title: Build issue when using prebuilt libraries with the Android NDK
body: <p>I have a program I am porting that links together multiple libraries when creating the executable.  I have built all those libraries using the stand alone toolchain and using the standalone toolchain I am able to create an executable that works on an android device.  So, it seems like the libraries I have built are functional.  Now I am trying to incorporate those libraries with an app.  So, in my android.mk I have something like this:</p>
  
  <pre><code>LOCAL_PATH := $(call my-dir)
  ROOT_PATH := $(LOCAL_PATH)
  
  include $(call all-subdir-makefiles)
  include $(CLEAR_VARS)
  
  LOCAL_PATH = $(ROOT_PATH)
  
  LOCAL_MODULE    := test-libs
  
  LOCAL_STATIC_LIBRARIES := staticA
  LOCAL_SHARED_LIBRARIES := sharedA sharedB sharedC sharedD
  LOCAL_SRC_FILES := test-libs.c
  
  include $(BUILD_SHARED_LIBRARY)
  </code></pre>
  
  <p>For each of the libraries, I have a Android.mk like this</p>
  
  <pre><code>LOCAL_PATH := $(call my-dir)
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE := sharedA
  
  LOCAL_SRC_FILES := sharedA.so
  
  include $(PREBUILT_SHARED_LIBRARY)
  </code></pre>
  
  <p>When I then build my project (in eclipse), I get this:</p>
  
  <pre><code>C:/ndk/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/../lib/gcc/arm-linux-androideabi/4.4.3/libgcc.a(unwind-arm.o): In function `__gnu_unwind_pr_common':
  /cygdrive/c/ndk/android-ndk-r7b/build/core/build-binary.mk:314: recipe for target `obj/local/armeabi/libtest-libs.so' failed
  /tmp/ndk-digit/src/build/../gcc/gcc-4.4.3/libgcc/../gcc/config/arm/unwind-arm.c:1237: undefined reference to `__cxa_call_unexpected'
  </code></pre>
  
  <p>Any thoughts on what is going wrong?</p>
  
  <p>Also, the static library and one of the shared libraries have no dependencies on anything and if I only include them all is cool.  One of my shared libraries only had a dependency on the static library.  If I only include those, but when I include the others, which have dependencies on other shared libraries, this problem occurs.   </p>
  
  <p>Update 1:  Ok it appears to be because the APP_STL setting in my Application.mk was being ignored.  All I have in my Application.mk is:
      APP_STL := gnustl_shared
  If I copy over the libgnustl_shared.so and treat it like another prebuilt shared lib, my problem is gone.  Any idea why the APP_STL is not working properly.  Note, I could have screwed something up.  I just upgraded to using 7b.  Using gnustl_shared used to work for me with other apps.  Rolling back to 7 doesn't fix it.  I think I have messed something up in Eclipse.  I use Eclipse (windows) with sequoyah.  </p>