cmake: create and install SDL3::Jar target for Android

CMakeLists.txt

···
         VERSION "${SDL3_VERSION}"
       )
       set_property(TARGET SDL3-jar PROPERTY OUTPUT "${SDL3_BINARY_DIR}/SDL3-${SDL3_VERSION}.jar")
+      add_library(SDL3__Jar INTERFACE)
+      add_library(SDL3::Jar ALIAS SDL3__Jar)
+      get_property(sdl3_jar_location TARGET SDL3-jar PROPERTY JAR_FILE)
+      set_property(TARGET SDL3__Jar PROPERTY JAR_FILE "${sdl3_jar_location}")
       set(javasourcesjar "${SDL3_BINARY_DIR}/SDL3-${SDL3_VERSION}-sources.jar")
       string(REGEX REPLACE "${android_java_sources_root}/" "" sdl_relative_java_sources "${SDL_JAVA_SOURCES}")
       add_custom_command(
···
 
 include(CMakePackageConfigHelpers)
 configure_package_config_file(cmake/SDL3Config.cmake.in SDL3Config.cmake
+  NO_SET_AND_CHECK_MACRO
   PATH_VARS CMAKE_INSTALL_PREFIX
   INSTALL_DESTINATION "${SDL_SDL_INSTALL_CMAKEDIR}"
 )
···
   endif()
 
   if(ANDROID)
-    set(SDL_INSTALL_JAVADIR "${CMAKE_INSTALL_DATAROOTDIR}/java" CACHE PATH "Path where to install java clases + java sources")
     if(TARGET SDL3-jar)
-      install(FILES "${SDL3_BINARY_DIR}/SDL3.jar"  "${SDL3_BINARY_DIR}/SDL3-${SDL3_VERSION}.jar"
+      set(SDL_INSTALL_JAVADIR "${CMAKE_INSTALL_DATAROOTDIR}/java" CACHE PATH "Path where to install java clases + java sources")
+      install(FILES $<TARGET_PROPERTY:SDL3-jar,INSTALL_FILES>
         DESTINATION "${SDL_INSTALL_JAVADIR}/SDL3")
+      configure_package_config_file(cmake/SDL3jarTargets.cmake.in SDL3jarTargets.cmake
+        INSTALL_DESTINATION "${SDL_SDL_INSTALL_CMAKEDIR}"
+        PATH_VARS SDL_INSTALL_JAVADIR
+        NO_CHECK_REQUIRED_COMPONENTS_MACRO
+        INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}"
+      )
+      install(FILES "${CMAKE_CURRENT_BINARY_DIR}/SDL3jarTargets.cmake"
+        DESTINATION "${SDL_SDL_INSTALL_CMAKEDIR}"
+      )
     endif()
     if(TARGET SDL3-javasources)
       install(FILES  "${SDL3_BINARY_DIR}/SDL3-${SDL3_VERSION}-sources.jar"

cmake/SDL3Config.cmake.in

···
   endif()
 endif()
 
+if(ANDROID AND EXISTS "${CMAKE_CURRENT_LIST_DIR}/SDL3jarTargets.cmake")
+  include("${CMAKE_CURRENT_LIST_DIR}/SDL3jarTargets.cmake")
+  set(SDL3_Jar_FOUND TRUE)
+endif()
+
 if(SDL3_SDL3-shared_FOUND OR SDL3_SDL3-static_FOUND)
   set(SDL3_SDL3_FOUND TRUE)
 endif()

cmake/SDL3jarTargets.cmake.in

···
+@PACKAGE_INIT@
+
+set_and_check(SDL3_JAR "@PACKAGE_SDL_INSTALL_JAVADIR@/SDL3/SDL3-@SDL3_VERSION@.jar")
+
+if(NOT TARGET SDL3::Jar)
+  add_library(SDL3::Jar INTERFACE IMPORTED)
+  set_property(TARGET SDL3::Jar PROPERTY JAR_FILE "${SDL3_JAR}")
+endif()
+
+unset(SDL3_JAR)

cmake/test/CMakeLists.txt

···
 add_executable(gui-whatever WIN32 main_gui.c)
 target_link_libraries(gui-whatever PRIVATE SDL3::SDL3)
 
+if(ANDROID)
+    find_package(SDL3 REQUIRED CONFIG COMPONENTS Jar)
+endif()
+
 feature_summary(WHAT ALL)

test/CMakeLists.txt

···
     )
 endif()
 
-if(ANDROID AND TARGET SDL3-jar)
+if(ANDROID AND TARGET SDL3::Jar)
     list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../cmake/android")
     find_package(SdlAndroid MODULE)
     if(SdlAndroid_FOUND)
···
                 COMMAND ${CMAKE_COMMAND} -E make_directory "${classes_path}"
                 COMMAND ${Java_JAVAC_EXECUTABLE}
                     -source 1.8 -target 1.8
-                    -bootclasspath "$<TARGET_PROPERTY:SDL3-jar,OUTPUT>"
+                    -bootclasspath "$<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>"
                     "${JAVA_PACKAGE_DIR}/SDLEntryTestActivity.java"
                     "${JAVA_PACKAGE_DIR}/SDLTestActivity.java"
                     $<TARGET_PROPERTY:${TEST}-apk-linked,JAVA_R>
-                    -cp "$<TARGET_PROPERTY:SDL3-jar,OUTPUT>:${path_android_jar}"
+                    -cp "$<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>:${SDL_ANDROID_PLATFORM_ANDROID_JAR}"
                     -d "${classes_path}"
                 COMMAND ${Java_JAR_EXECUTABLE} cf "${OUT_JAR}" -C "${classes_path}" .
-                DEPENDS $<TARGET_PROPERTY:${TEST}-apk-linked,OUTPUTS> "$<TARGET_PROPERTY:SDL3-jar,OUTPUT>" "${JAVA_PACKAGE_DIR}/SDLTestActivity.java" "${JAVA_PACKAGE_DIR}/SDLEntryTestActivity.java"
+                DEPENDS $<TARGET_PROPERTY:${TEST}-apk-linked,OUTPUTS> "$<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>" "${JAVA_PACKAGE_DIR}/SDLTestActivity.java" "${JAVA_PACKAGE_DIR}/SDLEntryTestActivity.java"
             )
             add_custom_target(${TEST}-jar DEPENDS "${OUT_JAR}")
             set_property(TARGET ${TEST}-jar PROPERTY OUTPUT "${OUT_JAR}")
···
                 OUTPUT "${classes_dex}"
                 COMMAND SdlAndroid::d8
                     $<TARGET_PROPERTY:${TEST}-jar,OUTPUT>
-                    $<TARGET_PROPERTY:SDL3-jar,OUTPUT>
-                    --lib "${path_android_jar}"
+                    $<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>
+                    --lib "${SDL_ANDROID_PLATFORM_ANDROID_JAR}"
                     --output "${dexworkdir}"
-                DEPENDS $<TARGET_PROPERTY:${TEST}-jar,OUTPUT> $<TARGET_PROPERTY:SDL3-jar,OUTPUT>
+                DEPENDS $<TARGET_PROPERTY:${TEST}-jar,OUTPUT> $<TARGET_PROPERTY:SDL3::Jar,JAR_FILE>
             )
             add_custom_target(${TEST}-dex DEPENDS "${classes_dex}")
             set_property(TARGET ${TEST}-dex PROPERTY OUTPUT "${classes_dex}")