goupx - Fix golang Linux ELF executables to work with upx
Update: 2016/03/10
As far as I (pwaller) know, goupx is no longer necessary for Linux binaries since it was fixed in
go1.6.
About
Installation: go get github.com/pwaller/goupx
(or if you don't want to do it with root, GOPATH=${HOME}/.local go get github.com/pwaller/goupx will install it to ${HOME}/.local/bin/goupx).
Usage: goupx [filename]
Fixes the PT_LOAD offset of [filename] and then runs upx.
This is only necessary for Linux ELF executables (not Mach-O executables or windows binaries, for example).
Based on code found on the upx bugtracker.
MIT licensed.
Fixes the following issue
$ upx [linux ELF go binary]
Ultimate Packer for eXecutables
Copyright (C) 1996 - 2011
UPX 3.08 Markus Oberhumer, Laszlo Molnar & John Reiser Dec 12th 2011
File size Ratio Format Name
-------------------- ------ ----------- -----------
upx: goupx: EOFException: premature end of file
Packed 1 file: 0 ok, 1 error.
Typical compression ratio
Resulting filesizes are typically 25% of the original go executable. Your mileage my vary.