Trying workaround

Author: JohanMabille

CMakeLists.txt

@@ -138,7 +138,7 @@ set(SPARROW_COMPILE_DEFINITIONS "" CACHE STRING "List of public compile definiti
 if (USE_DATE_POLYFILL)
     find_package(date CONFIG REQUIRED)
     list(APPEND SPARROW_INTERFACE_DEPENDENCIES date::date date::date-tz)
-    list(APPEND SPARROW_COMPILE_DEFINITIONS SPARROW_USE_DATE_POLYFILL)
+    list(APPEND SPARROW_COMPILE_DEFINITIONS -DSPARROW_USE_DATE_POLYFILL)
 endif()
 
 if(USE_LARGE_INT_PLACEHOLDERS)