Update minimum C++ version to C++14

This changelist updates the minimum C++ version in MaterialX 1.38.8 from C++11 to C++14, as approved in a recent meeting of the MaterialX TSC.

Additional changes include:

- Update documentation for minimum C++ version and compilers on each platform.
- Add initial usages of std::make_unique and [[deprecated]].

CMakeLists.txt

@@ -6,7 +6,7 @@ set(MATERIALX_LIBRARY_VERSION ${MATERIALX_MAJOR_VERSION}.${MATERIALX_MINOR_VERSI
 
 # Cmake setup
 cmake_minimum_required(VERSION 3.1)
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
 set(CMAKE_MACOSX_RPATH ON)
 enable_testing()

README.md

@@ -20,11 +20,11 @@ MaterialX is an open standard for representing rich material and look-developmen
 
 ### Supported Platforms
 
-The MaterialX codebase requires a compiler with support for C++11, and can be built with any of the following:
+The MaterialX codebase requires a compiler with support for C++14, and can be built with any of the following:
 
-- Microsoft Visual Studio 2015 or newer
-- GCC 4.8 or newer
-- Clang 3.3 or newer
+- Microsoft Visual Studio 2017 or newer
+- GCC 6 or newer
+- Clang 6 or newer
 
 The Python bindings for MaterialX are based on [PyBind11](https://github.com/pybind/pybind11), and support Python versions 2.7 and 3.x.
 

documents/DeveloperGuide/MainPage.md

@@ -11,11 +11,11 @@ MaterialX is an open standard for transfer of rich material and look-development
 
 ### Supported Platforms
 
-The MaterialX codebase requires a compiler with support for C++11, and can be built with any of the following:
+The MaterialX codebase requires a compiler with support for C++14, and can be built with any of the following:
 
-- Microsoft Visual Studio 2015 or newer
-- GCC 4.8 or newer
-- Clang 3.3 or newer
+- Microsoft Visual Studio 2017 or newer
+- GCC 6 or newer
+- Clang 6 or newer
 
 The Python bindings for MaterialX are based on [PyBind11](https://github.com/pybind/pybind11), and support Python versions 2.7 and 3.x.
 

source/MaterialXCore/Document.cpp

@@ -153,7 +153,7 @@ class Document::Cache
 
 Document::Document(ElementPtr parent, const string& name) :
     GraphElement(parent, CATEGORY, name),
-    _cache(std::unique_ptr<Cache>(new Cache))
+    _cache(std::make_unique<Cache>())
 {
 }
 

source/MaterialXGenShader/Util.h

@@ -90,8 +90,8 @@ MX_GENSHADER_API bool hasElementAttributes(OutputPtr output, const StringVec& at
 // These are deprecated wrappers for older versions of the function interfaces in this module.
 // Clients using these interfaces should update them to the latest API.
 //
-MX_GENSHADER_API void findRenderableMaterialNodes(ConstDocumentPtr doc, vector<TypedElementPtr>& elements, bool, std::unordered_set<ElementPtr>&);
-MX_GENSHADER_API void findRenderableElements(ConstDocumentPtr doc, vector<TypedElementPtr>& elements, bool includeReferencedGraphs = false);
+MX_GENSHADER_API [[deprecated]] void findRenderableMaterialNodes(ConstDocumentPtr doc, vector<TypedElementPtr>& elements, bool, std::unordered_set<ElementPtr>&);
+MX_GENSHADER_API [[deprecated]] void findRenderableElements(ConstDocumentPtr doc, vector<TypedElementPtr>& elements, bool includeReferencedGraphs = false);
 
 MATERIALX_NAMESPACE_END