Hello,
It's my pleasure to inform you that Ruby/DL2 has come out.
http://rubyforge.org/projects/ruby-dl2/
I made it work with both of ruby-1.8 and ruby-1.9. Please try
it and let me know what you think except for incompatibility
between Ruby/DL and Ruby/DL2. I have a plan to replace Ruby/DL
of ruby-1.9 with Ruby/DL2 after hearing serveral opinions.
Best regards,
P.S.
I'd like you to read test/test_import.rb instead of a tutorial,
since there is no documentation about Ruby/DL2.
Installing with ruby 1.9.0 (2005-01-27) [i686-linux],
tim@alien:~/d/ruby-dl2-0.0$ ruby extconf.rb
checking for dlfcn.h... yes
checking for main() in -ldl... yes
checking for dlopen()... yes
checking for dlclose()... yes
checking for dlsym()... yes
checking for dlerror()... yes
creating Makefile
/usr/local/stow/ruby-cvs//lib/ruby/1.9/mkmf.rb:875: warning: global variable `$preload' not initialized
tim@alien:~/d/ruby-dl2-0.0$ make
gcc -fPIC -g -O2 -fno-defer-pop -fno-omit-frame-pointer -I. -I/usr/local/stow/ruby-cvs//lib/ruby/1.9/i686-linux -I/usr/local/stow/ruby-cvs//lib/ruby/1.9/i686-linux -I. -DHAVE_DLFCN_H -DHAVE_DLOPEN -DHAVE_DLCLOSE -DHAVE_DLSYM -DHAVE_DLERROR -c cfunc.c
gcc -fPIC -g -O2 -fno-defer-pop -fno-omit-frame-pointer -I. -I/usr/local/stow/ruby-cvs//lib/ruby/1.9/i686-linux -I/usr/local/stow/ruby-cvs//lib/ruby/1.9/i686-linux -I. -DHAVE_DLFCN_H -DHAVE_DLOPEN -DHAVE_DLCLOSE -DHAVE_DLSYM -DHAVE_DLERROR -c cptr.c
generating callback.h
../mkcallback.rb:126:in `%': too many arguments for format string (ArgumentError)
from ./mkcallback.rb:126
from ./mkcallback.rb:111:in `each'
from ./mkcallback.rb:111
from ./mkcallback.rb:110:in `each'
from ./mkcallback.rb:110
from ./mkcallback.rb:109:in `each'
from ./mkcallback.rb:109
from ./mkcallback.rb:100:in `each'
from ./mkcallback.rb:100
make: *** [callback.h] Error 1
(NB: At this point callback.h exists.)
If we run make again, the build succeeds but trying to require 'dl' produces
irb: relocation error:
/usr/local/stow/ruby-cvs//lib/ruby/site_ruby/1.9/i686-linux/dl.so: undefined
symbol: rb_dl_init_callbacks
Apart from fixing the bug is causing the error, I guess mkcallback.rb
should delete callback.h if an exception reaches the top-level.
The actual bug in question is caused by the line
return #{DLTYPE[ty][:conv] % "ret"};
Most of the time we have things like
INT => {
:name => 'int',
:type => 'int',
:conv => 'NUM2INT(%s)',
}
but there is also
VOID => {
:name => 'void',
:type => 'void',
:conv => "",
}
Thanks for all your work. Ruby/DL has long been my favourite Ruby extension
