meson: fix and enable win32 ecore-evas engine build

these defines must be set in order to provide the expected engine functionality

Reviewed-by: Marcel Hollerbach <mail@marcel-hollerbach.de>
Differential Revision: https://phab.enlightenment.org/D8733

src/modules/ecore_evas/engines/win32/meson.build

@@ -1,8 +1,13 @@
 engine_src = files(['ecore_evas_win32.c'])
 
+config_h.set('BUILD_ECORE_EVAS_SOFTWARE_DDRAW', '1');
+config_h.set('BUILD_ECORE_EVAS_SOFTWARE_GDI', '1');
+
+engine_deps = [engine_software_ddraw, engine_software_gdi]
+
 shared_module(mod_full_name, engine_src,
   include_directories : config_dir + [engine_include_dir],
-  dependencies : [eina, ecore_evas, ecore_input_evas] + engine_deps,
+  dependencies : [eina, ecore_win32, ecore_input, ecore_evas, ecore_input_evas] + engine_deps,
   install : true,
   install_dir : mod_install_dir,
   name_suffix : sys_mod_extension

src/modules/ecore_evas/meson.build

@@ -4,12 +4,13 @@ engines = [
 ['fb', ['fb']],
 ['sdl', ['sdl']],
 ['wayland', ['wl']],
-#['win32', ['ecore_win32']],
 ['x', ['x11']],
 ]
 
 if sys_windows == false
   engines += [['extn', []]]
+else
+  engines += [['win32', []]]
 endif