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glibc/Makerules
Ulrich Drepper 994431ed53 Update. 
* Makerules [AIX] (build-shlib-helper): Precede linker options
	with -Wl.

	* Makeconfig (config-LDFLAGS): Add ld.so only for ELF.
2001-07-08 15:07:16 +00:00

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# Copyright (C) 1991-1999, 2000,2001 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, write to the Free
# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA.
#
# 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
# `configure' writes a definition of `config-sysdirs' in `config.make'.
sysdirs = $(strip $(full_config_sysdirs))
+sysdir_pfx = $(common-objpfx)
export sysdirs := $(sysdirs)
+sysdep_dirs := $(full_config_sysdirs)
ifdef objdir
+sysdep_dirs := $(objdir) $(+sysdep_dirs)
endif
# Add -I switches to get the right sysdep directories.
# `+includes' in Makeconfig references $(+sysdep-includes).
+sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
# 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 $(full_config_sysdirs:=/Makefile))
ifneq (,$(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%,\
$(before-compile))
# Even before that, we need abi-versions.h which is generated right here.
ifeq ($(versioning),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 $(AWK) -v oldest_abi=$(oldest-abi) -f $^ > $@T
mv -f $@T $@
$(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
$(common-objpfx)abi-versions.h > $@T
mv -f $@T $@
endif # avoid-generated
endif # $(versioning) = yes
# 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
# 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.
# When making the list of .d files to include, we can't know which ones
# have source in .s files, and thus do not in fact need a .d file.
# So we must define rules to make .d files for .s files.
define make-dummy-dep
$(addprefix ln $(common-objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
endef
$(common-objpfx)dummy.d:
echo '# .s files cannot contain includes, so they need no deps.' > $@
# It matters that this set of rules, for compiling from sources in
# the current directory (the $srcdir/$subdir) come before the
# generated sysdep rules in included from sysd-rules below. When
# compiling in the source tree, generated sources go into the current
# directory, and those should be chosen before any sources in sysdeps.
define o-iterator-doit
$(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
$(objpfx)%.d: %.S $(before-compile); $(+make-deps)
define o-iterator-doit
$(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
$(objpfx)%.d: %.s $(common-objpfx)dummy.d; $(make-dummy-dep)
define o-iterator-doit
$(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
$(objpfx)%.d: %.c $(before-compile); $(+make-deps)
# Omit the objpfx rules when building in the source tree, because
# objpfx is empty and so these rules just override the ones above.
ifdef objpfx
# Define first rules to find the source files in $(objpfx).
# Generated source files will end up there.
define o-iterator-doit
$(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
$(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
define o-iterator-doit
$(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
$(objpfx)%.d: $(objpfx)%.s $(common-objpfx)dummy.d; $(make-dummy-dep)
define o-iterator-doit
$(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
$(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
endif
# System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
# patterns matching sysdep directories whose assembly source files should
# be suppressed.
ifdef inhibit-sysdep-asm
define open-check-inhibit-asm
case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
endef
close-check-inhibit-asm = ;; esac ;
endif
-include $(+sysdir_pfx)sysd-rules
ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
# The value of $(+sysdep_dirs) the sysd-rules was computed for
# differs from the one we are using now. So force a rebuild of sysd-rules.
sysd-rules-force = FORCE
FORCE:
endif
$(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
$(wildcard $(foreach dir,$(sysdirs),\
$(dir)/Makefile))\
$(sysd-rules-force)
