extensions make error

[梁雅翔 <liangyx@ihep.ac.cn>]

Hi, everyone:
   My environment: redhat server 6.0, base3.14.12.5.
   I tried to install epics, base is ok. Thers is something wrong when I make extensions which is the Extensions TOP(New method).
   
   when I type "make" in /extensions, the message came out:
*****************************************
configure/CONFIG:18: ../base/configure/CONFIG: No file or directory 
configure/RULES_TOP:3: ../base/configure/RULES_TOP: No file or directory 
make: *** There are no rules to create a target“../base/configure
/RULES_TOP”。 stop
*****************************************
The bin file should have came out.

My directory structure:

base-3.14.12.5/
extensions/
    Makefile
    configure/
    src/
        Makefile
        extension1/
        extension2/
        ...

Do I do something wrong?
Thank you for your suggestion.

Best regards,
Liang