Ruby ext

extconf

require 'mkmf'

HEADER_DIRS = ["/opt/local/include"]
LIB_DIRS = ["/opt/local/lib"]

create_makefile("webkitrb")

gistfile1.txt

#include <ruby.h>

static VALUE t_test(VALUE self, VALUE obj)
{
  return self;
}

VALUE cMyClass;
void Init_MyClass() {
  cMyClass = rb_define_class("MyClass", rb_cObject);
  rb_define_method(cMyClass, "test", t_test, 1);
}

Output

g++ -I. -I/Users/clockwize/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/i686-darwin10.8.0 -I/Users/clockwize/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/i686-darwin10.8.0 -I. -I/opt/local/include  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -arch x86_64 -g -Os -pipe -no-cpp-precomp  -fno-common -pipe -fno-common    -c MyClass.cpp
MyClass.cpp: In function ‘void Init_MyClass()’:
MyClass.cpp:11: error: invalid conversion from ‘VALUE (*)(VALUE, VALUE)’ to ‘VALUE (*)(...)’
MyClass.cpp:11: error:   initializing argument 3 of ‘void rb_define_method(VALUE, const char*, VALUE (*)(...), int)’