OpenCV for Android build under Eclipse

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I am trying to build OpenCV4Android using Eclipse (Juno) under Windows7 using:

1- android-ndk-r8d 2- JDK (jdk1.7.0_11)

I repeatedly receive the following error:

Invoking autoreconf in build directory: D:/Work/OpenCV4Android/OpenCV-2.4.3.2-android-sdk/samples/tutorial-1-addopencv sh -c "autoreconf -i" /usr/bin/sh: autoreconf: command not found Configuration failed with error

Thanks