Merge in mainline.

14 files changed, 762 insertions, 1 deletions

diff --git a/src/CHANGES.txt b/src/CHANGES.txt
index b0a4517..5be0399 100644
--- a/src/CHANGES.txt
+++ b/src/CHANGES.txt
@@ -87,6 +87,7 @@ may cause rebuilds.  In no case should rebuilds not happen.
     - Remove establishing the SharedLibrary builder in the dmd, ldc, and gdc
       tools, must now include the ar tool to get this builder as is required for
       other compiler tools.
+    - Add clang and clang++ tools based on Paweł Tomulik's work.
 
 RELEASE 2.5.1 - Mon, 03 Nov 2016 13:37:42 -0400
 
diff --git a/src/engine/SCons/Tool/__init__.py b/src/engine/SCons/Tool/__init__.py
index 80a16f5..1ab43e7 100644
--- a/src/engine/SCons/Tool/__init__.py
+++ b/src/engine/SCons/Tool/__init__.py
@@ -101,7 +101,10 @@ for suffix in LaTeXSuffixes:
 # Tool aliases are needed for those tools whos module names also
 # occur in the python standard library. This causes module shadowing and
 # can break using python library functions under python3
-TOOL_ALIASES = {'gettext':'gettext_tool'}
+TOOL_ALIASES = {
+    'gettext':'gettext_tool',
+    'clang++': 'clangxx',
+}
 
 class Tool(object):
     def __init__(self, name, toolpath=[], **kw):
diff --git a/src/engine/SCons/Tool/clang.py b/src/engine/SCons/Tool/clang.py
new file mode 100644
index 0000000..177e6b2
--- /dev/null
+++ b/src/engine/SCons/Tool/clang.py
@@ -0,0 +1,83 @@
+# -*- coding: utf-8; -*-
+
+"""SCons.Tool.clang
+
+Tool-specific initialization for clang.
+
+There normally shouldn't be any need to import this module directly.
+It will usually be imported through the generic SCons.Tool.Tool()
+selection method.
+
+"""
+
+#
+# __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__"
+
+# Based on SCons/Tool/gcc.py by Paweł Tomulik 2014 as a separate tool.
+# Brought into the SCons mainline by Russel Winder 2017.
+
+import os
+import re
+import subprocess
+import sys
+
+import SCons.Util
+import SCons.Tool.cc
+
+compilers = ['clang']
+
+def generate(env):
+    """Add Builders and construction variables for clang to an Environment."""
+    SCons.Tool.cc.generate(env)
+
+    env['CC'] = env.Detect(compilers) or 'clang'
+    if env['PLATFORM'] in ['cygwin', 'win32']:
+        env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS')
+    else:
+        env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS -fPIC')
+    # determine compiler version
+    if env['CC']:
+        #pipe = SCons.Action._subproc(env, [env['CC'], '-dumpversion'],
+        pipe = SCons.Action._subproc(env, [env['CC'], '--version'],
+                                     stdin='devnull',
+                                     stderr='devnull',
+                                     stdout=subprocess.PIPE)
+        if pipe.wait() != 0: return
+        # clang -dumpversion is of no use
+        line = pipe.stdout.readline()
+        if sys.version_info[0] > 2:
+            line = line.decode()
+        match = re.search(r'clang +version +([0-9]+(?:\.[0-9]+)+)', line)
+        if match:
+            env['CCVERSION'] = match.group(1)
+
+def exists(env):
+    return env.Detect(compilers)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/src/engine/SCons/Tool/clang.xml b/src/engine/SCons/Tool/clang.xml
new file mode 100644
index 0000000..e2e50d4
--- /dev/null
+++ b/src/engine/SCons/Tool/clang.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+__COPYRIGHT__
+
+This file is processed by the bin/SConsDoc.py module.
+See its __doc__ string for a discussion of the format.
