+dnl check for POSIX signals if we need them
+if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes" -a "$wxUSE_UNIX" = "yes"; then
+ AC_CHECK_FUNCS(sigaction)
+
+ if test "$ac_cv_func_sigaction" = "no"; then
+ AC_MSG_WARN([No POSIX signal functions on this system, wxApp::OnFatalException will not be called])
+ wxUSE_ON_FATAL_EXCEPTION=no
+ fi
+fi
+