Fix the Ceres Android NDK build.
The NDK build of Ceres was broken; this fixes it and also
disables a useless warning that shows up in NDK 8b.
Change-Id: I54cfb3de7ccea4a0864385f7ffdb55d8f3431f34
diff --git a/internal/ceres/types.cc b/internal/ceres/types.cc
index 225384d..fc33a4c 100644
--- a/internal/ceres/types.cc
+++ b/internal/ceres/types.cc
@@ -29,6 +29,7 @@
// Author: sameeragarwal@google.com (Sameer Agarwal)
#include <algorithm>
+#include <cctype>
#include <string>
#include "ceres/types.h"
#include "glog/logging.h"
