Date: Wed, 18 Jun 2003 10:01:18 -0400 From: Jake Burkholder <jake@locore.ca> To: Joe Kelsey <joek@mail.flyingcroc.net> Cc: questions@freebsd.org Subject: Re: Tools to modify shared libraries Message-ID: <20030618140118.GA63039@locore.ca> In-Reply-To: <3EEE4717.2090409@mail.flyingcroc.net> References: <3EEE4717.2090409@mail.flyingcroc.net>
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Apparently, On Mon, Jun 16, 2003 at 03:39:19PM -0700, Joe Kelsey said words to the effect of; > Has anyone ever come across general-purpose tools for modifying shared > libraries? What I want to do is to edit the list of "needed" shared > libraries to correct the common mistakes that developers make in > creating shared objects with large lists of shared libraries. > > Specifically, I want to modify linux-flashplugin6/libflashplayer.so to > remove all of the idiotic references to shared libraries that the Flash > 6 developers added. Since this is a plugin for Mozilla, it does not > need to specify any extra shared libraries especially since Mozilla has > already loaded all of them! > > I want to do this to make Flash 6 work with flashpluginwrapper. If I > can remove the list of needed shared libraries from the DYNAMIC section > of the shared library, everyone will be that much closer to a real flash > 6 plugin for BSD. I've needed to do similar things to remove the interp section from static binaries with full dynamic symbol tables. I just wrote a C program that mmapped the elf file, parsed the headers and changed the p_type of the PT_INTERP program header entries to PT_NULL. You may be able to do something similar by changing the d_tag of the DT_NEEDED entries to some value larger than DT_COUNT so they will be ignored by the dynamic linker. Jake
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