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zlib is used when available and falls back on gzio. This allows performance improvements as our CRC32 and gzio implementations are slower than base zlib. As zlib is available when libpng is present, this is sensible to benefit from it.
Compiling ScummVM for SEGA Dreamcast ==================================== If you want to compile ScummVM for your Dreamcast, you'll need the following: * gcc-4.6.3 configured as a cross-compiler for `sh-elf' * binutils-2.18 configured likewise * newlib for sh-elf : <URL:http://mc.pp.se/dc/files/newlib-1.19.0.tar.gz> * libronin-0.7 : <URL:http://peter.bortas.org/scumm/libronin-0.7.tar.gz> * libmad : <URL:http://mc.pp.se/dc/files/libmad-0.15.1b.tar.gz> * GNU make Edit the Makefile to contain the path to libronin if you installed it somewhere other than /usr/local/ronin, then run `make dist', and you should get a scrambled binary SCUMMVM.BIN and some plugins *.PLG. For serial/IP upload, remove the "DYNAMIC_MODULES" line and just run `make', to get a static binary with the name `scummvm.elf'.