13 files changed, 783 insertions, 0 deletions
diff --git a/test/Builder/multi/different-actions.py b/test/Builder/multi/different-actions.py
new file mode 100644
index 0000000..ed1c676
--- /dev/null
+++ b/test/Builder/multi/different-actions.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that environments with actions that have different signatures
+generate an error.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    file = open(str(target[0]), 'wb')
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+
+B = Builder(action=Action(build, varlist=['XXX']), multi=1)
+env = Environment(BUILDERS = { 'B' : B }, XXX = 'foo')
+env2 = env.Clone(XXX = 'var')
+env.B(target = 'file6.out', source = 'file6a.in')
+env2.B(target = 'file6.out', source = 'file6b.in')
+""")
+
+test.write('file6a.in', 'file6a.in\n')
+test.write('file6b.in', 'file6b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: *** Two environments with different actions were specified for the same target: file6.out
+""") + TestSCons.file_expr
+
+test.pass_test()
+
+test.run(arguments='file6.out', status=2, stderr=expect)
+
+test.pass_test()
diff --git a/test/Builder/multi/different-environments.py b/test/Builder/multi/different-environments.py
new file mode 100644
index 0000000..9d1dcc8
--- /dev/null
+++ b/test/Builder/multi/different-environments.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a warning is generated if the calls have different overrides
+but the overrides don't appear to affect the build operation.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+_python_ = TestSCons._python_
+
+test.write('build.py', r"""#!/usr/bin/env python
+import sys
+def build(num, target, source):
+    file = open(str(target), 'wb')
+    file.write('%s\n'%num)
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+build(sys.argv[1],sys.argv[2],sys.argv[3:])
+""")
+
+test.write('SConstruct', """\
+B = Builder(action='%(_python_)s build.py $foo $TARGET $SOURCES', multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = 'file03.out', source = 'file03a.in', foo=1)
+env.B(target = 'file03.out', source = 'file03b.in', foo=2)
+""" % locals())
+
+test.write('file03a.in', 'file03a.in\n')
+test.write('file03b.in', 'file03b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: *** Two environments with different actions were specified for the same target: file03.out
+""") + TestSCons.file_expr
+
+test.run(arguments='file03.out', status=2, stderr=expect)
+
+test.pass_test()
diff --git a/test/Builder/multi/different-multi.py b/test/Builder/multi/different-multi.py
new file mode 100644
index 0000000..1f0ef2a
--- /dev/null
+++ b/test/Builder/multi/different-multi.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that trying to call a target with two different "multi" builders
+generates an error.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    file = open(str(target[0]), 'wb')
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+
+def build2(env, target, source):
+    build(env, target, source)
+
+# Put the names on the Builder objects and in the environment so
+# the error output should be consistent regardless of Python version
+# or how we mess with the Builder internals.
+B = Builder(action=build, multi=1, name='B')
+C = Builder(action=build2, multi=1, name='C')
+env = Environment(BUILDERS = { 'B' : B, 'C' : C })
+env.B(target = 'file8.out', source = 'file8.in')
+env.C(target = 'file8.out', source = 'file8.in')
+""")
+
+test.write('file8a.in', 'file8a.in\n')
+test.write('file8b.in', 'file8b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: *** Two different builders (B and C) were specified for the same target: file8.out
+""") + TestSCons.file_expr
+
+test.run(arguments='file8.out', status=2, stderr=expect)
+
+test.pass_test()
diff --git a/test/Builder/multi/different-order.py b/test/Builder/multi/different-order.py
new file mode 100644
index 0000000..f4a6443
--- /dev/null
+++ b/test/Builder/multi/different-order.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a "multi" builder can NOT be called multiple times with
+target lists that have different orders.  This is intentional; the
+order of the targets matter to the builder because the build command
+can contain things like ${TARGET[0]}.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    for t in target:
+        file = open(str(target[0]), 'wb')
+        for s in source:
+            file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = ['file10a.out', 'file10b.out'], source = 'file10.in')
+env.B(target = ['file10b.out', 'file10a.out'], source = 'file10.in')
+""")
+
+test.write('file10.in', 'file10.in\n')
+
+expect = TestSCons.re_escape("""
+scons: *** Two different target lists have a target in common: file10b.out  (from ['file10a.out', 'file10b.out'] and from ['file10b.out', 'file10a.out'])
+""") + TestSCons.file_expr
+
+test.run(arguments='file10.out', status=2, stderr=expect)
+
+test.pass_test()
diff --git a/test/Builder/multi/different-overrides.py b/test/Builder/multi/different-overrides.py
new file mode 100644
index 0000000..5420a49
--- /dev/null
+++ b/test/Builder/multi/different-overrides.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a warning is generated if the calls have different overrides
+but the overrides don't appear to affect the build operation.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    file = open(str(target[0]), 'wb')
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = 'file3.out', source = 'file3a.in', foo=1)
+env.B(target = 'file3.out', source = 'file3b.in', foo=2)
+""")
+
+test.write('file3a.in', 'file3a.in\n')
+test.write('file3b.in', 'file3b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: warning: Two different environments were specified for target file3.out,
+\tbut they appear to have the same action: build(target, source, env)
+""") + TestSCons.file_expr
+
+test.run(arguments='file3.out', stderr=expect)
+
+test.pass_test()
diff --git a/test/Builder/multi/different-target-lists.py b/test/Builder/multi/different-target-lists.py
new file mode 100644
index 0000000..5822199
--- /dev/null
+++ b/test/Builder/multi/different-target-lists.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a target file can't be in two different target lists.
+"""
+
+# XXX It would be nice if the following two tests could be made to work
+# by executing the action once for each unique set of targets. This
+# would make it simple to deal with PDB files on Windows like so:
+#
+#     env.Object(['foo.obj', 'vc60.pdb'], 'foo.c')
+#     env.Object(['bar.obj', 'vc60.pdb'], 'bar.c')
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    for t in target:
+        file = open(str(target[0]), 'wb')
+        for s in source:
+            file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = ['file11a.out', 'file11b.out'], source = 'file11a.in')
+env.B(target = ['file11b.out', 'file11c.out'], source = 'file11b.in')
+""")
+
+test.write('file11a.in', 'file11a.in\n')
+test.write('file11b.in', 'file11b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: *** Two different target lists have a target in common: file11b.out  (from ['file11a.out', 'file11b.out'] and from ['file11b.out', 'file11c.out'])
+""") + TestSCons.file_expr
+
+test.run(arguments='file11.out', status=2, stderr=expect)
+
+test.pass_test()
diff --git a/test/Builder/multi/error.py b/test/Builder/multi/error.py
new file mode 100644
index 0000000..4201cfc
--- /dev/null
+++ b/test/Builder/multi/error.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a builder with "multi" not set generates an error on the
+second call.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    file = open(str(target[0]), 'wb')
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=0)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = 'file2.out', source = 'file2a.in')
+env.B(target = 'file2.out', source = 'file2b.in')
+""")
+
+test.write('file2a.in', 'file2a.in\n')
+test.write('file2b.in', 'file2b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: *** Multiple ways to build the same target were specified for: file2.out  (from ['file2a.in'] and from ['file2b.in'])
+""") + TestSCons.file_expr
+
+test.run(arguments='file2.out', status=2, stderr=expect)
+
+test.pass_test()
diff --git a/test/Builder/multi/lone-target-list.py b/test/Builder/multi/lone-target-list.py
new file mode 100644
index 0000000..a305b54
--- /dev/null
+++ b/test/Builder/multi/lone-target-list.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a target file can't be a lone target and in a list.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    for t in target:
+        file = open(str(target[0]), 'wb')
+        for s in source:
+            file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = ['file12a.out', 'file12b.out'], source = 'file12a.in')
+env.B(target = 'file12a.out', source = 'file12b.in')
+""")
+
+test.write('file12a.in', 'file12a.in\n')
+test.write('file12b.in', 'file12b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: *** Two different target lists have a target in common: file12a.out  (from ['file12a.out', 'file12b.out'] and from ['file12a.out'])
+""") + TestSCons.file_expr
+
+test.run(arguments='file12.out', status=2, stderr=expect)
+
+
+
+test.pass_test()
diff --git a/test/Builder/multi/multi.py b/test/Builder/multi/multi.py
new file mode 100644
index 0000000..315599b
--- /dev/null
+++ b/test/Builder/multi/multi.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a builder with "multi" set can be called multiple times
+and the source files are added to the list.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    file = open(str(target[0]), 'wb')
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = 'file1.out', source = 'file1a.in')
+env.B(target = 'file1.out', source = 'file1b.in')
+""")
+
+test.write('file1a.in', 'file1a.in\n')
+test.write('file1b.in', 'file1b.in\n')
+
+test.run(arguments='file1.out')
+
+test.must_match('file1.out', "file1a.in\nfile1b.in\n")
+
+test.pass_test()
diff --git a/test/Builder/multi/same-actions.py b/test/Builder/multi/same-actions.py
new file mode 100644
index 0000000..afccb65
--- /dev/null
+++ b/test/Builder/multi/same-actions.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that two different environments can be used for the same target,
+so long as the actions have the same signature; a warning is generated.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    file = open(str(target[0]), 'wb')
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env2 = env.Clone(DIFFERENT_VARIABLE = 'true')
+env.B(target = 'file5.out', source = 'file5a.in')
+env2.B(target = 'file5.out', source = 'file5b.in')
+""")
+
+test.write('file5a.in', 'file5a.in\n')
+test.write('file5b.in', 'file5b.in\n')
+
+expect = TestSCons.re_escape("""
+scons: warning: Two different environments were specified for target file5.out,
+\tbut they appear to have the same action: build(target, source, env)
+""") + TestSCons.file_expr
+
+test.run(arguments='file5.out', stderr=expect)
+
+test.must_match('file5.out', "file5a.in\nfile5b.in\n")
+
+test.pass_test()
diff --git a/test/Builder/multi/same-overrides.py b/test/Builder/multi/same-overrides.py
new file mode 100644
index 0000000..d12af21
--- /dev/null
+++ b/test/Builder/multi/same-overrides.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that everything works if two multi calls have the same overrides.
