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Building DOSBox-X
=================
The page is about manually building the DOSBox-X source code.
Automated development (preview) builds intended for testing purposes for various
platforms are also available from the [DOSBox-X Development Builds](https://dosbox-x.com/devel-build.html) page.
Released builds are available from the [Releases](https://github.com/joncampbell123/dosbox-x/releases) page.
For instructions on installing and using DOSBox-X, please look at the
[INSTALL](INSTALL.md) page and the [DOSBox-X Wiki](https://dosbox-x.com/wiki).
General information on source code compilation
----------------------------------------------
The four major operating systems and platforms of DOSBox-X are:
1. Windows 11, 10, 8, 7, Vista and XP, 9x/NT4 for 32-bit and 64-bit x86/x64 and ARM
- [Visual Studio (2017 and after)](#compiling-the-source-code-using-visual-studio-windows) for Vista and after
- [MinGW standard and lowend builds](#compiling-the-source-code-using-mingw-windows)
2. Linux (with X11) 64-bit x86/x64, and on a Raspberry Pi 3/4/5
- [General procedures](#general-procedures-to-compile-the-source-code-cross-platform)
- [Ubuntu](#to-compile-dosbox-x-in-ubuntu-tested-with-2004-and-2010)
- [Fedora Workstation](#to-compile-dosbox-x-in-fedora-workstation)
- [Raspberry Pi](#to-compile-dosbox-x-in-raspberry-pi)
3. macOS (Mac OS X) High Sierra and after, Intel, ARM-based, and Universal
- [macOS procedures](#compiling-the-source-code-in-macos-high-sierra-and-after)
4. DOS (MS-DOS 5.0+ or compatible)
- [HX-DOS](#to-compile-dosbox-x-for-dos-with-hx-dos-platform)
The code requires a C++ compiler that can support the C++11 standard.
DOSBox-X supports both SDL ([Simple Directmedia Library](https://www.libsdl.org/)) versions 1.x and 2.x.
Note that SDL1 version requires the in-tree SDL 1.x library since it has been heavily modified from
the original SDL 1.x source code and is thus somewhat incompatible with the stock library.
Such modifications provide additional functions needed to improve DOSBox-X and fix many issues with keyboard input,
window management, and display management that previously required terrible kludges within the DOSBox
and DOSBox-X source code.
In Windows, the modifications also permit the emulation to run independent of the main window so that moving,
resizing, or using menus does not cause emulation to pause.
In macOS, the modifications provide an interface to allow DOSBox-X to replace and manage the macOS menu bar.
On the other hand, only a slight modification regarding IME support on Windows and macOS are added to the
in-tree SDL2 code, so Linux and macOS users may choose to use the original SDL2 library,
while on Windows in-tree SDL2 code is always used.
Please look at the [README.source-code-description](README.source-code-description) file for more information
and descriptions on the source code.
Compiling the source code using Visual Studio (Windows)
-------------------------------------------------------
The source code can be built with Visual Studio 2017, 2019, and 2022.
The executables will work on 32-bit and 64-bit Windows Vista or higher.
Use the ```./vs/dosbox-x.sln``` "solution" file, select 32/64-bit, SDL1/2 and build the source code.
You will need the DirectX 2010 SDK for Direct3D9 support.
By default the targeted platform is v142 (Visual Studio 2019).
Change it to v141 (VS2017) or v143 (VS2022) accordingly to your build environment.
`WindowsTargetPlatformVersion` is set to `10.0` by default, which make VS pick the latest Windows SDK version installed,
but VS2017 requires you to explicitly set the version installed in your PC, for example `10.0.22000.0`.
_Note that ARM builds requires versions ``10.0.22621.0`` or before._
To build executables that will work on Windows XP, you have to change the target platform to v141 (Visual Studio 2017).
After the build is completed, you have to patch the PE header of the executable using a tool included in the source code.
```./contrib/windows/installer/PatchPE.exe path-to-your-exe-file/dosbox-x.exe```
Libraries such as SDL, freetype, libpdcurses, libpng and zlib are already included,
and as of DOSBox-X 0.83.6 support for FluidSynth MIDI Synthesizer is also included
for Windows builds (set ``mididevice=fluidsynth`` in the [midi] section of DOSBox-X's
configuration file (dosbox-x.conf) along with required soundfont file [e.g.
``FluidR3_GM.sf2`` or ``GeneralUser_GS.sf2``] to use it).
The slirp backend for the NE2000 network emulation is only supported by MinGW builds
but not Visual Studio builds.
Build the source code for your platform (Win32, x64, ARM and ARM64 are supported).
