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# Copyright (C) 1991-2016 Free Software Foundation, Inc. | |
# This file is part of the GNU C Library. | |
# The GNU C Library is free software; you can redistribute it and/or | |
# modify it under the terms of the GNU Lesser General Public | |
# License as published by the Free Software Foundation; either | |
# version 2.1 of the License, or (at your option) any later version. | |
# The GNU C Library is distributed in the hope that it will be useful, | |
# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
# Lesser General Public License for more details. | |
# You should have received a copy of the GNU Lesser General Public | |
# License along with the GNU C Library; if not, see | |
# <http://www.gnu.org/licenses/>. | |
# | |
# Common rules for making the GNU C library. This file is included | |
# by the top-level Makefile and by all subdirectory makefiles | |
# (through Rules). | |
# | |
ifneq (,) | |
This makefile requires GNU Make. | |
endif | |
REQUIRED_MAKE_VERSION = 3.74 | |
REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION)) | |
ifneq ($(REQUIRED_MAKE_VERSION), \ | |
$(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION)))) | |
Wrong GNU Make version. See above for the version needed. | |
endif | |
ifdef subdir | |
.. := ../ | |
endif # subdir | |
# If `sources' was defined by the parent makefile, undefine it so | |
# we will later get it from wildcard search in this directory. | |
ifneq "$(findstring env,$(origin sources))" "" | |
sources := | |
endif | |
oPATH := $(PATH) | |
PATH := this definition should take precedence over $(oPATH) | |
ifeq ($(PATH),$(oPATH)) | |
You must not use the -e flag when building the GNU C library. | |
else | |
PATH := $(oPATH) | |
endif | |
ifndef +included-Makeconfig | |
include $(..)Makeconfig | |
endif | |
# This variable is used in ``include $(o-iterator)'' after defining | |
# $(o-iterator-doit) to produce some desired rule using $o for the object | |
# suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy | |
# is produced for each object suffix in use. | |
o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left)) | |
# Include any system-specific makefiles. | |
# This is here so things in sysdep Makefiles can easily depend on foo.h as | |
# appropriate and not worry about where foo.h comes from, which may be | |
# system dependent and not known by that Makefile. | |
vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \ | |
$(+sysdep_dirs) $(..))) | |
# The same is true for RPC source files. | |
vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \ | |
$(+sysdep_dirs) $(..))) | |
# Some sysdep makefiles use this to distinguish being included here from | |
# being included individually by a subdir makefile (hurd/Makefile needs this). | |
in-Makerules := yes | |
sysdep-makefiles := $(wildcard $(sysdirs:=/Makefile)) | |
ifneq (,$(sysdep-makefiles)) | |
include $(sysdep-makefiles) | |
endif | |
# Reorder before-compile so that mach things come first, and hurd things | |
# second, before all else. The mach and hurd subdirectories have many | |
# generated header files which the much of rest of the library depends on, | |
# so it is best to build them first (and mach before hurd, at that). | |
before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\ | |
$(before-compile)) \ | |
$(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\ | |
$(before-compile)) | |
# Even before that, we need abi-versions.h which is generated right here. | |
ifeq ($(build-shared),yes) | |
ifndef avoid-generated | |
before-compile := $(common-objpfx)abi-versions.h $(before-compile) | |
$(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \ | |
$(common-objpfx)Versions.all | |
LC_ALL=C $(AWK) -f $^ > $@T | |
mv -f $@T $@ | |
$(common-objpfx)%.latest: $(common-objpfx)abi-versions.h | |
sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \ | |
$(common-objpfx)abi-versions.h > $@T | |
mv -f $@T $@ | |
endif # avoid-generated | |
endif # $(build-shared) = yes | |
ifndef avoid-generated | |
before-compile := $(common-objpfx)libc-abis.h $(before-compile) | |
$(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @: | |
$(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \ | |
$(firstword $(wildcard $(sysdirs:=/libc-abis)) \ | |
