CODEWITHSUNDEEP
androidandroid-ndkandroid-gradle-plugin
Brian S
Brian S

Reputation: 3244

How do I set a Preprocessor Definition in Gradle

I apologize if this is a duplicate, but how do I define a preprocessor definition. In Visual Studio I can just go to C++ -> Preprocessor and set a list of definitions there. But I'm struggling with that in my Android gradle build.

I need to define DEBUG, as to satisfy the following condition

#if (!defined(NDEBUG)) && (!defined(DEBUG))

I've tried adding -DDEBUG, but that didn't seem to work. I've struggled finding documentation on what needs to be done.

    cppFlags.addAll(["-fexceptions", "-std=gnu++11", "-DDEBUG"])

Here is my NDK build block // defines the NDK build ndk { moduleName "mymodule"

        toolchain = "clang"

        // If switching to GNU, here are the values to replace with
        stl "gnustl_shared"
        cppFlags.addAll(["-fexceptions", "-std=gnu++11", "-DDEBUG"])


        // when adding system library dependencies, they are added here
        ldLibs.addAll(["log","atomic"])

        // C include directories
        CFlags.addAll(["-I${file("src/main/jni/folder1")}".toString(),
                       "-I${file("src/main/jni/folder2")}".toString()
        ])

        // C++ include directories
        cppFlags.addAll(["-I${file("src/main/jni/morestuff")}".toString(),
        ])
    }

Upvotes: 2

Views: 3265

Answers (1)

nverbeek
nverbeek

Reputation: 1892

It looks like you have both CFlags and cppFlags set. Are you certain you are adding the DEBUG flag to the correct one? If you are dealing with a shared library, it may need your flag in CFlags rather than cppFlags.

I would try adding your DEBUG flag to CFlags and see if that works:

CFlags.addAll(["-DDEBUG"])

Upvotes: 2

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