How to make .zip compatible with precomp?

[Bulat Ziganshin]

what programs can be used to make archives recompressible with precomp/antiz?

[Matt Mahoney]

unzip and zip again?

[Bulat Ziganshin]

i tried zip 3.0 (jul 5 2008 ) with precomp 0.4.2/0.4.3 on a 4 mb file and both combinations failed. afaik, the program should use zlib comptaible with zlib used in precomp so 7-zip, freearc and afaik rar will fail too

[Skymmer]

Or even unzip and then zip with no compression so precomp\antiz will not be needed

[Simon Berger]

Guess this is what you are looking for:

http://www.winimage.com/zLibDll/minizip.html

This could / should work too because it is based on minizip.
http://quazip.sourceforge.net/index.html