Date: Fri, 7 Sep 2001 11:07:56 -0700 (PDT) From: Doug Ambrisko <ambrisko@ambrisko.com> To: Glenn Johnson <gjohnson@srrc.ars.usda.gov> Cc: John Polstra <jdp@polstra.com>, emulation@FreeBSD.ORG Subject: Re: LD_PRELOAD and linux binaries Message-ID: <200109071807.f87I7uc16743@ambrisko.com> In-Reply-To: <20010907111805.A38412@node7.cluster.srrc.usda.gov>
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Glenn Johnson writes: | On Fri, Sep 07, 2001 at 09:07:56AM -0700, John Polstra wrote: | | > In article <20010907102249.C37844@node7.cluster.srrc.usda.gov>, Glenn | > Johnson <gjohnson@srrc.ars.usda.gov> wrote: | > | > > I have been playing around with gdkxft and so have the LD_PRELOAD | > > environment variable set to point to the gdkxft library. The | > > problem is with Linux programs which obviously can not link the | > > FreeBSD library. The LD_PRELOAD environment variable needs to be | > > unset to run these. For those Linux programs that use a wrapper | > > script, such as netscape it is easy enough to just unset the | > > variable in the wrapper script. The problem is with Linux programs | > > that do not use a wrapper script. I know the wrapper scripts are | > > trivial to write but it does not seem practical to write a wrapper | > > for every such program. | > | > Is there some way you could leave LD_PRELOAD unset, and use wrapper | > scripts to invoke the applications with which you want to use gdkxft? | > That's what I'd recommend. I don't think the folks who dreamed up | > LD_PRELOAD had it in mind that you'd set it except for specific | > applications. See runsocks, for example. | | In this case, I am using the LD_PRELOAD variable for all gtk | applications. I have many more of those then of Linux programs so | either way it is basically the same problem. The gdkxft library being | loaded is for anti-aliasing fonts for gtk applications. I really do not | absolutely need this functionality but I was just wondering if there was | a good way to get around the Linux binary and LD_PRELOAD problem while I | was using it. Since LD_PRELOAD is really only used when you fire off another program then it is usually easy to rename that app the wants or doesn't want LD_PRELOAD set or set different and then replace the original name with a shell script modifying LD_PRELOAD as needed and then start the app. You can get tricky enough to do a file on the app. first and then set LD_PRELOAD to the appropriate path as needed. I've done this in the past and it worked okay. Not that LD_PRELOAD is not an kernel thing but a loader thing. Doug A. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-emulation" in the body of the message
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