force disable corresponding cmake properties when MATERIALX_BUILD_IOS…

… is enabled.

CMakeLists.txt

@@ -31,38 +31,50 @@ if (MATERIALX_BUILD_JS)
     endif()
 endif()
 
-option(MATERIALX_BUILD_IOS "Build the MaterialX for iOS." OFF)
-if (MATERIALX_BUILD_IOS)
-    set(CMAKE_SYSTEM_NAME iOS)
-    add_definitions(-DTARGET_OS_IOS=1)
-endif()
-
 project(MaterialX)
 
-if(NOT MATERIALX_BUILD_IOS)
 option(MATERIALX_BUILD_PYTHON "Build the MaterialX Python package from C++ bindings. Requires Python 3.6 or greater." OFF)
 option(MATERIALX_BUILD_VIEWER "Build the MaterialX Viewer." OFF)
 option(MATERIALX_BUILD_GRAPH_EDITOR "Build the MaterialX Graph Editor." OFF)
 option(MATERIALX_BUILD_DOCS "Create HTML documentation using Doxygen. Requires that Doxygen be installed." OFF)
+
 option(MATERIALX_BUILD_GEN_GLSL "Build the GLSL shader generator back-end." ON)
 option(MATERIALX_BUILD_GEN_OSL "Build the OSL shader generator back-end." ON)
 option(MATERIALX_BUILD_GEN_MDL "Build the MDL shader generator back-end." ON)
-option(MATERIALX_BUILD_OIIO "Build OpenImageIO support for MaterialXRender." OFF)
-option(MATERIALX_PYTHON_LTO "Enable link-time optimizations for MaterialX Python." ON)
-option(MATERIALX_INSTALL_PYTHON "Install the MaterialX Python package as a third-party library when the install target is built." ON)
-option(MATERIALX_DYNAMIC_ANALYSIS "Build MaterialX libraries with dynamic analysis on supporting platforms." OFF)
-option(MATERIALX_OSL_LEGACY_CLOSURES "Build OSL shader generation supporting the legacy OSL closures." ON)
-option(MATERIALX_BUILD_TESTS "Build unit tests." ON)
-option(MATERIALX_TEST_RENDER "Run rendering tests for MaterialX Render module. GPU required for graphics validation." ON)
-endif()
-
 option(MATERIALX_BUILD_GEN_MSL "Build the MSL shader generator back-end." ON)
 option(MATERIALX_BUILD_RENDER "Build the MaterialX Render modules." ON)
+option(MATERIALX_BUILD_OIIO "Build OpenImageIO support for MaterialXRender." OFF)
+option(MATERIALX_BUILD_TESTS "Build unit tests." ON)
 
 option(MATERIALX_BUILD_SHARED_LIBS "Build MaterialX libraries as shared rather than static." OFF)
-
+option(MATERIALX_PYTHON_LTO "Enable link-time optimizations for MaterialX Python." ON)
+option(MATERIALX_INSTALL_PYTHON "Install the MaterialX Python package as a third-party library when the install target is built." ON)
 option(MATERIALX_INSTALL_RESOURCES "Install the resources folder when building render modules." ON)
+option(MATERIALX_TEST_RENDER "Run rendering tests for MaterialX Render module. GPU required for graphics validation." ON)
 option(MATERIALX_WARNINGS_AS_ERRORS "Interpret all compiler warnings as errors." OFF)
+option(MATERIALX_DYNAMIC_ANALYSIS "Build MaterialX libraries with dynamic analysis on supporting platforms." OFF)
+option(MATERIALX_OSL_LEGACY_CLOSURES "Build OSL shader generation supporting the legacy OSL closures." ON)
+
+option(MATERIALX_BUILD_IOS "Build the MaterialX for iOS." OFF)
+if (MATERIALX_BUILD_IOS)
+    set(CMAKE_SYSTEM_NAME iOS)
+    add_definitions(-DTARGET_OS_IOS=1)
+    set(MATERIALX_BUILD_PYTHON        OFF)
+    set(MATERIALX_BUILD_VIEWER        OFF)
+    set(MATERIALX_BUILD_GRAPH_EDITOR  OFF)
+    set(MATERIALX_BUILD_GEN_GLSL      OFF)
+    set(MATERIALX_BUILD_GEN_OSL       OFF)
+    set(MATERIALX_BUILD_GEN_GLSL      OFF)
+    set(MATERIALX_BUILD_GEN_MDL       OFF)
+    set(MATERIALX_BUILD_OIIO          OFF)
+    set(MATERIALX_PYTHON_LTO          OFF)
+    set(MATERIALX_INSTALL_PYTHON      OFF)
+    set(MATERIALX_DYNAMIC_ANALYSIS    OFF)
+    set(MATERIALX_DYNAMIC_ANALYSIS    OFF)
+    set(MATERIALX_OSL_LEGACY_CLOSURES OFF)
+    set(MATERIALX_BUILD_TESTS         OFF)
+    set(MATERIALX_TEST_RENDER         OFF)
+endif()
 
 set(MATERIALX_PYTHON_VERSION "" CACHE STRING
     "Python version to be used in building the MaterialX Python package (e.g. '3.9').")