Do not add the --user switch for Python < 2.6.

2 files changed, 16 insertions, 5 deletions

diff --git a/SConstruct b/SConstruct
index 1b0b269..3a3d308 100644
--- a/SConstruct
+++ b/SConstruct
@@ -1,7 +1,13 @@
 # -*- coding: utf-8 -*-
 
 def build_lib():
-    AddOption('--user', action='store_true')
+    try:
+        from site import USER_SITE
+    except ImportError:
+        # Installing in the user site directory requires Python ≥ 2.6.
+        pass
+    else:
+        AddOption('--user', action='store_true')
     SConscript('src/SConscript', variant_dir='build', duplicate=0)
 
 def build_doc():
diff --git a/src/SConscript b/src/SConscript
index af0e4cb..3099b3d 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
 
 import os
+import site
 from distutils.sysconfig import get_python_inc, get_python_lib
-from site import USER_SITE
 import SCons.Util
 
 env = Environment()
@@ -33,14 +33,19 @@ env.Alias('lib', libpyexiv2)
 
 # Install the shared library and the Python modules, invoked with
 # 'scons install'.
-if GetOption('user'):
+try:
+    user_site = GetOption('user')
+except AttributeError:
+    user_site = False
+
+if user_site:
     # Install in the current user site directory.
     # See http://www.python.org/dev/peps/pep-0370/ for reference.
-    install_dir = USER_SITE
+    install_dir = site.USER_SITE
 else:
     python_lib_path = get_python_lib(plat_specific=True)
     # If DESTDIR is specified on the command line when invoking
-    # scons, it will be prepended to each installed target file. See
+    # scons, its value will be prepended to each installed target file. See
     # http://www.gnu.org/prep/standards/html_node/DESTDIR.html for reference.
     dest_dir = ARGUMENTS.get('DESTDIR')
     if dest_dir is None or not os.path.isabs(dest_dir):