View the most recent changes for the upx port at: upx.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for upx.
The raw portfile for upx 3.04 is located here:
http://upx.darwinports.com/dports/archivers/upx/Portfile
Find related portfiles with the unique DarwinPorts.com search feature.
Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/upx

The upx Portfile 59075 2009-10-09 11:10:01Z jmr macports.org $

PortSystem 1.0

Name: upx
Version: 3.04
Revision: 1
Category: archivers
Maintainers: gmail.com:cedric.luthi
Description: compress or expand executable files
Long Description: UPX is a free, portable, extendable, high-performance executable packer for several different executable formats
Homepage: http://upx.sourceforge.net/
Platform: darwin
Master Sites: ${homepage}/download/

distname ${name}-${version}-src
use_bzip2 yes
Checksums: [suffix ${distname}] md5 68d662b1f831335460f9bfdbf632c6ce sha1 76e509efb52e1b891e929601f7cb8acbe349445e rmd160 066103c97aa3a624af2903f3e23fb0fe952bffb7

Patch Files: patch-p_mach.cpp

universal_variant no
use_configure no
build.env CPPFLAGS="-I${prefix}/include" LDFLAGS="-L${prefix}/lib"

depends_lib port:ucl port:zlib

# pod2man, pod2text, and pod2html are used to generate documentation
depends_build bin:pod2man:perl5 bin:pod2text:perl5 bin:pod2html:perl5

post-configure {
# Ensure that the correct compiler is used
reinplace "s|CXX = .*|CXX = ${configure.cxx}|" ${worksrcpath}/src/Makefile
}

destroot {
xinstall -m 755 ${worksrcpath}/src/upx.out ${destroot}${prefix}/bin/upx

xinstall -m 644 ${worksrcpath}/doc/upx.1 ${destroot}${prefix}/share/man/man1

xinstall -m 755 -d ${destroot}${prefix}/share/doc/${name}
xinstall -m 644 -W ${worksrcpath}/doc upx.doc upx.html ${destroot}${prefix}/share/doc/${name}
xinstall -m 644 -W ${worksrcpath} BUGS COPYING LICENSE NEWS PROJECTS README README.1ST README.SRC THANKS TODO ${destroot}${prefix}/share/doc/${name}
}

Variant: lzma description {Support LZMA compression} {
set lzma-distfile [suffix lzma465]
master_sites-append sourceforge:sevenzip:lzma
distfiles-append ${lzma-distfile}:lzma
checksums-append ${lzma-distfile} md5 29d5ffd03a5a3e51aef6a74e9eafb759 sha1 5ec1c4606fec88c770a9712073e83916f8aed173 rmd160 70953d4ee8542addf566953e0ed62e9c75a016b5
build.env-append UPX_LZMADIR=${workpath}
}

livecheck.type regex
livecheck.url ${homepage}
livecheck.regex Version (\\d(\\.\\d+)*)

If you haven't already installed Darwin Ports, you can find easy instructions for doing so at the main Darwin Ports page.
Once Darwin Ports has been installed, in a terminal window and while online, type the following and hit return:

%  cd /opt/local/bin/portslocation/dports/upx
%  sudo port install upx  
Password: 

You will then be prompted for your root password, which you should enter. You may have to wait for a few minutes while the software is retrieved from the network and installed for you. Y ou should see something that looks similar to:

--->  Fetching upx
--->  Verifying checksum for upx
--->  Extracting upx
--->  Configuring upx
--->  Building upx with target all

--->  Staging upx into destroot

--->  Installing upx

- Make sure that you do not close the terminal window while Darwin Ports is working. Once the software has been installed, you can find further information about using upx with these commands:

%  man upx
%  apropos upx
%  which upx
%  locate upx

 Where to find more information: