How to add C++ macro define for android packaging

dawnarc · February 24, 2016, 1:36pm

first I add a macro define in Android.mk file (path is: \Epic Games\4.11\Engine\Build\Android\Java\jni\Android.mk):
LOCAL_CFLAGS += -D_ANDROID_

then I add a macro is my c++ code and use it for logic code:

#ifdef _ANDROID_

#define STRLEN_SAFE(dest, src, len) strncpy(dest, src, len)

#endif

but when I packing my project for android, an error shows in console:

error: use of undeclared identifier 'STRLEN_SAFE’

dawnarc · February 24, 2016, 2:00pm

by the way, even I add a macro in visual studio, but it has no effect. the compile warning would show again. my VS is 2015.

bonus_uk · February 25, 2016, 3:36am

You can use OutCPPEnvironmentConfiguration.Definitions.Add in your Target.cs file.

An example:

https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Programs/ShaderCompileWorker/ShaderCompileWorker.Target.cs

dawnarc · February 25, 2016, 7:14am

thx for your suggestion, but it doesn’t work at all. this is my code:

even I add #define _CRT_SECURE_NO_WARNINGS in cpp file, it also doesn’t work. this’s the same problem with me:
[link text][2]

dawnarc · March 11, 2016, 2:37pm

I found the solution for latest UE4 version, define your macros in the constructor of MyProject.Build.cs ,like this:

public class MyProj : ModuleRules  
{  
    public MyProj(TargetInfo Target)  
    {  
        PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "UMG", "Slate", "SlateCore" });  
        PrivateDependencyModuleNames.AddRange(new string[] {  });  
  
  
        Definitions.Add("_CRT_SECURE_NO_WARNINGS");  
    }  
}

also can see example here:

https://github.com/monsieurgustav/UE4-OSC/blob/master/OSC/Source/OSC/OSC.Build.cs