Building for more than one host architecture

[jba@aps.anl.gov (Janet B. Anderson)]

In answer to the following comments

>   It would be better to build antelope, e_flex in a pre epics system
> build stage, so that to build any target arch won't depend on the
> host epics system being built.

I think that it's a good idea to have a pre build stage to build the
antelope, e_flex, ... tools, in fact some prebuild facilities already
exist,  but the changes necessary to do this were not included in the
current proposed changes. I have added them to my list of proposed
epics/base enhancements to be done at some later date.



>   I am not sure it is good idea to put all startup files within the 
> epics tree. We don't have to have multiple copies startup files
> for different versions of epicss or epics applications. A soft link
> can point to selected version of epics.

It is true that the startup files should not depend on different versions
of epics, but it is easier for distribution purposes to include them as
a separate directory in the epics tree rather than have two files for
distribution.  Sites should then copy them into a site specific standard
place ( such as /usr/local/epics/startup at APS) for usage.


Janet