extconf.rb in debugger-linecache-1.1.0

- old
+ new

@@ -1,26 +1,15 @@
 require "mkmf"
-require "ruby_core_source"
+require "debugger/ruby_core_source"
 
-if RUBY_VERSION >= "1.8"
-  if RUBY_RELEASE_DATE < "2005-03-22"
-    STDERR.print("Ruby version is too old\n")
-    exit(1)
-  end
-else
-  STDERR.print("Ruby version is too old\n")
-  exit(1)
+if RUBY_VERSION < '1.9'
+  abort("Ruby version is too old")
 end
 
 hdrs = proc {
   have_header("vm_core.h") and have_header("version.h")
 }
 
 dir_config("ruby")
-if !Ruby_core_source::create_makefile_with_core(hdrs, "trace_nums19")
-  STDERR.print("Makefile creation failed\n")
-  STDERR.print("*************************************************************\n\n")
-  STDERR.print("  NOTE: For Ruby 1.9 installation instructions, please see:\n\n")
-  STDERR.print("     http://wiki.github.com/mark-moseley/ruby-debug\n\n")
-  STDERR.print("*************************************************************\n\n")
-  exit(1)
-end  
+if !Debugger::RubyCoreSource.create_makefile_with_core(hdrs, "trace_nums")
+  abort("Makefile creation failed.")
+end