CMake fix passing multiple paths to libdjinterop

CMakeLists.txt

@@ -1722,17 +1722,23 @@ if(ENGINEPRIME)
     set(DJINTEROP_INSTALL_DIR "${CMAKE_CURRENT_BINARY_DIR}/lib/libdjinterop-install")
     set(DJINTEROP_LIBRARY "lib/${CMAKE_STATIC_LIBRARY_PREFIX}djinterop${CMAKE_STATIC_LIBRARY_SUFFIX}")
     file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/download")
+
+    # CMake does not pass lists of paths properly to external projects.
+    # This is worked around by changing the list separator.
+    string(REPLACE ";" "|" PIPE_DELIMITED_CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH}")
+
     ExternalProject_Add(libdjinterop
       URL "https://github.com/xsco/libdjinterop/archive/0.15.1.tar.gz"
       URL_HASH SHA256=87b3e6c726c208333d55b7e7e3af0a7230c9ad9edb3ca0ca81feffe17b3fc008
       DOWNLOAD_DIR "${CMAKE_CURRENT_BINARY_DIR}/download/libdjinterop"
       INSTALL_DIR ${DJINTEROP_INSTALL_DIR}
+      LIST_SEPARATOR "|"
       CMAKE_ARGS
         -DBUILD_SHARED_LIBS=OFF
         -DCMAKE_SKIP_INSTALL_ALL_DEPENDENCY=ON
         -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
         -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-        -DCMAKE_PREFIX_PATH:PATH=${CMAKE_PREFIX_PATH}
+        -DCMAKE_PREFIX_PATH=${PIPE_DELIMITED_CMAKE_PREFIX_PATH}
         -DCMAKE_INSTALL_LIBDIR:PATH=lib
         -DCMAKE_MODULE_PATH:PATH=${CMAKE_MODULE_PATH}
         -DSYSTEM_SQLITE=${DJINTEROP_SYSTEM_SQLITE}