Simplify DynamicLoader for iOS by using _HPP_VULKAN_LIBRARY define

bldsys/cmake/global_options.cmake

@@ -75,6 +75,9 @@ if(APPLE)
 		else()
 			message(FATAL_ERROR "Can't find MoltenVK library. Please install the Vulkan SDK or MoltenVK project and set VULKAN_SDK.")
 		endif()
+	elseif(IOS)
+		# if not using MoltenVK on iOS, set up global Vulkan Library define for iOS Vulkan loader
+		add_compile_definitions(_HPP_VULKAN_LIBRARY="vulkan.framework/vulkan")
 	endif()
 
 	if(CMAKE_GENERATOR MATCHES "Xcode")

framework/vulkan_sample.h

@@ -27,10 +27,6 @@
 #include "scene_graph/hpp_scene.h"
 #include "scene_graph/scripts/animation.h"
 
-#if defined(PLATFORM__MACOS)
-#	include <TargetConditionals.h>
-#endif
-
 namespace vkb
 {
 /**
@@ -1010,8 +1006,6 @@ inline bool VulkanSample<bindingType>::prepare(const ApplicationOptions &options
 	// initialize C++-Bindings default dispatcher, first step
 #if defined(_HPP_VULKAN_LIBRARY)
 	static vk::DynamicLoader dl(_HPP_VULKAN_LIBRARY);
-#elif TARGET_OS_IPHONE
-	static vk::DynamicLoader dl("vulkan.framework/vulkan");
 #else
 	static vk::DynamicLoader dl;
 #endif

samples/api/hpp_hello_triangle/hpp_hello_triangle.cpp

@@ -24,10 +24,6 @@
 #include <hpp_glsl_compiler.h>
 #include <platform/window.h>
 
-#if defined(PLATFORM__MACOS)
-#	include <TargetConditionals.h>
-#endif
-
 // Note: the default dispatcher is instantiated in hpp_api_vulkan_sample.cpp.
 //			 Even though, that file is not part of this sample, it's part of the sample-project!
 
@@ -427,8 +423,6 @@ vk::Instance HPPHelloTriangle::create_instance(std::vector<const char *> const &
 {
 #if defined(_HPP_VULKAN_LIBRARY)
 	static vk::DynamicLoader dl(_HPP_VULKAN_LIBRARY);
-#elif TARGET_OS_IPHONE
-	static vk::DynamicLoader dl("vulkan.framework/vulkan");
 #else
 	static vk::DynamicLoader dl;
 #endif