[Devel] use of zlib

[Jacob (=Jouk) Jansen]

Hi All,

in src/gzip/ftgzip.c it is stated :
#  if 1  /* we choose to include directly the zlib sources in this component */
         /* this is done to avoid ugly library dependencies                  */


This statement is rather taste/system dependend. The solution chosen here
is quite ugly for OpenVMS: when you try to use the freetype2 library in one
program together with code where the original zlib is required one get a lot
of warnings about externals which are multiple defined in the libraries.
Ofcourse one can solve it by "prefix" all the zlib routines in ft's zlib.
However : -the list in zconf.h is not complete and has to maintained every
            time zlib is upgraded.
          -the executables become larger since much code is included twice,
            without any gain in performance.
            

I personally do not like to have the same sources in different locations. So
let the people of ZLIB maintain their part and have it as dependency.


For the moment I propose to have a preprocessor directive which indicates
if the original- or the FT-zlib should be used. In order to have the compiler
including the right *.h files, all the "zlib-originals" should be in their
own directory in which ftgzip.c is NOT located.

                 Jouk
          


Bush : All votes are equal but some votes are more equal than others.

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