added resizer

lib/danbooru_image_resizer/extconf.rb

@@ -0,0 +1,26 @@
+#!/bin/env ruby
+
+require 'mkmf'
+
+CONFIG['CC'] = "g++"
+CONFIG['LDSHARED'] = CONFIG['LDSHARED'].sub(/^cc /,'g++ ')	# otherwise we would not link with the C++ runtime
+
+dir_config("gd")
+dir_config("jpeg")
+dir_config("png")
+
+have_header("gd.h")
+
+have_library("gd")
+have_library("jpeg")
+have_library("png")
+
+have_func("gdImageCreateFromGif", "gd.h")
+have_func("gdImageJpeg", "gd.h")
+have_func("jpeg_set_quality", ["stdlib.h", "stdio.h", "jpeglib-extern.h"])
+have_func("png_set_expand_gray_1_2_4_to_8", "png.h")
+
+with_cflags("-O2 -fno-exceptions -Wall") {true}
+#with_cflags("-O0 -g -fno-exceptions -Wall") {true}
+
+create_makefile("danbooru_image_resizer")