cmake: create Android jars + apks for tests

cmake/android/SdlAndroidScript.cmake

@@ -0,0 +1,74 @@
+#[=======================================================================[
+
+This CMake script is meant to be used in CMake script mode (cmake -P).
+It wraps commands that communicate with an actual Android device.
+Because
+
+#]=======================================================================]
+
+cmake_minimum_required(VERSION 3.16)
+
+if(NOT CMAKE_SCRIPT_MODE_FILE)
+  message(FATAL_ERROR "This file can only be used in CMake script mode")
+endif()
+if(NOT ADB)
+  set(ADB "adb")
+endif()
+
+if(NOT ACTION)
+  message(FATAL_ERROR "Missing ACTION argument")
+endif()
+
+if(ACTION STREQUAL "uninstall")
+  # The uninstall action attempts to uninstall all packages. All failures are ignored.
+  foreach(package IN LISTS PACKAGES)
+    message("Uninstalling ${package} ...")
+    execute_process(
+        COMMAND ${ADB} uninstall ${package}
+        RESULT_VARIABLE res
+    )
+    message("... result=${res}")
+  endforeach()
+elseif(ACTION STREQUAL "install")
+  # The install actions attempts to install APK's to an Android device using adb. Failures are ignored.
+  set(failed_apks "")
+  foreach(apk IN LISTS APKS)
+    message("Installing ${apk} ...")
+    execute_process(
+        COMMAND ${ADB} install -d -r --streaming ${apk}
+        RESULT_VARIABLE res
+    )
+    message("... result=${res}")
+    if(NOT res EQUAL 0)
+      list(APPEND failed_apks ${apk})
+    endif()
+  endforeach()
+  if(failed_apks)
+    message(FATAL_ERROR "Failed to install ${failed_apks}")
+  endif()
+elseif(ACTION STREQUAL "build-install-run")
+  if(NOT EXECUTABLES)
+    message(FATAL_ERROR "Missing EXECUTABLES (don't know what executables to build/install and start")
+  endif()
+  if(NOT BUILD_FOLDER)
+    message(FATAL_ERROR "Missing BUILD_FOLDER (don't know where to build the APK's")
+  endif()
+  set(install_targets "")
+  foreach(executable IN LISTS EXECUTABLES)
+    list(APPEND install_targets "install-${executable}")
+  endforeach()
+  execute_process(
+      COMMAND ${CMAKE_COMMAND} --build "${BUILD_FOLDER}" --target ${install_targets}
+      RESULT_VARIABLE res
+  )
+  if(NOT res EQUAL 0)
+    message(FATAL_ERROR "Failed to install APK(s) for ${EXECUTABLES}")
+  endif()
+  list(GET EXECUTABLES 0 start_executable)
+  execute_process(
+      COMMAND ${CMAKE_COMMAND} --build "${BUILD_FOLDER}" --target start-${start_executable}
+      RESULT_VARIABLE res
+  )
+else()
+  message(FATAL_ERROR "Unknown ACTION=${ACTION}")
+endif()