MDEV-28107 S3 doesn't build if CURL is in non-default location

storage/maria/CMakeLists.txt

@@ -122,9 +122,9 @@ IF(NOT PLUGIN_S3 STREQUAL NO AND NOT WIN32)
 ENDIF()
 
 IF (CURL_FOUND)
-  LINK_DIRECTORIES(${PC_CURL_LIBDIR})
+  INCLUDE_DIRECTORIES(${CURL_INCLUDE_DIRS})
   MYSQL_ADD_PLUGIN(s3 ha_s3.cc ${S3_SOURCES} COMPONENT s3-engine
-    LINK_LIBRARIES curl z STORAGE_ENGINE NOT_EMBEDDED CONFIG s3.cnf)
+    LINK_LIBRARIES ${CURL_LIBRARIES} z STORAGE_ENGINE NOT_EMBEDDED CONFIG s3.cnf)
 ENDIF()
 
 SET(CPACK_RPM_s3-engine_PACKAGE_SUMMARY "Amazon S3 archival storage engine for MariaDB" PARENT_SCOPE)