$(..)libc-abis) \ | |
$(..)Makerules | |
$(SHELL) $< \ | |
$(base-machine)-$(config-vendor)-$(config-os) \ | |
< $(word 2,$^) > $(@:.stamp=.h)T | |
$(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h) | |
touch $@ | |
common-generated += $(common-objpfx)libc-abis.h | |
endif # avoid-generated | |
ifeq (yes,$(build-shared)) | |
$(common-objpfx)runtime-linker.h: $(common-objpfx)runtime-linker.stamp; @: | |
$(common-objpfx)runtime-linker.stamp: $(common-objpfx)config.make | |
$(make-target-directory) | |
echo '#define RUNTIME_LINKER "$(rtlddir)/$(rtld-installed-name)"' \ | |
> ${@:stamp=T} | |
$(move-if-change) ${@:stamp=T} ${@:stamp=h} | |
touch $@ | |
endif | |
# Make sure the subdirectory for object files gets created. | |
ifdef objpfx | |
ifeq (,$(wildcard $(objpfx).)) | |
before-compile += $(objpfx). | |
$(objpfx).: | |
$(make-target-directory) | |
endif | |
endif | |
# Remove existing files from `before-compile'. Things are added there when | |
# they must exist for dependency generation to work right, but once they | |
# exist there is no further need for every single file to depend on them, | |
# and those gratuitous dependencies result in many gratuitous | |
# recompilations. | |
before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile)) | |
# Don't let any before-compile file be an intermediate and get removed. | |
ifdef before-compile | |
$(before-compile): | |
endif | |
# We don't want $(common-objpfx) files to depend on miscellaneous stuff | |
# in subdirs. | |
ifdef subdir | |
common-before-compile := $(filter-out $(objpfx)%,$(before-compile)) | |
else | |
common-before-compile = $(before-compile) | |
endif | |
ifndef subdir | |
# If a makefile needs to do something conditional on something that | |
# can only be figured out from headers, write a FOO.make.c input | |
# file that uses cpp contructs and contains @@@ LINE @@@ for each LINE | |
# to emit in the generated makefile, and use -include $(common-objpfx)FOO.make. | |
# | |
# We only generate these in the top-level makefile, to avoid any weirdness | |
# from subdir-specific makefile tweaks creeping in on an update. | |
$(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile) | |
rm -f $@T $@.dT | |
(echo '# Generated from $*.make.c by Makerules.'; \ | |
$(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \ | |
-MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \ | |
| sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \ | |
echo 'common-generated += $(@F)'; \ | |
sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \ | |
rm -f $@.dT) > $@T | |
mv -f $@T $@ | |
endif | |
ifdef subdir | |
sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g' \ | |
-e 's@^\.\.\/\([^ \]*\)@$$(..)\1@g' | |
else | |
sed-remove-dotdot := -e 's@ *\([^ \/$$][^ \]*\)@ $$(..)\1@g' \ | |
-e 's@^\([^ \/$$][^ \]*\)@$$(..)\1@g' | |
endif | |
ifdef gen-as-const-headers | |
# Generating headers for assembly constants. | |
# We need this defined early to get into before-compile before | |
# it's used in sysd-rules, below. | |
$(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \ | |
%.sym $(common-before-compile) | |
$(AWK) -f $< $(filter %.sym,$^) \ | |
| $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \ | |
-MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)' | |
sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \ | |
$(@:.h.d=.h)T3 > $(@:.h.d=.h)T | |
rm -f $(@:.h.d=.h)T3 | |
sed $(sed-remove-objpfx) $(sed-remove-dotdot) \ | |
$(@:.h=.h.d)T > $(@:.h=.h.d)T2 | |
rm -f $(@:.h=.h.d)T | |
mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d) | |
mv -f $(@:.h.d=.h)T $(@:.h.d=.h) | |
vpath %.sym $(sysdirs) | |
before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h) | |
tests += $(gen-as-const-headers:%.sym=test-as-const-%) | |
generated += $(gen-as-const-headers:%.sym=test-as-const-%.c) | |
$(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \ | |
%.sym $(common-objpfx)%.h | |
($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \ | |
$(AWK) -v test=1 -f $< $(filter %.sym,$^); \ | |
echo '#include "$(..)test-skeleton.c"') > $@T | |
mv -f $@T $@ | |
endif | |
ifeq (yes,$(build-shared)) | |
# Generate the header containing the names of all shared libraries. | |
# We use a stamp file to avoid unnecessary recompilations. | |
before-compile += $(common-objpfx)gnu/lib-names.h | |
ifeq ($(soversions.mk-done),t) | |
ifndef abi-variants | |
lib-names-h-abi = gnu/lib-names.h | |
lib-names-stmp-abi = gnu/lib-names.stmp | |
else | |
lib-names-h-abi = gnu/lib-names-$(default-abi).h | |
lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp | |
before-compile += $(common-objpfx)$(lib-names-h-abi) | |
common-generated += gnu/lib-names.h | |
install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi) | |
$(common-objpfx)gnu/lib-names.h: | |
$(make-target-directory) | |
{ \ | |
echo '/* This file is automatically generated.';\ | |
echo ' It defines macros to allow user program to find the shared'; \ | |
echo ' library files which come as part of GNU libc. */'; \ | |
echo '#ifndef __GNU_LIB_NAMES_H'; \ | |
echo '#define __GNU_LIB_NAMES_H 1'; \ | |
echo ''; \ | |
$(if $(abi-includes), \ | |
$(foreach h,$(abi-includes), echo '#include <$(h)>';) \ | |
echo '';) \ | |
$(foreach v,$(abi-variants),\ | |
$(if $(abi-$(v)-condition),\ | |
echo '#if $(abi-$(v)-condition)'; \ | |
echo '# include <gnu/lib-names-$(v).h>'); \ | |
$(if $(abi-$(v)-condition),echo '#endif';)) \ | |
echo ''; \ | |
echo '#endif /* gnu/lib-names.h */'; \ | |
} > $@ | |
endif | |
$(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @: | |
$(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \ | |
$(common-objpfx)soversions.i | |
$(make-target-directory) | |
{ \ | |
$(if $(abi-variants), \ | |
echo '/* This file is automatically generated. */';\ | |
echo '#ifndef __GNU_LIB_NAMES_H'; \ | |
echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \ | |
echo '#endif';, \ | |
echo '/* This file is automatically generated.';\ | |
echo ' It defines macros to allow user program to find the shared'; \ | |
echo ' library files which come as part of GNU libc. */'; \ | |
echo '#ifndef __GNU_LIB_NAMES_H'; \ | |
echo '#define __GNU_LIB_NAMES_H 1';) \ | |
echo ''; \ | |
($(foreach s,$(all-sonames), echo $(s);)) \ | |
| LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \ | |
$(if $(abi-variants),, \ | |
echo ''; \ | |
echo '#endif /* gnu/lib-names.h */';) \ | |
} > ${@:stmp=T} | |
$(move-if-change) ${@:stmp=T} ${@:stmp=h} | |
touch $@ | |
endif | |
common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi) | |
endif | |
############################################################################### | |
# NOTE! Everything adding to before-compile needs to come before this point! # | |
############################################################################### | |
# Generate an ordered list of implicit rules which find the source files in | |
# each sysdep directory. The old method was to use vpath to search all the | |
# sysdep directories. However, that had the problem that a .S file in a | |
# later directory would be chosen over a .c file in an earlier directory, | |
# which does not preserve the desired sysdeps ordering behavior. | |
# System-dependent makefiles can put in `inhibit-sysdep-asm' regexps | |
# matching sysdep directories whose assembly source files should be | |
# suppressed. | |
-include $(common-objpfx)sysd-rules | |
ifneq ($(sysd-rules-sysdirs),$(config-sysdirs)) | |
# The value of $(+sysdep_dirs) the sysd-rules was computed for | |
# differs from the one we are using now. So force a rebuild of sysd-rules. | |
sysd-rules-force = FORCE | |
FORCE: | |
endif | |
$(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \ | |
$(common-objpfx)config.make $(..)Makerules \ | |
$(sysdep-makefiles) $(sysdep-makeconfigs) \ | |
$(sysd-rules-force) | |
-@rm -f $@T | |
LC_ALL=C $(AWK) -f $< > $@T \ | |
-v all_object_suffixes='$(all-object-suffixes)' \ | |
-v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \ | |
-v sysd_rules_patterns='$(sysd-rules-patterns)' \ | |
-v config_sysdirs='$(config-sysdirs)' | |
mv -f $@T $@ | |
ifndef sysd-rules-done | |
# Don't do deps until this exists, because it provides rules to make the deps. | |
no_deps=t | |
endif | |
define o-iterator-doit | |
$(objpfx)%$o: %.S $(before-compile); $$(compile-command.S) | |
endef | |
object-suffixes-left := $(all-object-suffixes) | |
include $(o-iterator) | |
define o-iterator-doit | |
$(objpfx)%$o: %.c $(before-compile); $$(compile-command.c) | |
endef | |
object-suffixes-left := $(all-object-suffixes) | |
include $(o-iterator) | |
define o-iterator-doit | |
