Hi Kevin, On Tue, Jun 02, 2009 at 09:16:54AM +0100, Kevin Cowtan wrote: >> On the whole, I prefer to use rpath, because it makes it easier to >> harden an installation against the vagaries of what users have set in >> their environment - using an rpath like '$ORIGIN/../lib' to set a path >> relative to the location of the ELF can help with installation issues. >> OS X and Solaris both allow editing of the runpath inside an >> executable, so are streets ahead of Linux here. > > Which breaks the (currently rather desirable) behaviour that you can > unpack our Coot packages anywhere you want and they will just work.
I think the point Peter is making that one can use rpath _and_ $ORIGIN to exactly get this behaviour _without_ the need to add LD_LIBRARY_PATH settings! So you can unpack Coot packages anywhere you want with all its additional libraries refered with a relative rpath '$ORIGIN/../lib'. So this usage of rpath and $ORIGIN does not break the current behaviour at all. On the contrary: it avoids problems with other programs that might get called from within Coot and that would currently inherit the LD_LIBRARY_PATH that is set in the coot wrapper ... since you don't need to set LD_LIBRAYR_PATH at all. > I can see that might work well for people packaging Coot for a Linux > distro, where it will always be installed in the same place, but it > doesn't work for us. I guess this $ORIGIN feature isn't very widely known ... see e.g. http://www.scons.org/wiki/UsingOrigin http://linuxreviews.org/man/ld.so/ http://blogs.sun.com/dipol/entry/dynamic_libraries_rpath_and_mac http://www.codeshorts.ca/tag/osx/ It works great for us. Cheers Clemens -- *************************************************************** * Clemens Vonrhein, Ph.D. vonrhein AT GlobalPhasing DOT com * * Global Phasing Ltd. * Sheraton House, Castle Park * Cambridge CB3 0AX, UK *-------------------------------------------------------------- * BUSTER Development Group (http://www.globalphasing.com) ***************************************************************
