2004-10-20  Roland McGrath  <roland@redhat.com>

	* Makeconfig ($(common-objpfx)shlib-versions.v.i): Check also
	$(config-sysdirs) for shlib-versions files.

	* Makeconfig ($(common-objpfx)soversions.i): Replace shell loop with
	use of ...
	* scripts/soversions.awk: ... this new file.  Collect lib info and
	match any DEFAULT line before emitting anything, so DEFAULT can come
	later in the concatenation of shlib-versions files.

Index: libc/Makeconfig
===================================================================
RCS file: /cvs/glibc/libc/Makeconfig,v
retrieving revision 1.297
retrieving revision 1.298
diff -u -r1.297 -r1.298
--- libc/Makeconfig	5 Aug 2004 03:34:28 -0000	1.297
+++ libc/Makeconfig	21 Oct 2004 01:29:24 -0000	1.298
@@ -799,26 +799,19 @@
 # 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) $(subdirs)))\
+	$(wildcard $(patsubst %, $(..)%/shlib-versions,$(add-ons) \
+						       $(config-sysdirs) \
+						       $(subdirs))) \
 	$(..)shlib-versions
-$(common-objpfx)soversions.i: $(common-objpfx)shlib-versions.v
-	default_setname='$(filter-out %_default,$(oldest-abi:%=GLIBC_%))'; \
-	while read conf version setname; do \
-	  test -n "$$version" && \
-	  test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
-		     : "$$conf"` != 0 || continue; \
-	  if test "x$$version" = xDEFAULT; then \
-	    default_setname="$$setname"; \
-	  else \
-	    $(abi-default_setname) \
-	    lib=`echo $$version | sed 's/=.*$$//'`; \
-	    if eval test -z "\$${versioned_$${lib}}"; then \
-	      eval versioned_$${lib}=yes; \
-	      number=`echo $$version | sed "s/^.*=//"`; \
-	      echo $$lib $$number $${setname:-$${default_setname}}; \
-	    fi; \
-	  fi; \
-	done < $< > $@T; exit 0
+
+soversions-default-setname = $(patsubst %, %,\
+					$(filter-out %_default,\
+						     $(oldest-abi:%=GLIBC_%)))
+$(common-objpfx)soversions.i: $(..)scripts/soversions.awk \
+			      $(common-objpfx)shlib-versions.v
+	$(AWK) -v default_setname='$(soversions-default-setname)' \
+	       -v config='$(config-machine)-$(config-vendor)-$(config-os)' \
+	       -f $^ > $@T
 	mv -f $@T $@
 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i
 	(while read lib number setname; do \
Index: libc/scripts/soversions.awk
===================================================================
RCS file: /cvs/glibc/libc/scripts/soversions.awk,v
retrieving revision 1.1
diff -u -r1.1 soversions.awk
--- libc/scripts/soversions.awk	21 Oct 2004 08:31:45 -0000
+++ libc/scripts/soversions.awk	21 Oct 2004 01:29:26 -0000	1.1
@@ -0,0 +1,38 @@
+# awk script for shlib-versions.v.i -> soversions.i; see Makeconfig.
+
+# Only lines matching `config' (set with -v) are relevant to us.
+config !~ $1 { next }
+
+# Obey the first matching DEFAULT line.
+$2 == "DEFAULT" {
+  if (!matched_default) {
+    matched_default = 1;
+    $1 = $2 = "";
+    default_setname = $0;
+  }
+  next
+}
+
+# Collect all lib lines before emitting anything, so DEFAULT
+# can be interspersed.
+{
+  lib = number = $2;
+  sub(/=.*$/, "", lib);
+  sub(/^.*=/, "", number);
+  if (lib in numbers) next;
+  numbers[lib] = number;
+  if (NF > 2) {
+    $1 = $2 = "";
+    versions[lib] = $0
+  }
+}
+
+END {
+  for (lib in numbers) {
+    set = (lib in versions) ? versions[lib] : default_setname;
+    if (set)
+      print lib, numbers[lib], set;
+    else
+      print lib, numbers[lib];
+  }
+}