diff -up ./configure.in.orig ./configure.in
--- ./configure.in.orig 2013-03-25 11:56:12.588450042 -0400
+++ ./configure.in 2013-03-25 11:56:19.723645454 -0400
@@ -14,6 +14,7 @@ dnl AC_CHECK_YACC
dnl Checks for programs.
AC_PROG_INSTALL
AC_PROG_CC
+AM_PROG_CC_C_O
AC_EXEEXT
AM_PROG_LEX
AM_CONDITIONAL(USING_LEX, test "x$LEX" = "xlex")