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Path: /opt/chef.upgrade/embedded/lib/ruby/gems/2.3.0/gems/ruby-prof-0.16.2/ext/ruby_prof/

Viewing File: extconf.rb

require "mkmf"

if RUBY_ENGINE != "ruby"
  STDERR.puts("\n\n***** This gem is MRI-specific. It does not support #{RUBY_ENGINE}. *****\n\n")
  exit(1)
end

if RUBY_VERSION < "1.9.3"
  STDERR.puts("\n\n***** Ruby version #{RUBY_VERSION} is no longer supported. Please upgrade to 1.9.3 or higher. *****\n\n")
  exit(1)
end

# standard ruby methods
have_func("rb_gc_stat")
have_func("rb_gc_count")

# Alexander Dymo GC patch
have_func("rb_os_allocated_objects")
have_func("rb_gc_allocated_size")

# Stefan Kaes GC patches
have_func("rb_gc_collections")
have_func("rb_gc_time")
# for ruby 2.1
have_func("rb_gc_total_time")
have_func("rb_gc_total_mallocs")
have_func("rb_gc_total_malloced_bytes")

# Lloyd Hilaiel's heap info patch
have_func("rb_heap_total_mem")
have_func("rb_gc_heap_info")

def add_define(name, value = nil)
  if value
    $defs.push("-D#{name}=#{value}")
  else
    $defs.push("-D#{name}")
  end
end

def windows?
  RbConfig::CONFIG['host_os'] =~ /mswin|mingw/
end

if !windows? && RUBY_PLATFORM !~ /(darwin|openbsd)/
  $LDFLAGS += " -lrt" # for clock_gettime
end
add_define("RUBY_PROF_RUBY_VERSION", RUBY_VERSION.split('.')[0..2].inject(0){|v,d| v*100+d.to_i})

# for ruby 1.9, determine whether threads inherit trace flags (latest 1.9.2 and later should work correctly)
if RUBY_VERSION > "1.9"
  require 'set'
  threads = Set.new
  set_trace_func lambda { |*args| threads << Thread.current.object_id }
  Thread.new{1}.join
  set_trace_func nil
  if threads.size < 2
    # if we end up here, ruby does not automatically activate tracing in spawned threads
    STDERR.puts("Ruby #{RUBY_VERSION} does not activate tracing in spawned threads. Consider upgrading.")
    exit(1)
  end
end

create_makefile("ruby_prof")