Windows software requires Windows libraries, Mingw is looking for a cross-compiled Zlib that you need to create yourself:
- Download zlib source
- PREFIX win32/Makefile.gcc. 32- :
PREFIX = i686-w64-mingw32-
- configure! ( "i686-w64-mingw32" , /usr ):
BINARY_PATH=/usr/i686-w64-mingw32/bin INCLUDE_PATH=/usr/i686-w64-mingw32/include LIBRARY_PATH=/usr/i686-w64-mingw32/lib make -f win32/Makefile.gcc
BINARY_PATH=/usr/i686-w64-mingw32/bin INCLUDE_PATH=/usr/i686-w64-mingw32/include LIBRARY_PATH=/usr/i686-w64-mingw32/lib make -f win32/Makefile.gcc install
- zlib, Mingw. x64 PREFIX ( ) : x86_64-w64-mingw32 i686-w64-mingw32.
: https://wiki.openttd.org/Cross-compiling_for_Windows#Compiling_zlib