require'mkmf'# FIXME: test for GCC __sync_XXX builtins here, somehow...have_func('mmap','sys/mman.h')or abort 'mmap() not found'have_func('munmap','sys/mman.h')or abort 'munmap() not found'have_func("rb_struct_alloc_noinit")have_func('rb_thread_blocking_region')dir_config('raindrops')create_makefile('raindrops_ext')