title: ltrace for Android build
body: <p>guys. I'm trying to buidl ltrace for Android from this repo <a href="https://android.googlesource.com/platform/external/ltrace/" rel="nofollow">https://android.googlesource.com/platform/external/ltrace/</a> .
  So i've installed android-ndk, then i've done everything like in android manual for using standalone toolchain for arm and android-16 (<a href="https://developer.android.com/ndk/guides/standalone_toolchain.html" rel="nofollow">https://developer.android.com/ndk/guides/standalone_toolchain.html</a> Advanced method from here).
  Then i've cloned the repo and in root directory run ./autogen.sh . 
  After that ./configure -host=arm-linux .
  And i've received an error:
  "configure: error: *** libelf.h or gelf.h not found on your system"</p>
  
  <p>So it's look like i need include libelf from /platform/external/elfutils(also android source code) .
  But i haven't got any idea how to do that, this repo contains only Android.mk, and i don't know how to build it with ndk-build. 
  It gives me an error, that i haven't var NDK_PROJECT_PATH, but after i have set it, project haven't build too.</p>
  
  <p>Can anybody help ? </p>