PatchELF is a simple utility for modifing existing ELF executables and libraries. In particular, it can do the following: * Change the dynamic loader ("ELF interpreter") of executables: $ patchelf --set-interpreter /lib/my-ld-linux.so.2 my-program * Change the RPATH of executables and libraries: $ patchelf --set-rpath /opt/my-libs/lib:/other-libs my-program * Shrink the RPATH of executables and libraries: $ patchelf --shrink-rpath my-program This removes from the RPATH all directories that do not contain a library referenced by DT_NEEDED fields of the executable or library. For instance, if an executable references one library libfoo.so, has an RPATH "/lib:/usr/lib:/foo/lib", and libfoo.so can only be found in /foo/lib, then the new RPATH will be "/foo/lib". AUTHOR Copyright 2004, 2005, 2006, 2007, 2008 Eelco Dolstra . See COPYING for the license. HOMEPAGE http://nixos.org/patchelf.html BUGS The `strip' command from binutils generated broken executables when applied to the output of patchelf (if `--set-rpath' or `--set-interpreter' with a larger path than the original is used). This appears to be a bug in binutils (http://bugs.strategoxt.org/browse/NIXPKGS-85). RELEASE HISTORY 0.4 (June 4, 2008): * Support for growing the RPATH on dynamic libraries. * IA-64 support (not tested) and related 64-bit fixes. * FreeBSD support. * `--set-rpath', `--shrink-rpath' and `--print-rpath' now prefer DT_RUNPATH over DT_RPATH, which is obsolete. When updating, if both are present, both are updated. If only DT_RPATH is present, it is converted to DT_RUNPATH unless `--force-rpath' is specified. If neither is present, a DT_RUNPATH is added unless `--force-rpath' is specified, in which case a DT_RPATH is added. 0.3 (May 24, 2007): * Support for 64-bit ELF binaries (such as on x86_64-linux). * Support for big-endian ELF binaries (such as on powerpc-linux). * Various bugfixes. 0.2 (January 15, 2007): * Provides a hack to get certain programs (such as the Belastingaangifte 2005) to work. 0.1 (October 11, 2005): * Initial release.