OpenSuse Build Service (OBS)

http://build.opensuse.org/

First, you need to get account. And then, you can create an a project/package to build. Take helloworld project for example, add a package "helloworld", and choose the "build repository".



Then, go into the package helloworld to add files(hello-2.4.tar.gz & hello.spec)



And then, you can "trigger rebuild" and using "reload status" icon to update the status. If the build succeeded, it will generate the rpm and src.rpm.