+-->
+
+<!DOCTYPE sconsdoc [
+<!ENTITY % scons SYSTEM '../../../../doc/scons.mod'>
+%scons;
+<!ENTITY % builders-mod SYSTEM '../../../../doc/generated/builders.mod'>
+%builders-mod;
+<!ENTITY % functions-mod SYSTEM '../../../../doc/generated/functions.mod'>
+%functions-mod;
+<!ENTITY % tools-mod SYSTEM '../../../../doc/generated/tools.mod'>
+%tools-mod;
+<!ENTITY % variables-mod SYSTEM '../../../../doc/generated/variables.mod'>
+%variables-mod;
+]>
+
+<sconsdoc xmlns="http://www.scons.org/dbxsd/v1.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">
+
+<tool name="clang">
+<summary>
+<para>
+Set construction variables for the Clang C compiler.
+</para>
+</summary>
+<sets>
+<item>CC</item>
+<item>SHCCFLAGS</item>
+<item>CCVERSION</item>
+</sets>
+</tool>
+
+</sconsdoc>
diff --git a/src/engine/SCons/Tool/clangxx.py b/src/engine/SCons/Tool/clangxx.py
new file mode 100644
index 0000000..dd501af
--- /dev/null
+++ b/src/engine/SCons/Tool/clangxx.py
@@ -0,0 +1,91 @@
+# -*- coding: utf-8; -*-
+
+"""SCons.Tool.clang++
+
+Tool-specific initialization for clang++.
+
+There normally shouldn't be any need to import this module directly.
+It will usually be imported through the generic SCons.Tool.Tool()
+selection method.
+
+"""
+
+#
+# __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__"
+
+# Based on SCons/Tool/g++.py by Paweł Tomulik 2014 as a separate tool.
+# Brought into the SCons mainline by Russel Winder 2017.
+
+import os.path
+import re
+import subprocess
+import sys
+
+import SCons.Tool
+import SCons.Util
+import SCons.Tool.cxx
+
+compilers = ['clang++']
+
+def generate(env):
+    """Add Builders and construction variables for clang++ to an Environment."""
+    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
+
+    SCons.Tool.cxx.generate(env)
+
+    env['CXX']        = env.Detect(compilers) or 'clang++'
+
+    # platform specific settings
+    if env['PLATFORM'] == 'aix':
+        env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS -mminimal-toc')
+        env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
+        env['SHOBJSUFFIX'] = '$OBJSUFFIX'
+    elif env['PLATFORM'] == 'hpux':
+        env['SHOBJSUFFIX'] = '.pic.o'
+    elif env['PLATFORM'] == 'sunos':
+        env['SHOBJSUFFIX'] = '.pic.o'
+    # determine compiler version
+    if env['CXX']:
+        pipe = SCons.Action._subproc(env, [env['CXX'], '--version'],
+                                     stdin='devnull',
+                                     stderr='devnull',
+                                     stdout=subprocess.PIPE)
+        if pipe.wait() != 0: return
+        # clang -dumpversion is of no use
+        line = pipe.stdout.readline()
+        if sys.version_info[0] > 2:
+            line = line.decode()
+        match = re.search(r'clang +version +([0-9]+(?:\.[0-9]+)+)', line)
+        if match:
+            env['CXXVERSION'] = match.group(1)
+
+def exists(env):
+    return env.Detect(compilers)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/src/engine/SCons/Tool/clangxx.xml b/src/engine/SCons/Tool/clangxx.xml
new file mode 100644
index 0000000..2c1c2ca
--- /dev/null
+++ b/src/engine/SCons/Tool/clangxx.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+__COPYRIGHT__
+
+This file is processed by the bin/SConsDoc.py module.
+See its __doc__ string for a discussion of the format.
