From 64e77a615d679c60803d55b5c7e2cf7214243e21 Mon Sep 17 00:00:00 2001
From: Syoyo Fujita <syoyo@lighttransport.com>
Date: Mon, 20 Apr 2020 22:12:32 +0900
Subject: [PATCH] Fix compilation with VS2017 Enable OpenSubdiv by default for
 VS2019(CMakeSettings.json)

---
 CMakeSettings.json | 5 +++++
 README.md          | 4 +++-
 src/tinyusdz.cc    | 1 +
 vcsetup-2017.bat   | 4 ++++
 4 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 vcsetup-2017.bat

diff --git a/CMakeSettings.json b/CMakeSettings.json
index ff1f50ab..85720a60 100644
--- a/CMakeSettings.json
+++ b/CMakeSettings.json
@@ -15,6 +15,11 @@
           "name": "TINYUSDZ_USE_CCACHE",
           "value": "False",
           "type": "BOOL"
+        },
+        {
+          "name": "TINYUSDZ_WITH_OPENSUBDIV",
+          "value": "True",
+          "type": "BOOL"
         }
       ]
     },
diff --git a/README.md b/README.md
index 50a17915..5753e606 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,9 @@ Recomended way is simply copy `src` and `include` folder to your app, and add `*
 
 ### CMake
 
-cmake build is still provided for CI build. Cmake project is not recommended for embedding TinyUSDZ to your app.
+cmake build is still provided for CI build. `CMakeSettings.json` is provided for Visual Studio 2019.
+
+Cmake project is not recommended for embedding TinyUSDZ to your app.
 
 ```
 $ mkdir build
diff --git a/src/tinyusdz.cc b/src/tinyusdz.cc
index 39ed62d6..84da86c3 100644
--- a/src/tinyusdz.cc
+++ b/src/tinyusdz.cc
@@ -29,6 +29,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <algorithm>
 #include <atomic>
 #include <cassert>
+#include <cctype> // std::tolower
 #include <chrono>
 #include <fstream>
 #include <map>
diff --git a/vcsetup-2017.bat b/vcsetup-2017.bat
new file mode 100644
index 00000000..e19a6747
--- /dev/null
+++ b/vcsetup-2017.bat
@@ -0,0 +1,4 @@
+rmdir /s /q build
+mkdir build
+
+cmake -G "Visual Studio 15 2017" -A x64 -Bbuild -H.