As of 2018/06/06, Visual Studio 2017 builds (32-bit and 64-bit) explicitly require
a processor that supports the SSE instruction set. As of version 2022.09.01, Visual
Studio ARM/ARM64 builds require a Windows SDK that includes the OpenGL library.
Visual Studio Code is supported, too.
Check the [README.development-in-Windows](README.development-in-Windows) file for more information about this platform.
Compiling the source code using MinGW (Windows)
-----------------------------------------------
Depending on the target OS to run DOSBox-X, the build environment and procedures will vary.
* For Windows 7 or later
* First install the required libraries needed.
Libraries for mingw32(32-bit)
```
pacman -S git make mingw-w64-i686-toolchain mingw-w64-i686-libslirp mingw-w64-i686-libtool mingw-w64-i686-nasm autoconf automake mingw-w64-i686-ncurses
```
Libraries for mingw64(64-bit)
```
pacman -S git make mingw-w64-x86_64-toolchain mingw-w64-x86_64-libslirp mingw-w64-x86_64-libtool mingw-w64-x86_64-nasm autoconf automake mingw-w64-x86_64-ncurses
```
Libraries for UCRT64(64-bit)
```
pacman -S git make mingw-w64-ucrt-x86_64-toolchain mingw-w64-ucrt-x86_64-libtool mingw-w64-ucrt-x86_64-nasm autoconf automake mingw-w64-ucrt-x86_64-libslirp
```
* Compile (SDL1 or SDL2, Common for 32-bit/64-bit builds)
```
./build-mingw
```
```
./build-mingw-sdl2
```
* For Windows XP or later (SDL1 or SDL2, 32-bit only)
* Start a 32-bit toolchain from the original (MinGW not the MinGW-w64 project).
Build environment for XP and later can be downloaded [here](https://github.com/joncampbell123/dosbox-x/blob/master/build-scripts/mingw/lowend-bin/i686-7.3.0-release-posix-dwarf-rt_v5-rev0%2Bnasm.7z).
As an example, the official Release and Nightly builds are built by overwriting MinGW32 environment of MSYS2 with the above environment.
Refer to `MinGW32_CI_lowend_build` section in [mingw32.yml](https://github.com/joncampbell123/dosbox-x/blob/master/.github/workflows/mingw32.yml) for details.
* Compile (SDL1 or SDL2, Common for 32-bit/64-bit builds)
```
./build-mingw-lowend
```
```
./build-mingw-lowend-sdl2
```
* For Windows 9x/NT4 (SDL1, 32-bit only)
* Start a 32-bit toolchain from the original MinGW (not the MinGW-w64 project).
Build environment for 9x/NT4 build can be downloaded [here](https://github.com/crazii/MINGW-toolchains-w9x/releases/download/v1.0.1-w95nt/mingw32.7z).
As an example, the official Release and Nightly builds are built by overwriting MinGW32 environment of MSYS2 with the above environment.
Refer to `MinGW32_CI_lowend9x_build` section in [mingw32.yml](https://github.com/joncampbell123/dosbox-x/blob/master/.github/workflows/mingw32.yml) for details.
* Compile
```
./build-mingw-lowend9x
```
NOTICE: Lowend builds should NOT be compiled with MinGW-w64 since they have extra dependencies which are not supported by Windows XP, Vista and 9x/NT4.
## General procedures to compile the source code (cross-platform)
* First install the required tools and libraries, such as git, gcc, g++, make, Autotools, pkg-config, nasm, libxkbfile.
Depending on the [options](#libraries-used-by-dosbox-x) you want, some more may be required.
* Download the source code from the github repository
```
git clone https://github.com/joncampbell123/dosbox-x.git
cd dosbox-x
```
* General Linux or BSD compile (SDL1)
```
./build-debug
sudo make install
```
Alternatively you can also compile the SDL2 version by running the ``./build-debug-sdl2`` script.
## To compile DOSBox-X in Ubuntu (tested with 20.04 and 20.10):
First install the development tools, headers and libraries needed
```
sudo apt install automake gcc g++ make libncurses-dev nasm libsdl-net1.2-dev libsdl2-net-dev libpcap-dev libslirp-dev fluidsynth libfluidsynth-dev libavdevice58 libavformat-dev libavcodec-dev libavcodec-extra libavcodec-extra58 libswscale-dev libfreetype-dev libxkbfile-dev libxrandr-dev
```
Then change to the directory where you unpacked the DOSBox-X source code, and run the following commands:
```
./build-debug
sudo make install
```
Alternatively you can also compile the SDL2 version by running the ``./build-debug-sdl2`` script.
