir install-headers-nosubdir
|
||
install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
|
||
install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
|
||
install-rootsbin-nosubdir: \
|
||
$(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
|
||
install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
|
||
install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
|
||
$(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
|
||
$(addprefix $(libprefix),$(install-lib-non.a)))
|
||
install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
|
||
install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
|
||
install-others-nosubdir: $(install-others)
|
||
install-others-programs-nosubdir: $(install-others-programs)
|
||
|
||
# We need all the `-nosubdir' targets so that `install' in the parent
|
||
# doesn't depend on several things which each iterate over the subdirs.
|
||
# This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
|
||
# subroutine. Then in the parent `install-FOO' also causes subdir makes.
|
||
install-%:: install-%-nosubdir ;
|
||
|
||
.PHONY: install install-no-libc.a-nosubdir
|
||
install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
|
||
install-lib-nosubdir install-others-nosubdir
|
||
ifeq ($(build-programs),yes)
|
||
install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
|
||
install-rootsbin-nosubdir install-sbin-nosubdir \
|
||
install-others-programs-nosubdir
|
||
endif
|
||
install: install-no-libc.a-nosubdir
|
||
|
||
# Command to compile $< using the native libraries.
|
||
define native-compile
|
||
$(make-target-directory)
|
||
$(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
|
||
$< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
|
||
endef
|
||
|
||
# We always want to use configuration definitions.
|
||
ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
|
||
-DIS_IN_build -include $(common-objpfx)config.h
|
||
|
||
# Support the GNU standard name for this target.
|
||
.PHONY: check
|
||
check: tests
|
||
# Special target to run tests which cannot be run unconditionally.
|
||
# Maintainers should use this target.
|
||
.PHONY: xcheck
|
||
xcheck: xtests
|
||
|
||
all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
|
||
ifneq (,$(all-nonlib))
|
||
cpp-srcs-left = $(all-nonlib)
|
||
lib := nonlib
|
||
include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
|
||
endif
|
||
|
||
|
||
ifeq ($(build-shared),yes)
|
||
# Generate normalized lists of symbols, versions, and data sizes.
|
||
# This is handy for checking against existing library binaries.
|
||
|
||
%.symlist: $(..)scripts/abilist.awk %.dynsym
|
||
LC_ALL=C $(AWK) -f $^ > $@T
|
||
mv -f $@T $@
|
||
|
||
%.dynsym: %.so
|
||
LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
|
||
mv -f $@T $@
|
||
|
||
# A sysdeps/.../Makefile can set abilist-pattern to something like
|
||
# %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
|
||
# This makes sense if multiple ABIs can be most cleanly supported by a
|
||
# configuration without using separate sysdeps directories for each.
|
||
ifdef abilist-pattern
|
||
vpath $(abilist-pattern) $(+sysdep_dirs)
|
||
endif
|
||
|
||
vpath %.abilist $(+sysdep_dirs)
