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+# Copyright (C) 1991, 1992, 1993, 1994, 1995 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 Library General Public License as
+# published by the Free Software Foundation; either version 2 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
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB.  If
+# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+# Cambridge, MA 02139, USA.
+
+#
+#	Master Makefile for the GNU C library
+#
+ifneq (,)
+This makefile requires GNU Make.
+endif
+
+
+# This is the default target; it makes everything except the tests.
+.PHONY: all
+all: lib others
+
+define autoconf-it
+autoconf $(ACFLAGS) $< > $@.new
+mv -f $@.new $@
+test -d CVS && cvs commit -m'Regenerated: autoconf $(ACFLAGS) $<' $@
+endef
+
+configure: configure.in; $(autoconf-it)
+%/configure: %/configure.in; $(autoconf-it)
+
+include Makeconfig
+
+ifndef avoid-generated
+include $(objpfx)sysd-dirs
+define \n
+
+
+endef
+sysdep-subdirs := $(subst $(\n), ,$(sysdep-subdirs))
+endif
+
+# These are the subdirectories containing the library source.
++ansi_dirs	:= assert ctype locale math setjmp \
+		   signal stdio stdlib malloc string time
++posix_dirs	:= dirent grp pwd posix io termios
++other_dirs	:= resource socket misc gnulib $(wildcard crypt) manual csu
+subdirs		:= $(strip $(+ansi_dirs) $(+posix_dirs) $(+other_dirs) \
+			   $(sysdep-subdirs))
+export subdirs := $(subdirs)	# Benign, useless in GNU make before 3.63.
+
+# 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).  The before-compile additions in
+# sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
+# not to exist when making in other directories, but it will be slower that
+# way with more somewhat expensive `make' invocations.
+subdirs	:= $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
+	   $(filter-out mach hurd,$(subdirs))
+
+# All initialization source files.
++subdir_inits	:= $(wildcard $(foreach dir,$(subdirs),$(dir)/init-$(dir).c))
+# All subdirectories containing initialization source files.
++init_subdirs	:= $(patsubst %/,%,$(dir $(+subdir_inits)))
+
+
+# These are the targets that are made by making them in each subdirectory.
++subdir_targets	:= subdir_lib objects objs others subdir_mostlyclean	\
+		   subdir_clean subdir_distclean subdir_realclean	\
+		   tests subdir_lint.out				\
+		   subdir_echo-headers subdir_echo-distinfo		\
+		   subdir_install $(addprefix install-,			\
+					      no-libc.a bin lib		\
+					      data headers others)
+
+headers := features.h errno.h sys/errno.h errnos.h limits.h $(stddef.h)
+aux	 = sysdep $(libc-init) version
+
+echo-headers: subdir_echo-headers
+
+# What to install.
+install-others = $(includedir)/stubs.h
+
+ifeq (yes,$(gnu-ld))
+libc-init = set-init
+else
+libc-init = munch-init
+$(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
+	awk -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
+	mv -f $@-t $@
+generated := $(generated) munch-init.c
+endif
+
+
+include Makerules
+
+# Install from subdirectories too.
+install: subdir_install
+
+lib-noranlib $(libc.a)(__.SYMDEF): subdir_lib
+
+
+$(objpfx)sysd-dirs: $(+sysdir_pfx)config.make
+	(echo define sysdep-subdirs;					      \
+	 for dir in $(sysdirs); do					      \
+	   if [ -r $(sysdep_dir)/$$dir/Subdirs ]; then			      \
+	     sed 's/#.*$$//' $(sysdep_dir)/$$dir/Subdirs;		      \
+	   else true;							      \
+	   fi;								      \
+	 done;								      \
+	 echo endef) > $@-tmp
+	 mv -f $@-tmp $@
+
+# Makerules creates a file `stub-$(subdir)' for each subdirectory, which
+# contains `#define __stub_FUNCTION' for each function which is a stub.
+# Here we paste all of these together into <stubs.h>.
+
+subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)stub-$(dir))
+
+# Since stubs.h is never needed when building the library, we simplify the
+# hairy installation process by producing it in place only as the last part
+# of the top-level `make install'.  It depends on subdir_install, which
+# iterates over all the subdirs; subdir_install in each subdir depends on
+# the subdir's stubs file.  Having more direct dependencies would result in
+# extra iterations over the list for subdirs and many recursive makes.
