1 # -*- Python -*- vim: set syntax=python tabstop=4 expandtab cc=80:
3 # Configuration file for the 'lit' test runner.
20 class LibcxxTestFormat(lit.formats.FileBasedTest):
22 Custom test format handler for use with the test format use by libc++.
24 Tests fall into two categories:
25 FOO.pass.cpp - Executable test which should compile, run, and exit with
27 FOO.fail.cpp - Negative test case which is expected to fail compilation.
30 def __init__(self, cxx_under_test, cpp_flags, ld_flags, exec_env):
31 self.cxx_under_test = cxx_under_test
32 self.cpp_flags = list(cpp_flags)
33 self.ld_flags = list(ld_flags)
34 self.exec_env = dict(exec_env)
36 def execute_command(self, command, in_dir=None):
38 'stdin' :subprocess.PIPE,
39 'stdout':subprocess.PIPE,
40 'stderr':subprocess.PIPE,
43 kwargs['cwd'] = in_dir
44 p = subprocess.Popen(command, **kwargs)
45 out,err = p.communicate()
48 # Detect Ctrl-C in subprocess.
49 if exitCode == -signal.SIGINT:
50 raise KeyboardInterrupt
52 return out, err, exitCode
54 def execute(self, test, lit_config):
57 return self._execute(test, lit_config)
59 if oe.errno != errno.ETXTBSY:
63 def _execute(self, test, lit_config):
64 # Extract test metadata from the test file.
66 with open(test.getSourcePath()) as f:
69 items = ln[ln.index('XFAIL:') + 6:].split(',')
70 test.xfails.extend([s.strip() for s in items])
71 elif 'REQUIRES:' in ln:
72 items = ln[ln.index('REQUIRES:') + 9:].split(',')
73 requires.extend([s.strip() for s in items])
74 elif not ln.startswith("//") and ln.strip():
75 # Stop at the first non-empty line that is not a C++
79 # Check that we have the required features.
81 # FIXME: For now, this is cribbed from lit.TestRunner, to avoid
82 # introducing a dependency there. What we more ideally would like to do
83 # is lift the "requires" handling to be a core lit framework feature.
84 missing_required_features = [f for f in requires
85 if f not in test.config.available_features]
86 if missing_required_features:
87 return (lit.Test.UNSUPPORTED,
88 "Test requires the following features: %s" % (
89 ', '.join(missing_required_features),))
92 return self._evaluate_test(test, lit_config)
94 def _evaluate_test(self, test, lit_config):
95 name = test.path_in_suite[-1]
96 source_path = test.getSourcePath()
97 source_dir = os.path.dirname(source_path)
99 # Check what kind of test this is.
100 assert name.endswith('.pass.cpp') or name.endswith('.fail.cpp')
101 expected_compile_fail = name.endswith('.fail.cpp')
103 # If this is a compile (failure) test, build it and check for failure.
104 if expected_compile_fail:
105 cmd = [self.cxx_under_test, '-c',
106 '-o', '/dev/null', source_path] + self.cpp_flags
107 out, err, exitCode = self.execute_command(cmd)
109 return lit.Test.PASS, ""
111 report = """Command: %s\n""" % ' '.join(["'%s'" % a
113 report += """Exit Code: %d\n""" % exitCode
115 report += """Standard Output:\n--\n%s--""" % out
117 report += """Standard Error:\n--\n%s--""" % err
118 report += "\n\nExpected compilation to fail!"
119 return lit.Test.FAIL, report
121 exec_file = tempfile.NamedTemporaryFile(suffix="exe", delete=False)
122 exec_path = exec_file.name
126 compile_cmd = [self.cxx_under_test, '-o', exec_path,
127 source_path] + self.cpp_flags + self.ld_flags
129 out, err, exitCode = self.execute_command(cmd)
131 report = """Command: %s\n""" % ' '.join(["'%s'" % a
133 report += """Exit Code: %d\n""" % exitCode
135 report += """Standard Output:\n--\n%s--""" % out
137 report += """Standard Error:\n--\n%s--""" % err
138 report += "\n\nCompilation failed unexpectedly!"
139 return lit.Test.FAIL, report
144 cmd.extend('%s=%s' % (name, value)
145 for name,value in self.exec_env.items())
146 cmd.append(exec_path)
147 if lit_config.useValgrind:
148 cmd = lit_config.valgrindArgs + cmd
149 out, err, exitCode = self.execute_command(cmd, source_dir)
151 report = """Compiled With: %s\n""" % \
152 ' '.join(["'%s'" % a for a in compile_cmd])
153 report += """Command: %s\n""" % \
154 ' '.join(["'%s'" % a for a in cmd])
155 report += """Exit Code: %d\n""" % exitCode
157 report += """Standard Output:\n--\n%s--""" % out
159 report += """Standard Error:\n--\n%s--""" % err
160 report += "\n\nCompiled test failed unexpectedly!"
161 return lit.Test.FAIL, report
167 return lit.Test.PASS, ""
169 # name: The name of this test suite.
170 config.name = 'libc++'
172 # suffixes: A list of file extensions to treat as test files.
173 config.suffixes = ['.cpp']
175 # test_source_root: The root path where tests are located.