-@rm -f $@T
(echo 'sysd-rules-sysdirs := $(config-sysdirs)'; \
for dir in $(config-sysdirs:%='$$(..)%'); do \
for o in $(all-object-suffixes); do \
$(open-check-inhibit-asm) \
echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
\$$(compile-command.S)"; \
echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
\$$(compile-command.s)"; \
$(close-check-inhibit-asm) \
echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
\$$(compile-command.c)"; \
done; \
$(open-check-inhibit-asm) \
echo "\$$(objpfx)%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
\$$(make-dummy-dep)"; \
echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
\$$(+make-deps)"; \
$(close-check-inhibit-asm) \
echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
\$$(+make-deps)"; \
done; \
echo 'sysd-rules-done = t') > $@T
mv -f $@T $@
ifndef sysd-rules-done
# Don't do deps until this exists, because it provides rules to make the deps.
no_deps=t
endif
# Generate version maps, but wait until sysdep-subdirs is known
ifeq ($(sysd-sorted-done),t)
ifeq ($(versioning),yes)
-include $(common-objpfx)sysd-versions
$(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
common-generated += $(version-maps)
postclean-generated += sysd-versions Versions.all abi-versions.h
ifndef avoid-generated
ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
sysd-versions-force = FORCE
FORCE:
endif
$(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
$(common-objpfx)soversions.i \
$(..)Versions.def \
$(wildcard $(add-ons:%=$(..)%/Versions.def))
{ while read lib version setname; do \
test -z "$$setname" || echo "$$lib : $$setname"; \
done < $(word 2,$^); \
cat $(filter-out $< $(word 2,$^),$^) \
| $(preprocess-versions); \
} | LC_ALL=C $(AWK) -f $< > $@T
mv -f $@T $@
$(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
$(..)scripts/versions.awk \
$(wildcard $(all-subdirs:%=$(..)%/Versions)) \
$(wildcard $(sysdirs:%=%/Versions)) \
$(sysd-versions-force)
( echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
cat $(filter-out $< $(word 2,$^) $(sysd-versions-force),$^) \
| $(preprocess-versions) \
| LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
-v move_if_change='$(move-if-change)' \
-f $(word 2,$^); \
) > $@T
mv -f $@T $@
endif # avoid-generated
endif # $(versioning) = yes
endif # sysd-sorted-done
ifndef compile-command.S
compile-command.S = $(compile.S) $(OUTPUT_OPTION)
endif
ifndef compile-command.s
compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
endif
ifndef compile-command.c
compile-command.c = $(compile.c) $(OUTPUT_OPTION)
endif
# GCC can grok options after the file name, and it looks nicer that way.
compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
compile.S = \
$(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
COMPILE.S = \
$(CC) -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
# If we want to generate MD% checksums for the sources do this now.
ifeq ($(md5),yes)
generate-md5 = ; rm -f $(@:.d=.md5); \
$(CC) -E $< $(CFLAGS) $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
sed '/^\#/d;/^[[:space:]]*$$/d' | md5sum > $(@:.d=.md5)
else
generate-md5 =
endif
# We need this for the output to go in the right place. It will default to
# empty if make was configured to work with a cc that can't grok -c and -o
# together. You can't compile the C library with such a compiler.
OUTPUT_OPTION = -o $@
S-CPPFLAGS = $(asm-CPPFLAGS)
define +make-deps
$(make-target-directory)
-@rm -f $@
$(+mkdep) $< $(CFLAGS) $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
sed \
-e 's,$(subst .,\.,$*)\.o,$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
$(sed-remove-objpfx) > $(@:.d=.T)
mv -f $(@:.d=.T) $@ $(generate-md5)
endef
ifneq (,$(objpfx))
# Continuation lines here are dangerous because they introduce spaces!
define sed-remove-objpfx
-e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(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 (yesyes,$(build-shared)$(elf))
ifndef libc.so-version
# Undefine this because it can't work when we libc.so is unversioned.
static-only-routines =
endif
endif
# Bounded pointer thunks are only built for *.ob
elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
elide-routines.oS += $(filter-out $(static-only-routines),\
$(routines) $(aux) $(sysdep_routines)) \
$(elide-bp-thunks)
elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
# 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-bp-thunks)
elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
elide-routines.ob += $(shared-only-routines)
# Shared library building.
ifeq (yes,$(build-shared))