$(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc) | |
endef | |
object-suffixes-left := $(all-object-suffixes) | |
include $(o-iterator) | |
# Omit the objpfx rules when building in the source tree, because | |
# objpfx is empty and so these rules just override the ones above. | |
ifdef objpfx | |
# Define first rules to find the source files in $(objpfx). | |
# Generated source files will end up there. | |
define o-iterator-doit | |
$(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S) | |
endef | |
object-suffixes-left := $(all-object-suffixes) | |
include $(o-iterator) | |
define o-iterator-doit | |
$(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c) | |
endef | |
object-suffixes-left := $(all-object-suffixes) | |
include $(o-iterator) | |
endif | |
# Generate version maps, but wait until sysdep-subdirs is known | |
ifeq ($(sysd-sorted-done),t) | |
ifeq ($(build-shared),yes) | |
-include $(common-objpfx)sysd-versions | |
$(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions | |
common-generated += $(version-maps) | |
postclean-generated += sysd-versions Versions.all abi-versions.h \ | |
Versions.def Versions.v.i Versions.v | |
ifndef avoid-generated | |
ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs)) | |
sysd-versions-force = FORCE | |
FORCE: | |
endif | |
$(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \ | |
$(common-objpfx)Versions.v | |
LC_ALL=C $(AWK) -f $^ > $@T | |
mv -f $@T $@ | |
$(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \ | |
$(common-objpfx)soversions.i \ | |
$(common-objpfx)Versions.def | |
{ while read which lib version setname; do \ | |
test x"$$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=$< \ | |
-v move_if_change='$(move-if-change)' \ | |
-f $(word 3,$^); \ | |
) > $@T | |
mv -f $@T $@ | |
endif # avoid-generated | |
endif # $(build-shared) = yes | |
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))) | |
.PHONY: check-install-supported | |
check-install-supported: | |
# Check to see if the prefix or exec_prefix GNU standard variable | |
# has been overridden on the command line and, if so, fail with | |
# an error message since doing so is not supported (set DESTDIR | |
# instead). | |
ifeq ($(origin prefix),command line) | |
check-install-supported: | |
$(error Overriding prefix is not supported. Set DESTDIR instead.) | |
endif | |
ifeq ($(origin exec_prefix),command line) | |
check-install-supported: | |
$(error Overriding exec_prefix is not supported. Set DESTDIR instead.) | |
endif | |
install: check-install-supported | |
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 | |
# Patch all .abilist files for one DSO. The find command locates | |
# abilist files for all architectures. The regular expression in the | |
# find invocation is needed to separate libc.abilist and | |
# libcrypt.abilist, for example. It assumes that abilist-pattern, if | |
# set, is of the form "%-SUFFIX", and not "%SUFFIX", that is, there is | |
# a non-alphanumeric seperator between the pattern and the suffix | |
# added. The abilist files in /generic/ are filtered out because | |
# these are expected to remain empty. | |
define update-all-abi | |
$(SHELL) $(..)scripts/update-abilist.sh $^ \ | |
$$(find $(..)sysdeps \ | |
-regextype posix-egrep -regex '.*/$*([^a-z0-9].*)?\.abilist$$' \ | |
\! -regex '.*/generic/.*') | |
endef | |
ifdef abilist-pattern | |
update-all-abi-%: $(abilist-pattern) $(objpfx)%.symlist | |
$(update-all-abi) | |
update-all-abi-%: $(abilist-pattern) $(common-objpfx)%.symlist | |
$(update-all-abi) | |
endif | |
update-all-abi-%: %.abilist $(objpfx)%.symlist | |
$(update-all-abi) | |
update-all-abi-%: %.abilist $(common-objpfx)%.symlist | |
$(update-all-abi) | |
.PHONY: update-abi update-all-abi check-abi | |
update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned)) | |
update-all-abi: $(patsubst %.so,update-all-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 | |
subdir_update-all-abi: update-all-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 | |
update-all-abi: subdir_update-all-abi | |
endif | |
ifeq ($(subdir),elf) | |
check-abi: $(objpfx)check-abi-libc.out | |
tests-special += $(objpfx)check-abi-libc.out | |
update-abi: update-abi-libc | |
update-all-abi: update-all-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: |