Gradle issues with android support compilation in Unity export - unity3d

Question

I have a multidex issue while compiling my project in Unity so I exported the project and imported it to gradle. I've fixed most dependencies but I cannot get rid of the following problem:
FAILURE: Build failed with an exception.
12:05:17.012 [ERROR] [org.gradle.BuildExceptionReporter]
12:05:17.012 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:
12:05:17.012 [ERROR] [org.gradle.BuildExceptionReporter] Execution failed for task ':mainProj:transformClassesWithJarMergingForRelease'.
12:05:17.012 [ERROR] [org.gradle.BuildExceptionReporter] > com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: android/support/compat/BuildConfig.class
12:05:17.012 [ERROR] [org.gradle.BuildExceptionReporter]
and that goes to all support* projects. I had similar issues with other sdks but I fixed them by deleting the BuildConfig.class from their classes.jar files. For some reason, when I delete this class for the supportcompat2500 project (in this specific example) it keeps coming back - and I don't know where from.
my settings.gradle is:
include ':amazonAppStore'
include ':appLovin'
include ':chartboost'
include ':googleAIDL'
include ':googlePlay'
include ':heyzap'
include ':oneSignalConfig'
include ':samsungApps'
include ':shortcutBadger115'
include ':unityAds'
include ':vungle'
include ':animatedvectordrawable2500'
include ':cardviewv72340'
include ':common'
include ':customtabs2340'
include ':facebookandroidsdk4170'
include ':facebookandroidwrapper790'
include ':onesignalunity'
include ':playservicesads980'
include ':playservicesadslite980'
include ':playservicesbase980'
include ':playservicesclearcut980'
include ':playservicesgass980'
include ':playservicesgcm980'
include ':playservicesiid980'
include ':playserviceslocation980'
include ':playservicestasks980'
include ':supportcompat2500'
include ':supportcoreui2500'
include ':supportcoreutils2500'
include ':supportfragment2500'
include ':supportmediacompat2500'
include ':supportv42500'
include ':supportvectordrawable2500'
include ':mainProj'
mainProj.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 24
buildToolsVersion "24.0.3"
defaultConfig {
applicationId "com.mainProj.mainProj"
minSdkVersion 15
targetSdkVersion 24
// Enabling multidex support.
multiDexEnabled true
}
lintOptions {
quiet true
abortOnError false
ignoreWarnings true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
sourceSets {
main {
manifest.srcFile 'src/main/AndroidManifest.xml'
java.srcDirs = ['src/main/java.com.mainProj.mainProj']
resources.srcDirs = ['src/main/res']
renderscript.srcDirs = ['src']
res.srcDirs = ['src/main/res']
assets.srcDirs = ['src/main/assets.bin.Data']
jniLibs.srcDirs = ['src/main/jniLibs']
}
debug.setRoot('build-types/debug')
release.setRoot('build-types/release')
}
}
dependencies {
compile 'com.android.support:multidex:1+'
compile fileTree(dir: 'libs', include: '*.jar')
compile project(':amazonAppStore')
compile project(':appLovin')
compile project(':chartboost')
compile project(':googleAIDL')
compile project(':googlePlay')
compile project(':cardviewv72340')
compile project(':customtabs2340')
compile project(':heyzap')
compile project(':oneSignalConfig')
compile project(':samsungApps')
compile project(':shortcutBadger115')
compile project(':unityAds')
compile project(':vungle')
compile project(':common')
compile project(':facebookandroidsdk4170')
compile project(':facebookandroidwrapper790')
compile project(':onesignalunity')
compile project(':playservicesads980')
compile project(':playservicesadslite980')
compile project(':playservicesbase980')
compile project(':playservicesclearcut980')
compile project(':playservicesgass980')
compile project(':playservicesgcm980')
compile project(':playservicesiid980')
compile project(':playserviceslocation980')
compile project(':playservicestasks980')
compile project(':supportcompat2500')
compile project(':supportcoreui2500')
compile project(':supportcoreutils2500')
compile project(':supportfragment2500')
compile project(':supportmediacompat2500')
compile project(':supportv42500')
compile project(':supportvectordrawable2500')
}
Project gradle:
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
}
}
allprojects {
repositories {
jcenter()
}
}
Would appreciate any advice/referenece. Thanks.

Answer 1

The problem was that
facebookandroidwrapper790
already include com.android.support and all of its sub-projects.
I've removed all
compile project(':support*')