+$(includedir)/stubs.h: subdir_install
+	@rm -f $(objpfx)stubs.h
+	(echo '/* This file is automatically generated.';\
+	 echo '   It defines a symbol `__stub_FUNCTION'\'' for each function';\
+	 echo '   in the C library which is a stub, meaning it will fail';\
+	 echo '   every time called, usually setting errno to ENOSYS.  */';\
+	 sort $(subdir-stubs)) > $(objpfx)stubs.h
+	$(INSTALL_DATA) $(objpfx)stubs.h $@
+	rm -f $(objpfx)stubs.h
+
+# This makes the Info or DVI file of the documentation from the Texinfo source.
+.PHONY: info dvi
+info dvi:
+	$(MAKE) -C manual $@
+
+# This makes all the subdirectory targets.
+
+# For each target, make it depend on DIR/target for each subdirectory DIR.
+$(+subdir_targets): %: $(addsuffix /%,$(subdirs))
+
+# Compute a list of all those targets.
+all-subdirs-targets := $(foreach dir,$(subdirs),\
+				 $(addprefix $(dir)/,$(+subdir_targets)))
+
+# The action for each of those is to cd into the directory and make the
+# target there.
+$(all-subdirs-targets):
+	$(MAKE) -C $(@D) $(@F)
+
+.PHONY: $(+subdir_targets) $(all-subdirs-targets)
+
+# Targets to clean things up to various degrees.
+
+.PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean
+
+# Subroutines of all cleaning targets.
+parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
+	-rm -f $(libc.a) $(addprefix $(objpfx),$(install-lib))
+parent-clean: parent-mostlyclean common-clean
+	-rm -f $(addprefix $(common-objpfx),$(common-generated))
+	-rm -f $(addprefix $(+sysdir_pfx),sysd-Makefile sysd-dirs sysd-rules)
+
+clean: parent-clean
+# This is done this way rather than having `subdir_clean' be a
+# dependency of this target so that libc.a will be removed before the
+# subdirectories are dealt with and so they won't try to remove object
+# files from it when it's going to be removed anyway.
+	@$(MAKE) subdir_clean no_deps=t
+mostlyclean: parent-mostlyclean
+	@$(MAKE) subdir_mostlyclean no_deps=t
+
+# The realclean target is just like distclean for the parent, but we want
+# the subdirs to know the difference in case they care.
+realclean distclean: parent-clean
+# This is done this way rather than having `subdir_distclean' be a
+# dependency of this target so that libc.a will be removed before the
+# subdirectories are dealt with and so they won't try to remove object
+# files from it when it's going to be removed anyway.
+	@$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes
+
+# Subroutine of distclean and realclean.
+distclean-1: subdir_$(distclean-1)
+	-rm -f $(config-generated)
+	-rm -f $(addprefix $(objpfx),config.status cache.cache)
+	-rm -f $(addprefix $(objpfx),config.make config-name.h)
+ifdef objdir
+	-rm -f $(objpfx)Makefile
+endif
+	-rm -f $(sysdep-$(distclean-1))
+
+.PHONY: echo_subdirs
+echo_subdirs:;@echo '$(subdirs)'
+
+.PHONY: echo-distinfo parent_echo-distinfo
+echo-distinfo: parent_echo-distinfo subdir_echo-distinfo
+parent_echo-distinfo:
+	@echo $(addprefix +header+,$(headers)) \
+	      $(addprefix +nodist+,$(generated))
+
+# Make the distribution tarfile.
+
+distribute  := README INSTALL NOTES COPYING.LIB COPYING ChangeLog NEWS	\
+	       Makefile Makeconfig Makerules Rules Make-dist MakeTAGS	\
+	       ansidecl.h mkinstalldirs move-if-change install-sh	\
+	       configure configure.in aclocal.m4 config.sub config.guess\
+	       config.make.in config-name.in Makefile.in \
+	       munch-tmpl.c munch.awk sysdep.h set-hooks.h libc-symbols.h
+
+distribute := $(strip $(distribute))
+generated := $(generated) stubs.h
+
+README: README.template version.c ; # Make-dist should update README.
+
+define format-me
+@rm -f $@
+makeinfo --no-validate --no-warn --no-headers $< -o $@
+-chmod a-w $@
+endef
+INSTALL: manual/maint.texi; $(format-me)
+NOTES: manual/creature.texi; $(format-me)