From 08a0362ddb10d8d15ae2ebf48a7e913e8a36158c Mon Sep 17 00:00:00 2001
From: benmwebb <benmwebb@fdb21ef1-2011-0410-befe-b5e4ea1792b1>
Date: Thu, 2 Apr 2009 20:05:58 +0000
Subject: [PATCH] Set a SWIGVERSION construction variable, to contain the
 version number of the SWIG program.

git-svn-id: http://scons.tigris.org/svn/scons/trunk@4083 fdb21ef1-2011-0410-befe-b5e4ea1792b1
---
 src/engine/SCons/Tool/swig.py  | 8 ++++++++
 src/engine/SCons/Tool/swig.xml | 7 +++++++
 2 files changed, 15 insertions(+)

diff --git a/src/engine/SCons/Tool/swig.py b/src/engine/SCons/Tool/swig.py
index dda5be56..c7af7017 100644
--- a/src/engine/SCons/Tool/swig.py
+++ b/src/engine/SCons/Tool/swig.py
@@ -119,6 +119,13 @@ def _swigEmitter(target, source, env):
             target.extend(java_files)
     return (target, source)
 
+def _get_swig_version(env):
+    """Run the SWIG command line tool to get and return the version number"""
+    out = os.popen(env['SWIG'] + ' -version').read()
+    match = re.search(r'SWIG Version\s+(\S+)$', out, re.MULTILINE)
+    if match:
+        return match.group(1)
+
 def generate(env):
     """Add Builders and construction variables for swig to an Environment."""
     c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
@@ -139,6 +146,7 @@ def generate(env):
     java_file.add_emitter('.i', _swigEmitter)
 
     env['SWIG']              = 'swig'
+    env['SWIGVERSION']       = _get_swig_version(env)
     env['SWIGFLAGS']         = SCons.Util.CLVar('')
     env['SWIGDIRECTORSUFFIX'] = '_wrap.h'
     env['SWIGCFILESUFFIX']   = '_wrap$CFILESUFFIX'
diff --git a/src/engine/SCons/Tool/swig.xml b/src/engine/SCons/Tool/swig.xml
index e17c4c68..33d3721c 100644
--- a/src/engine/SCons/Tool/swig.xml
+++ b/src/engine/SCons/Tool/swig.xml
@@ -19,6 +19,7 @@ SWIGINCPREFIX
 SWIGINCSUFFIX
 SWIGCOM
 SWIGPATH
+SWIGVERSION
 </sets>
 <uses>
 SWIGCOMSTR
@@ -203,3 +204,9 @@ env = Environment(SWIGCOM="my_swig -o $TARGET $_SWIGINCFLAGS $SORUCES")
 </example>
 </summary>
 </cvar>
+
+<cvar name="SWIGVERSION">
+<summary>
+The version number of the SWIG tool.
+</summary>
+</cvar>
-- 
2.26.2