try escape the list?

cmake/AwsPrebuildDependency.cmake

@@ -26,17 +26,14 @@ function(aws_prebuild_dependency)
     file(MAKE_DIRECTORY ${depBinaryDir})
     message(STATUS "XXXXXXXXXXXX depBinaryDir ${depBinaryDir}")
     message(STATUS "XXXXXXXXXXXX CMAKE_COMMAND ${CMAKE_COMMAND}")
-    if(WIN32)
-        list(JOIN CMAKE_PREFIX_PATH ";" PREFIX_PATH_STR)
-    else()
-        list(JOIN CMAKE_PREFIX_PATH ":" PREFIX_PATH_STR)
-    endif()
+    list(JOIN CMAKE_PREFIX_PATH "\\;" PREFIX_PATH_STR)
     message(STATUS "XXXXXXXXXXXX PREFIX_PATH_STR ${PREFIX_PATH_STR}")
 
     # For execute_process to accept a dynamically constructed command, it should be passed in a list format.
     set(cmakeCommand "${CMAKE_COMMAND}")
     list(APPEND cmakeCommand -S ${AWS_PREBUILD_SOURCE_DIR})
     list(APPEND cmakeCommand -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE})
+    list(APPEND cmakeCommand -DCMAKE_PREFIX_PATH=${PREFIX_PATH_STR})
     list(APPEND cmakeCommand -DCMAKE_INSTALL_PREFIX=${depInstallDir})
     list(APPEND cmakeCommand -DCMAKE_INSTALL_RPATH=${CMAKE_INSTALL_RPATH})
     list(APPEND cmakeCommand -DBUILD_SHARED_LIBS=${BUILD_SHARED_LIBS})
@@ -47,8 +44,6 @@ function(aws_prebuild_dependency)
     endif()
 
     message(STATUS "XXXXXXXXXXXX cmakeCommand ${cmakeCommand}")
-    # Configure dependency project.
-    set(ENV{CMAKE_PREFIX_PATH} ${PREFIX_PATH_STR})
     execute_process(
         COMMAND ${cmakeCommand}
         WORKING_DIRECTORY ${depBinaryDir}