* Makefile (subdir-target-args): New variable.

	($(all-subdirs-targets)): Use it in place of -C option.
	* Rules: Use $(..) instead of ../ if it's already defined.
	* Makeconfig (subdir-srcdirs): New variable.
	* csu/Makefile (all-Banner-files): Use it.

	* configure.in (--enable-add-ons): Set to "yes" by default.
	Handle absolute add-on directory names when looking for configure
	fragments.  Also look for sysdeps/*/preconfigure fragments in add-ons.
	Require add-on configure to set $libc_add_on_canonical, use
	that in $add_ons_sfx.  Substitute add_on_subdirs with computed list
	of subdir names each add-on configure set in libc_add_on_subdirs.
	* configure: Regenerated.
	* Makefile (%/preconfigure: %/preconfigure.in): New pattern rule.
	* config.make.in (add-on-subdirs): New substituted variable.
	* Makeconfig (all-subdirs): Include $(add-on-subdirs).
	Remove $(add-ons), $(sysdep-subdirs).
	Don't filter out $(sysdep-inhibit-subdirs).
	($(common-objpfx)sysd-dirs): Target removed.  Don't include it.
	($(common-objpfx)sysd-sorted): Rewritten to feed Depend and Subdirs
	files together to gen-sorted.awk, and $(subdirs) via -v.
	(subdirs): Remove magic reordering for mach and hurd.
	* scripts/gen-sorted.awk: Use subdirs from command line.
	Process Subdirs and Depend files directly.
	Let Subdirs files use "first dir" and "inhibit dir".
	Always move elf to the end of the list.
	* hurd/Depend: New file.
	* sysdeps/mach/Subdirs: Use "first mach".

	* Makefile (dist-separate): Remove linuxthreads.
	(dist-separate-linuxthreads): Variable removed.
	(glibc-%.tar rule): Use $(sysdeps-add-ons).

	* Makerules ($(common-objpfx)Versions.v.i): Use $(subdirs),
	not $(all-subdirs).
	(sysdep-makefiles): Use $(sysdirs).
	(sysdirs): Remove export.
	($(+sysdir_pfx)sysd-rules): Handle absolute directory names in
	$(config-sysdirs).
	(+sysdir_pfx): Variable removed.
	(sysd-rules): Use $(common-objpfx) in place of it.
	(sysdirs): Variable moved to ...
	* Makeconfig (sysdirs): ... here.
	Handle absolute directory names in $(config-sysdirs).
	(full_config_sysdirs): Variable removed.
	* csu/Makefile: Use $(sysdirs) in vpath directive.
	* math/Makefile (ulps-file): Use $(sysdirs).
	* sysdeps/gnu/Makefile (errlist-c): Likewise.
	($(objpfx)errlist-compat.c): Likewise.
	* Makeconfig (all-Subdirs-files): Likewise.
	($(common-objpfx)config.status): Likewise.

	* configure.in (sysnames): Handle absolute add-on directory names.
	(sysdeps_add_ons): New variable, AC_SUBST it.
	Compute which add-ons contributed sysdeps directories.
	* configure: Regenerated.
	* config.make.in (sysdeps-add-ons): New substituted variable.
	* Makerules (+sysdep_dirs, +sysdep-includes): Variables moved ...
	* Makeconfig: ... to here.
	(+sysdep_dirs): Append $(sysdeps-add-ons) here.
	(+includes): Remove $(objpfx) include, already in $(+sysdep_dirs).
	Remove $(includes).
	(sysdep-makeconfigs): Use $(+sysdep_dirs).
	($(common-objpfx)shlib-versions.v.i): Likewise.

	* Makeconfig: Remove hair to set Makeconfig-add-on.

	* sysdeps/unix/Makefile (sysdirs): Remove export.
	(asm_CPP): Variable removed.
	($(common-objpfx)sysd-syscalls): Pass them directly for the script.

	* sysdeps/posix/Makefile: New file.
	* Makerules (L_tmpnam, TMP_MAX, L_ctermid, L_cuserid): Set non-posix
	values here with ?=.