# Reference map file only when versioning is selected and a map file name
# is given.
ifeq ($(versioning),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
# 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.
lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
ifneq (,$(findstring aix,$(config-os)))
(echo '#!'; \
dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
endif
$(build-shlib)
ifeq ($(elf),yes)
define build-shlib-helper
$(LINK.o) -shared -Wl,-O1 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
$(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
$(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
-Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
$(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
endef
else
ifneq (,$(findstring aix,$(config-os)))
define build-shlib-helper
$(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
$(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
$(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
-L$(subst :, -L,$(rpath-link))
endef
else
endif
endif
ifeq (yes,$(elf))
# binutils only position loadable notes into the first page for binaries,
# not for shared objects
define build-shlib
$(build-shlib-helper) \
-o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
$(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
sed -e '/^=========/,/^=========/!d;/^=========/d' \
-e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
> $@.lds
rm -f $@.new
$(build-shlib-helper) -o $@ -T $@.lds \
$(csu-objpfx)abi-note.o $(build-shlib-objlist)
rm -f $@.lds
endef
else
ifneq (,$(findstring aix,$(config-os)))
define build-shlib
$(build-shlib-helper) \
-o $@ \
$(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
$(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
endef
define build-shlib
$(build-shlib-helper) \
$(build-shlib-objlist)
endef
endif
endif
ifneq (,$(findstring aix,$(config-os)))
define build-module-helper
$(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
$(sysdep-LDFLAGS) $(config-LDFLAGS) \
$(load-map-file) \
$(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
-L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
endef
else
define build-module-helper
$(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) \
-B$(csu-objpfx) $(load-map-file) \
$(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
-L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
endef
endif
# This macro is similar to build-shlib but it does not define a soname
# and it does not depend on the destination name to start with `lib'.
ifeq (yes,$(elf))
# binutils only position loadable notes into the first page for binaries,
# not for shared objects
define build-module
$(build-module-helper) \
-o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
$(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
sed -e '/^=========/,/^=========/!d;/^=========/d' \
-e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
> $@.lds
rm -f $@.new
$(build-module-helper) -o $@ -T $@.lds \
$(csu-objpfx)abi-note.o $(build-module-objlist)
rm -f $@.lds
endef
else
ifneq (,$(findstring aix,$(config-os)))
define build-module
$(build-module-helper) \
-o $@ \
$(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
$(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
endef
else
define build-module
define build-module
$(build-module-helper) \
-o $@ \
$(build-module-objlist)
endef
endif
endif
build-module-helper-objlist = \
$(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
$(filter-out $(map-file) $(+preinit) $(+postinit),$^))
whole-archive := -Wl,--whole-archive
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 $(gnulib).
LDLIBS-c.so += $(gnulib)
# Give libc.so an entry point and make it directly runnable itself.
LDFLAGS-c.so += -e __libc_main
# Force the backward compatibility EH functions to be linked.
LDFLAGS-c.so += -u __register_frame
# 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.
ifeq ($(elf),yes)
$(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
$(LINK.o) -nostdlib -nostartfiles -r -o $@ \
$(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
# Use our own special initializer and finalizer files for libc.so.
$(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
$(common-objpfx)libc_pic.os \
$(elfobjdir)/sofini.os \
$(elfobjdir)/interp.os $(elfobjdir)/ld.so
$(build-shlib)
ifeq ($(versioning),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
else
ifneq (,$(findstring aix,$(config-os)))
$(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
@rm -f $@
(echo '#!'; \
dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
/lib/syscalls.exp > $(common-objpfx)syscalls.exp
$(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
-bE:$(common-objpfx)syscalls.exp \
-bI:$(common-objpfx)syscalls.exp \
-L$(common-objpfx) -o $@ $^
# AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
cp $@ $(common-objpfx)shr.o
$(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
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".
