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This is used to verify the coding style of patches. Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
163 lines
4.4 KiB
Markdown
163 lines
4.4 KiB
Markdown
# RGBDS
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RGBDS (Rednex Game Boy Development System) is a free assembler/linker package
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for the Game Boy and Game Boy Color. It consists of:
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- rgbasm (assembler)
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- rgblink (linker)
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- rgbfix (checksum/header fixer)
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- rgbgfx (PNG‐to‐Game Boy graphics converter)
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This is a fork of the original RGBDS which aims to make the programs more like
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other UNIX tools.
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This toolchain is maintained on [GitHub](https://github.com/rednex/rgbds), as
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well as its [documentation](https://github.com/rednex/rednex.github.io).
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The documentation of this toolchain can be viewed online
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[here](https://rednex.github.io/), it is generated from the man pages found in
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this repository.
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## 1. Installing RGBDS
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### 1.1 Windows
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Windows builds are available in the releases page on GitHub:
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https://github.com/rednex/rgbds/releases
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Copy the `.exe` files to `C:\Windows\` or similar.
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If you require the latest version in development, it should be possible to
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compile RGBDS with MinGW or Cygwin by following the instructions to build it
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on UNIX systems.
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### 1.2 macOS
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You can build RGBDS by following the instructions below. However, if you would
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prefer not to build RGBDS yourself, you may also install it using
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[Homebrew](http://brew.sh/).
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To install the latest release, use:
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```sh
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brew install rgbds
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```
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To install RGBDS with all of the current changes in development (as seen on the
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`master` branch on GitHub), use:
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```sh
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brew install rgbds --HEAD
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```
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### 1.3 Other UNIX-like systems
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No official binaries of RGBDS are distributed for these systems, you must follow
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the simple instructions below to compile and install it.
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## 2. Building RGBDS from source
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RGBDS can be built in UNIX-like systems by following the instructions below.
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### 2.1 Dependencies
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RGBDS requires yacc, flex, libpng and pkg-config to be installed.
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On macOS, install the latter two with [Homebrew](http://brew.sh/):
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```sh
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brew install libpng pkg-config
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```
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On other Unixes, use the built-in package manager. For example, on Debian or
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Ubuntu:
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```sh
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sudo apt-get install byacc flex pkg-config libpng-dev
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```
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You can test if libpng and pkg-config are installed by running
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`pkg-config --cflags libpng`: if the output is a path, then you're good, and if
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it outputs an error then you need to install them via a package manager.
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### 2.2 Build process
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To build the programs, run in your terminal:
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```sh
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make
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```
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Then, to install the compiled programs and manual pages, run (with appropriate
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privileges, e.g, with `sudo`):
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```sh
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make install
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```
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After installation, you can read the manuals with the `man` command. E.g.,
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```sh
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man 7 rgbds
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```
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There are some variables in the Makefile that can be redefined by the user. The
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variables described below can affect installation behavior when given on the
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make command line. For example, to install RGBDS in your home directory instead
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of systemwide, run the following:
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```sh
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make install PREFIX=$HOME
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```
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To do a verbose build, run:
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```sh
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make Q=
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```
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This is the complete list of user-defined variables:
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- `PREFIX`: Location where RGBDS will be installed. Defaults to `/usr/local`.
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- `bindir`: Location where the binaries will be installed. Defaults to
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`${PREFIX}/bin`.
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- `mandir`: Location where the manpages will be installed. Defaults to
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`${PREFIX}/man`.
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- `DESTDIR`: This is prepended to all paths during the installation. It is
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mainly used for packaging.
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- `Q`: Whether to quiet the build or not. To make the build more verbose, clear
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this variable. Defaults to `@`.
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- `STRIP`: Whether to strip the installed binaries of debug symbols or not.
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Defaults to `-s`.
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- `BINMODE`: Permissions of the installed binaries. Defaults to `555`.
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- `MANMODE`: Permissions of the installed manpages. Defaults to `444`.
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- `CHECKPATCH`: Path of the script `checkpatch.pl` of the Linux kernel. Defaults
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to `../linux/scripts/checkpatch.pl`.
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## 3 History
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- Around 1997, Carsten Sorensen (AKA SurfSmurf) writes ASMotor as a
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general-purpose assembler/linker system for DOS/Win32
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- Around 1999, Justin Lloyd (AKA Otaku no Zoku) adapts ASMotor to read and
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produce GBZ80 assembly/machine code, and releases this version as RGBDS.
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- 2009, Vegard Nossum adapts the code to be more UNIX-like and releases this
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version as rgbds-linux on [GitHub](https://github.com/vegard/rgbds-linux).
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- 2010, Anthony J. Bentley forks that repository. The fork becomes the reference
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implementation of rgbds.
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- 2017, Bentley's repository is moved to a neutral name.
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