	* stdlib/gen-mpn-copy: File removed.
	* stdlib/Makefile (distribute): Remove it.
	* configure.in: Don't grok --with-gmp.
	* configure: Regenerated.

	* configure.in (libc_cv_idn): Don't check it; libidn/configure does it.
	* configure: Regenerated.

	* bare: Directory removed, saved in ports repository.

ChangeLog

@@ -1,3 +1,88 @@
+2006-02-27  Roland McGrath  <roland@redhat.com>
+
+	* Makefile (subdir-target-args): New variable.
+	($(all-subdirs-targets)): Use it in place of -C option.
+	* Rules: Use $(..) instead of ../ if it's already defined.
+	* Makeconfig (subdir-srcdirs): New variable.
+	* csu/Makefile (all-Banner-files): Use it.
+
+	* configure.in (--enable-add-ons): Set to "yes" by default.
+	Handle absolute add-on directory names when looking for configure
+	fragments.  Also look for sysdeps/*/preconfigure fragments in add-ons.
+	Require add-on configure to set $libc_add_on_canonical, use
+	that in $add_ons_sfx.  Substitute add_on_subdirs with computed list
+	of subdir names each add-on configure set in libc_add_on_subdirs.
+	* configure: Regenerated.
+	* Makefile (%/preconfigure: %/preconfigure.in): New pattern rule.
+	* config.make.in (add-on-subdirs): New substituted variable.
+	* Makeconfig (all-subdirs): Include $(add-on-subdirs).
+	Remove $(add-ons), $(sysdep-subdirs).
+	Don't filter out $(sysdep-inhibit-subdirs).
+	($(common-objpfx)sysd-dirs): Target removed.  Don't include it.
+	($(common-objpfx)sysd-sorted): Rewritten to feed Depend and Subdirs
+	files together to gen-sorted.awk, and $(subdirs) via -v.
+	(subdirs): Remove magic reordering for mach and hurd.
+	* scripts/gen-sorted.awk: Use subdirs from command line.
+	Process Subdirs and Depend files directly.
+	Let Subdirs files use "first dir" and "inhibit dir".
+	Always move elf to the end of the list.
+	* hurd/Depend: New file.
+	* sysdeps/mach/Subdirs: Use "first mach".
+
+	* Makefile (dist-separate): Remove linuxthreads.
+	(dist-separate-linuxthreads): Variable removed.
+	(glibc-%.tar rule): Use $(sysdeps-add-ons).
+
+	* Makerules ($(common-objpfx)Versions.v.i): Use $(subdirs),
+	not $(all-subdirs).
+	(sysdep-makefiles): Use $(sysdirs).
+	(sysdirs): Remove export.
+	($(+sysdir_pfx)sysd-rules): Handle absolute directory names in
+	$(config-sysdirs).
+	(+sysdir_pfx): Variable removed.
+	(sysd-rules): Use $(common-objpfx) in place of it.
+	(sysdirs): Variable moved to ...
+	* Makeconfig (sysdirs): ... here.
+	Handle absolute directory names in $(config-sysdirs).
+	(full_config_sysdirs): Variable removed.
+	* csu/Makefile: Use $(sysdirs) in vpath directive.
+	* math/Makefile (ulps-file): Use $(sysdirs).
+	* sysdeps/gnu/Makefile (errlist-c): Likewise.
+	($(objpfx)errlist-compat.c): Likewise.
+	* Makeconfig (all-Subdirs-files): Likewise.
+	($(common-objpfx)config.status): Likewise.
+
+	* configure.in (sysnames): Handle absolute add-on directory names.
+	(sysdeps_add_ons): New variable, AC_SUBST it.
+	Compute which add-ons contributed sysdeps directories.
+	* configure: Regenerated.
+	* config.make.in (sysdeps-add-ons): New substituted variable.
+	* Makerules (+sysdep_dirs, +sysdep-includes): Variables moved ...
+	* Makeconfig: ... to here.
+	(+sysdep_dirs): Append $(sysdeps-add-ons) here.
+	(+includes): Remove $(objpfx) include, already in $(+sysdep_dirs).
+	Remove $(includes).
+	(sysdep-makeconfigs): Use $(+sysdep_dirs).
+	($(common-objpfx)shlib-versions.v.i): Likewise.
+
+	* Makeconfig: Remove hair to set Makeconfig-add-on.
+
+	* sysdeps/unix/Makefile (sysdirs): Remove export.
+	(asm_CPP): Variable removed.
+	($(common-objpfx)sysd-syscalls): Pass them directly for the script.
+
+	* sysdeps/posix/Makefile: New file.
+	* Makerules (L_tmpnam, TMP_MAX, L_ctermid, L_cuserid): Set non-posix
+	values here with ?=.
+
+	* stdlib/gen-mpn-copy: File removed.
+	* stdlib/Makefile (distribute): Remove it.
+	* configure.in: Don't grok --with-gmp.
+	* configure: Regenerated.
+
+	* configure.in (libc_cv_idn): Don't check it; libidn/configure does it.
+	* configure: Regenerated.
+
 2006-02-27  Ulrich Drepper  <drepper@redhat.com>
 
