unresolved extern

[shoonya]

hi,

there is a function defined in

abc.c

and prototype is present in abc.h

i want to call this function from another module, so i included the abc.h file along with correct path, but tehn also it's giving the error

unresolved external symbol foo referenced in function another_functio n

[donbock]

This looks like a linker error, not a compiler error. How you resolve this is specific to your compiler/IDE.

(Assume that the other module you mention is called def.c)

For example, if you were using Gnu C on unix you might issue this command:
> gcc -o myprogram abc.c def.c

or this sequence of commands:
> gcc -c abc.c
> gcc -c def.c
> gcc -o myprogram abc.o def.o

The error you reported suggests that the linker was not told to include abc.o.

[shoonya]

thanks donbock

I am using Microsoft visual studio

shoonya

[weaknessforcats]

Shoonya: Is this a compiler generated error or a linker generated error?

If the error starts with C it is a compiler error. If it starts with L it is a linker error.

It's important to know what kind of error it is. Maybe you could post a piece of what you are doing along wuth the error you are getting.

[shoonya]

thanks weaknessforcats

the problem is solved now,
1>
i was not mentioning the function in the .def file [where functions that needs to be exported are kept]

2>
I was not including the location of library [.lib file] of the other module

and it was linking error

Shoonya