## To compile DOSBox-X in Fedora Workstation:
First install the development tools, headers and libraries needed
```
sudo dnf group install "C Development Tools and Libraries"
sudo dnf install SDL_net-devel SDL2_net-devel libxkbfile-devel ncurses-devel libpcap-devel libslirp-devel libpng-devel fluidsynth-devel freetype-devel nasm
```
If you want to be able to record video, you will also need to install ffmpeg-devel which you can get from the optional rpmfusion-free repository.
Then change to the directory where you unpacked the DOSBox-X source code, and run the following commands:
```
./build-debug
sudo make install
```
Alternatively you can also compile the SDL2 version by running the ``./build-debug-sdl2`` script.
## To create a DOSBox-X RPM for use in RHEL, CentOS or Fedora:
First ensure that your system has all the necessary development tools and libraries installed, such as by following the dnf steps in the above "To compile DOSBox-X in Fedora Workstation".
Then run the following commands:
```
sudo dnf group install "RPM Development Tools"
./make-rpm.sh
```
After a successful compile, the RPM can be found in the releases directory.
## To compile DOSBox-X in Raspberry Pi:
The official Raspberry PI website has an article including build instructions from source.
https://www.raspberrypi.com/news/read-floppy-disks-and-cd-roms-with-raspberry-pi-5-magpimonday/
```
sudo apt install libtool autogen autoconf automake libncurses-dev gcc g++ make libncurses-dev nasm libsdl-net1.2-dev libsdl2-net-dev libpcap-dev libslirp-dev fluidsynth libfluidsynth-dev libavformat-dev libavcodec-dev libavcodec-extra libswscale-dev libfreetype-dev libxkbfile-dev libxrandr-dev
git clone https://github.com/joncampbell123/dosbox-x.git
cd dosbox-x
./build-debug
```
If you have audio problems, you may want to try the SDL2 build using `./build-debug-sdl2` script.
Compiling the source code in macOS (High Sierra and after)
----------------------------------------------------------
macOS builds are expected to compile on the terminal using GNU autotools and the LLVM/Clang compiler provided by XCode.
Universal macOS builds are only possible when building on a host machine powered by an Apple Silicon CPU,
due to requiring parallel Homebrew installations running natively *and* under Rosetta 2.
* First install the required tools and libraries from [Homebrew](https://brew.sh/ja/) or [MacPorts](https://www.macports.org/).
To target older OS versions, MacPorts maybe recommended.
```
brew install autoconf automake nasm glfw glew fluid-synth libslirp libpcap pkg-config sdl2_net
```
```
sudo port install autoconf automake nasm glfw glew fluidsynth libslirp libpcap pkgconfig libsdl2_net
```
* Compile natively for the host architecture (SDL1 or SDL2)
```
./build-macos
```
```
./build-macos-sdl2
```
* _(Optional)_ Add `universal` option to build an Universal Binary on an Apple Silicon CPU (will *not* work on Intel)
```
./build-macos universal
```
```
./build-macos-sdl2 universal
````
* You can build an App Bundle from the result of this build with
```
make dosbox-x.app
```
## To compile DOSBox-X for DOS with HX-DOS platform
* Start a 32-bit toolchain from the original MinGW (not the MinGW-w64 project).
Build environment for HX-DOS build can be downloaded [here](https://github.com/joncampbell123/dosbox-x/blob/master/build-scripts/mingw/lowend-bin/mingw-get-0.6.2-mingw32-beta-20131004-1-bin.zip).
As an example, the procedures of official Release and Nightly builds can be found in [hxdos.yml](https://github.com/joncampbell123/dosbox-x/blob/master/.github/workflows/hxdos.yml) as a reference.
* Compile (SDL1, 32-bit only)
```
./build-mingw-hx-dos
```
NOTICE: HX-DOS builds should NOT be compiled with MinGW-w64 since they have extra dependencies which are not supported by the HX DOS Extender.
Libraries used by DOSBox-X
--------------------------
The following libraries are used by DOSBox-X:
* SDL 1.2.x or SDL 2.x (in-tree)
The Simple DirectMedia Library available at https://www.libsdl.org
The SDL1 library distributed with DOSBox-X had been heavily modified
from the original to support for example native OS menus.
Note that only version 1.2.x (SDL1 version) and version 2.x
(SDL2 version) are currently supported.
You may use SDL3 if combined with sdl2-compat library.
License: LGPLv2+
* Curses (optional)
If you want to enable the debugger you need a curses library.
ncurses should be installed on just about every Unix/Linux distro.
For Windows get pdcurses at https://pdcurses.org/
License: Public Domain
* Libpng (in-tree; optional)
Needed for the screenshots.
