Hello,

My development project's software must run on multiple Redhat-based platforms (All the FedoraCore series, Redhat Enterprise Linux/Centos 4.x and 3.x, possibly Redhat 9). I want to build as few binary flavors as possible. My best scenario would find us building one binary that works on all these platforms.

Is this possible? If not, can I build fewer binary packages then number of platforms, and if so, which build systems should I build on?

Fyi, our software uses SystemV message queues extensively...in case this happens to be system-dependent.

-Matt

Yes, it is possible, assuming it is always i386 hardware. Build it for i386 with no hardware optmization and statically link it. Or make sure the dependencies will always be available and statically link those that won't.

Do some platforms (eg, CentOS 3.x, FC-1, RH9) provide a better environment then others to make this build? Also, is the i386 a gcc switch option (I'm the manager of a development group, wanted to give my developers specific options).

I'm also curious if I can somehow get an official word on Redhat about this. Any recommendations on how I can go about getting this?

fyi, We'll definitely control the libraries appropriately (static linking, dependency control, etc).

-Matt

I honestly have no idea about an official word from RH on this. I would make sure to use gcc-3.3, not 4.0 (4.0 is still a bit weird on some things). I think you can use "-march=i386" to make sure everything will run on all platforms, but gcc does most of it by default. Also, make sure you keep your optmization levels down to -O2 or lower... -O3 does some weird things on sub-Pentium systems (if you really care about them).