Is this one of the TODOs?
$ sudo gem install arcadia
Building native extensions. This could take a while...
ERROR: Error installing arcadia:
ERROR: Failed to build gem native extension.
/usr/bin/ruby extconf.rb install arcadia
creating Makefile
make
gcc -I. -I/usr/lib/ruby/1.8/i686-linux -I/usr/lib/ruby/1.8/i686-linux
-I.
-D_FILE_OFFSET_BITS=64 -fPIC -g -O2 -c trace_nums.c
In file included from trace_nums.c:36:
/usr/lib/ruby/1.8/i686-linux/node.h:391: error: expected ‘=’, ‘,’, ‘;’,
‘asm’ or
‘__attribute__’ before ‘rb_jmpbuf_t’
/usr/lib/ruby/1.8/i686-linux/node.h:405: error: expected
specifier-qualifier-list before ‘rb_jmpbuf_t’
make: *** [trace_nums.o] Error 1
Hrm. For me with ruby installed via Ubuntu's apt-get...
rdp@rdp-vm:~$ sudo apt-get install libtcltk-ruby1.8
...
rdp@rdp-vm:~$ sudo gem install arcadia
Building native extensions. This could take a while...
Building native extensions. This could take a while...
Successfully installed columnize-0.3.0
Successfully installed linecache-0.43
Successfully installed ruby-debug-base-0.10.3
Successfully installed ruby-debug-0.10.3
Successfully installed arcadia-0.6.0
5 gems installed
Installing ri documentation for columnize-0.3.0...
Installing ri documentation for linecache-0.43...
Installing ri documentation for ruby-debug-base-0.10.3...
Installing ri documentation for ruby-debug-0.10.3...
Installing RDoc documentation for columnize-0.3.0...
Installing RDoc documentation for linecache-0.43...
Installing RDoc documentation for ruby-debug-base-0.10.3...
Installing RDoc documentation for ruby-debug-0.10.3...
rdp@rdp-vm:~$ arcadia
worked. My guess is that one of those dependencies isn't building for
some reason on your box but I'm not sure exactly why. I know
ruby-debug-base has some binary extensions, and possibly linecache.
Thanks.
-=r