From 0d6cd93f95821ac1df418439dd0b9156b0489a37 Mon Sep 17 00:00:00 2001
From: Thomas Nagy <tnagy2pow10@gmail.com>
Date: Sat, 29 Sep 2012 17:32:46 +0200
Subject: [PATCH] empty --prefix

---
 waflib/Configure.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/waflib/Configure.py b/waflib/Configure.py
index 052706e4..ef0fdc2a 100644
--- a/waflib/Configure.py
+++ b/waflib/Configure.py
@@ -254,7 +254,10 @@ class ConfigurationContext(Context.Context):
 		:param env: a ConfigSet, usually ``conf.env``
 		"""
 		if not env.PREFIX:
-			env.PREFIX = os.path.abspath(os.path.expanduser(Options.options.prefix))
+			if Options.options.prefix or Utils.is_win32:
+				env.PREFIX = os.path.abspath(os.path.expanduser(Options.options.prefix))
+			else:
+				env.PREFIX = ''
 		if not env.BINDIR:
 			env.BINDIR = Utils.subst_vars('${PREFIX}/bin', env)
 		if not env.LIBDIR: