wine 32 on 64 slack freetype touble

Missing freetype development files when try to compile wine 32 on 64 bit slack.

on my case:

less config.log

error in:

 configure:12631: freetype2 cflags: -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include

Error was missing function in zlib called from: libpng16

i just update zlib to last version and everything goes ok.

P.S.
I use 64 bit slackware with multilib
so i upgrade with:

convertpkg-compat32 -i zlib-1.2.11-i586-1.txz
upgradepkg /tmp/zlib-compat32-1.2.11-x86_64-1compat32.txz