title: Setting environment variables in Eclipse to use with Android NDK
body: <p>I use Android NDK with cygwin with Eclipse on Windows.
  In my makefile I want to set path of prebuild library using environment variable in eclipse.
  So I do the following:</p>
  <p><img src="https://i.stack.imgur.com/csfgv.png" alt="enter image description here" /></p>
  <p>And in makefile:</p>
  <pre><code>LOCAL_SRC_FILES = $(QCAR_SDK_ROOT)build/lib/$(TARGET_ARCH_ABI)/libQCAR.so
  LOCAL_EXPORT_C_INCLUDES := $(QCAR_SDK_ROOT)build/include
  </code></pre>
  <p>But I get error:</p>
  <pre><code>Android NDK: ERROR:jni/Android.mk:QCAR-prebuilt: LOCAL_SRC_FILES points to a missing file    
  /cygdrive/d/Development/Android/android-ndk-r7/build/core/prebuilt-library.mk:43: *** Android NDK: Aborting    .  Stop.
  make: *** [all] Error 2
  Android NDK: Check that jni//cygdrive/D/Development/Android/qcar-android-1-5-4-beta1/build/lib/armeabi/libQCAR.so exists  or that its path is correct   
  </code></pre>
  <p>Tried defining variable in makefile directly, got the same result.</p>
  <p>So, obviously, that path is not what I wanted. How do I set the proper path?</p>