[Click] Compile error using ELEMENT_PROVIDES

[Xiaojun Feng]

Eddie, thanks very much!

I think that's the problem. I have fixed it.

On Sat, Mar 28, 2009 at 8:08 AM, Eddie Kohler <kohler at cs.ucla.edu> wrote:

> Xiaojun your class is not an element since it does not inherit from "class
> Element", and your .cc file does not #include <click/config.h>
>
> E
>
>
>
> Xiaojun Feng wrote:
>
>> I am using an open source click element and it works very well.
>>
>> Now I want to add a new member variable to the elememt.
>>
>> I define a new class in the file packetsrc.hh:
>>
>> #ifndef PACKETSRC_HH
>> #define PACKETSRC_HH
>>
>> CLICK_DECLS
>>
>> class PacketSrc {        // line 6
>>    public:
>>        bool addPacket(char* data);
>>
>>        PacketSrc();
>>        ~PacketSrc();
>>
>>    private:
>>        char* packetdata;
>>
>> };
>>
>> CLICK_ENDDECLS  // line 18
>>
>> #endif //PACKETSRC_H
>>
>> and the implementation in packetsrc.cc:
>>
>> #include "packetsrc.hh"
>>
>> CLICK_DECLS
>>
>> PacketSrc::PacketSrc() {}
>> PacketSrc::~PacketSrc() {}  // line 6
>>
>> bool PacketSrc::addPacket(char* data)  // line 8
>> {
>>    return false;
>> }
>>
>> CLICK_ENDDECLS  // line 13
>> ELEMENT_PROVIDES(PacketSrc)
>>
>> Then I use make elemlist to update the element.conf.
>> But after 'make', there are several errors:
>>
>>  CXX ../elements/local/packetsrc.cc
>> In file included from ../elements/local/packetsrc.cc:1:
>> ../elements/local/packetsrc.hh:6: error: expected constructor, destructor,
>> or type conversion before ‘class’
>> ../elements/local/packetsrc.hh:18: error: ‘CLICK_ENDDECLS’ does not name a
>> type
>> ../elements/local/packetsrc.cc:6: error: expected constructor, destructor,
>> or type conversion before ‘::’ token
>> ../elements/local/packetsrc.cc:8: error: ‘PacketSrc’ has not been declared
>> ../elements/local/packetsrc.cc:8: warning: unused parameter ‘data’
>> ../elements/local/packetsrc.cc:13: error: ‘CLICK_ENDDECLS’ does not name a
>> type
>> make[1]: *** [packetsrc.o] Error 1
>> make[1]: Leaving directory
>> `/media/work/fightfxj/thesis/linux_program/click-1.6.0/userlevel'
>> make: *** [userlevel] Error 2
>>
>> How does the first error happen? Did I do anything wrong to define the
>> class
>> PacketSrc?
>> I am just beginning to learn Click, maybe the question is kind of naive.
>>
>> So every comment will be helpful to me.
>> Thanks very much!
>>
>>


-- 
Xiaojun Feng