scons: fix check environment

if os.environ is a special class the scons.Environment Clone() doesn't
work properly.

show builddir in prepare.sh so we can actually see it works.

1 files changed, 1 insertions, 1 deletions

diff --git a/SConstruct b/SConstruct
index 42165724..d63a00db 100644
--- a/SConstruct
+++ b/SConstruct
@@ -273,7 +273,7 @@ vars.AddVariables(
 )
 
 env = Environment(
-	ENV = os.environ,
+	ENV = dict(os.environ),  # make sure we have a dict here so .Clone() works properly
 	variables = vars,
 	CPPPATH = Split('#sconsbuild/build')
 )