When you build software on SLES, if there is no need RPM provided, you can try to download it from OpenSuse website:https://software.opensuse.org/search . E.g.:
# rpmbuild -bp xen.spec
error: Failed build dependencies:
figlet is needed by xen-4.5.1_10-1.9.x86_64
When build Xen source code, the SLES doesn’t provide figlet RPM. Download and install this RPM from this link:http://download.opensuse.org/repositories/openSUSE:/13.2/standard/x8664/figlet-2.2.4-12.1.5.x8664.rpm. Then it works!