For Windows get libpng from https://gnuwin32.sourceforge.net/packages.html
See http://www.libpng.org/pub/png/ for more details.
License: zlib/libpng
* Zlib (in-tree)
Needed by libpng, and for save-state and CHD support.
For Windows get libz (rename to zlib) from https://gnuwin32.sourceforge.net/packages.html
See https://www.zlib.net/ for more details.
License: zlib
* FreeType (in-tree; optional)
Needed for TrueType font (TTF) output and printing support.
It is available from https://www.freetype.org/download.html
License: FTL or GPLv2+
* FluidSynth (optional)
For soundfont support.
It is available from https://www.fluidsynth.org/download/
License: LGPLv2+
* libpcap (optional)
For pcap backend of NE2000 networking support.
Get it from https://www.tcpdump.org/index.html#latest-releases
For Windows get Npcap (WinPcap for Windows 10) from https://nmap.org/download.html
License: 3-clause BSD license
* libslirp (optional)
For slirp backend of NE2000 networking support.
Get it from https://gitlab.freedesktop.org/slirp/libslirp
License: Modified 4-clause BSD license
* SDL_Net (in-tree; optional)
For Modem/IPX support.
Get it from https://www.libsdl.org/projects/SDL_net/release-1.2.html
License: LGPLv2+
* SDL_Sound (in-tree; optional)
For compressed audio on diskimages (cue sheets) support.
This is for cue/bin CD-ROM images with compressed (MP3/OGG/FLAC) audio tracks.
Get it from https://icculus.org/SDL_sound
Licence: LGPLv2+
* ALSA_Headers (optional)
For ALSA support under Linux. Part of the Linux kernel sources.
License: LGPLv2+
Configure script options
------------------------
The DOSBox-X configure script accepts the following switches, which you can use to customize the code compilation:
* --enable-FEATURE[=ARG]
Includes FEATURE [ARG=yes]
* --enable-silent-rules
Less verbose build output (undo: "make V=1")
* --enable-dependency-tracking
Do not reject slow dependency extractors
* --enable-force-menu-sdldraw
Forces SDL drawn menus
* --enable-hx-dos
Enables HX-DOS target
* --enable-emscripten
Enables Emscripten target
* --enable-sdl
Enables SDL 1.x
* --enable-sdl2
Enables SDL 2.x
* --enable-xbrz
Compiles with xBRZ scaler (default yes)
* --enable-scaler-full-line
Scaler render full line instead of detecting
changes, for slower systems
* --enable-alsa-midi
Compiles with ALSA MIDI support (default yes)
* --enable-d3d9
Enables Direct3D 9 support
* --enable-d3d-shaders
Enables Direct3D shaders
* --enable-debug
Enables the internal debugger. --enable-debug=heavy enables even more
debug options. To use the debugger, DOSBox-X should be run from an xterm
and when the sdl-window is active press alt-pause to enter the
debugger.
* --disable-FEATURE
Do not include FEATURE (same as --enable-FEATURE=no)
* --disable-silent-rules
Verbose build output (undo: "make V=0")
* --disable-dependency-tracking
Speeds up one-time build
* --disable-largefile
Omits support for large files
* --disable-x11
Do not enable X11 integration
* --disable-optimize
Do not enable compiler optimizations
* --disable-sdl2test
Do not try to compile and run a test SDL 2.x program
* --disable-sdltest
Do not try to compile and run a test SDL 1.x program
* --disable-alsatest
Do not try to compile and run a test ALSA program
* --disable-freetype
Disables FreeType support
* --disable-printer
Disables printer emulation
* --disable-mt32
Disables MT32 emulation
* --disable-screenshots
Disables screenshots and movie recording
* --disable-avcodec
Disables FFMPEG avcodec support
* --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
* --disable-fpu-x64
Disables the assembly FPU core. Although relatively new, the x86/x64
FPU core has more accuracy than the regular FPU core.
* --disable-dynamic-x86
Disables the dynamic x86/x64 specific CPU core. Although it might be
a bit unstable, it can greatly improve the speed of dosbox-x on x86
and x64 hosts.
Please note that this option on x86/x64 will result in a different
dynamic/recompiling CPU core being compiled than the default.
For more information see the option --disable-dynrec
* --disable-dynrec
Disables the recompiling CPU core. Currently x86/x64 and arm only.
You can activate this core on x86/x64 by disabling the dynamic-x86
core.
* --disable-dynamic-core
Disables all dynamic cores. (same effect as --disable-dynamic-x86
or --disable-dynrec).
* --disable-opengl
Disables OpenGL support (output mode that can be selected in the
DOSBox-X configuration file).
* --disable-unaligned-memory
Disables unaligned memory access.
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