(bash)[dfl@cosminyah ruby19]$ ruby extconf.rb
Compiling with Ruby 1.9
checking for ruby.h... yes
creating Makefile
(bash)[dfl@cosminyah ruby19]$ make
linking shared-object performant.bundle
(bash)[dfl@cosminyah ruby19]$ make clean
(bash)[dfl@cosminyah ruby19]$ make
compiling performant.c
performant.c:58:22: warning: incompatible integer to pointer conversion assigning to 'struct RArray *' from 'VALUE' (aka 'unsigned long')
rb_array_of_arrays = rb_block_call(unsorted_array_of_arrays, rb_intern("sort_by!"), 0, 0, rb_ary_length, 0);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
linking shared-object performant.bundle