--- libsigc++-2.0.6/configure.ac.old	2005-01-21 16:05:45.000000000 +0100
+++ libsigc++-2.0.6/configure.ac	2005-01-21 16:07:35.000000000 +0100
@@ -74,6 +74,9 @@
 SIGC_CXX_GCC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD()
 SIGC_CXX_MSVC_TEMPLATE_SPECIALIZATION_OPERATOR_OVERLOAD()
 
+dnl FIXME Define this here since it does not seem to be defined elsewhere
+AC_DEFINE(SIGC_API, [], [Empty specifier])
+
 if test "X$config_error" = "Xyes" ; then
   AC_ERROR(
 [One or more of the required compiler features is missing.