 	* sysdeps/unix/sysv/linux/linkat.c (linkat): Allow flags to be set
@@ -6,6 +91,8 @@
 
 2006-02-26  Roland McGrath  <roland@redhat.com>
 
+	* bare: Directory removed, saved in ports repository.
+
 	* sysdeps/unix/common/Makefile: File removed.
 	* sysdeps/unix/common/glue-ctype.c: File removed.
 	* sysdeps/unix/common/configure.in: File removed.

Makeconfig

@@ -99,7 +99,20 @@ binfmt-subdir = aout
 endif
 
 # Complete path to sysdep dirs.
-export full_config_sysdirs := $(addprefix $(..),$(config-sysdirs))
+# `configure' writes a definition of `config-sysdirs' in `config.make'.
+sysdirs := $(foreach D,$(config-sysdirs),$(firstword $(filter /%,$D) $(..)$D))
+
+# Add-ons that contribute sysdeps trees get added to the include list
+# after sysdeps/generic.  This makes #include <sysdeps/...> work right
+# to find specific add-on files without assuming the add-on directory name.
+# It also means that headers can go into an add-on's base directory
+# instead of the add-on needing a sysdeps/generic of its own.
++sysdep_dirs := $(sysdirs) $(foreach add-on,$(sysdeps-add-ons),\
+				     $(firstword $(filter /%,$(add-on)) \
+						 $(..)$(add-on)))
+ifdef objdir
++sysdep_dirs := $(objdir) $(+sysdep_dirs)
+endif
 
 # Run config.status to update config.make and config.h.  We don't show the
 # dependence of config.h to Make, because it is only touched when it
@@ -113,16 +126,16 @@ $(common-objpfx)config.make: $(common-objpfx)config.status \
 # Find all the add-on and sysdeps configure fragments, to make sure we
 # re-run configure when any of them changes.
 $(common-objpfx)config.status: $(..)version.h $(..)configure \
-			       $(foreach dir,$(full_config_sysdirs),\
-					 $(wildcard \
-					   $(dir)/Implies) \
+			       $(foreach dir,$(sysdirs),\
+					 $(wildcard $(dir)/Implies) \
 					 $(patsubst %.in,%,\
 						    $(firstword $(wildcard \
  $(addprefix $(dir)/,configure configure.in))))) \
 			       $(patsubst %.in,%,\
-					  $(foreach dir,$(add-ons),\
+					  $(foreach add-on,$(add-ons),\
 						    $(firstword $(wildcard \
- $(addprefix $(..)$(dir)/,configure configure.in)))))
+ $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
+	     configure configure.in)))))
 	@cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
 	 echo The GNU C library has not been configured. >&2; \
 	 echo Run \`configure\' to configure it before building. >&2; \
@@ -632,11 +645,10 @@ endif	# $(+cflags) == ""
 # include files (including ones given in angle brackets) in the parent
 # library source directory, in the include directory, and in the
 # current directory.
-# `+sysdep-includes' will be defined by Makerules.
-+includes = -I$(..)include \
-	    $(patsubst %/,-I%,$(objpfx)) $(+sysdep-includes) \
-	    $(patsubst %/,-I%,$(..)) $(libio-include) $(includes) -I. \
-	    $(sysincludes)
++sysdep-includes = $(addprefix -I,$(+sysdep_dirs))
++includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \
+	    $(+sysdep-includes) \
+	    $(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes)
 
