View the most recent changes for the asn1c port at: asn1c.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for asn1c.
The raw portfile for asn1c 0.9.21 is located here:
http://asn1c.darwinports.com/dports/lang/asn1c/Portfile
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Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/asn1c

The asn1c Portfile 57375 2009-09-10 08:16:41Z ryandesign macports.org $

PortSystem 1.0

Name: asn1c
Version: 0.9.21
Category: lang
Platform: darwin
Maintainers: mww
Description: ASN.1 to C compiler
Long Description: The asn1c is a Free ASN.1 to C compiler. It supports a wide range of ASN.1 syntaxes, including ISO/IEC/ITU ASN.1 1988, 1994, 1997, 2002 and later amendments. The basic supported syntax is ITU-T Rec. X.690 | ISO/IEC 8825-1 (2002).

Homepage: http://lionet.info/asn1c/
Master Sites: sourceforge:asn1c http://lionet.info/soft/
Checksums: sha1 22b8cbc73eab870ec2cab51997b3b0d422813624

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

test.run yes
test.target check

livecheck.type regex
livecheck.url http://lionet.info/asn1c/download.html
livecheck.regex asn1c-(\[0-9\\.\]+)\\.tar.gz

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/asn1c
%  sudo port install asn1c  
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 asn1c
--->  Verifying checksum for asn1c
--->  Extracting asn1c
--->  Configuring asn1c
--->  Building asn1c with target all

--->  Staging asn1c into destroot

--->  Installing asn1c

- 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 asn1c with these commands:

%  man asn1c
%  apropos asn1c
%  which asn1c
%  locate asn1c

 Where to find more information: