Recently need to work with Amazon S3 and i want to use the s3cmd command line client.
s3cmd : command line S3 client

But it requires encryption program which i can’t find in my Mac machine. Luckily i found a very detail installation guide.
HOWTO: Build GnuPG on OS X

Here is the brief summary of the installation.
1. Download the source code

• curl -O ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-1.4.11.tar.gz

2. Extract the archive

• tar zxf gnupg-1.4.11.tar.gz

3. Go to the extracted directory and run the following commands

• ./configure
• make
• make check
• sudo make install

4. The installation is done but i get the following error when i use the gpg command

• gpg: /Users/kit/.gnupg/gpg.conf:233: invalid auto-key-locate list

5. It is resolved after i commented the following line in ~/.gnupg/gpg.conf

• auto-key-locate cert pka ldap hkp://keys.gnupg.net

Done =)

Reference:

• HOWTO: Build GnuPG on OS X
• The GNU Privacy Guard