Setting up Development Environment

2016-02-19T17:41:28Z

Ante0: /* Linux */ edited to echo full path to .bashrc instead of using variables

= Setup =
* Install [http://devkitpro.org/ devkitARM]. If it's already installed, update it. On Windows there's a [http://sourceforge.net/projects/devkitpro/files/Automated%20Installer/ GUI installer]. On Linux/Mac there's a [http://sourceforge.net/projects/devkitpro/files/Automated%20Installer/devkitARMupdate.pl/download perl-script]. Make sure you also select libctru and the 3ds examples when installing.
* Depending on the kind of homebrew you want to develop, you may be interested in installing and using additional libraries and tools which don't ship alongside devkitARM/libctru. A list of them can be found in [[Homebrew Libraries and Tools]].

==Linux==
* First get the devkitARM updater Perl script for Linux.
* Run it with superuser privileges if your /opt directory is not marked world read-writeable.

<pre>sudo apt-get install git curl
curl -L http://sourceforge.net/projects/devkitpro/files/Automated%20Installer/devkitARMupdate.pl/download -o devkitARMupdate.pl
chmod +x ./devkitARMupdate.pl
sudo ./devkitARMupdate.pl /opt/devkitpro
echo "export DEVKITPRO=/opt/devkitpro" >> ~/.bashrc
echo "export DEVKITARM=/opt/devkitpro/devkitARM" >> ~/.bashrc
echo "export PATH=$PATH:/opt/devkitpro/devkitARM/bin" >> ~/.bashrc
source ~/.bashrc
</pre>

= Building the examples =
3DS examples are still being created. Currently there are a few examples distributed by the devkitPro supplied updaters - these can be found in $DEVKITPRO/examples/3ds and the [https://github.com/devkitPro/3ds-examples 3ds examples repository]. There are now too many to list here in detail.

These can be built from the command line - on Windows devkitPro supply msys which can be started using the msys shortcut in the devkitPro Start Menu entry or by browsing to <installdir>\devkitPro\msys and double clicking the msys.bat file found there. This will launch a bash shell. On Linux/OSX you can just open your system supplied shell.

To start a new homebrew project from here simply type
<pre>cp -r $DEVKITPRO/examples/3ds/templates/application ~/projects/my3dsproject
cd ~/projects/my3dsproject
make
</pre> To run it on your 3DS start up The Homebrew Launcher, press the Y button to open the netloader then
<pre>$DEVKITARM/bin/3dslink my3dsproject.3dsx</pre>

Hopefully you'll see it boot on the 3DS.

Obviously you can add $DEVKITARM/bin to your PATH from the shell then simply run 3dslink as normal. You shouldn't add this permanently - it could potentially interfere with other tools.

==Building the examples on Linux with Netbeans==
* Go to File->New Project...
* Select C/C++ Project with existing code
* Navigate to the examples directory and select the folder for the project you want to build; eg. /home/vtsingaras/3ds/examples/app_launch
* Leave Configuration Mode to 'Automatic' and click 'Finish'.
* It will fail to build. Now edit Makefile and insert these two lines, adjusting for your devkitpro path, at the top:
<pre>export DEVKITPRO=/opt/devkitpro
export DEVKITARM=/opt/devkitpro/devkitARM</pre>
* Right-click the project and go to Properties->Code Assistance and click C Compiler.
* In include directories enter
<pre>/opt/devkitpro/devkitARM/include;/opt/devkitpro/ctrulib/libctru/include</pre>
adjusting again for your devkitPro path.
* Do the same for 'C++ Compiler'.
* Go to 'Run' and click 'Clean and Build Project'.
* Now right-click on the project and select Code Assistance->Reparse Project.

Now you can use Netbeans' code completion feature and build your project from the Run menu.

= Building homebrew for distribution =
To build your homebrew open a terminal, browse to your homebrew's folder and run make.

* This will build a .elf file and a .3dsx file together with an icon. The icon and .3dsx file are the format required for the [[Homebrew Channel]].

* To build a CCI (.3ds) file you need to strip the .elf file and use makerom on it (with the provided RSF file):
arm-none-eabi-strip [ELF file]
makerom -f cci -o [.3ds file] -rsf [RSF file] -target t -exefslogo -elf [ELF file] -icon [icon file] -banner [banner file]

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Setting up Development Environment