cross compiling fixes

CMakeLists.txt

@@ -39,6 +39,10 @@ else()
 endif()
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL Windows)
+  if(${CMAKE_CROSSCOMPILING})
+    message(STATUS "DirectWrite support has been enabled")
+    option(MW_USE_DIRECTWRITE "Use DirectWrite" ON)
+  else()
     # DirectWrite stuff can only be used on Win10+
     if(${CMAKE_SYSTEM_VERSION} GREATER_EQUAL 10)
       message(STATUS "DirectWrite support has been enabled")
@@ -48,6 +52,7 @@ if(${CMAKE_SYSTEM_NAME} STREQUAL Windows)
       option(MW_USE_DIRECTWRITE "Use DirectWrite" OFF)
     endif()
   endif()
+endif()
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL Linux OR ${CMAKE_SYSTEM_NAME} STREQUAL FreeBSD)
   option(MW_USE_WAYLAND "Enable Wayland backend" ON)
@@ -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

@@ -5,6 +5,7 @@ file(
 )
 find_package(Vulkan)
 
+if(${Vulkan_FOUND})
   foreach(PATH IN LISTS EXAMPLES_VULKAN_SOURCES)
     get_filename_component(TARGET ${PATH} NAME_WE)
     add_executable(${TARGET} MACOSX_BUNDLE ${PATH})
@@ -26,3 +27,4 @@ foreach(PATH IN LISTS EXAMPLES_VULKAN_SOURCES)
   )
     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>