diff -up gettext-0.16.1/gettext-tools/configure.ac.4-expat~ gettext-0.16.1/gettext-tools/configure.ac
--- gettext-0.16.1/gettext-tools/configure.ac.4-expat~	2006-11-27 18:02:01.000000000 +0100
+++ gettext-0.16.1/gettext-tools/configure.ac	2007-09-14 15:03:43.000000000 +0200
@@ -238,6 +238,22 @@ case "$host_os" in
     LTLIBEXPAT="-ldl"
     AC_SUBST(LIBEXPAT)
     AC_SUBST(LTLIBEXPAT)
+    AC_CHECK_HEADER([expat.h],[
+        cat > xml_major_version.c << EOF
+#include <stdio.h>
+#include <expat.h>
+int main (void) { printf ("%d\n", XML_MAJOR_VERSION); }
+EOF
+        AC_MSG_CHECKING([for libexpat XML_MAJOR_VERSION])
+        $CC -o xml_major_version xml_major_version.c
+        XML_MAJOR_VERSION=$(./xml_major_version)
+        rm -f ./xml_major_version ./xml_major_version.c
+        AC_MSG_RESULT([$XML_MAJOR_VERSION])
+        AC_SUBST(XML_MAJOR_VERSION)
+        AC_DEFINE_UNQUOTED([XML_MAJOR_VERSION],$XML_MAJOR_VERSION,[The API version of the expat library found during compilation.])
+    ],[
+        AC_ERROR([cannot determine version of expat library, expat.h is missing])
+    ])
     ;;
   *)
     AC_LIB_HAVE_LINKFLAGS([expat], [],