Index: branches/rel3/psModules/configure.in
===================================================================
--- branches/rel3/psModules/configure.in	(revision 2163)
+++ branches/rel3/psModules/configure.in	(revision 2165)
@@ -64,3 +64,6 @@
 AC_CHECK_LIB(pslib,main,,AC_MSG_ERROR(psLib library required))
 
+dnl for MacOSX, where sqrtf is in mx
+AC_CHECK_LIB(mx,sqrtf)
+
 AC_OUTPUT(Makefile src/Makefile test/Makefile)