Things needed for compilation. SDL The Simple DirectMedia Library available at http://www.libsdl.org The dll distributed with the windows version of DOSBox is slightly modified. You can find the changes in the sourcepackage of DOSBox (src/platform/sdl-win32.diff). If you want the patched sourcetree send us an email. (see README) Licensed under LGPL Note that only version 1.2 and its subversions (1.2.8, 1.2.13 etc.) are currently supported. Curses (optional) If you want to enable the debugger you need a curses library. ncurses should be installed on just about every unix distro. For win32 get pdcurses at http://pdcurses.sourceforge.net License: Open source Libpng (optional) Needed for the screenshots. For win32 get libpng from http://gnuwin32.sourceforge.net/packages.html See http://www.libpng.org/pub/png/ for more details. License: Open Source Zlib (optional) Needed by libpng. For win32 get libz (rename to zlib) from http://gnuwin32.sourceforge.net/packages.html See http://www.zlib.net for more details. License: Open Source SDL_Net (optional) For modem/ipx support. Get it from http://www.libsdl.org/projects/SDL_net/ Licensed under LGPL SDL_Sound For compressed audio on diskimages. (optional) This is for cue/bin cdrom images with compressed (mp3/ogg) audio tracks. Get it from http://icculus.org/SDL_sound Licenced under LGPL ALSA_Headers (optional) for Alsa support under linux. Part of the linux kernel sources Licensed under LGPL If you want compile from developer sources (SVN) under a unix system, you'll also need automake (>=1.6), autoconf(>=2.50). Should be available at http://www.gnu.org For building on unix systems. If you are building from developer sources run ./autogen.sh first before doing the following. 1. ./configure 2. make In step 1 you could add the following switches: --enable-debug enables the internal debugger. --enable-debug=heavy enables even more debug options. DOSBox should then be run from a xterm and when the sdl- window is active press alt-pause to enter the debugger. --enable-core-inline enables some memory increasing inlines. This greatly increases compiletime for maybe a increase in speed. --disable-fpu disables the emulated fpu. Although the fpu emulation code isn't finished and isn't entirely accurate it's advised to leave it on. --disable-fpu-x86 disables the assembly fpu core. Although relatively new the x86 fpu core has more accuracy then the regular fpu core. --disable-dynamic-x86 disables the dynamic x86 specific cpu core. Although it might be be a bit unstable, it can greatly improve the speed of dosbox on x86 hosts. Please note that this option on x86 will result in a different dynamic/recompiling cpu core being compiled then the default. For more information see the option --disable-dynrec --disable-dynrec disables the recompiling cpu core. Currently x86 and x86_64 only. You can activate this core on x86 by disabling the dynamic-x86 core. --disable-dynamic-core disables all dynamic cores. (same effect as --disable-dynamic-x86 --disable-dynrec) --disable-opengl disables OpenGL-support (output mode that can be selected in the DOSBox configuration file). --disable-unaligned-memory disables unaligned memory access. Check the src subdir for the binary. NOTE: If capslock and numlock appear to be broken. open src/ints/bios_keyboard.cpp and go to line 30 and read there how to fix it. Build instructions for VC++6 Don't use VC++ 6: it creates faulty code in core_normal.cpp Later Visual Studio versions work fine (vs2003/.net up to vs2010)