Build the version-correct boot ROMs rather than the latest, add libretro GitLab CI

.github/actions/update_libretro.sh

@@ -8,19 +8,22 @@ if [ $(git tag -l "$LATEST"-libretro) ]; then
     exit 0
 fi
 
-echo "Building boot ROMs..."
-make -j bootroms
-mv build/bin/BootROMs BootROMs/prebuilt
-
-echo "Updating branch"
 git config --global --add --bool push.autoSetupRemote true
 git config --global user.name 'Libretro Updater'
 git config --global user.email '<>'
 
+cp libretro/gitlab-ci.yml .gitlab-ci.yml
+
+echo "Switching to tag $LATEST"
 git branch --delete libretro || true
 git checkout tags/$LATEST -b libretro
 
-git add BootROMs/prebuilt/*
+echo "Building boot ROMs..."
+make -j bootroms
+
+echo "Updating branch"
+mv build/bin/BootROMs BootROMs/prebuilt
+git add BootROMs/prebuilt/* .gitlab-ci.yml
 git commit -m "Update libretro branch to $LATEST"
 git tag "$LATEST"-libretro
 git push --force

libretro/gitlab-ci.yml

@@ -0,0 +1,181 @@
+# DESCRIPTION: GitLab CI/CD for libRetro (NOT FOR GitLab-proper)
+
+##############################################################################
+################################# BOILERPLATE ################################
+##############################################################################
+
+# Core definitions
+.core-defs:
+  variables:
+    JNI_PATH: libretro
+    MAKEFILE_PATH: libretro
+    CORENAME: sameboy
+    BOOTROMS_DIR: BootROMs/prebuilt
+
+# Inclusion templates, required for the build to work
+include:
+  ################################## DESKTOPS ################################
+  # Windows 64-bit
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/windows-x64-mingw.yml'
+
+  # Windows 32-bit
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/windows-i686-mingw.yml'
+
+  # Linux 64-bit
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/linux-x64.yml'
+
+  # Linux 32-bit
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/linux-i686.yml'
+
+  # MacOS 64-bit
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/osx-x64.yml'
+
+  # MacOS ARM 64-bit
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/osx-arm64.yml'
+
+  ################################## CELLULAR ################################
+  # Android
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/android-jni.yml'
+
+  # iOS
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/ios-arm64.yml'
+
+  # iOS (armv7)
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/ios9.yml'
+
+  ################################## CONSOLES ################################
+  # Nintendo WiiU
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/wiiu-static.yml'
+    
+  # Nintendo Switch
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/libnx-static.yml'
+    
+  # PlayStation Vita
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/vita-static.yml'
+
+  # tvOS (AppleTV)
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/tvos-arm64.yml'
+
+  #################################### MISC ##################################
+
+# Stages for building
+stages:
+  - build-prepare
+  - build-shared
+  - build-static
+
+##############################################################################
+#################################### STAGES ##################################
+##############################################################################
+#
+################################### DESKTOPS #################################
+# Windows 64-bit
+libretro-build-windows-x64:
+  extends:
+    - .libretro-windows-x64-mingw-make-default
+    - .core-defs
+
+# Windows 32-bit
+libretro-build-windows-i686:
+  extends:
+    - .libretro-windows-i686-mingw-make-default
+    - .core-defs
+
+# Linux 64-bit
+libretro-build-linux-x64:
+  extends:
+    - .libretro-linux-x64-make-default
+    - .core-defs
+
+# Linux 32-bit
+libretro-build-linux-i686:
+  extends:
+    - .libretro-linux-i686-make-default
+    - .core-defs
+
+# MacOS 64-bit
+libretro-build-osx-x64:
+  extends:
+    - .libretro-osx-x64-make-10-7
+    - .core-defs
+
+# MacOS ARM 64-bit
+libretro-build-osx-arm64:
+  extends:
+    - .libretro-osx-arm64-make-default
+    - .core-defs
+
+################################### CELLULAR #################################
+# Android ARMv7a
+android-armeabi-v7a:
+  extends:
+    - .libretro-android-jni-armeabi-v7a
+    - .core-defs
+
+# Android ARMv8a
+android-arm64-v8a:
+  extends:
+    - .libretro-android-jni-arm64-v8a
+    - .core-defs
+
+# Android 64-bit x86
+android-x86_64:
+  extends:
+    - .libretro-android-jni-x86_64
+    - .core-defs
+
+# Android 32-bit x86
+android-x86:
+  extends:
+    - .libretro-android-jni-x86
+    - .core-defs
+
+# iOS
+libretro-build-ios-arm64:
+  extends:
+    - .libretro-ios-arm64-make-default
+    - .core-defs
+
+# iOS (armv7) [iOS 9 and up]
+libretro-build-ios9:
+  extends:
+    - .libretro-ios9-make-default
+    - .core-defs
+    
+# tvOS
+libretro-build-tvos-arm64:
+  extends:
+    - .libretro-tvos-arm64-make-default
+    - .core-defs
+
+################################### CONSOLES #################################
+# Nintendo WiiU
+libretro-build-wiiu:
+  extends:
+    - .libretro-wiiu-static-retroarch-master
+    - .core-defs
+    
+# Nintendo Switch
+libretro-build-libnx-aarch64:
+  extends:
+    - .libretro-libnx-static-retroarch-master
+    - .core-defs
+
+# PlayStation Vita
+libretro-build-vita:
+  extends:
+    - .libretro-vita-static-retroarch-master
+    - .core-defs