# We also add bounded-pointer thunks, which are later
# elided for all suffixes except for `.ob'.
override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
$(patsubst %,$(bppfx)%.o,\
$(filter $(routines) $(sysdep_routines),$(bp-thunks))))
# 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
+depfiles := $(sources:.c=.d) \
$(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
$(addsuffix .d,$(tests) $(test-srcs))
ifeq ($(build-programs),yes)
+depfiles += $(addsuffix .d,$(others) $(sysdep-others))
endif
+depfiles := $(addprefix $(objpfx),\
$(filter-out $(addsuffix .d,$(omit-deps)),\
$(+depfiles)))
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 /.
mkdir $(@:%/=%)
# 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
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)%,%,$^)`
$(RANLIB) $@
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)%,%,$^)
$(RANLIB) $@
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) and $(install-sbin) are installed from the
# object directory into $(bindir) and $(sbindir), respectively.
# $(install-others) are absolute path names of files to install; rules to
# install them are defined elsewhere.
# The simple library name to install libc.a under.
# This could be defined by a sysdep Makefile.
ifndef libc-name
libc-name := c
endif
define do-install
$(make-target-directory)
$(INSTALL_DATA) $< $@
endef
# Make the target directory if it doesn't exist, using the `mkinstalldirs'
# script that does `mkdir -p' even if `mkdir' doesn't support that flag.
define make-target-directory
$(addprefix $(..)./scripts/mkinstalldirs ,\
$(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
endef
# Any directory (parent or subdir) should install libc.a; this way
# "make install" in a subdir is guaranteed to install everything it changes.
installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
$(inst_libdir)/$(patsubst %,$(libtype$o),\
$(libprefix)$(libc-name)))
install: $(installed-libcs)
$(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
$(make-target-directory)
$(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
# Running ranlib after installing makes the __.SYMDEF time stamp up to
# date, which avoids messages from some linkers.
$(RANLIB) $@
define do-install-program
$(make-target-directory)
$(INSTALL_PROGRAM) $< $@.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))
install-lib-nosubdir: $(install-lib.so-versioned:%=$(inst_libdir)/%) \
$(install-lib.so-unversioned:%=$(inst_slibdir)/%)
# 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 := $(common-objpfx)elf/sln
symbolic-link-list := $(common-objpfx)elf/symlink.list
define make-shlib-link
echo $(<F) $@ >> $(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) $(<F) $@
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)
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)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. */';\
echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
'$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-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 := $(versioned)
include $(o-iterator)
# 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-rootsbin
$(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
$(inst_rootsbindir)/%: $(objpfx)% $(+force)
$(do-install-program)
endif
ifdef install-sbin
$(addprefix $(inst_sbindir)/,$(install-sbin)): \
$(inst_sbindir)/%: $(objpfx)% $(+force)
$(do-install-program)
endif
ifdef install-lib
install-lib.a := $(filter lib%.a,$(install-lib))
install-lib-non.a := $(filter-out lib%.a,$(install-lib))
ifdef install-lib-non.a
$(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
$(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
$(do-install)
endif
ifdef install-lib.a
$(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
$(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
$(do-install)
$(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
endif
endif
ifdef install-data
$(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
$(do-install)
endif
headers := $(strip $(headers))
ifdef headers
$(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
$(do-install)
endif # headers
.PHONY: install-bin-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-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: $(install-others)
# We need all the `-nosubdir' targets so that `install' in the parent
# doesn't depend on several things which each iterate over the subdirs.
# This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
# subroutine. Then in the parent `install-FOO' also causes subdir makes.
install-%:: install-%-nosubdir ;
.PHONY: install install-no-libc.a-nosubdir
ifeq ($(build-programs),yes)
install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
install-bin-nosubdir install-lib-nosubdir \
install-others-nosubdir install-rootsbin-nosubdir \
install-sbin-nosubdir
else
install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
install-lib-nosubdir install-others-nosubdir
endif
install: install-no-libc.a-nosubdir
# Command to compile $< in $(objdir) using the native libraries.
define native-compile
$(make-target-directory)
