1. Download the latest version of Erlang. In my case, it was R13B02-1, so I got a file named otp_src_R13B02-1.tar.gz
2. After decompressing the file:

$ cd otp_src_R12B-2
$. /configure
$ make
$ sudo make install

These are the standard steps, but I had a problem with the “make” command. I got the following error:

gen/wxe_events.cpp: In function ‘void initEventTable()’:
gen/wxe_events.cpp:277: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_MIDDLE_DOWN’ was not declared in this scope
gen/wxe_events.cpp:278: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_MIDDLE_UP’ was not declared in this scope
gen/wxe_events.cpp:279: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_RIGHT_DOWN’ was not declared in this scope
gen/wxe_events.cpp:280: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_RIGHT_UP’ was not declared in this scope
gen/wxe_events.cpp:281: error: ‘wxEVT_COMMAND_AUINOTEBOOK_PAGE_CLOSED’ was not declared in this scope
gen/wxe_events.cpp:282: error: ‘wxEVT_COMMAND_AUINOTEBOOK_DRAG_DONE’ was not declared in this scope
gen/wxe_events.cpp:283: error: ‘wxEVT_COMMAND_AUINOTEBOOK_BG_DCLICK’ was not declared in this scope
make[4]: *** [i386-apple-darwin9.8.0/wxe_events.o] Error 1
make[3]: *** [release] Error 2
make[2]: *** [release] Error 2
make[1]: *** [release] Error 2
make: *** [install.libs] Error 2

The solution was to build Erlang without wxwidget support, so the steps I followed were:

$ cd otp_src_R12B-2
$. /configure
$ touch lib/wx/SKIP
$ make
$ sudo make install

{
“\UF729″ = “moveToBeginningOfLine:”;
“$\UF729″ = “moveToBeginningOfLineAndModifySelection:”;
“\UF72B” = “moveToEndOfLine:”;
“$\UF72B” = “moveToEndOfLineAndModifySelection:”;
“\UF72C” = “pageUp:”;
“\UF72D” = “pageDown:”;
}

Save the file as DefaultKeyBinding.dict into your ~/Library/KeyBindings directory and reboot your Mac.

open -e ~/.profile

In case you dont have a .profile file, you have to create it:

touch ~/.profile

You have to include a line like this:

export PATH=(path-you-want-to-add):$PATH

For example, lets imagine you want to add the file whatever.jar, located in your Documents folder. You would write:

export PATH=~/Documents/whatever.jar:$PATH

Easy, isnt it?