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PATCHELF(1) User Manuals PATCHELF(1)

NAME

patchelf - Modify ELF files

SYNOPSIS

patchelf OPTION FILE ...

DESCRIPTION

PatchELF is a simple utility for modifying existing ELF executables and libraries. It can change the dynamic loader ("ELF interpreter") of executables and change the RPATH of executables and libraries.

OPTIONS

The single option given operates on each FILE, editing in place.

Uses the given page size instead of the default.

Change the dynamic loader ("ELF interpreter") of executable given to INTERPRETER.

Prints the ELF interpreter of the executable.

Prints DT_SONAME entry of .dynamic section. Raises an error if DT_SONAME doesn't exist.

Sets DT_SONAME entry of a library to SONAME.

Change the RPATH of the executable or library to RPATH.

Removes the DT_RPATH or DT_RUNPATH entry of the executable or library.

Remove 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".

Combined with the "--shrink-rpath" option, this can be used for further rpath tuning. For instance, if an executable has an RPATH "/tmp/build-foo/.libs:/foo/lib", it is probably desirable to keep the "/foo/lib" reference instead of the "/tmp" entry.

Prints the RPATH for an executable or library.

Forces the use of the obsolete DT_RPATH in the file instead of DT_RUNPATH. By default DT_RPATH is converted to DT_RUNPATH.

Adds a declared dependency on a dynamic library (DT_NEEDED). This option can be give multiple times.

Replaces a declared dependency on a dynamic library with another one (DT_NEEDED). This option can be give multiple times.

Removes a declared dependency on LIBRARY (DT_NEEDED entry). This option can be given multiple times.

Marks the object that the search for dependencies of this object will ignore any default library search paths.

Set the output file name. If not specified, the input will be modified in place.

Prints details of the changes made to the input file.

Shows the version of patchelf.

AUTHOR

Eelco Dolstra <e.dolstra@tudelft.nl>

SEE ALSO

elf(5), ld.so(8)

JUNE 2010 PATCHELF