# Copyright (C) 1991-2018 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 # . # # 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 or 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 and # 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 $@ ifneq (,$(c++-bits-std_abs-h)) # Also make a copy of from GCC 7 to prevent it from # including /usr/include/stdlib.h. before-compile := $(common-objpfx)bits/std_abs.h $(before-compile) $(common-objpfx)bits/std_abs.h: $(c++-bits-std_abs-h) $(INSTALL_DATA) $< $@T $(move-if-change) $@T $@ endif 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. # Define GEN_AS_CONST_HEADERS to avoid circular dependency [BZ #22792]. # NB: is generated from tcb-offsets.sym to define # offsets and sizes of types in and maybe which # may include . Target header files can check if # GEN_AS_CONST_HEADERS is defined to avoid circular dependency which # may lead to build hang on a many-core machine. $(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) \ -DGEN_AS_CONST_HEADERS -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 '); \ $(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 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 $( $(@:.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_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 # sofini.os must be placed last since it terminates .eh_frame section. build-module-helper-objlist = \ $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\ $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \ $(elf-objpfx)sofini.os \ $(link-libc-deps),$^)) build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so) build-shlib-objlist = $(build-module-helper-objlist) \ $(LDLIBS-$(@F:lib%.so=%).so) \ $(filter $(elf-objpfx)sofini.os,$^) # 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 define make-link-multidir $(patsubst %/,cd %,$(objpfx)); \ $(addprefix $(abspath $(..)scripts/mkinstalldirs) ,$(dir $(multidir))); \ $(LN_S) . $(multidir) 2> /dev/null; \ test -L $(multidir) 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 define make-link-multidir $(make-target-directory) ln -f $(objpfx)/$(@F) $@ 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,%,$( $@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"'; \ } | \ $(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)`; \ fopen_max=$${fopen_max:-16}; \ filename_max=$${filename_max:-1024}; \ sed -e "s/@FOPEN_MAX@/$$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)/" \ $< > $(@: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: