• Michael <Michael_member pathlink.com> Feb 18 2004
• Scott Michel <scottm cs.ucla.edu> Feb 18 2004

Michael <Michael_member pathlink.com> writes:

Is there a way to perform back linking with OPTLINK?

What I'm getting at is that I'd like my executable to export it's symbols so
that DLLs loaded at runtime have access to them. I'll be linking DLLs at runtime
with LoadLibrary() and the DLL code may have to access symbols in the
executable.

GNU ld has an option "--export-dynamic" which tells the linker to export all
symbols of the executable so they can be seen by dynamic libraries loaded at
runtime. Other linkers I've used, in particular Solaris ld, always perform
exporting of symbols by default. Is this how OPTLINK works?

Is there an equivalent switch to "--export-dynamic" available with OPTLINK?

Thanks for the help,
Michael

Scott Michel <scottm cs.ucla.edu> writes:

Michael wrote:
 Is there a way to perform back linking with OPTLINK?
 
 What I'm getting at is that I'd like my executable to export it's symbols
 so that DLLs loaded at runtime have access to them. I'll be linking DLLs
 at runtime with LoadLibrary() and the DLL code may have to access symbols
 in the executable.
 
 GNU ld has an option "--export-dynamic" which tells the linker to export
 all symbols of the executable so they can be seen by dynamic libraries
 loaded at runtime. Other linkers I've used, in particular Solaris ld,
 always perform exporting of symbols by default. Is this how OPTLINK works?
 
 Is there an equivalent switch to "--export-dynamic" available with
 OPTLINK?


This isn't an OPTLINK problem. __declspec(dllexport) the symbols you want to
export from the executable, make sure that the header changes this to
__declspec(dllimport) when used in the DLL source. You will also need to
create an export library from the executable, but I'm not sure how to go
about doing this: DLLs are linked and all symbols must be defined (no
unresolved symbols, -fno-undefined in GNU ld terms.) Generally speaking, an
import library is only created for DLLs.


-scooter