Squashed 'waflib/' changes from 915dcb1..e7a29b6

e7a29b6 Upgrade to waf 2.0.15
8280f9d Add command for running executables from the build directory
8073c1a Make make_simple_dox() safe in case of exception
70d03b8 Avoid use of global counter hacks for configuration display
b7d689a Rewrite test framework
94deadf Automatically add options and move add_flags() to options context
f4259ee Reduce system include path noise
927b608 Automatically display configuration header
c44b8f3 Set line justification from a constant in the wscript
a48e26f Automatically detect if wscript has a test hook
ef66724 Save runtime variables in the environment
63bcbcd Clean up TestContext
b1d9505 Add ExecutionContext for setting runtime environment
387c1df Add show_diff() and test_file_equals() utilities
29d4d29 Fix in-tree library paths
9fde01f Add custom configuration context
6d3612f Add lib_path_name constant

git-subtree-dir: waflib
git-subtree-split: e7a29b6b9b2f842314244c23c14d8f8f560904e1

1 files changed, 5 insertions, 2 deletions

diff --git a/extras/buildcopy.py b/extras/buildcopy.py
index a6d9ac8..eaff7e6 100644
--- a/extras/buildcopy.py
+++ b/extras/buildcopy.py
@@ -22,7 +22,7 @@ Examples::
 
 """
 import os, shutil
-from waflib import Errors, Task, TaskGen, Utils, Node
+from waflib import Errors, Task, TaskGen, Utils, Node, Logs
 
 @TaskGen.before_method('process_source')
 @TaskGen.feature('buildcopy')
@@ -58,10 +58,13 @@ def make_buildcopy(self):
 		raise Errors.WafError('buildcopy: File not found in src: %s'%os.path.join(*lst))
 
 	nodes = [ to_src_nodes(n) for n in getattr(self, 'buildcopy_source', getattr(self, 'source', [])) ]
+	if not nodes:
+		Logs.warn('buildcopy: No source files provided to buildcopy in %s (set `buildcopy_source` or `source`)',
+			self)
+		return
 	node_pairs = [(n, n.get_bld()) for n in nodes]
 	self.create_task('buildcopy', [n[0] for n in node_pairs], [n[1] for n in node_pairs], node_pairs=node_pairs)
 
-
 class buildcopy(Task.Task):
 	"""
 	Copy for each pair `n` in `node_pairs`: n[0] -> n[1].