diff -ur libxslt-1.1.26/configure.in libxslt-1.1.26/configure.in
--- libxslt-1.1.26/configure.in	2009-09-24 16:27:30.000000000 +0200
+++ libxslt-1.1.26/configure.in	2009-11-11 17:51:06.000000000 +0100
@@ -627,7 +627,7 @@
  WIN32_EXTRA_LDFLAGS="-no-undefined"
  ;;
  *-*-mingw*)
- WIN32_EXTRA_LIBADD="-lwsock32"
+ WIN32_EXTRA_LIBADD="-lws2_32 -lmswsock"
  WIN32_EXTRA_LDFLAGS="-no-undefined"
  AC_DEFINE([_WINSOCKAPI_],1,[Using the Win32 Socket implementation])
  AC_DEFINE([snprintf],[_snprintf],[Win32 Std C name mangling work-around])
Only in libxslt-1.1.26: configure.in.orig