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 X-Injected-Via-Gmane: http://gmane.org/ To: cygwin@cygwin.com Path: not-for-mail From: Shankar Unni Subject: Re: javac on cygwin Date: Mon, 13 Jan 2003 11:26:28 -0800 Lines: 24 Message-ID: <3E2312E4.2000006@cotagesoft.com> References: <20030104115231.62364.qmail@web10401.mail.yahoo.com> <5.2.0.9.2.20030104080555.01e83058@pop3.cris.com> <5.2.0.9.2.20030104161638.01fbee88@pop3.cris.com> <20030105013147.GC11814@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@main.gmane.org User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en Christopher Faylor wrote: > I remember speculating at one point about creating wrappers to the win32 > functions like CreateFile, MoveFile, etc. which would understand cygwin > paths. You could theoretically modify an .exe to load cygwin1.dll and > use the wrapper functions. Or you could use some of Windows hook > facilities to do that. Hmm. Would that even work? I remember trying, way back when, to provide a checking malloc library on Windows, and then discovering that there was *no* way of intercepting malloc() calls *inside LIBC itself*. In the Windows PE world (unlike the ELF world), a call to a routine that lives inside the same DLL is automatically bound to the local copy without any way to hijack the call. Thus there's no way to play games with LD_LIBRARY_PATH (or PATH, rather) to load a malloc that'll hijack all calls successfully. And there's definitely nothing like the LD_PRELOAD mechanism to wrap existing pre-linked programs to inject support libraries into the lib list. So any CreateFile calls inside the windows libraries would always go to the built-in CreateFile. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/