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Forked from Iris / Iris
7497 commits behind the upstream repository.
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Robbert Krebbers authored
This way we avoid many one-off indexes and no longer need special cases for
index 0 in many definitions. For example, the definition of the distance
relation on option and excl has become much easier. Also, uPreds no longer need
to hold at index 0.

In order to make this change possible, we had to change the notions of
"contractive functions" and "chains" slightly.

Thanks to Aleš Bizjak and Amin Timany for suggesting this change and to help
with the proofs.
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PREREQUISITES
-------------

This version is known to compile with:

 - Coq 8.5
 - Ssreflect 1.6

For development, better make sure you have a version of Ssreflect that includes
commit be724937 (no such version has been released so far, you will have to
fetch the development branch yourself). Iris compiles fine even without this
patch, but proof bullets will only be in 'strict' (enforcing) mode with the
fixed version of Ssreflect.
 
BUILDING INSTRUCTIONS
---------------------

Run the following commands to build the full development:

  ./configure
  make