Re: tests on AIX 5

[Charles Wilson]

Daniel Reed wrote:
> On 2004-11-16T10:15-0600, Bob Friesenhahn wrote:
> ) loaded.  If it did locate a symbol from the main exectable, then that
> ) indicates that symbols from the main executable may be polluting the
> ) namespace, which could lead to wrong behavior.
>
> This is the case on at least Solaris, Linux, FreeBSD, and OS 10.
>
> As of the summer of 2003, in Cygwin, symbols in the executable were not
> available to dynamic libraries, but libraries had one symbol space (even if
> they were not linked together, but linked against the executable or dlopened
> by the executable). In order to get single-symbol-space behavior, the
> executable can be linked as a dynamic library (with main() renamed to
> main_stub()), and a stub executable could be linked against that library
> (with main() just calling main_stub()).

This shouldn't be necessary any longer.  This patch went in at some 
point (but I don't remember when):

http://sources.redhat.com/ml/binutils/2002-12/msg00334.html

The trick is, tho, when linking an application, there is no 
*auto-EXport* of symbols.  You have to explicitly mark the symbols you 
want exported as declspec(dllexport) -- or use the --export-all flag.

(When linking a DLL, the "normal" procedure on modern cygwin is to NOT 
explicitly declspec() anything; when linking a dll under those 
conditions, auto-EXport kicks in...)

--
Chuck