Error undefined reference to glVertexAttribPointer dalam Android Studio

sourceSets {
    main {
        jni.srcDirs = []
    }
}

apply plugin: 'com.android.library'

android {
    compileSdkVersion 15
    buildToolsVersion "22.0.1"

    defaultConfig {
        minSdkVersion 8
        targetSdkVersion 8

        ndk {
            moduleName "andengine_shared"
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }

    sourceSets {
        main {
            jni.srcDirs = []
        }
    }
}