|
||
|
||
# The .PRECIOUS rule prevents the files built by an implicit rule whose
|
||
# target pattern is %.symlist from being considered "intermediate files"
|
||
# and automatically removed. We only want these files to be removed by
|
||
# 'make clean', which is handled by the 'generated' variable.
|
||
.PRECIOUS: %.symlist
|
||
generated += $(extra-libs:=.symlist)
|
||
|
||
ifdef abilist-pattern
|
||
$(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
|
||
$(objpfx)%.symlist
|
||
$(check-abi-pattern); \
|
||
$(evaluate-test)
|
||
$(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
|
||
$(common-objpfx)%.symlist
|
||
$(check-abi-pattern); \
|
||
$(evaluate-test)
|
||
endif
|
||
$(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
|
||
$(objpfx)%.symlist
|
||
$(check-abi); \
|
||
$(evaluate-test)
|
||
$(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
|
||
$(common-objpfx)%.symlist
|
||
$(check-abi); \
|
||
$(evaluate-test)
|
||
define check-abi-pattern
|
||
diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^) \
|
||
> $@
|
||
endef
|
||
define check-abi
|
||
diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
|
||
endef
|
||
|
||
ifdef abilist-pattern
|
||
update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
|
||
$(update-abi-pattern)
|
||
update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
|
||
$(update-abi-pattern)
|
||
endif
|
||
update-abi-%: $(objpfx)%.symlist %.abilist
|
||
$(update-abi)
|
||
update-abi-%: $(common-objpfx)%.symlist %.abilist
|
||
$(update-abi)
|
||
define update-abi-pattern
|
||
@if cmp -s $^ 2> /dev/null; \
|
||
then \
|
||
echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
|
||
else cp -f $^; \
|
||
echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
|
||
fi
|
||
endef
|
||
define update-abi
|
||
@if cmp -s $^ 2> /dev/null; \
|
||
then \
|
||
echo '+++ $(filter %.abilist,$^) is unchanged'; \
|
||
else cp -f $^; \
|
||
echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
|
||
fi
|
||
endef
|
||
|
||
.PHONY: update-abi check-abi
|
||
update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
|
||
check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
|
||
$(install-lib.so-versioned))
|
||
check-abi: $(check-abi-list)
|
||
ifdef subdir
|
||
subdir_check-abi: check-abi
|
||
subdir_update-abi: update-abi
|
||
else
|
||
check-abi: subdir_check-abi
|
||
if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
|
||
cat $(objpfx)*/check-abi*.out && exit 1; fi
|
||
update-abi: subdir_update-abi
|
||
endif
|
||
|
||
ifeq ($(subdir),elf)
|
||
check-abi: $(objpfx)check-abi-libc.out
|
||
tests-special += $(objpfx)check-abi-libc.out
|
||
update-abi: update-abi-libc
|
||
common-generated += libc.symlist
|
||
endif
|
||
|
||
ifeq ($(build-shared),yes)
|
||
ifdef subdir
|
||
tests-special += $(check-abi-list)
|
||
endif
|
||
endif
|
||
|
||
endif
|
||
|
||
# These will have been set by sysdeps/posix/Makefile.
|
||
L_tmpnam ?= 1
|
||
TMP_MAX ?= 0
|
||
L_ctermid ?= 1
|
||
L_cuserid ?= 1
|
||
|
||
stdio_lim = $(common-objpfx)bits/stdio_lim.h
|
||
|
||
$(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
|
||
$(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
|
||
$(common-objpfx)config.make
|
||
$(make-target-directory)
|
||
{ echo '#include "$(..)posix/bits/posix1_lim.h"'; \
|
||
echo '#define _LIBC 1'; \
|
||
echo '#include "$(..)misc/sys/uio.h"'; } | \
|
||
$(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' \
|
||
$(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
|
||
sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
|
||
$(@:st=dT) > $(@:st=dt)
|
||
mv -f $(@:st=dt) $(@:st=d)
|
||
fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; \
|
||
filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`; \
|
||
iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`; \
|
||
fopen_max=$${fopen_max:-16}; \
|
||
filename_max=$${filename_max:-1024}; \
|
||
if [ -z "$$iov_max" ]; then \
|
||
define_iov_max="# undef IOV_MAX"; \
|
||
else \
|
||
define_iov_max="# define IOV_MAX $$iov_max"; \
|
||
fi; \
|
||
sed -e "s/@FOPEN_MAX@/$$fopen_max/" \
|
||
-e "s/@FILENAME_MAX@/$$filename_max/" \
|
||
-e "s/@L_tmpnam@/$(L_tmpnam)/" \
|
||
-e "s/@TMP_MAX@/$(TMP_MAX)/" \
|
||
-e "s/@L_ctermid@/$(L_ctermid)/" \
|
||
-e "s/@L_cuserid@/$(L_cuserid)/" \
|
||
-e "s/@define_IOV_MAX@/$$define_iov_max/" \
|
||
$< > $(@:st=h.new)
|
||
$(move-if-change) $(@:st=h.new) $(@:st=h)
