This is the mail archive of the
mailing list for the Cygwin project.
Re: DLL and external symbols
Larry Hall wrote:
At 04:35 PM 12/30/2003, Jani Tiainen you wrote:
I'm sure that this has been answered several times, but I'll ask again because couldn't find any solution by myself.
I would like to build DLL (or any other sort of library) that refers to external symbols in main application.
So far I have been able to build non-working constructs. =)
Now how I can get this working, or is it possible at all?
It's possible but you have to move "funcInMain()" into the DLL with
"funcInMyLib()" or into another DLL. That's the straight-forward
Yes, that one I knew already. Problem isn't actually function, in my
real case it's more like having some globals that libraries should be
able to read.
So let's extend this main.c a little bit:
/* Global that is set here and printed from DLL */
int anotherValue = 0;
/* Function in DLL */
extern void funcInMyLib(int);
void funcInMain(int i)
printf("funcInMain(%ld) (anotherValue=%d)\n", i, anotherValue);
int main(int argc, char **argv)
antoherValue = 123;
Now, that's what I really want to do, or at least something equivalent,
more portable solution. (I'm really trying to port bigger application
that has plugin modules built like this.)
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html