--- configure.in.orig	Tue Oct  5 13:21:05 2004
+++ configure.in	Thu Oct  7 18:13:13 2004
@@ -288,6 +288,18 @@
 LD=ld
 AC_PROG_LD_GNU
 
+if test "$ac_cv_prog_gnu_ld" = "yes"; then
+	ac_cv_gnu_ld_version=`$LD -v 2>/dev/null | head -1`
+	AC_MSG_CHECKING(GNU ld release date)
+	changequote(,)dnl
+	ac_cv_gnu_ld_date=`echo $ac_cv_gnu_ld_version | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
+	changequote([,])dnl
+	AC_MSG_RESULT(${ac_cv_gnu_ld_date})
+ 	if test "$ac_cv_gnu_ld_date" -lt 20030217; then
+ 		ac_cv_gnu_ld_no_default_allow_shlib_undefined=yes
+ 	fi
+fi
+
 dnl needed before AC_TRY_COMPILE
 AC_ISC_POSIX
 
@@ -1130,7 +1142,11 @@
   case "$host_os" in
 		*linux*)   AC_DEFINE(LINUX,1,[Whether the host os is linux])
 			BLDSHARED="true"
-			LDSHFLAGS="-shared -Wl,-Bsymbolic" 
+			if test "${ac_cv_gnu_ld_no_default_allow_shlib_undefined}" = "yes"; then
+				LDSHFLAGS="-shared -Wl,-Bsymbolic -Wl,--allow-shlib-undefined" 
+			else
+				LDSHFLAGS="-shared -Wl,-Bsymbolic" 
+			fi
 			DYNEXP="-Wl,--export-dynamic"
 			PICFLAGS="-fPIC"
 			SONAMEFLAG="-Wl,-soname="