View the most recent changes for the dact port at: dact.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for dact.
The raw portfile for dact 0.8.41 is located here:
http://dact.darwinports.com/dports/archivers/dact/Portfile
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Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/dact

The dact Portfile 57375 2009-09-10 08:16:41Z ryandesign macports.org $

PortSystem 1.0

Name: dact
Version: 0.8.41
Category: archivers
Platform: darwin
Maintainers: nomaintainer
Description: dynamic adaptive compression tool

Long Description: DACT attempts to create very efficient compressed files by attempting to use many different algorithms on each block until it finds the best for every block in the file.

Homepage: http://www.rkeene.org/oss/dact/
Master Sites: http://www.rkeene.org/files/oss/dact/release/

Checksums: md5 f6b33e18e9680c08835e93f8673dea8d sha1 a87db20ae7bf4ffd1b5d37c7e3be70c84661e379 rmd160 015544501df128da869f837b64579de53028a163

post-patch {
# checking how to create shared objects... cant
# configure: error: We are unable to make shared objects.

reinplace "s/ -bind_at_load//" ${worksrcpath}/configure

# Loadable objects are bundles on OS X

reinplace "s/=\\.so/=\\.bundle/g" ${worksrcpath}/Makefile.in
reinplace -E "s/\[\[:<:\]\]so\[\[:>:\]\]/bundle/g" ${worksrcpath}/Makefile.in ${worksrcpath}/Makefile.dep
reinplace -E "/AS_MODULE/s/(SHOBJLDFLAGS)/\\1:dynamiclib=bundle/" ${worksrcpath}/Makefile.in
reinplace -E "/for/s/\\(MODS\\)/(ALGO:.c=.bundle)/" ${worksrcpath}/Makefile.in

# ld: common symbols not allowed with MH_DYLIB output format with the -multi_module option
# module_shr.o definition of common _modules (size 1024)
# net_shr.o definition of common _dact_urls (size 3072)
# ui_shr.o definition of common _dact_ui_statusvar (size 128)

reinplace -E "s/^(void)/static \\1/" ${worksrcpath}/module.c
reinplace -E "/^extern void/d" ${worksrcpath}/module.h
reinplace -E "s/^(struct.*;)\$/static \\1/" ${worksrcpath}/net.c
reinplace -E "s/^(char.*;)\$/static \\1/" ${worksrcpath}/ui.c
}

depends_lib port:libmcrypt port:zlib port:bzip2 port:lzo

configure.args --mandir=${prefix}/share/man --disable-chkvers

destroot.destdir prefix=${destroot}${prefix}

post-destroot {
system "install_name_tool -id ${prefix}/lib/lib${name}.dylib ${destroot}${prefix}/lib/lib${name}.dylib"

set docdir ${prefix}/share/doc/${name}-${version}
xinstall -d ${destroot}${docdir}
xinstall -m 0644 -W ${worksrcpath} AUTHORS ChangeLog LICENSE README TODO TODO.ideas ${destroot}${docdir}
}

# gcc: -E, -S, -save-temps and -M options are not allowed with multiple -arch flags
universal_variant no

livecheck.type regex
livecheck.url ${homepage}
livecheck.regex ${name}-(\\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/dact
%  sudo port install dact  
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 dact
--->  Verifying checksum for dact
--->  Extracting dact
--->  Configuring dact
--->  Building dact with target all

--->  Staging dact into destroot

--->  Installing dact

- 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 dact with these commands:

%  man dact
%  apropos dact
%  which dact
%  locate dact

 Where to find more information: