Unity3D 系统宏

Platform Defines

The platform defines that Unity supports for your scripts are:

Property:	Function:
UNITY_EDITOR	#define directive for calling Unity Editor scripts from your game code.
UNITY_EDITOR_WIN	#define directive for Editor code on Windows.
UNITY_EDITOR_OSX	#define directive for Editor code on Mac OSX.
UNITY_STANDALONE_OSX	#define directive for compiling/executing code specifically for OS X (including Universal, PPC and Intel architectures).
UNITY_STANDALONE_WIN	#define directive for compiling/executing code specifically for Windows standalone applications.
UNITY_STANDALONE_LINUX	#define directive for compiling/executing code specifically for Linux standalone applications.
UNITY_STANDALONE	#define directive for compiling/executing code for any standalone platform (OS X, Windows or Linux).
UNITY_WII	#define directive for compiling/executing code for the Wii console.
UNITY_IOS	#define directive for compiling/executing code for the iOS platform.
UNITY_IPHONE	Deprecated. Use UNITY_IOS instead.
UNITY_ANDROID	#define directive for the Android platform.
UNITY_PS3	#define directive for running PlayStation 3 code.
UNITY_PS4	#define directive for running PlayStation 4 code.
UNITY_SAMSUNGTV	#define directive for executing Samsung TV code.
UNITY_XBOX360	#define directive for executing Xbox 360 code.
UNITY_XBOXONE	#define directive for executing Xbox One code.
UNITY_TIZEN	#define directive for the Tizen platform.
UNITY_TVOS	#define directive for the Apple TV platform.
UNITY_WP_8	#define directive for Windows Phone 8.
UNITY_WP_8_1	#define directive for Windows Phone 8.1.
UNITY_WSA	#define directive for Windows Store Apps. Additionally, NETFX_CORE is defined when compiling C# files against .NET Core.
UNITY_WSA_8_0	#define directive for Windows Store Apps when targeting SDK 8.0.
UNITY_WSA_8_1	#define directive for Windows Store Apps when targeting SDK 8.1.
UNITY_WSA_10_0	#define directive for Windows Store Apps when targeting Universal Windows 10 Apps. Additionally WINDOWS_UWP and NETFX_CORE are defined when compiling C# files against .NET Core.
UNITY_WINRT	Equivalent to UNITY_WP_8 | UNITY_WSA.
UNITY_WINRT_8_0	Equivalent to UNITY_WP_8 | UNITY_WSA_8_0.
UNITY_WINRT_8_1	Equivalent to UNITY_WP_8_1 | UNITY_WSA_8_1. This is also defined when compiling against Universal SDK 8.1.
UNITY_WINRT_10_0	Equivalent to UNITY_WSA_10_0
UNITY_WEBGL	#define directive for WebGL.
UNITY_ADS	#define directive for calling Unity Ads methods from your game code. Version 5.2 and above.
UNITY_ANALYTICS	#define directive for calling Unity Analytics methods from your game code. Version 5.2 and above.
UNITY_ASSERTIONS	#define directive for assertions control process.

Also you can compile code selectively depending on the version of the engine you are working on. Currently the supported ones are:

UNITY_2_6	Platform define for the major version of Unity 2.6.
UNITY_2_6_1	Platform define for specific version 1 from the major release 2.6.
UNITY_3_0	Platform define for the major version of Unity 3.0.
UNITY_3_0_0	Platform define for the specific version 0 of Unity 3.0.
UNITY_3_1	Platform define for major version of Unity 3.1.
UNITY_3_2	Platform define for major version of Unity 3.2.
UNITY_3_3	Platform define for major version of Unity 3.3.
UNITY_3_4	Platform define for major version of Unity 3.4.
UNITY_3_5	Platform define for major version of Unity 3.5.
UNITY_4_0	Platform define for major version of Unity 4.0.
UNITY_4_0_1	Platform define for major version of Unity 4.0.1.
UNITY_4_1	Platform define for major version of Unity 4.1.
UNITY_4_2	Platform define for major version of Unity 4.2.

最新Unity3D系统宏地址：http://docs.unity3d.com/Documentation/Manual/PlatformDependentCompilation.html