sci-libs/lis changed some of its function prototypes by renaming
lis_solver_get_iters to lis_solver_get_iter in version 1.4.43 from 17 July 2014

See also:
http://www.ssisc.org/lis/ChangeLog.txt
https://bugs.gentoo.org/show_bug.cgi?id=593282

--- a/modules/lis.c
+++ b/modules/lis.c
@@ -67,7 +67,7 @@
 
   lis_solve (A, b, x, solver);
   int iter;
-  lis_solver_get_iters (solver, &iter);
+  lis_solver_get_iter (solver, &iter);
   par->niter = iter;
 
   lis_vector_get_values (x, 0, lp->lhs->len, (double *) lp->lhs->data);