+-->
+
+<!DOCTYPE sconsdoc [
+<!ENTITY % scons SYSTEM '../../../../doc/scons.mod'>
+%scons;
+<!ENTITY % builders-mod SYSTEM '../../../../doc/generated/builders.mod'>
+%builders-mod;
+<!ENTITY % functions-mod SYSTEM '../../../../doc/generated/functions.mod'>
+%functions-mod;
+<!ENTITY % tools-mod SYSTEM '../../../../doc/generated/tools.mod'>
+%tools-mod;
+<!ENTITY % variables-mod SYSTEM '../../../../doc/generated/variables.mod'>
+%variables-mod;
+]>
+
+<sconsdoc xmlns="http://www.scons.org/dbxsd/v1.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">
+
+<tool name="clangxx">
+<summary>
+<para>
+Set construction variables for the Clang C++ compiler.
+</para>
+</summary>
+<sets>
+<item>CXX</item>
+<item>SHCXXFLAGS</item>
+<item>STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME</item>
+<item>SHOBJSUFFIX</item>
+<item>CXXVERSION</item>
+</sets>
+</tool>
+
+</sconsdoc>
diff --git a/test/Clang/clang_default_environment.py b/test/Clang/clang_default_environment.py
new file mode 100644
index 0000000..4ac1c68
--- /dev/null
+++ b/test/Clang/clang_default_environment.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__"
+
+import TestSCons
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang', skipping test.\n")
+
+##  This will likely NOT use clang
+
+test.write('SConstruct', """
+env = Environment()
+if env['CC'] != 'clang':
+    env['CC'] = 'clang'
+env.Program('foo.c')
+""")
+
+test.write('foo.c', """\
+#include <stdio.h>
+int main(int argc, char ** argv) {
+    printf("Hello!");
+    return 0;
+}
+""")
+
+test.run()
+
+test.run(program=test.workpath('foo'+_exe))
+
+test.fail_test(not test.stdout() == 'Hello!')
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/test/Clang/clang_shared_library.py b/test/Clang/clang_shared_library.py
new file mode 100644
index 0000000..5e4d36f
--- /dev/null
+++ b/test/Clang/clang_shared_library.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__"
+
+import TestSCons
+from SCons.Environment import Base
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang', skipping test.\n")
+
+platform = Base()['PLATFORM']
+if platform == 'posix':
+    filename = 'foo.os'
+    libraryname = 'libfoo.so'
+elif platform == 'darwin':
+    filename = 'foo.os'
+    libraryname = 'libfoo.dylib'
+elif platform == 'win32':
+    filename = 'foo.obj'
+    libraryname = 'foo.dll'
+else:
+    test.fail_test()
+
+test.write('SConstruct', """\
+env = Environment(tools=['clang', 'link'])
+env.SharedLibrary('foo', 'foo.c')
+""")
+
+test.write('foo.c', """\
+int bar() {
+    return 42;
+}
+""")
+
+test.run()
+
+test.must_exist(test.workpath(filename))
+test.must_exist(test.workpath(libraryname))
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/test/Clang/clang_specific_environment.py b/test/Clang/clang_specific_environment.py
new file mode 100644
index 0000000..7266a9f
--- /dev/null
+++ b/test/Clang/clang_specific_environment.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__"
+
+import TestSCons
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang', skipping test.\n")
+
+test.write('SConstruct', """\
+env = Environment(tools=['clang', 'link'])
+env.Program('foo.c')
+""")
+
+test.write('foo.c', """\
+#include <stdio.h>
+int main(int argc, char ** argv) {
+    printf("Hello!");
+    return 0;
+}
+""")
+
+test.run()
+
+test.run(program=test.workpath('foo'+_exe))
+
+test.fail_test(not test.stdout() == 'Hello!')