 # Since libio has several internal header files, we use a -I instead
 # of many little headers in the include directory.
@@ -753,12 +765,10 @@ endif
 
 move-if-change = $(SHELL) $(..)scripts/move-if-change
 
--include $(common-objpfx)sysd-dirs
-
-ifeq ($(sysd-dirs-done),t)
 -include $(common-objpfx)sysd-sorted
 subdirs = $(sorted-subdirs)
-endif
+subdir-srcdirs = $(foreach dir,$(subdirs),\
+			   $(firstword $($(dir)-srcdir) $(..)$(dir)))
 
 ifeq (yes, $(build-shared))
 
@@ -789,9 +799,8 @@ ifndef avoid-generated
 # This lets add-ons give more-specific matches that override defaults
 # in the top-level file.
 $(common-objpfx)shlib-versions.v.i: \
-	$(wildcard $(patsubst %, $(..)%/shlib-versions,$(add-ons) \
-						       $(config-sysdirs) \
-						       $(subdirs))) \
+	$(wildcard $(+sysdep_dirs:=/shlib-versions) \
+		   $(subdir-srcdirs:=/shlib-versions)) \
 	$(..)shlib-versions
 
 soversions-default-setname = $(patsubst %, %,\
@@ -891,81 +900,39 @@ endif
 
 # These are the subdirectories containing the library source.  The order
 # is more or less arbitrary.  The sorting step will take care of the
-# dependencies.  Only the $(binfmt-subdir) should always be kept at the
-# end of the list.
+# dependencies.
 all-subdirs = csu assert ctype locale intl catgets math setjmp signal	    \
-	      stdlib stdio-common libio malloc string wcsmbs time dirent \
+	      stdlib stdio-common libio malloc string wcsmbs time dirent    \
 	      grp pwd posix io termios resource misc socket sysvipc gmon    \
 	      gnulib iconv iconvdata wctype manual shadow po argp	    \
-	      crypt $(add-ons) nss localedata timezone rt conform debug	    \
-	      $(sysdep-subdirs) $(dlfcn) $(binfmt-subdir)
-all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs))
-
-# The mach and hurd subdirectories have many generated header files which
-# much of the 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))
+	      crypt nss localedata timezone rt conform debug		    \
+	      $(add-on-subdirs) $(dlfcn) $(binfmt-subdir)
 
 ifndef avoid-generated
-all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs))
-$(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files)
-	$(AWK) 'BEGIN { subdirs = ""; inhibit = "" };			\
-		/^#/ { next };						\
-		/^[^-]/ { subdirs = subdirs " " $$0 };			\
-		/^-/ { inhibit = inhibit " " substr($$0, 2) };		\
-		END { printf "sysdep-subdirs =%s\n", subdirs;		\
-		      printf "sysdep-inhibit-subdirs =%s\n", inhibit;	\
-		      print "sysd-dirs-done = t" }'			\
-	       $(patsubst $<,/dev/null,$^) > $@-tmp
-	mv -f $@-tmp $@
-
-all-Depend-files = $(wildcard $(..)*/Depend)
-$(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \
-			     $(common-objpfx)sysd-dirs $(..)Makeconfig
-	{ { dirs='$(patsubst $(..)%/Depend,%,$(filter %/Depend,$^))';	  \
-	    for d in $$dirs; do						  \
-	      while read on; do						  \
-		echo "depend $$d $$on";					  \
-	      done < $(..)$$d/Depend;					  \
-	    done;							  \
-	    for f in $(all-subdirs); do					  \
-	      echo $$f;							  \
-	    done;							  \
-	  } | $(AWK) -f $< &&						  \
-	  echo sysd-sorted-done = t;					  \
-	} > $@-tmp
+all-Depend-files := $(wildcard $(foreach dir,$(all-subdirs),\
+					 $(firstword $($(dir)-srcdir) \
+						     $(..)$(dir))/Depend))
+$(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \
+			     $(common-objpfx)config.make $(..)Makeconfig \
+			     $(wildcard $(sysdirs:=/Subdirs)) \
+			     $(all-Depend-files)
+	$(AWK) -f $< \
+	       -v subdirs='$(all-subdirs)' \
+	       -v srcpfx='$(..)' \
+	       $(filter %/Subdirs %/Depend,$^) > $@-tmp
 	mv -f $@-tmp $@
 $(all-Depend-files): ;
 endif
 
