diff --git a/SConstruct b/SConstruct
index cb7dbcbb2..e2fd71612 100644
--- a/SConstruct
+++ b/SConstruct
@@ -20,30 +20,39 @@
 # $Id$
 
 
-import os, sys
+import os, sys, platform
 
+
+
+if platform.uname()[4] == 'x86_64':
+    LIB_PLATFORM = 'lib64'
+else :
+    LIB_PLATFORM = 'lib'
+
+    
 opts = Options()
 
 opts.Add('PREFIX', 'The install path "prefix"', '/usr/local')
 opts.Add(PathOption('BOOST_INCLUDES', 'Search path for boost include files', '/usr/include'))
-opts.Add(PathOption('BOOST_LIBS', 'Search path for boost library files', '/usr/lib'))
+opts.Add(PathOption('BOOST_LIBS', 'Search path for boost library files', '/usr/' + LIB_PLATFORM))
 opts.Add(PathOption('FREETYPE_CONFIG', 'The path to the freetype-config executable.', '/usr/bin/freetype-config'))
 opts.Add(PathOption('PNG_INCLUDES', 'Search path for libpng include files', '/usr/include'))
-opts.Add(PathOption('PNG_LIBS', 'Search path for libpng include files', '/usr/lib'))
+opts.Add(PathOption('PNG_LIBS', 'Search path for libpng include files', '/usr/' + LIB_PLATFORM))
 opts.Add(PathOption('JPEG_INCLUDES', 'Search path for libjpeg include files', '/usr/include'))
-opts.Add(PathOption('JPEG_LIBS', 'Search path for libjpeg library files', '/usr/lib'))
+opts.Add(PathOption('JPEG_LIBS', 'Search path for libjpeg library files', '/usr/' + LIB_PLATFORM))
 opts.Add(PathOption('TIFF_INCLUDES', 'Search path for libtiff include files', '/usr/include'))
-opts.Add(PathOption('TIFF_LIBS', 'Search path for libtiff library files', '/usr/lib'))
+opts.Add(PathOption('TIFF_LIBS', 'Search path for libtiff library files', '/usr/' + LIB_PLATFORM))
 opts.Add(PathOption('PGSQL_INCLUDES', 'Search path for PostgreSQL include files', '/usr/include'))
-opts.Add(PathOption('PGSQL_LIBS', 'Search path for PostgreSQL library files', '/usr/lib'))
+opts.Add(PathOption('PGSQL_LIBS', 'Search path for PostgreSQL library files', '/usr/' + LIB_PLATFORM))
 opts.Add(PathOption('PROJ_INCLUDES', 'Search path for PROJ.4 include files', '/usr/local/include'))
-opts.Add(PathOption('PROJ_LIBS', 'Search path for PROJ.4 include files', '/usr/local/lib'))
+opts.Add(PathOption('PROJ_LIBS', 'Search path for PROJ.4 include files', '/usr/local/' + LIB_PLATFORM))
 opts.Add(PathOption('PYTHON','Python executable', sys.executable))
 opts.Add(ListOption('INPUT_PLUGINS','Input drivers to include','all',['postgis','shape','raster']))
 opts.Add(ListOption('BINDINGS','Language bindings to build','all',['python']))
 opts.Add('DEBUG', 'Compile a debug version of mapnik', '')
 
 env = Environment(ENV=os.environ, options=opts)
+env['LIB_PLATFORM'] = LIB_PLATFORM
 
 Help(opts.GenerateHelpText(env))
 
diff --git a/bindings/python/SConscript b/bindings/python/SConscript
index dc4c6b67f..8a19673ae 100644
--- a/bindings/python/SConscript
+++ b/bindings/python/SConscript
@@ -23,7 +23,7 @@ import glob
 
 Import('env')
 
-prefix = env['PYTHON_PREFIX'] + '/lib/python' + env['PYTHON_VERSION'] + '/site-packages/'
+prefix = env['PYTHON_PREFIX'] + '/'+env['LIB_PLATFORM']+ '/python' + env['PYTHON_VERSION'] + '/site-packages/'
 
 libraries = ['mapnik', 'boost_python%s' % env['BOOST_APPEND']]
 headers = [env['PYTHON_PREFIX'] + '/include/python' + env['PYTHON_VERSION']] + env['CPPPATH']
@@ -36,7 +36,7 @@ inputpluginspath = mapniklibpath + '/input'
 fontscollectionpath = mapniklibpath + '/fonts'
 """
 
