[gobject-introspection] update-glib-annotations: Set required environment variables

[Colin Walters <walters src gnome org>]

commit 29ed1d64ee4e2e4a18f34734b0ceda3e629cf465
Author: Colin Walters <walters verbum org>
Date:   Tue Apr 17 16:22:17 2012 -0400

    update-glib-annotations: Set required environment variables
    
    Assume srcdir=builddir, so users don't have to set this.

 misc/update-glib-annotations.py |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/misc/update-glib-annotations.py b/misc/update-glib-annotations.py
index a65ec30..813019d 100755
--- a/misc/update-glib-annotations.py
+++ b/misc/update-glib-annotations.py
@@ -9,6 +9,11 @@ import sys
 
 import subprocess
 
+path=os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+for k in ['UNINSTALLED_INTROSPECTION_SRCDIR',
+          'UNINSTALLED_INTROSPECTION_BUILDDIR']:
+    if k not in os.environ:
+        os.environ[k] = path
 
 possible_builddirs = ['../_build/', '..', '../../build/']
 builddir = None