Make sure the zlib cmake do not pollute the working directly.

[lygstate]

[praiskup]

s/directly/directory/? Yes:

chmod -R -w .
cd ..
mkdir builddir && cd builddir
cmake ../zlib
...
CMake Error at CMakeLists.txt:77 (file):
  file RENAME failed to rename

    /tmp/zlib/zconf.h

  to

    /tmp/zlib/zconf.h.included

  because: Permission denied

[praiskup]

However reading FAQ:

 7. Why don't you use GNU autoconf or libtool or ...?

    Because we would like to keep zlib as a very small and simple package.
    zlib is rather portable and doesn't need much configuration.

I doubt cmake is needed at all.

[lygstate]

@praiskup Under win32, cmake is far more better usable than autoonf or libtool

[praiskup]

@lygstate that's possible, I'm not able to confirm though. What I tried to say is, when autotools are not needed, most probably neither cmake is.

[BusyJay]

+1 for this. I have a project include zlib as submodule. Every time I build my project, it will show that the zlib submodule is in dirty state, which is very annoying.