Re: [Swarm-Support] Linking error: collect2: ld returned 1 exit status

[Marcus G. Daniels]

Crile Doscher wrote:

> No previous errors at least that I can see, though there are a few 
> warnings.  If it will help, here's all the make output:

The lines below are all errors.  Perhaps you have ElevCell or 
CellSurvace twice in your Makefile?

ModelSwarm.o(.text+0x1510):ModelSwarm.m: multiple definition of 
`___objc_class_name_ElevCell'
main.o(.text+0xaac):main.m: first defined here
ModelSwarm.o(.text+0x150c):ModelSwarm.m: multiple definition of 
`___objc_class_name_CellSurface'
main.o(.text+0xaa8):main.m: first defined here
ObserverSwarm.o(.text+0x1650):ObserverSwarm.m: multiple definition of 
`___objc_class_name_ElevCell'
main.o(.text+0xaac):main.m: first defined here
ObserverSwarm.o(.text+0x164c):ObserverSwarm.m: multiple definition of 
`___objc_class_name_CellSurface'
main.o(.text+0xaa8):main.m: first defined here
Cell.o(.text+0xf00):Cell.m: multiple definition of 
`___objc_class_name_ElevCell'
main.o(.text+0xaac):main.m: first defined here
Cell.o(.text+0xefc):Cell.m: multiple definition of 
`___objc_class_name_CellSurface'
main.o(.text+0xaa8):main.m: first defined here
CellSurface.o(.text+0x96c):CellSurface.m: multiple definition of 
`___objc_class_name_ElevCell'
main.o(.text+0xaac):main.m: first defined here
CellSurface.o(.text+0x968):CellSurface.m: multiple definition of 
`___objc_class_name_CellSurface'
main.o(.text+0xaa8):main.m: first defined here
Cumec.o(.text+0xab0):Cumec.m: multiple definition of 
`___objc_class_name_ElevCell'
main.o(.text+0xaac):main.m: first defined here
Cumec.o(.text+0xaac):Cumec.m: multiple definition of 
`___objc_class_name_CellSurface'

The other messages:

Eneighbor.m: In function `-[Eneighbor next:]':
Eneighbor.m:27: warning: `nextNeighbor' might be used uninitialized in 
this function
Eneighbor.m: In function `-[Eneighbor previous:]':
Eneighbor.m:50: warning: `previousNeighbor' might be used uninitialized 
in this function

..are worth looking into, as they could be logic errors that may cause 
your program to malfunction, but are not fatal unless you compiled with 
-Werror.