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 Message-ID: Date: Mon, 26 Sep 2005 09:39:02 +0100 From: Nick Glencross Reply-To: Nick Glencross To: cygwin@cygwin.com Subject: Visibility of compiler symbols between executables and DLLs MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id j8Q8dMmP015854 Guys, I've done some research on this and don't believe that it's a perennial question that keeps coming up! 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? Everything that I've seen indicates that this isn't possible, due to limitations imposed by DLLs, but would appreciate believing this with a bit more confidence, Thanks in advance, Nick -- 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/