This page explains how to compile your own version of ScummVM using the iPhone backend.
TODO: Describe how to use XCode and create_project to compile for iOS using the official Apple toolchain.
Please note binaries generated with these instructions only work with jailbroken devices.
First you need to set up a toolchain for cross-compilation. On our buildbot we use this toolchain. It is based on LLVM/Clang and contains instructions on how to set it up.
In the previously linked toolchain a script to compile all libraries used by the iOS version of ScummVM is contained. Please refer to the toolchain's README file on how to build them.
Before we can compile ScummVM we need to configure the source tree for building. This is usually only required once or when you want to alter build options.
Choosing an iOS target
We feature two different iOS backends:
- iphone: Our legacy iOS backend, which supports all iOS3+ devices.
- ios7: Our modern iOS7+ backend, which only supports iOS7+ devices but features better integration for these.
Depending on which backend you use you will need to use a different value for the TARGET environment variable.
Setting up the Environment
export CPPFLAGS="-isystem $IOS_TOOLCHAIN_BASE/$TARGET/usr/include"
Where IOS_TOOLCHAIN_BASE contains the directory where you installed the toolchain. And TRAGET has been setup from the previous step.
NOTE: If you quit the shell you are using when configuring ScummVM and pick up compilation later, you will need to re-export only the PATH variable like described above.
Configuring the Build
Then configure ScummVM for the iOS version you want to target.
First, navigate to a path where you want your build files to be located (this can be the ScummVM root directory but does not have to be).
Then run the following:
./path/to/scummvm/configure --host=ios7 --with-staticlib-prefix=$IOS_TOOLCHAIN_BASE/$TARGET/usr
Replace ios7 with iphone if you want to build the older version of our iOS backend.
You can compile ScummVM with running make:
If you simply want to test whether changes you made compile but do not plan to use the binary for deployment you can also simply run make.
Please note that if you want to deploy ScummVM on your iOS device you will need to generate a bundle file. For this run either:
for the ios7 backend. Or
for the iphone backend.
Then simply upload the whole ScummVM.app directory to your device under the /Applications folder, and you're done!