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/test/Clang/clang_static_library.py b/test/Clang/clang_static_library.py
new file mode 100644
index 0000000..39e9931
--- /dev/null
+++ b/test/Clang/clang_static_library.py
@@ -0,0 +1,56 @@
+#!/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__"
+
+import TestSCons
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang', skipping test.\n")
+
+test.write('SConstruct', """\
+env = Environment(tools=['clang', 'ar'])
+env.StaticLibrary('foo', 'foo.c')
+""")
+
+test.write('foo.c', """\
+int bar() {
+    return 42;
+}
+""")
+
+test.run()
+
+test.must_exist(test.workpath('libfoo.a'))
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/test/Clang/clangxx_default_environment.py b/test/Clang/clangxx_default_environment.py
new file mode 100644
index 0000000..beef1e5
--- /dev/null
+++ b/test/Clang/clangxx_default_environment.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__"
+
+import TestSCons
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang++', skipping test.\n")
+
+## This will likely NOT use clang++.
+
+test.write('SConstruct', """\
+env = Environment()
+if env['CXX'] != 'clang++':
+    env['CXX'] = 'clang++'
+env.Program('foo.cpp')
+""")
+
+test.write('foo.cpp', """\
+#include <iostream>
+int main(int argc, char ** argv) {
+    std::cout << "Hello!" << std::endl;
+    return 0;
+}
+""")
+
+test.run()
+
+test.run(program=test.workpath('foo'+_exe))
+
+test.fail_test(not test.stdout() == 'Hello!\n')
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/test/Clang/clangxx_shared_library.py b/test/Clang/clangxx_shared_library.py
new file mode 100644
index 0000000..d6337ba
--- /dev/null
+++ b/test/Clang/clangxx_shared_library.py
@@ -0,0 +1,72 @@
+#!/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__"
+
+import TestSCons
+
+from SCons.Environment import Base
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang++', skipping test.\n")
+
+platform = Base()['PLATFORM']
+if platform == 'posix':
+    filename = 'foo.os'
+    libraryname = 'libfoo.so'
+elif platform == 'darwin':
+    filename = 'foo.os'
+    libraryname = 'libfoo.dylib'
+elif platform == 'win32':
+    filename = 'foo.obj'
+    libraryname = 'foo.dll'
+else:
+    test.fail_test()
+
+test.write('SConstruct', """\
+env = Environment(tools=['clang++', 'link'])
+env.SharedLibrary('foo', 'foo.cpp')
+""")
+
+test.write('foo.cpp', """\
+int bar() {
+    return 42;
+}
+""")
+
+test.run()
+
+test.must_exist(test.workpath(filename))
+test.must_exist(test.workpath(libraryname))
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/test/Clang/clangxx_specific_environment.py b/test/Clang/clangxx_specific_environment.py
new file mode 100644
index 0000000..773fa94
--- /dev/null
+++ b/test/Clang/clangxx_specific_environment.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__"
+
+import TestSCons
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang++', skipping test.\n")
+
+test.write('SConstruct', """\
+env = Environment(tools=['clang++', 'link'])
+env.Program('foo.cpp')
+""")
+
+test.write('foo.cpp', """\
+#include <iostream>
+int main(int argc, char ** argv) {
+    std::cout << "Hello!" << std::endl;
+    return 0;
+}
+""")
+
+test.run()
+
+test.run(program=test.workpath('foo'+_exe))
+
+test.fail_test(not test.stdout() == 'Hello!\n')
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/test/Clang/clangxx_static_library.py b/test/Clang/clangxx_static_library.py
new file mode 100644
index 0000000..77ea58e
--- /dev/null
+++ b/test/Clang/clangxx_static_library.py
@@ -0,0 +1,56 @@
+#!/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__"
+
+import TestSCons
+
+_exe = TestSCons._exe
+test = TestSCons.TestSCons()
+
+if not test.where_is('clang'):
+    test.skip_test("Could not find 'clang++', skipping test.\n")
+
+test.write('SConstruct', """\
+env = Environment(tools=['clang++', 'ar'])
+env.StaticLibrary('foo', 'foo.cpp')
+""")
+
+test.write('foo.cpp', """\
+int bar() {
+    return 42;
+}
+""")
+
+test.run()
+
+test.must_exist(test.workpath('libfoo.a'))
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: