Don't build MiniFFI on 64-bit Windows

MiniFFI/Win32API is now optional, and requires
sizeof(void*) == sizeof(long)

binding/meson.build

@@ -29,12 +29,15 @@ binding_source = [files(
     'module_rpg.cpp',
     'filesystem-binding.cpp',
     'windowvx-binding.cpp',
-    'tilemapvx-binding.cpp',
+    'tilemapvx-binding.cpp'
-    'miniffi-binding.cpp'
 )]
 
 if discord == true
     binding_source += files('discord-binding.cpp')
 endif
 
+if miniffi == true
+    binding_source += files('miniffi-binding.cpp')
+endif
+
 global_sources += binding_source

meson.build

@@ -53,6 +53,20 @@ if compilers['objc'].get_id() == 'clang'
     global_args += ['-Wno-undefined-var-template', '-Wno-delete-non-abstract-non-virtual-dtor']
 endif
 
+# Decide whether or not to use MiniFFI
+miniffi = get_option('use_miniffi')
+if miniffi == true
+    if compilers['cpp'].sizeof('void*') == compilers['cpp'].sizeof('long')
+        miniffi = true
+        global_args += '-DUSE_MINIFFI'
+    else
+        warning('64-bit MiniFFI is only supported on Linux and macOS.')
+        warning('To use MiniFFI/Win32API on Windows, target 32-bit.')
+        miniffi = false
+    endif
+endif
+
+# Defines
 if get_option('workdir_current')
     global_args += '-DWORKDIR_CURRENT'
 endif
@@ -61,7 +75,7 @@ if get_option('independent_appimage')
     global_args += '-DINDEPENDENT_APPIMAGE'
 endif
 
-if get_option('use_fakeapi')
+if get_option('use_fakeapi') == true and miniffi == true
     global_args += '-DUSE_FAKEAPI'
 endif
 
@@ -73,6 +87,7 @@ if get_option('mk')
     global_args += '-DMARIN'
 endif
 
+
 # Objectify our C
 global_args += run_command(objfw,'--cppflags').stdout().split()
 add_project_arguments(run_command(objfw,'--objcflags').stdout().split(), language:['objc','objcpp'])

meson_options.txt

@@ -6,7 +6,8 @@ option('macos_min_version', type: 'string', value: '10.10', description: 'Minimu
 
 option('shared_fluid', type: 'boolean', value: false, description: 'Dynamically link fluidsynth at build time')
 option('cjk_fallback_font', type: 'boolean', value: false, description: 'Use WenQuanYi Micro Hei as the fallback font')
-option('use_fakeapi', type: 'boolean', value: false, description: 'Attempt to repair Win32API calls that do not work with MKXP')
+option('use_miniffi', type: 'boolean', value: true, description: 'Enable MiniFFI Ruby module (Win32API)')
+option('use_fakeapi', type: 'boolean', value: false, description: 'Attempt to repair Win32API calls that do not work with MKXP. Requires MiniFFI')
 option('default_framerate', type: 'boolean', value: false, description: 'Disable syncToRefreshrate and fixedFramerate configuration options')
 option('no_preload_scripts', type: 'boolean', value: false, description: 'Disable the preloadScript configuration option')
 option('workdir_current', type: 'boolean', value: false, description: 'Keep current directory on startup')

src/meson.build

@@ -83,7 +83,7 @@ main_source = files(
     'lang-fun.mm'
 )
 
-if get_option('use_fakeapi') == true
+if get_option('use_fakeapi') == true and miniffi == true
     main_source += files('fake-api.mm')
 endif