How can i install src.rpm package on Red hat Linux ?
Installing a src.rpm is very much like unpacking the source code of a program. If you run (as yourself) :
You will see the source installed under your home under a rpm tree:
You will find a spec file telling how the rpm is built. You will find one or more files needed to build the RPM under the SOURCES directory.
You will also see
The BUILD dir is used when the rpm is rebuilt. The final RPM gets written under the appropriate RPMS subdirectory.
The interest of installing a src.rpm is to modify and rebuild it. But if the source you need already contains spec file to build the rpm, it's better downloading the source and building the rpm from it when you so desire:
You can find more information on rebuilding srpms here: http://superuser.com/questions/61876/how-to-unpacks-and-rebuild-rpm-package-on-fedora
Then install the resulting binary package(s).
Here's a short article I wrote on this, way back when Redhat was at 6.2: