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1. What is 'new' EPICS?  

The 'new' version of EPICS is R3-14-12-4_1-0

For this new development, the version of EPICS BASE  = base-R3-14-12-4_1-0.

 When the version of EPICS BASE is selected, that selects the cross-compiler's tool chain.

This means you are now locked into a specific tool chain that only supports, "RHEL6 64-bit"

So, in terms of development unless you have your own RHEL6 64-bit workstation setup properly; always log into  lcls-dev3.

More about the make process and cross compilers for targets explained under Question 6.

Next, to make sure that your ENV is setup for our version of EPICS BASE as explained under Question 2.

source   /afs/slac/g/lcls/epics/setup/go_epics_3-14-12-4_1-0.bash

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First a note of CAUTION:

This project does not and will not support RHEL5 32-bit hosts

After the summer 2015 downtime, Jingchen will have fully migrated to RHEL6 64-bit.

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