From 6d864d156da2e006b309eaa161437eea10fd4684 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Thu, 21 Oct 2004 01:29:31 +0000
Subject: [PATCH] * 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.
---
 ChangeLog              |  9 +++++++++
 Makeconfig             | 31 ++++++++++++-------------------
 scripts/soversions.awk | 38 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 59 insertions(+), 19 deletions(-)
 create mode 100644 scripts/soversions.awk

diff --git a/ChangeLog b/ChangeLog
index 6a6083f08c..e12b6c6f4a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,14 @@
 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.
+
 	* manual/errno.texi (Error Codes): Add ENOKEY, EKEYEXPIRED,
 	EKEYREVOKED, EKEYREJECTED.
 	* sysdeps/unix/sysv/linux/Versions (libc: GLIBC_2.3.4): New errlist.
diff --git a/Makeconfig b/Makeconfig
index 8490d077b6..ea3a782cda 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -799,26 +799,19 @@ 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) $(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 \
diff --git a/scripts/soversions.awk b/scripts/soversions.awk
new file mode 100644
index 0000000000..6207088514
--- /dev/null
+++ b/scripts/soversions.awk
@@ -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];
+  }
+}