Error compiling opa file

I'm new to Opa (and complied languages) - normally develop web apps with Python.

I'm following the intro tutorial at http://doc.opalang.org/index.html#_introducing_opa but my hello_chat.opa file won't compile when I run "opa hello_chat.opa". I get the following error:

/usr/bin/ld: cannot find -lgdbm_compat collect2: ld returned 1 exit status File "caml_startup", line 1, characters 0-1: Error: Error du开发者_高级运维ring linking make: * [native] Error 2 error during ocaml compilation -- the command was : make --makefile=Makefile -W Makefile -j 7 native -s

I'm on Debian 6.0.2. I installed opa per the instructions at "2.1.2. Ubuntu Linux, Debian Linux" in the intro tutorial linked above.

Lua is not installed. However, liblua5.1-0 is installed (if that is even relevant).

Seems we have a new dependency for Opa : libgdbm-dev

Try installng it ;)

For your information (from the opa owasp list) :

Concerning libgdbm-dev, it's a rather new dependency and we are not sure we want to keep it. At least we will make it an official dependency for future packages.

I think this dependency is no longer necessary in the latest stable build. Which version do you use (opa --version) ? Check http://opalang.org and download Build 569