cross compiling fixes

CMakeLists.txt

@@ -39,13 +39,18 @@ else()
 endif()
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL Windows)
-  # DirectWrite stuff can only be used on Win10+
-  if(${CMAKE_SYSTEM_VERSION} GREATER_EQUAL 10)
+  if(${CMAKE_CROSSCOMPILING})
     message(STATUS "DirectWrite support has been enabled")
     option(MW_USE_DIRECTWRITE "Use DirectWrite" ON)
   else()
-    message(WARNING "DirectWrite support has been disabled (must be compiling on Win10+)")
-    option(MW_USE_DIRECTWRITE "Use DirectWrite" OFF)
+    # DirectWrite stuff can only be used on Win10+
+    if(${CMAKE_SYSTEM_VERSION} GREATER_EQUAL 10)
+      message(STATUS "DirectWrite support has been enabled")
+      option(MW_USE_DIRECTWRITE "Use DirectWrite" ON)
+    else()
+      message(WARNING "DirectWrite support has been disabled (must be compiling on Win10+)")
+      option(MW_USE_DIRECTWRITE "Use DirectWrite" OFF)
+    endif()
   endif()
 endif()
 
@@ -83,8 +88,8 @@ if(MW_TRY_OPENGL)
 endif()
 
 if(MW_TRY_VULKAN)
-  check_include_files(vulkan/vulkan.h HAVE_VULKAN_VULKAN_H)
-  if(HAVE_VULKAN_VULKAN_H)
+  find_package(Vulkan OPTIONAL VULKAN)
+  if(${Vulkan_FOUND})
     set(MW_BUILD_VULKAN ON)
     message(STATUS "Vulkan widget has been enabled")
   else()

examples/vkdemos/CMakeLists.txt

@@ -1,28 +1,30 @@
 file(
-	GLOB
-	EXAMPLES_VULKAN_SOURCES
-	*.c
+ GLOB
+ EXAMPLES_VULKAN_SOURCES
+ *.c
 )
 find_package(Vulkan)
 
-foreach(PATH IN LISTS EXAMPLES_VULKAN_SOURCES)
-	get_filename_component(TARGET ${PATH} NAME_WE)
-	add_executable(${TARGET} MACOSX_BUNDLE ${PATH})
-	target_include_directories(
-		${TARGET}
-		PRIVATE
-		${Vulkan_INCLUDE_DIR}
-	)
-	target_link_libraries(
-		${TARGET}
-		PRIVATE
-		Mw
-	)
-	if(NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
-		target_link_libraries(
-			${TARGET}
-			PRIVATE
-			m
-		)
-	endif()
-endforeach()
+if(${Vulkan_FOUND})
+  foreach(PATH IN LISTS EXAMPLES_VULKAN_SOURCES)
+    get_filename_component(TARGET ${PATH} NAME_WE)
+    add_executable(${TARGET} MACOSX_BUNDLE ${PATH})
+    target_include_directories(
+  ${TARGET}
+  PRIVATE
+  ${Vulkan_INCLUDE_DIR}
+ )
+    target_link_libraries(
+  ${TARGET}
+  PRIVATE
+  Mw
+ )
+    if(NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
+      target_link_libraries(
+   ${TARGET}
+   PRIVATE
+   m
+  )
+    endif()
+  endforeach()
+endif()

examples/vkdemos/vulkan.c

@@ -1,10 +1,3 @@
-
-/**
- * this example is quite minimal, you may need to modify it if your graphics card is more esoteric
- *
- * ioixd maintains this file. nishi doesn't know vulkan at all
- */
-
 #include <Mw/Milsko.h>
 #include <Mw/Widget/Vulkan.h>
 
@@ -264,8 +257,8 @@ void vulkan_setup(MwWidget handle) {
 	swapchainCreateInfo.imageExtent	     = (VkExtent2D){.width = ow, .height = oh},
 	swapchainCreateInfo.imageArrayLayers = 1,
 	swapchainCreateInfo.imageUsage	     = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
-					 VK_IMAGE_USAGE_TRANSFER_DST_BIT |
-					 VK_IMAGE_USAGE_SAMPLED_BIT;
+					       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
+					       VK_IMAGE_USAGE_SAMPLED_BIT;
 	// th is how we specify no transformation.
 	swapchainCreateInfo.preTransform   = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 	swapchainCreateInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;