--- alexandria-0.6.5+0.6.6alpha/Rakefile.prefix	2009-12-17 02:21:21.000000000 +0900
+++ alexandria-0.6.5+0.6.6alpha/Rakefile	2009-12-17 02:30:48.000000000 +0900
@@ -19,8 +19,9 @@
 
 stage_dir = ENV['DESTDIR'] || 'tmp'
 
+INSTALL_PREFIX = ENV['install_prefix']
 PROJECT='alexandria'
-PREFIX='/usr'
+PREFIX="#{INSTALL_PREFIX}/usr"
 SHARE = "#{PREFIX}/share"
 
 DATA_VERSION = '0.6.3'
@@ -41,7 +42,7 @@
 debinstall = FileInstallTask.new(:debian_install, stage_dir, true) do |i|
 
   i.install_exe('bin', 'bin/*', "#{PREFIX}/bin")
-  i.install('lib', 'lib/**/*.rb', i.rubylib)
+  i.install('lib', 'lib/**/*.rb', "#{INSTALL_PREFIX}" + i.rubylib)
 
   share_files = ['data/alexandria/**/*', 'data/gnome/**/*.*',
                  'data/locale/**/*.mo', 'data/omf/**/*.omf',