Patch from upstream John Bowman to support gsl 2.0
---
 gsl.cc |    5 +++++
 1 file changed, 5 insertions(+)

--- asymptote.orig/gsl.cc
+++ asymptote/gsl.cc
@@ -27,6 +27,7 @@
 #include <gsl/gsl_rng.h>
 #include <gsl/gsl_randist.h>
 #include <gsl/gsl_cdf.h>
+#include <gsl/gsl_version.h>
 
 #include "opsymbols.h"
 
@@ -1088,7 +1089,11 @@
   addGSLDOUBLE2Func<gsl_sf_ellint_F>(SYM(F));
   addGSLDOUBLE2Func<gsl_sf_ellint_E>(SYM(E));
   addGSLDOUBLE3Func<gsl_sf_ellint_P>(SYM(P),SYM(phi),SYM(k),SYM(n));
+#if GSL_MAJOR_VERSION >= 2
+  addGSLDOUBLE2Func<gsl_sf_ellint_D>(SYM(D),SYM(phi),SYM(k));
+#else
   addGSLDOUBLE3Func<gsl_sf_ellint_D>(SYM(D),SYM(phi),SYM(k),SYM(n));
+#endif 
   addGSLDOUBLE2Func<gsl_sf_ellint_RC>(SYM(RC),SYM(x),SYM(y));
   addGSLDOUBLE3Func<gsl_sf_ellint_RD>(SYM(RD),SYM(x),SYM(y),SYM(z));
   addGSLDOUBLE3Func<gsl_sf_ellint_RF>(SYM(RF),SYM(x),SYM(y),SYM(z));
