-AC_CHECK_LIB(gmp, mpf_get_str, [LIBS="-lgmp $LIBS"],
- [AC_CHECK_LIB(gmp, __gmpf_get_str, [LIBS="-lgmp $LIBS"])],
- AC_MSG_ERROR(`You must install libgmp'))
+AC_ARG_WITH(libplot, [ --without-libplot don't compile in support of charts (using libplot)])
+
+if test x"$with_libplot" != x"no" ; then
+ AC_CHECK_LIB(plot, pl_newpl_r,,
+ AC_MSG_ERROR([You must install libplot (or use --without-libplot)])
+ )
+fi
+AM_CONDITIONAL(WITHCHARTS, test x"$with_libplot" != x"no")
+
+
+AC_CHECK_LIB(gmp, mpf_get_str,,
+ AC_CHECK_LIB(gmp, __gmpf_get_str,,
+ AC_MSG_ERROR([You must install libgmp])
+ )
+)
+
+AC_CHECK_LIB(gslcblas,main,,AC_MSG_ERROR([You must install libgslcblas]))
+AC_CHECK_LIB(gsl, gsl_cdf_chisq_Q,,
+ AC_MSG_ERROR([You must install libgsl version 1.4 or later]))