[examples-v2 commit] waf: Add null check for rtems_tools

[Gedare Bloom]

Module:    examples-v2
Branch:    master
Commit:    72a42499525fb3e501559a360b052684e446dfe4
Changeset: http://git.rtems.org/examples-v2/commit/?id=72a42499525fb3e501559a360b052684e446dfe4

Author:    Chirayu Desai <cdesai at cyanogenmod.org>
Date:      Wed Dec  4 15:25:12 2013 +0530

waf: Add null check for rtems_tools

If 'waf configure' is called without --rtems-tools, it'll be set to
None, leading to a TypeError.

Traceback (most recent call last):
  File "/home/cdesai/bin/.waf-1.7.13-8c328f55ac27cdb03b8c949f189bbac3/waflib/Scripting.py", line 97, in waf_entry_point
    run_commands()
  File "/home/cdesai/bin/.waf-1.7.13-8c328f55ac27cdb03b8c949f189bbac3/waflib/Scripting.py", line 153, in run_commands
    ctx=run_command(cmd_name)
  File "/home/cdesai/bin/.waf-1.7.13-8c328f55ac27cdb03b8c949f189bbac3/waflib/Scripting.py", line 146, in run_command
    ctx.execute()
  File "/home/cdesai/bin/.waf-1.7.13-8c328f55ac27cdb03b8c949f189bbac3/waflib/Configure.py", line 128, in execute
    super(ConfigurationContext,self).execute()
  File "/home/cdesai/bin/.waf-1.7.13-8c328f55ac27cdb03b8c949f189bbac3/waflib/Context.py", line 87, in execute
    self.recurse([os.path.dirname(g_module.root_path)])
  File "/home/cdesai/bin/.waf-1.7.13-8c328f55ac27cdb03b8c949f189bbac3/waflib/Context.py", line 128, in recurse
    user_function(self)
  File "/home/cdesai/rtems/examples-v2/wscript", line 29, in configure
    rtems.configure(conf)
  File "/home/cdesai/rtems/examples-v2/rtems_waf/rtems.py", line 158, in configure
    tools = _find_tools(conf, arch, [rtems_path] + rtems_tools, tools)
TypeError: can only concatenate list (not "NoneType") to list

---

 rtems_waf/rtems.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/rtems_waf/rtems.py b/rtems_waf/rtems.py
index 8b312dc..59047f3 100644
--- a/rtems_waf/rtems.py
+++ b/rtems_waf/rtems.py
@@ -134,6 +134,9 @@ def configure(conf):
                                                               conf.options.rtems_archs,
                                                               conf.options.rtems_bsps)
 
+    if rtems_tools is None:
+        conf.fatal('RTEMS tools not found.')
+
     _log_header(conf)
 
     conf.msg('Architectures', ', '.join(archs), 'YELLOW')