From d8183b68b0601141ad3f67b6e0d98684ed34da95 Mon Sep 17 00:00:00 2001
From: Karen Lucknavalai <klucknav@pixar.com>
Date: Fri, 14 Jul 2023 12:07:14 -0700
Subject: [PATCH] Fix VS2017 builds because of a missing cctype include

    - std::isspace requires include of cctype in VS2017
---
 source/MaterialXGenMsl/MslShaderGenerator.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/MaterialXGenMsl/MslShaderGenerator.cpp b/source/MaterialXGenMsl/MslShaderGenerator.cpp
index 61a1c8f572..dcb0a3ed69 100644
--- a/source/MaterialXGenMsl/MslShaderGenerator.cpp
+++ b/source/MaterialXGenMsl/MslShaderGenerator.cpp
@@ -43,6 +43,8 @@
 
 #include "MslResourceBindingContext.h"
 
+#include <cctype>
+
 MATERIALX_NAMESPACE_BEGIN
 
 const string MslShaderGenerator::TARGET = "genmsl";