extconf.rb in ruby-mpc-0.0.7

- old
+ new

@@ -1,6 +1,7 @@
 require 'mkmf'
+require "extconf_task/mkmf_utils"
 
 i = 0
 while i < ARGV.size
   case ARGV[i]
   when '--ldflags'
@@ -18,17 +19,8 @@
 
 dir_config("mpfr")
 dir_config("mpc")
 dir_config("gmp")
 if have_header('mpfr.h') && have_library('mpfr') && have_header('mpc.h') && have_library('mpc') && have_header('gmp.h') && have_library('gmp')
-  ruby_mpfr_header_dir = nil
-  begin
-    require "rubygems"
-    spec = Gem::Specification.find_by_name("ruby-mpfr")
-    ruby_mpfr_header_dir = File.join(spec.full_gem_path, 'ext/mpfr')
-  rescue LoadError
-  end
-  unless find_header("ruby_mpfr.h", ruby_mpfr_header_dir)
-    header_not_found("ruby_mpfr.h")
-  end
+  find_header_in_gem("ruby_mpfr.h", "ruby-mpfr")
   create_makefile("mpc")
 end