diff options
Diffstat (limited to 'REORG.TODO/Makerules')
| -rw-r--r-- | REORG.TODO/Makerules | 1649 |
1 files changed, 1649 insertions, 0 deletions
diff --git a/REORG.TODO/Makerules b/REORG.TODO/Makerules new file mode 100644 index 0000000000..7656c492da --- /dev/null +++ b/REORG.TODO/Makerules @@ -0,0 +1,1649 @@ +# Copyright (C) 1991-2017 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 $@ + +# first-versions.h and ldbl-compat-choose.h provide macros used in +# various symbol versioning macro calls. +before-compile := $(common-objpfx)first-versions.h \ + $(common-objpfx)ldbl-compat-choose.h $(before-compile) +$(common-objpfx)first-versions.h: $(common-objpfx)versions.stmp +$(common-objpfx)ldbl-compat-choose.h: $(common-objpfx)versions.stmp +endif # avoid-generated +endif # $(build-shared) = yes + +ifndef avoid-generated +ifneq (,$(CXX)) +# If C++ headers <cstdlib> or <cmath> are used, GCC 6 will include +# /usr/include/stdlib.h or /usr/include/math.h from "#include_next" +# (instead of stdlib/stdlib.h or math/math.h in the glibc source +# directory), and this turns up as a make dependency. An implicit +# rule will kick in and make will try to install stdlib/stdlib.h or +# math/math.h as /usr/include/stdlib.h or /usr/include/math.h because +# the target is out of date. We make a copy of <cstdlib> and <cmath> +# in the glibc build directory so that stdlib/stdlib.h and math/math.h +# will be used instead of /usr/include/stdlib.h and /usr/include/math.h. +before-compile := $(common-objpfx)cstdlib $(common-objpfx)cmath \ + $(before-compile) +$(common-objpfx)cstdlib: $(c++-cstdlib-header) + $(INSTALL_DATA) $< $@T + $(move-if-change) $@T $@ +$(common-objpfx)cmath: $(c++-cmath-header) + $(INSTALL_DATA) $< $@T + $(move-if-change) $@T $@ +endif + +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-py-const-headers +# We'll use a static pattern rule to match .pysym files with their +# corresponding generated .py files. +# The generated .py files go in the submodule's dir in the glibc build dir. +py-const-files := $(patsubst %.pysym,%.py,$(gen-py-const-headers)) +py-const-dir := $(objpfx) +py-const := $(addprefix $(py-const-dir),$(py-const-files)) +py-const-script := $(..)scripts/gen-py-const.awk + +# This is a hack we use to generate .py files with constants for Python +# pretty printers. It works the same way as gen-as-const. +# See scripts/gen-py-const.awk for details on how the awk | gcc mechanism +# works. +# +# $@.tmp and $@.tmp2 are temporary files we use to store the partial contents +# of the target file. We do this instead of just writing on $@ because, if the +# build process terminates prematurely, re-running Make wouldn't run this rule +# since Make would see that the target file already exists (despite it being +# incomplete). +# +# The sed line replaces "@name@SOME_NAME@value@SOME_VALUE@" strings from the +# output of 'gcc -S' with "SOME_NAME = SOME_VALUE" strings. +# The '-n' option, combined with the '/p' command, makes sed output only the +# modified lines instead of the whole input file. The output is redirected +# to a .py file; we'll import it in the pretty printers file to read +# the constants generated by gen-py-const.awk. +# The regex has two capturing groups, for SOME_NAME and SOME_VALUE +# respectively. Notice SOME_VALUE may be prepended by a special character, +# depending on the assembly syntax (e.g. immediates are prefixed by a '$' +# in AT&T x86, and by a '#' in ARM). We discard it using a complemented set +# before the second capturing group. +$(py-const): $(py-const-dir)%.py: %.pysym $(py-const-script) \ + $(common-before-compile) + $(make-target-directory) + $(AWK) -f $(py-const-script) $< \ + | $(CC) -S -o $@.tmp $(CFLAGS) $(CPPFLAGS) -x c - + echo '# GENERATED FILE\n' > $@.tmp2 + echo '# Constant definitions for pretty printers.' >> $@.tmp2 + echo '# See gen-py-const.awk for details.\n' >> $@.tmp2 + sed -n -r 's/^.*@name@([^@]+)@value@[^[:xdigit:]Xx-]*([[:xdigit:]Xx-]+)@.*/\1 = \2/p' \ + $@.tmp >> $@.tmp2 + mv -f $@.tmp2 $@ + rm -f $@.tmp + +generated += $(py-const) +endif # gen-py-const-headers + +ifdef gen-as-const-headers +# Generating headers for assembly constants. +# We need this defined early to get into before-compile before +# it's used in sysd-rules, below. +$(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@@@.*$$/#define \1 \2/p' \ + $(@:.h.d=.h)T3 > $(@:.h.d=.h)T + rm -f $(@:.h.d=.h)T3 + sed $(sed-remove-objpfx) $(sed-remove-dotdot) \ + $(@:.h=.h.d)T > $(@:.h=.h.d)T2 + rm -f $(@:.h=.h.d)T + mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d) + mv -f $(@:.h.d=.h)T $(@:.h.d=.h) +vpath %.sym $(sysdirs) +before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h) + +tests-internal += $(gen-as-const-headers:%.sym=test-as-const-%) +generated += $(gen-as-const-headers:%.sym=test-as-const-%.c) +$(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \ + %.sym $(common-objpfx)%.h + ($(AWK) '{ sub(/^/, "asconst_", $$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.stmp +$(common-objpfx)versions.stmp: $(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,$^); \ + ) > $(common-objpfx)sysd-versionsT + mv -f $(common-objpfx)sysd-versionsT $(common-objpfx)sysd-versions + touch $@ +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) + +# 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-lib.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 = .);\ + PROVIDE(__start___libc_IO_vtables = .);\ + __libc_IO_vtables : { *(__libc_IO_vtables) }\ + PROVIDE(__stop___libc_IO_vtables = .);\ + /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 += $(libc.so-gnulib) +# Give libc.so an entry point and make it directly runnable itself. +LDFLAGS-c.so += -e __libc_main +# Pre-link the objects of libc_pic.a so that we can locally resolve +# COMMON symbols before we link against ld.so. This is because ld.so +# contains some of libc_pic.a already, which will prevent the COMMONs +# from being allocated in libc.so, which introduces evil dependencies +# between libc.so and ld.so, which can make it impossible to upgrade. +$(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). +# MODULE_NAME=extramodules, except any in $(modules-names-tests). +ifdef modules-names +cpp-srcs-left := $(filter-out $(modules-names-tests),$(modules-names)) +ifneq (,$(cpp-srcs-left)) +lib := extramodules +include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left)) +endif + +ifdef modules-names-tests +cpp-srcs-left := $(filter $(modules-names-tests),$(modules-names)) +ifneq (,$(cpp-srcs-left)) +lib := testsuite +include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left)) +endif +endif + +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) $(tests-internal) $(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) $(LDFLAGS-lib.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.a := $(filter-out $(install-lib-ldscripts),$(install-lib.a)) +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 + +# The only difference between MODULE_NAME=testsuite and MODULE_NAME=nonlib is +# that almost all internal declarations from config.h, libc-symbols.h, and +# include/*.h are not available to 'testsuite' code, but are to 'nonlib' code. +all-testsuite := $(strip $(tests) $(xtests) $(test-srcs) $(test-extras)) +ifneq (,$(all-testsuite)) +cpp-srcs-left = $(all-testsuite) +lib := testsuite +include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left)) +endif + +all-nonlib := $(strip $(tests-internal) $(test-internal-extras) $(others)) +ifneq (,$(all-nonlib)) +cpp-srcs-left = $(all-nonlib) +lib := nonlib +include $(patsubst %,$(..)libof-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) \ + $(tests-internal) \ + $(xtests) \ + $(test-srcs)) \ + $(addsuffix .test-result,$(tests) \ + $(tests-internal) \ + $(xtests) \ + $(test-srcs))) + +# Remove the object files. +common-mostlyclean: + -rm -f $(addprefix $(objpfx),$(tests) $(tests-internal) $(xtests) \ + $(test-srcs) \ + $(others) $(sysdep-others) stubs \ + $(addsuffix .o,$(tests) \ + $(tests-internal) \ + $(xtests) \ + $(test-srcs) \ + $(others) \ + $(sysdep-others)) \ + $(addsuffix .out,$(tests) \ + $(tests-internal) \ + $(xtests) \ + $(test-srcs)) \ + $(addsuffix .test-result,$(tests) \ + $(tests-internal) \ + $(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: |