visualboyadvance-m/README.md

Visual Boy Advance - M

Game Boy Advance Emulator

Homepage and Forum: http://vba-m.com

Windows and Mac builds are in the releases tab.

Daily Ubuntu packages here: https://code.launchpad.net/~sergio-br2/+archive/ubuntu/vbam-trunk

Your distribution may have packages available as well, search for "vbam".

It is also generally very easy to build from source, see below.

Building

The basic formula to build vba-m is:

cd ~ && mkdir src && cd src
git clone https://github.com/visualboyadvance-m/visualboyadvance-m.git
cd visualboyadvance-m
./installdeps

# ./installdeps will give you build instructions, which will be similar to:

mkdir build && cd build
cmake ..
make -j8

./installdeps is supported on MSys2, Linux (Debian/Ubuntu, Fedora or Arch Linux) and Mac OS X (homebrew, macports or fink.)

The Ninja cmake generator is also now supported, including on msys2.

If your OS is not supported, you will need the following:

• c++ compiler and binutils
• make
• cmake
• git
• nasm (optional, for 32 bit builds)

And the following development libraries:

• zlib (required)
• mesa (if using X11 or any OpenGL otherwise)
• ffmpeg (optional, for game recording)
• gettext and gettext tools (optional, with ENABLE_NLS)
• png (required)
• SDL2 (required)
• SFML (optional, for link)
• OpenAL (optional, a sound interface)
• wxWidgets (required, 2.8 is still supported)
• cairo (optional, rendering interface)

On Linux and similar, you also need the version of GTK your wxWidgets is linked to (usually 2 or 3).

Support for more OSes/distributions for ./installdeps is planned.

Cross Compiling for Win32

./installdeps takes one optional parameter for cross-compiling target, which may be win32 which is an alias for mingw-w64-i686 to target 32 bit Windows, or mingw-gw64-x86_64 for 64 bit Windows targets.

The target is implicit on MSys2 depending on which MINGW shell you started (the value of $MSYSTEM.) It will not run in the MSys shell.

On Debian/Ubuntu this uses the MXE apt repository and works really well.

On Fedora it can build using the Fedora MinGW packages, albeit with wx 2.8, no OpenGL support, and no Link support for lack of SFML.

On Arch it currently doesn't work at all because the AUR stuff is completely broken, I will at some point redo the arch stuff to use MXE as well.

CMake Options

The CMake code tries to guess reasonable defaults for options, but you can override them on the cmake command with e.g.:

cmake .. -DENABLE_LINK=NO

Of particular interest is making RELEASE or DEBUG builds, the default mode is RELEASE, to make a DEBUG build use something like:

cmake .. -DCMAKE_BUILD_TYPE=Debug

Here is the complete list:

CMake Option	What it Does	Defaults
ENABLE_SDL	Build the SDL port	OFF
ENABLE_WX	Build the wxWidgets port	ON
ENABLE_DEBUGGER	Enable the debugger	ON
ENABLE_NLS	Enable translations	ON
ENABLE_ASM	Enable the following three ASM options	ON for 32 bit builds
ENABLE_ASM_CORE	Enable x86 ASM CPU cores	ON for 32 bit builds
ENABLE_ASM_SCALERS	Enable x86 ASM graphic filters	ON for 32 bit builds
ENABLE_MMX	Enable MMX	ON for 32 bit builds
ENABLE_LINK	Enable GBA linking functionality (requires SFML)	ON
ENABLE_LIRC	Enable LIRC support	OFF
ENABLE_FFMPEG	Enable ffmpeg A/V recording	ON on Linux and MSys2
ENABLE_LTO	Compile with Link Time Optimization (gcc and clang only)	ON where works
ENABLE_GBA_LOGGING	Enable extended GBA logging	ON
ENABLE_CAIRO	Enable Cairo rendering for wxWidgets	OFF
ENABLE_DIRECT3D	Direct3D rendering for wxWidgets (Windows, NOT IMPLEMENTED!!!)	ON
ENABLE_XAUDIO2	Enable xaudio2 sound output for wxWidgets (Windows only)	ON
ENABLE_OPENAL	Enable OpenAL for the wxWidgets port	ON

MSys2 Notes

To run the resulting binary, you can simply type:

./visualboyadvance-m

in the shell where you built it.

If you built with -DCMAKE_BUILD_TYPE=Debug, you will get a console app and will see debug messages, even in mintty.

If you want to start the binary from e.g. a shortcut or Explorer, you will need to put c:\msys64\mingw32\bin for 32 bit builds and c:\msys64\mingw64\bin for 64 bit builds in your PATH (to edit system PATH, go to Control Panel -> System -> Advanced system settings -> Environment Variables.)

If you want to package the binary, you will need to include the MinGW DLLs it depends on, they can install to the same directory as the binary.

For our own builds, we use MXE to make static builds.

Debug Messages

We have an override for wxLogDebug() to make it work even in non-debug builds of wx and on windows, even in mintty. Using this function for console debug messages is recommended.

It works like printf(), but using wxString, so use wxT() e.g.:

int foo = 42;
wxLogDebug(wxT("the value of foo = %d"), foo);

%s does not work for wxString, so you can do something like this:

wxString world = "world";
wxLogDebug(wxT("Hello, %s!"), world.utf8_str());

CONTRIBUTING

Please keep in mind that this app needs to run on Windows, Linux and Mac OS X at the very least, so code should be portable and/or use the appropriate #ifdefs and the like when needed.

Please try to craft a good commit message, this post by the great tpope explains how to do so: http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html

If you have multiple small commits for a change, please try to use git rebase -i (interactive rebase) to squash them into one or a few logical commits (with good commit messages!) See: https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History if you are new to this.