Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Date: Mon, 26 Sep 2005 21:38:45 +1200 From: Danny Smith Subject: Re; Visibility of compiler symbols between executables and DLLs To: nick.glencross@gmail.com Cc: Cygwin Reply-to: Danny Smith Message-id: <000f01c5c27e$181319e0$e66d65da@DANNY> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 7bit Nick Glencross wrote: > On many platforms compilation symbols in an executable are not made > visible to its Shared Library/DLLs by default, but this can often be > overridden with a compiler flag to change the policy. My question in a > nutshell then is whether cygwin has the ability to have a DLL access a > global variable within the executable that loads it? As an obvious > follow on, if yes, then how do you go about doing it? > http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/winsup/mingw/samples/dlltest/?c vsroot=src has an old example (ca 1998). You can find more recent examples, using 'gcc -shared' rather than dlltool, in cygwin archives. Danny -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/