title: andEngine Android-Studio linker Error during Build
body: <p>I took the source of AndEngine from their git repo, downloaded a fresh AndroidStudio, sdk and ndk,imported it, and tried to creat a simple new empty GameActivity extends BaseGameActivity.</p>
  
  <p>But I could not start it, cause I get the following errors:</p>
  
  <pre><code>/home/uhu/android-ndk-r9d/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/objs/andengine_shared//home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.o: in function Java_org_andengine_opengl_GLES20Fix_glVertexAttribPointer:/home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.c:9: error: undefined reference to 'glVertexAttribPointer'
  
  /home/uhu/android-ndk-r9d/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/objs/andengine_shared//home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.o: in function Java_org_andengine_opengl_GLES20Fix_glDrawElements:/home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.c:13: error: undefined reference to 'glDrawElements'
  
  Error:Execution failed for task ':andEngine:compileReleaseNdk'.
  </code></pre>
  
  <blockquote>
    <p>com.android.ide.common.internal.LoggedErrorException: Failed to run command:
        /home/uhu/android-ndk-r9d/ndk-build NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/Android.mk APP_PLATFORM=android-15 NDK_OUT=/home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/obj NDK_LIBS_OUT=/home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/lib APP_ABI=all
      Error Code:
        2
      Output:
        /home/uhu/android-ndk-r9d/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/objs/andengine_shared//home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.o: in function Java_org_andengine_opengl_GLES20Fix_glVertexAttribPointer:/home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.c:9: error: undefined reference to 'glVertexAttribPointer'
        /home/uhu/android-ndk-r9d/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/objs/andengine_shared//home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.o: in function Java_org_andengine_opengl_GLES20Fix_glDrawElements:/home/uhu/AndroidStudioProjects/aaa/andEngine/src/main/jni/src/GLES20Fix.c:13: error: undefined reference to 'glDrawElements'
        collect2: ld returned 1 exit status
        make: <em>*</em> [/home/uhu/AndroidStudioProjects/aaa/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/libandengine_shared.so] Error 1</p>
  </blockquote>
  
  <p>Does anyone know how to fix this? Or if I'm just using the wrong tools, what can you recommend?</p>