Description of problem:
The latest version of zlib (1.2.0.7) has a change in zlib.h which results in the
inability to compile R, which is a GPL math/stats application
(http://www.r-project.org).

The change is on lines 31 and 32 of zlib.h where _ZLIB_H has been changed to
ZLIB_H (note the dropping of the initial '_').

One of R's header files checks for the presence of _ZLIB_H as part of a
conditional compilation check. The change in the DEFINE causes R's compilation
to break since the check fails.

A note has been posted to the zlib.org developers for follow up on this change.
Based upon that feedback, comments will be sent to the R Core developers with
recommendations for any changes required.


Version-Release number of selected component (if applicable):
zlib-devel-1.2.0.7-1.i386.rpm

How reproducible:
Every time

Steps to Reproduce:
1. ./configure
2. make
3.
    
Actual results:
R's compilation stops when the expected DEFINE is not found

Expected results:
Full compilation

Additional info:
It is likely that no changes will be required on this from the Fedora developers
and that the likely change will be required on the R side, pending feedback from
zlib.org.

Thanks.

Marc Schwartz