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Hi.
I have a C++ project that I can't compile.
These are the files:
iplookup.cc
pastebin.com/rFBgAN0r
iplookup.hh
pastebin.com/RDs85kYT
iproute.cc
pastebin.com/03wNgcUb
iproute.hh
pastebin.com/JXjNiJ7Q
main.cc
pastebin.com/tRE29zCJ
Makefile:
pastebin.com/72AXnZPx
When I do:
$ ...
- 07-14-2011 #1Just Joined!
- Join Date
- Mar 2011
- Posts
- 3
undefined reference to.... (g++ error message)
Hi.
I have a C++ project that I can't compile.
These are the files:
iplookup.cc
pastebin.com/rFBgAN0r
iplookup.hh
pastebin.com/RDs85kYT
iproute.cc
pastebin.com/03wNgcUb
iproute.hh
pastebin.com/JXjNiJ7Q
main.cc
pastebin.com/tRE29zCJ
Makefile:
pastebin.com/72AXnZPx
When I do:
$ make:all
I get:
pastebin.com/m7nRhmxM
I've found dozens of cases like this in google, but none worked for me.
Any suggestions??
Thanks a lot!!!
- 07-15-2011 #2Linux Guru
- Join Date
- Apr 2009
- Location
- I can be found either 40 miles west of Chicago, or in a galaxy far, far away.
- Posts
- 8,974
You are not linking a required library that contains the iproute class implementation.
Sometimes, real fast is almost as good as real time.
Just remember, Semper Gumbi - always be flexible!
- 07-15-2011 #3Just Joined!
- Join Date
- Mar 2011
- Posts
- 3
Thanks. Theoretically, that's the problem. However, the project compiles now. I just removed the "inline" modifiers and it works. Obviously, I didn't want to do that (for performance reasons).
The thing is that I don't know why it worked.
- 07-15-2011 #4Linux Guru
- Join Date
- Apr 2009
- Location
- I can be found either 40 miles west of Chicago, or in a galaxy far, far away.
- Posts
- 8,974
Yes, well I didn't look at your source code before. Inlines cannot be seen outside of the translation unit they are compiled into. IE, you would need to define them in the header file, otherwise they are only visible in the .cc file where they are defined. For get/set methods like many of these, it is best to simply implement them in the class definition (in the header file) as that will inline them automatically.
In any case, this is the reason why you were getting the undefined references.Sometimes, real fast is almost as good as real time.
Just remember, Semper Gumbi - always be flexible!


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