Merge topic 'UseJava-classpath-cross-compile'

7a373d5e UseJava: Fix classpath separator on WIN32 cross compilation (#15206)

Modules/UseJava.cmake

@@ -398,7 +398,7 @@ function(add_jar _TARGET_NAME)
         ${CMAKE_JAVA_LIBRARY_OUTPUT_PATH}
     )
 
-    if (WIN32 AND NOT CYGWIN AND CMAKE_HOST_SYSTEM_NAME MATCHES "Windows")
+    if (CMAKE_HOST_WIN32 AND NOT CYGWIN AND CMAKE_HOST_SYSTEM_NAME MATCHES "Windows")
         set(CMAKE_JAVA_INCLUDE_FLAG_SEP ";")
     else ()
         set(CMAKE_JAVA_INCLUDE_FLAG_SEP ":")