 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
-sysdep-makeconfigs := $(wildcard $(patsubst %,$(..)%/Makeconfig,\
-					    $(config-sysdirs) $(add-ons)))
-
+sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig))
 ifneq (,$(sysdep-makeconfigs))
-Makeconfig-doing-sysdep := $(sysdep-makeconfigs)
-# Before each one, include ourselves again to do the bit below that
-# will set `Makeconfig-add-on' in an add-on's Makeconfig fragment.
-include $(foreach M,$(sysdep-makeconfigs),$(..)Makeconfig $M)
+include $(sysdep-makeconfigs)
 endif
 
 
 endif # Makeconfig not yet included
 
-# The whole body above didn't run when we are included as a subroutine
-# of ourselves in the sysdep-makeconfigs include line.  This bit runs.
-ifneq (,$(Makeconfig-doing-sysdep))
-sysdep-Makeconfig := $(firstword $(Makeconfig-doing-sysdep))
-Makeconfig-doing-sysdep := $(filter-out $(sysdep-Makeconfig),\
-					$(Makeconfig-doing-sysdep))
-Makeconfig-add-on := $(filter $(add-ons),$(patsubst $(..)%/Makeconfig,%,\
-						    $(sysdep-Makeconfig)))
-endif
-
 # Local Variables:
 # mode: makefile
 # End:

Makefile

@@ -50,6 +50,7 @@ endef
 
 configure: configure.in aclocal.m4; $(autoconf-it)
 %/configure: %/configure.in aclocal.m4; $(autoconf-it)
+%/preconfigure: %/preconfigure.in aclocal.m4; $(autoconf-it)
 
 endif # $(AUTOCONF) = no
 
@@ -202,7 +203,13 @@ all-subdirs-targets := $(foreach dir,$(subdirs),\
 # The action for each of those is to cd into the directory and make the
 # target there.
 $(all-subdirs-targets):
-	$(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)
+	$(MAKE) $(PARALLELMFLAGS) $(subdir-target-args) $(@F)
+
+define subdir-target-args
+subdir=$(@D)$(if $($(@D)-srcdir),\
+-C $($(@D)-srcdir) ..=`pwd`/,\
+-C $(@D) ..=../)
+endef
 
 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 
@@ -353,17 +360,16 @@ files-for-dist := README FAQ INSTALL NOTES configure
 tag-of-stem = glibc-$(subst .,_,$*)
 
 # Add-ons in the main repository but distributed in their own tar files.
-dist-separate = libidn linuxthreads
+dist-separate = libidn
 
 # Directories in each add-on.
 dist-separate-libidn = libidn
-dist-separate-linuxthreads = linuxthreads linuxthreads_db
 
 glibc-%.tar $(dist-separate:%=glibc-%-%.tar): $(files-for-dist) \
 					      $(foreach D,$(dist-separate),\
 							$D/configure)
 	@rm -fr glibc-$*
-	$(MAKE) -q `find sysdeps $(addsuffix /sysdeps,$(add-ons)) \
+	$(MAKE) -q `find sysdeps $(addsuffix /sysdeps,$(sysdeps-add-ons)) \
 			 -name configure`
 	cvs $(CVSOPTS) -Q export -d glibc-$* -r $(tag-of-stem) libc
 # Touch all the configure scripts going into the tarball since cvs export