lavapipe: add dll definition file instead of using PUBLIC

This avoids conflicts with the definitions in vk_icd.h

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9208>

src/gallium/frontends/lavapipe/lvp_device.c

@@ -711,6 +711,12 @@ VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL lvp_GetInstanceProcAddr(
                                     pName);
 }
 
+/* Windows will use a dll definition file to avoid build errors. */
+#ifdef _WIN32
+#undef PUBLIC
+#define PUBLIC
+#endif
+
 /* The loader wants us to expose a second GetInstanceProcAddr function
  * to work around certain LD_PRELOAD issues seen in apps.
  */

src/gallium/targets/lavapipe/meson.build

@@ -1,6 +1,7 @@
 libvulkan_lvp = shared_library(
   'vulkan_lvp',
   [ 'target.c' ],
+  vs_module_defs : 'vulkan_lvp.def',
   include_directories : [ inc_src, inc_util, inc_include, inc_gallium, inc_gallium_aux, inc_gallium_winsys, inc_gallium_drivers ],
   link_whole : [ liblavapipe_st ],
   link_with : [libpipe_loader_static, libgallium, libwsw, libswdri, libws_null, libswkmsdri ],

src/gallium/targets/lavapipe/vulkan_lvp.def

@@ -0,0 +1,4 @@
+EXPORTS
+vk_icdNegotiateLoaderICDInterfaceVersion
+vk_icdGetInstanceProcAddr
+vk_icdGetPhysicalDeviceProcAddr