RFC/WIP A8 Libretro integration

Author: cwedgwood

.github/workflows/package.yml

@@ -44,6 +44,14 @@ jobs:
           make --silent -j 4
           mkdir -p ${{ env.LIBRETRO_CORES_DIR }}
           mv stella2014_libretro.so ${{ env.LIBRETRO_CORES_DIR }}
+      - name: 'Build "atari800" core'
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: |
+          git clone https://github.com/libretro/libretro-atari800
+          cd libretro-atari800/
+          make --silent -j 4
+          mkdir -p ${{ env.LIBRETRO_CORES_DIR }}
+          mv atari800_libretro.so ${{ env.LIBRETRO_CORES_DIR }}
       - name: Build Mesen-X core
         if: steps.cache.outputs.cache-hit != 'true'
         run: |

CMakeLists.txt

@@ -52,6 +52,12 @@ if(NOT CMAKE_CROSSCOMPILING)
     PATHS ENV EMUTEST_DIR)
   message(STATUS "Emutest test runner: ${EMUTEST_COMMAND}")
 
+  find_library(LIBRETRO_ATARI800_CORE
+    NAMES
+    atari800_libretro.so atari800_libretro.dylib atari800_libretro.dll
+    PATHS /lib64/libretro ENV LIBRETRO_CORES_DIR)
+  message(STATUS "Libretro Atari800 core: ${LIBRETRO_ATARI800_CORE}")
+
   find_library(LIBRETRO_STELLA_CORE
     NAMES
     stella2014_libretro.so stella2014_libretro.dylib stella2014_libretro.dll

README.md

@@ -306,14 +306,21 @@ Copy `test/mesen_settings.xml` to this folder.
 
 Install emutest (requires Go 1.21):
 ```console
-$ go install https://github.com/kivutar/emutest
+$ go install github.com/kivutar/emutest@latest
 ```
 
-Make sure `$GOBIN` (usually `~/go/bin`) is included in your PATH environment variable so that CMake can find the binary, or set the `EMUTEST_DIR` environment variable to point to this directory before running `cmake -G` for the first time.
+Make sure `$GOBIN` (usually `~/go/bin`) is included in your `PATH`
+environment variable so that CMake can find the binary, or set the
+`EMUTEST_DIR` environment variable to point to this directory before
+running `cmake -G` for the first time.
+
+You can verify emutest with `emutest -h < /dev/null` on the
+command-line.
 
 Build Libretro cores for desired target(s):
 
 * Atari 2600 - https://github.com/libretro/stella2014-libretro
+* Atari 800 - https://github.com/libretro/libretro-atari800
 * NES - https://github.com/NovaSquirrel/Mesen-X
 
 Copy the output Libretro core library files (they have extensions .so | .dylib | .dll) to a shared directory, maybe `$HOME/libretro`.