|
||
# Remove these last so that they can be examined if something went wrong.
|
||
rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
|
||
touch $@
|
||
# Get dependencies.
|
||
ifndef no_deps
|
||
-include $(stdio_lim:h=d)
|
||
endif
|
||
common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
|
||
|
||
FORCE:
|
||
|
||
.PHONY: echo-headers
|
||
echo-headers:
|
||
@echo $(headers)
|
||
|
||
%.bz2: %; bzip2 -9vk $<
|
||
%.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
|
||
%.xz: %; xz -9evk $<
|
||
|
||
# Common cleaning targets.
|
||
|
||
.PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
|
||
clean: common-clean
|
||
mostlyclean: common-mostlyclean
|
||
|
||
do-tests-clean:
|
||
-rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
|
||
$(test-srcs)) \
|
||
$(addsuffix .test-result,$(tests) \
|
||
$(xtests) \
|
||
$(test-srcs)))
|
||
|
||
# Remove the object files.
|
||
common-mostlyclean:
|
||
-rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
|
||
$(others) $(sysdep-others) stubs \
|
||
$(addsuffix .o,$(tests) $(xtests) \
|
||
$(test-srcs) $(others) \
|
||
$(sysdep-others)) \
|
||
$(addsuffix .out,$(tests) $(xtests) \
|
||
$(test-srcs)) \
|
||
$(addsuffix .test-result,$(tests) \
|
||
$(xtests) \
|
||
$(test-srcs)))
|
||
-rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
|
||
$(install-lib) $(install-lib.so) \
|
||
$(install-lib.so:%.so=%_pic.a))
|
||
-rm -f core
|
||
-rm -f $(objpfx)rtld-*.os
|
||
$(rmobjs)
|
||
define rmobjs
|
||
$(foreach o,$(object-suffixes-for-libc),
|
||
-rm -f $(objpfx)stamp$o $(o-objects))
|
||
endef
|
||
|
||
# Also remove the dependencies and generated source files.
|
||
common-clean: common-mostlyclean
|
||
-rm -f $(addprefix $(objpfx),$(generated))
|
||
-rm -f $(objpfx)*.d $(objpfx)*.dt
|
||
-rm -fr $(addprefix $(objpfx),$(generated-dirs))
|
||
-rm -f $(addprefix $(common-objpfx),$(common-generated))
|
||
-rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
|
||
|
||
# Produce a file `stubs' which contains `#define __stub_FUNCTION'
|
||
# for each function which is a stub.
|
||
|
||
ifdef objpfx
|
||
.PHONY: stubs # The parent Makefile calls this target.
|
||
stubs: $(objpfx)stubs
|
||
endif
|
||
objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
|
||
$(addprefix $(objpfx),$(extra-objs))
|
||
$(objpfx)stubs: $(objs-for-stubs)
|
||
ifneq (,$(strip $(objs-for-stubs)))
|
||
(cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
|
||
$(AWK) '/\.gnu\.glibc-stub\./ { \
|
||
sub(/\.gnu\.glibc-stub\./, "", $$2); \
|
||
stubs[$$2] = 1; } \
|
||
END { for (s in stubs) print "#define __stub_" s }' > $@T
|
||
mv -f $@T $@
|
||
else
|
||
> $@
|
||
endif
|
||
|
||
ifneq (,$(strip $(gpl2lgpl)))
|
||
ifneq (,$(wildcard $(..)gpl2lgpl.sed))
|
||
# Snarf from the master source and frob the copying notice.
|
||
$(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
|
||
sed -f $^ > $@-tmp
|
||
# So I don't edit them by mistake.
|
||
chmod a-w $@-tmp
|
||
mv -f $@-tmp $@
|
||
endif
|
||
endif
|
||
|
||
# Local Variables:
|
||
# mode: makefile
|
||
# End:
|