WDMyCloudEX2100 SDK and toolchain

Could somebody let me know from where I can get the SDK and toolchain for my device WDMyCloudEX2100.
I needed to develop an app for my cloud device but I don’ t see any toolchain and SDK download links.

You need to go back to the WD Community and post your question under the correct sub-forum for Network Attached Storage. You may want to look at this too, http://www.mycloud.com/learn/?id=MyCloudEX2100 .

Try looking at the ‘GPL/Firmware’ section of this page:

There is no information on toolchain in above mentioned links…

I wonder how everybody is compiling source code for mycloud…Surely I am missing some basic information?