Failed to build openBLAS

[Dushyant]

I'm using cygwin in windows 7(64 bit) and it gives error="Failed to build openBLAS"
Here's what I did:

Dushyant@Dushyant-PC ~
$ cd D:

Dushyant@Dushyant-PC /cygdrive/d
$ cd softwares/sdk/caffe-android-lib

Dushyant@Dushyant-PC /cygdrive/d/softwares/sdk/caffe-android-lib
$ export NDK_ROOT=D:\Softwares\Sdk\androidsdk\ndk-bundle

Dushyant@Dushyant-PC /cygdrive/d/softwares/sdk/caffe-android-lib
$ export ANDROID_ABI="x86_64"

Dushyant@Dushyant-PC /cygdrive/d/softwares/sdk/caffe-android-lib
$ ./build.sh NDK_ROOT
: invalid optionopenblas.sh: line 2: set: -
set: usage: set [-abefhkmnptuvxBCHP] [-o option-name] [--] [arg ...]
Failed to build OpenBLAS