+"""
+
+import string
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+_python_ = TestSCons._python_
+
+test.write('build.py', r"""#!/usr/bin/env python
+import sys
+def build(num, target, source):
+    file = open(str(target), 'wb')
+    file.write('%s\n'%num)
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+build(sys.argv[1],sys.argv[2],sys.argv[3:])
+""")
+
+test.write('SConstruct', """\
+B = Builder(action='%(_python_)s build.py $foo $TARGET $SOURCES', multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = 'file4.out', source = 'file4a.in', foo=3)
+env.B(target = 'file4.out', source = 'file4b.in', foo=3)
+""" % locals())
+
+test.write('file4a.in', 'file4a.in\n')
+test.write('file4b.in', 'file4b.in\n')
+
+python_expr = string.replace(TestSCons.python, '\\', '\\\\')
+act = TestSCons.re_escape('"%s" build.py \$foo \$TARGET \$SOURCES' % python_expr)
+
+expect = ("""
+scons: warning: Two different environments were specified for target file4.out,
+\tbut they appear to have the same action: %s
+""" % act) + TestSCons.file_expr
+
+test.run(arguments='file4.out', stderr=expect)
+
+test.must_match('file4.out', "3\nfile4a.in\nfile4b.in\n")
+
+test.pass_test()
diff --git a/test/Builder/multi/same-targets.py b/test/Builder/multi/same-targets.py
new file mode 100644
index 0000000..19efff7
--- /dev/null
+++ b/test/Builder/multi/same-targets.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a "multi" builder can be called multiple times with the same
+target list if everything is identical.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """\
+def build(env, target, source):
+    for t in target:
+        file = open(str(t), 'wb')
+        for s in source:
+            file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=1)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = ['file9a.out', 'file9b.out'], source = 'file9a.in')
+env.B(target = ['file9a.out', 'file9b.out'], source = 'file9b.in')
+""")
+
+test.write('file9a.in', 'file9a.in\n')
+test.write('file9b.in', 'file9b.in\n')
+
+test.run(arguments='file9b.out')
+
+test.must_match('file9a.out', "file9a.in\nfile9b.in\n")
+test.must_match('file9b.out', "file9a.in\nfile9b.in\n")
+
+test.pass_test()
diff --git a/test/Builder/non-multi.py b/test/Builder/non-multi.py
new file mode 100644
index 0000000..1d5822e
--- /dev/null
+++ b/test/Builder/non-multi.py
@@ -0,0 +1,54 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that a builder without "multi" set can still be called multiple
+times if the calls are the same.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons(match=TestSCons.match_re)
+
+test.write('SConstruct', """
+def build(env, target, source):
+    file = open(str(target[0]), 'wb')
+    for s in source:
+        file.write(open(str(s), 'rb').read())
+
+B = Builder(action=build, multi=0)
+env = Environment(BUILDERS = { 'B' : B })
+env.B(target = 'file7.out', source = 'file7.in')
+env.B(target = 'file7.out', source = 'file7.in')
+""")
+
+test.write('file7.in', 'file7.in\n')
+
+test.run(arguments='file7.out')
+
+test.must_match('file7.out', "file7.in\n")
+
+test.pass_test()