Download the BIRT SDK using the same page from which you downloaded the working version of BIRT. The SDK archive is in the section labeled BIRT SDK. The archive file has a name similar to birt‑report‑framework‑sdk‑4_3_1.zip. Extract the archive into a directory.

Typically, you use a workspace for BIRT source code that is separate from workspaces used for report development. A separate workspace is not required, but keeps your report workspace less cluttered. If your workspace contains source code from a BIRT build that is not the same as the plug-ins in your Eclipse home directory, Eclipse runs BIRT using the source code in preference to the plug‑ins from the Eclipse home directory.