-file('mapnik/paths.py','w').write(paths % (env['PREFIX'] + '/lib/mapnik',))
+file('mapnik/paths.py','w').write(paths % (env['PREFIX'] + '/'+env['LIB_PLATFORM']+'/mapnik',))
 
 pymapnik = glob.glob('mapnik/*.py')
 env.Alias(target='install', source=env.Install(prefix+'/mapnik', pymapnik))
diff --git a/fonts/SConscript b/fonts/SConscript
index 63810a92b..d4e63f396 100644
--- a/fonts/SConscript
+++ b/fonts/SConscript
@@ -24,4 +24,4 @@ Import('env')
 prefix = env['PREFIX']
 
 includes = glob.glob('*/*.ttf')
-env.Alias(target='install', source=env.Install(prefix+'/lib/mapnik/fonts', includes))
+env.Alias(target='install', source=env.Install(prefix+'/' + env['LIB_PLATFORM'] + '/mapnik/fonts', includes))
diff --git a/plugins/input/postgis/SConscript b/plugins/input/postgis/SConscript
index 18ef6e973..fdb926853 100644
--- a/plugins/input/postgis/SConscript
+++ b/plugins/input/postgis/SConscript
@@ -32,5 +32,5 @@ postgis_src = Split(
 
 postgis_inputdriver = env.SharedLibrary('postgis', source=postgis_src, SHLIBPREFIX='', LIBS='pq')
 
-env.Install(prefix + '/lib/mapnik/input', postgis_inputdriver)
-env.Alias("install", prefix + '/lib/mapnik/input')
+env.Install(prefix + '/' + env['LIB_PLATFORM'] + '/mapnik/input', postgis_inputdriver)
+env.Alias('install', prefix + '/' + env['LIB_PLATFORM'] + '/mapnik/input')
diff --git a/plugins/input/raster/SConscript b/plugins/input/raster/SConscript
index 5922f5875..b855764e8 100644
--- a/plugins/input/raster/SConscript
+++ b/plugins/input/raster/SConscript
@@ -33,5 +33,5 @@ raster_src = Split(
 
 raster_inputdriver = env.SharedLibrary('raster', source=raster_src, SHLIBPREFIX='', LIBS=[])
 
-env.Install(prefix + '/lib/mapnik/input', raster_inputdriver)
-env.Alias('install', prefix + '/lib/mapnik/input')
+env.Install(prefix + '/' + env['LIB_PLATFORM'] + '/mapnik/input', raster_inputdriver)
+env.Alias('install', prefix + '/' + env['LIB_PLATFORM'] + '/mapnik/input')
diff --git a/plugins/input/shape/SConscript b/plugins/input/shape/SConscript
index ee5b49bbe..85999be02 100644
--- a/plugins/input/shape/SConscript
+++ b/plugins/input/shape/SConscript
@@ -38,5 +38,5 @@ shape_src = Split(
 
 shape_inputdriver = env.SharedLibrary('shape', source=shape_src, SHLIBPREFIX='', LIBS=[])
 
-env.Install(prefix+'/lib/mapnik/input', shape_inputdriver)
-env.Alias('install', prefix + '/lib/mapnik/input')
+env.Install(prefix + '/' + env['LIB_PLATFORM'] + '/mapnik/input', shape_inputdriver)
+env.Alias('install', prefix + '/' + env['LIB_PLATFORM'] + '/mapnik/input')
diff --git a/src/SConscript b/src/SConscript
index 5d9476c8b..ac7ab1abd 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -57,6 +57,6 @@ source = Split(
 
 mapnik = env.SharedLibrary('mapnik', source, LIBS=libraries, LINKFLAGS=linkflags)
 
-env.Alias(target='install', source=env.Install(prefix+'/lib', mapnik))
+env.Alias(target='install', source=env.Install(prefix + '/' + env['LIB_PLATFORM'], mapnik))
 includes = glob.glob('../include' + '/*.hpp')
 env.Alias(target='install', source=env.Install(prefix+'/include/mapnik', includes))