--- aclocal.m4.orig	Sat Jun  7 11:03:08 2014
+++ aclocal.m4	Sat Jun  7 11:04:37 2014
@@ -274,10 +274,6 @@ AC_DEFUN([AC_SYBASE_ASE], [
 			else
 				SYBASE_LIBDIR="$SYBASE_OCOS/lib"
 			fi
-			if [[ ! -f $SYBASE_LIBDIR/libct.so ]]; then
-				AC_MSG_RESULT(fail)
-				AC_MSG_ERROR([No properly installed FreeTDS or Sybase environment found in ${SYBASE_OCOS}.])
-			fi
 			case "${host_os}" in
 	                        *cygwin)
 					SYBASE_LIBS="-lct"
@@ -364,6 +360,8 @@ AC_DEFUN([AC_SYBASE_ASE], [
 		case "${host_os}" in
 			linux*)
 				SYBASE_OS="-ldl -lm";;
+			openbsd*)
+				SYBASE_OS="-lm";;
 			irix*)
 				SYBASE_OS="-lnsl -lm";;
 			ncr*)