[odb-users] gcc plugin support on RHEL/CentOS 5 and 6?

[Boris Kolpackov]

Hi Dave,

Dave Johansen <davejohansen at gmail.com> writes:

> Does anyone know if it's possible to enable or install plugin support on
> RHEL/CentOS 5 and 6? I would like to build and install odb on RHEL/CentOS 5
> and 6, but I haven't been able to figure out how to get plugin support
> working with gcc.

Just to clarify a few things, only the ODB compiler requires plugin
support and can only be built with GCC 4.5.0 or later. On the other
hand, the ODB runtimes (i.e., libodb, libodb-<db>), examples, etc.,
can all be built with earlier versions of GCC.

I've done some research I it doesn't seem there is packaged GCC 4.5.0
or later for either RHEL/CentOS 5 or 6. They both seem to come with
GCC 4.4.X.

So your options are (from easier to more difficult):

1. Download the pre-built ODB compiler (the odb-X.Y.Z-<arch>-linux-gnu
   package). It includes a private copy of GCC with plugin support so all
   you have to do is download, unpack, and it is ready to go.

   In this setup you would use the stock GCC that comes with RHEL/CentOS
   to build the rest of the ODB (i.e., libodb, etc) as well as your
   application.

2. Build and install GCC 4.5.0 or later from source yourself. There
   are quite a few guides on the net that explain how to do this. To
   enable plugins you would add the --enable-plugin configure option.

   Once this is done you can then build the ODB compiler from source
   using this new GCC version.

Note also that once RHEL/CentOS 7 is out (presumably with GCC 4.5.0
or later), building ODB from source will become much easier. All you
will have to do is install the plugin support from the repository
(yum install gcc-plugin-devel). That's how it works on Fedora.

Boris