E:/programowanie/RailsInstaller/Ruby1.9.3/bin/ruby.exe extconf.rb
checking for rb_method_entry_t.body in method.h... no
checking for vm_core.h... no
E:/programowanie/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/ruby_core_source-0.1.5/lib/ruby_core_source.rb:39: Use RbConfig instead of obsolete and deprecated Config.
checking for rb_method_entry_t.body in method.h... no
checking for vm_core.h... yes
checking for iseq.h... yes
checking for insns.inc... yes
checking for insns_info.inc... yes
checking for eval_intern.h... yes
creating Makefile

make
generating ruby_debug-i386-mingw32.def
compiling breakpoint.c
compiling ruby_debug.c
ruby_debug.c:24:19: error: conflicting types for 'rb_iseq_compile_with_option'
E:/programowanie/RailsInstaller/Ruby1.9.3/include/ruby-1.9.1/ruby-1.9.3-p125/vm_core.h:505:7: note: previous declaration of 'rb_iseq_compile_with_option' was here
ruby_debug.c: In function 'context_jump':
ruby_debug.c:2378:53: warning: comparison between signed and unsigned integer expressions
ruby_debug.c:2392:27: warning: comparison between signed and unsigned integer expressions
make: *** [ruby_debug.o] Error 1