ScummVM mainline libretro core

Libretro core built directly from untouched mainline ScummVM source.

Purpose

As current official ScummVM libretro core is based on a very old fork of ScummVM, this repository aims to have a libretro core always in sync with ScummVM mainline repository, with a maintenance effort from low to none.

ScummVM main repo is included as a submodule. To sync the libretro core it should be sufficient to update the submodule and build
No patch is applied to the submodule
Submodule updates are generally committed following ScummVM official releases (though it can be updated to any commit upstream, considering that adjustment to core makefiles and sources in src may be required to build). First three fields of core tags are relevant to upstream ScummVM version, last is libretro core revision (e.g. v2.6.1.1 is ScummVM 2.6.1, core revision 1).
Datafiles and themes bundle (scummvm.zip) and core.info files are built automatically based on current submodule source

Build

To build with the default configuration type in a shell the following:

git clone --recursive https://github.com/libretro/scummvm
cd scummvm
make

"Work in progress" engines are not built by default, to include them pass NO_WIP=0 to make.

Build for Android

To build for Android:

install android-sdk
install android-ndk (e.g. through sdkmanager included in android-sdk/cmdline-tools)
make sure all needed sdk/ndk paths are included in PATH
type in a shell the following:

git clone --recursive https://github.com/libretro/scummvm
cd scummvm/jni
ndk-build

Core will be built for all available android targets by default

Data files and themes

Data files required for certain games and core functions (e.g. virtual keyboard) and default ScummVM GUI themes are bundled during the build process in scummvm.zip file. Libretro core info file is created during build as well. Extract scummvm.zip and select relevant paths in ScummVM GUI (or modify scummvm.ini accordingly) to load properly needed data files/themes in the core.

Core options and configuration

All options and configuration of the legacy libretro core are applicable to this one as well, refer to relevant link in Resources.

Some additional options have been added to this core:

On-screen virtual keyboard (retropad "select" button by default to activate/deactivate)
Set D-pad cursor acceleration time

Resources

Official ScummVM repository readme is here.

Legacy ScummVM libretro core documentation is here.