Gems is not finding my id3.h file which is clearly inside of /usr/
local/include/id3.h. When I try to install I get the following
message:

> sudo gem install id3lib-ruby
Password:
Need to update 2 gems from http://gems.rubyforge.org
..
complete
Select which gem to install for your platform (i386-freebsd4)
 1. id3lib-ruby 0.5.0 (ruby)
 2. id3lib-ruby 0.5.0 (mswin32)
 3. id3lib-ruby 0.4.1 (mswin32)
 4. id3lib-ruby 0.4.1 (ruby)
 5. Skip this gem
 6. Cancel installation
> 1
Building native extensions.  This could take a while...
ERROR:  While executing gem ... (Gem::Installer::ExtensionBuildError)
    ERROR: Failed to build gem native extension.

ruby extconf.rb install id3lib-ruby
checking for main() in -lstdc++... yes
checking for main() in -lz... yes
checking for id3.h... no
You must have id3lib installed in order to use id3lib-ruby.
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/local/bin/ruby18
        --with-stdc++lib
        --without-stdc++lib
        --with-zlib
        --without-zlib


Gem files will remain installed in /usr/local/lib/ruby/gems/1.8/gems/
id3lib-ruby-0.5.0 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.8/gems/id3lib-ruby-0.5.0/
ext/gem_make.out

I printed out the log and I get:
have_library: checking for main() in -lstdc++... --------------------
yes

"cc -o conftest -I. -I/usr/local/lib/ruby/1.8/i386-freebsd4 -I.  -g -O
-pipe -D$
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))main; return
0; }
/* end */

--------------------

have_library: checking for main() in -lz... -------------------- yes

"cc -o conftest -I. -I/usr/local/lib/ruby/1.8/i386-freebsd4 -I.  -g -O
-pipe -D$
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))main; return
0; }
/* end */

--------------------

have_header: checking for id3.h... -------------------- no

"cc -E -I. -I/usr/local/lib/ruby/1.8/i386-freebsd4 -I.  -g -O -pipe -
DISERVER $
conftest.c:1: id3.h: No such file or directory
checked program was:
/* begin */
1: #include <id3.h>
/* end */

--------------------

any ideas? TIA!