Added command-line option parser and an unsigned build option to build_all.py

Modified win/build_all.py so that it parses command-line options using getopt.
Added option "-u / --unsigned" which allows forcing unsigned builds and a "-h /
--help" option. By default a signed build is generated, provided that the Python
SignTool module is installed. If not, the build is interrupted.

Signed-off-by: Samuli Seppänen <samuli@openvpn.net>
Acked-by: Peter Stuge <peter@stuge.se>
Signed-off-by: David Sommerseth <dazo@users.sourceforge.net>

win/build_all.py

@@ -1,18 +1,59 @@
-from config_all import main as config_all
-from build import main as build_openvpn
-from build_ddk import main as build_ddk
-from sign import main as sign
-from make_dist import main as make_dist
-
-def main(config):
-    config_all(config)
-    build_openvpn()
-    build_ddk(config, 'tap', 'all')
-    build_ddk(config, 'tapinstall', 'all')
-    sign(config, 'all')
-    make_dist(config)
-
-# if we are run directly, and not loaded as a module
+import getopt, sys
+from config_all import main as config_all
+from build import main as build_openvpn
+from build_ddk import main as build_ddk
+from make_dist import main as make_dist
+
+def Usage():
+    '''Show usage information'''
+    print "Usage: build_all.py [OPTIONS]..."
+    print "Build OpenVPN using Visual Studio tools"
+    print
+    print " -h, --help		Show this help"
+    print " -u, --unsigned	Do not sign the TAP drivers"
+    sys.exit(1)
+
+def main(config):
+
+    # Do a signed build by default
+    signedBuild=True
+
+    # Parse the command line argument(s)
+    try:
+       opts, args = getopt.getopt(sys.argv[1:], "hu", ["help", "unsigned"])
+    except getopt.GetoptError:
+       Usage()
+
+    for o, a in opts:
+       if o in ("-h","--help"):
+          Usage()
+       if o in ("-u", "--unsigned"):
+          signedBuild=False
+
+
+    # Check if the SignTool module is present. This avoids ImportErrors popping
+    # up annoyingly _after_ the build.
+    if signedBuild:
+       try:
+          from signtool import SignTool
+       except (ImportError):
+          print "ERROR: SignTool python module not found! Can't do a signed build."
+          sys.exit(1)
+    else:
+       print "Doing an unsigned build as requested"
+
+    # Start the build
+    config_all(config)
+    build_openvpn()
+    build_ddk(config, 'tap', 'all')
+    build_ddk(config, 'tapinstall', 'all')
+
+    if signedBuild:
+       sign(config, 'all')
+
+    make_dist(config)
+
+# if we are run directly, and not loaded as a module
 if __name__ == "__main__":
     from wb import config
     main(config)