Trouble installing Symbolic package, GiNaC, etc

[Rob Redmon]

I'm getting these errors when trying to install the symbolic package:
octave-3.2.2:1> pkg install symbolic-1.0.9.tar.gz 
symbols.cc:37:25: error: ginac/ginac.h: No such file or directory

My computer:
OS X, 10.5.8

I did this:
1) Downloaded and installed prebuilt Octave binary 3.2.2 for OS X from 
http://octave.sourceforge.net

2) Realized I need the Symbolic library.

3) Installed GiNaC from MacPorts:
sudo port install ginac

--->  Fetching gmp
--->  Attempting to fetch gmp-4.2.4.tar.bz2 from http://mirrors.ibiblio.org/pub/mirrors/gnu/ftp/gnu/gmp
--->  Verifying checksum(s) for gmp
--->  Extracting gmp
--->  Configuring gmp
--->  Building gmp
--->  Staging gmp into destroot
--->  Installing gmp @4.2.4_3
--->  Activating gmp @4.2.4_3
--->  Cleaning gmp
--->  Fetching cln
--->  Attempting to fetch cln-1.2.2.tar.bz2 from http://distfiles.macports.org/cln
--->  Verifying checksum(s) for cln
--->  Extracting cln
--->  Configuring cln
--->  Building cln
--->  Staging cln into destroot
--->  Installing cln @1.2.2_0+test
--->  Activating cln @1.2.2_0+test
--->  Cleaning cln
--->  Fetching GiNaC
--->  Attempting to fetch ginac-1.4.4.tar.bz2 from http://distfiles.macports.org/GiNaC
--->  Verifying checksum(s) for GiNaC
--->  Extracting GiNaC
--->  Configuring GiNaC
--->  Building GiNaC
--->  Staging GiNaC into destroot
--->  Installing GiNaC @1.4.4_0+test
--->  Activating GiNaC @1.4.4_0+test
--->  Cleaning GiNaC

4) Tried to install the symbolic library:
octave-3.2.2:1> pkg install symbolic-1.0.9.tar.gz 
symbols.cc:37:25: error: ginac/ginac.h: No such file or directory
ov-vpa.h:39: error: ‘GiNaC’ has not been declared
ov-vpa.h:39: error: expected ‘,’ or ‘...’ before ‘&’ token
...
hundreds of errors follow

5) Do I need to build and install Octave from source?

Thanks,

Rob