$(patsubst %/,cd % &&,$(objpfx)) \
$(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
$(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
endef
# Command to compile $< in $(common-objdir) using the native libraries.
# We must cd to $(objdir) anyway so that $(..)config.h is valid.
define common-objdir-compile
$(patsubst %/,cd % &&,$(objpfx)) \
$(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
$(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
endef
# We always want to use configuration definitions.
# Note that this is only used for commands running in $(objpfx).
ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
# Support the GNU standard name for this target.
.PHONY: check
check: tests
.PHONY: TAGS
TAGS: $(objpfx)distinfo $(..)MakeTAGS
$(MAKE) $(addprefix -f ,$^) $@
$(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
$(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
FORCE:
.PHONY: echo-headers
echo-headers:
@echo $(headers)
# 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) $(test-srcs)) \
$(addsuffix -bp.out,$(tests) $(test-srcs)))
# Remove the object files.
common-mostlyclean:
-rm -f $(addprefix $(objpfx),$(tests) $(test-srcs) $(others) \
$(sysdep-others) stubs \
$(addsuffix .o,$(tests) $(test-srcs) \
$(others) \
$(sysdep-others)) \
$(addsuffix -bp,$(tests) $(test-srcs)) \
$(addsuffix .out,$(tests) $(test-srcs)) \
$(addsuffix -bp.out,$(tests) $(test-srcs)))
-rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
$(install-lib.so) \
$(install-lib.so:%.so=%_pic.a))
-rm -f core
$(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)) $(+depfiles)
-rm -fr $(addprefix $(objpfx),$(generated-dirs))
-rm -f $(addprefix $(common-objpfx),$(common-generated))
-rm -f $(objpfx)distinfo
# Produce a file `stubs' which contains `#define __stub_FUNCTION'
# for each function which is a stub. We grovel over all the .d files
# looking for references to <stub-tag.h>. Then we grovel over each
# referenced source file to see what stub function it defines.
ifdef objpfx
.PHONY: stubs # The parent Makefile calls this target.
stubs: $(objpfx)stubs
endif
s = $(sysdep_dir)/generic
$(objpfx)stubs: $(+depfiles)
# Use /dev/null since `...` might expand to empty.
(s=`cd $s && $(PWD_P)`; \
$(patsubst %/,cd % &&,$(objpfx)) \
sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
`sed -n -e '\@ $s/[^ ]*\.c@{; s@^.* $s/\([^ ]*\.c\).*$$@'"$$s"'/\1@; h; }' \
-e '/stub-tag\.h/{; g; p; }' \
$(patsubst $(objpfx)%,%,$^) /dev/null` \
/dev/null) > $@T
mv -f $@T $@
# Make the distribution tar file.
.PHONY: dist
dist: $(objpfx)distinfo $(..)Make-dist
$(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
# Avoid depending on source files found in sysdeps dirs,
# because the references affect implicit rule selection.
dist: $(filter-out %.c %.S %.s,$(distribute))
# We used to simply export all these variables, but that frequently made the
# environment get too large. Instead, we write all the information into
# a generated makefile fragment `distinfo', and then include it with -f in
# the sub-make that makes the distribution (above).
$(objpfx)distinfo: Makefile $(..)Makerules \
$(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
$(make-target-directory)
$(distinfo-vars)
mv -f $@.new $@
.PHONY: subdir_distinfo
subdir_distinfo: $(objpfx)distinfo
define distinfo-vars
rm -f $@.new
echo > $@.new 'subdir := $(subdir)'
$(foreach var,subdir-dirs sources elided-routines sysdep_routines \
headers sysdep_headers distribute dont_distribute generated \
others tests test-srcs extra-libs $(extra-libs:%=%-routines) \
versioned \
$(addprefix install-,lib lib.so data bin sbin others),
echo >> $@.new '$(subdir)-$(var) := $($(var))'
echo >> $@.new '$(var) = $$($(subdir)-$(var))')
endef
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 $@
ifeq ($(with-cvs),yes)
test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@
endif
endif
endif
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