[Zlib-devel] Building zlib with C++

[Paul Marquess]

The enclosed patch (against 1.2.3.1) makes a few cosmetic changes to the
source to allow zlib to be built with a C++ compiler. 

The changes are

1. Use of ANSI C function definitions
   I've left the old K&R style function definitions in place and made
   the new ANSI C style definitions kick in when the STDC macro 
   is enabled. 

2 Clashes with C++ keywords
  There were quite a few instances of a variable called "this" that 
  clash with the C++ keyword of the same name. I renamed this variable 
  to "this_"

I've tried the enclosed patch with gcc/g++ 3 & 4 and the Sun C and C++
compiler. All worked fine.

Paul
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