176 config.test_source_root = os.path.dirname(__file__)
178 # Gather various compiler parameters.
179 cxx_under_test = lit_config.params.get('cxx_under_test', None)
180 if cxx_under_test is None:
181 cxx_under_test = getattr(config, 'cxx_under_test', None)
183 # If no specific cxx_under_test was given, attempt to infer it as clang++.
184 clangxx = lit.util.which('clang++', config.environment['PATH'])
185 if clangxx is not None:
186 cxx_under_test = clangxx
187 lit_config.note("inferred cxx_under_test as: %r" % (cxx_under_test,))
188 if cxx_under_test is None:
189 lit_config.fatal('must specify user parameter cxx_under_test '
190 '(e.g., --param=cxx_under_test=clang++)')
192 libcxx_src_root = lit_config.params.get('libcxx_src_root', None)
193 if libcxx_src_root is None:
194 libcxx_src_root = getattr(config, 'libcxx_src_root', None)
195 if libcxx_src_root is None:
196 libcxx_src_root = os.path.dirname(config.test_source_root)
198 libcxx_obj_root = lit_config.params.get('libcxx_obj_root', None)
199 if libcxx_obj_root is None:
200 libcxx_obj_root = getattr(config, 'libcxx_obj_root', None)
201 if libcxx_obj_root is None:
202 libcxx_obj_root = libcxx_src_root
204 cxx_has_stdcxx0x_flag_str = lit_config.params.get('cxx_has_stdcxx0x_flag', None)
205 if cxx_has_stdcxx0x_flag_str is not None:
206 if cxx_has_stdcxx0x_flag_str.lower() in ('1', 'true'):
207 cxx_has_stdcxx0x_flag = True
208 elif cxx_has_stdcxx0x_flag_str.lower() in ('', '0', 'false'):
209 cxx_has_stdcxx0x_flag = False
212 'user parameter cxx_has_stdcxx0x_flag_str should be 0 or 1')
214 cxx_has_stdcxx0x_flag = getattr(config, 'cxx_has_stdcxx0x_flag', True)
216 # This test suite supports testing against either the system library or the
217 # locally built one; the former mode is useful for testing ABI compatibility
218 # between the current headers and a shipping dynamic library.
219 use_system_lib_str = lit_config.params.get('use_system_lib', None)
220 if use_system_lib_str is not None:
221 if use_system_lib_str.lower() in ('1', 'true'):
222 use_system_lib = True
223 elif use_system_lib_str.lower() in ('', '0', 'false'):
224 use_system_lib = False
226 lit_config.fatal('user parameter use_system_lib should be 0 or 1')
228 # Default to testing against the locally built libc++ library.
229 use_system_lib = False
230 lit_config.note("inferred use_system_lib as: %r" % (use_system_lib,))
233 link_flags_str = lit_config.params.get('link_flags', None)
234 if link_flags_str is None:
235 link_flags_str = getattr(config, 'link_flags', None)
236 if link_flags_str is None:
237 cxx_abi = getattr(config, 'cxx_abi', 'libcxxabi')
238 if cxx_abi == 'libstdc++':
239 link_flags += ['-lstdc++']
240 elif cxx_abi == 'libsupc++':
241 link_flags += ['-lsupc++']
242 elif cxx_abi == 'libcxxabi':
243 link_flags += ['-lc++abi']
244 elif cxx_abi == 'none':
247 lit_config.fatal('C++ ABI setting %s unsupported for tests' % cxx_abi)
249 if sys.platform == 'darwin':
250 link_flags += ['-lSystem']
251 elif sys.platform == 'linux2':
252 link_flags += [ '-lgcc_eh', '-lc', '-lm', '-lpthread',
255 lit_config.fatal("unrecognized system")
257 lit_config.note("inferred link_flags as: %r" % (link_flags,))
258 if not link_flags_str is None:
259 link_flags += shlex.split(link_flags_str)
261 # Configure extra compiler flags.
262 include_paths = ['-I' + libcxx_src_root + '/include',
263 '-I' + libcxx_src_root + '/test/support']
264 library_paths = ['-L' + libcxx_obj_root + '/lib']
266 if cxx_has_stdcxx0x_flag:
267 compile_flags += ['-std=c++0x']
269 # Configure extra linker parameters.
271 if sys.platform == 'darwin':
272 if not use_system_lib:
273 exec_env['DYLD_LIBRARY_PATH'] = os.path.join(libcxx_obj_root, 'lib')
274 elif sys.platform == 'linux2':
275 if not use_system_lib:
276 link_flags += ['-Wl,-R', libcxx_obj_root + '/lib']
277 compile_flags += ['-D__STDC_FORMAT_MACROS', '-D__STDC_LIMIT_MACROS',
278 '-D__STDC_CONSTANT_MACROS']
280 lit_config.fatal("unrecognized system")
282 config.test_format = LibcxxTestFormat(
284 cpp_flags = ['-nostdinc++'] + compile_flags + include_paths,
285 ld_flags = ['-nodefaultlibs'] + library_paths + ['-lc++'] + link_flags,
288 # Get or infer the target triple.
289 config.target_triple = lit_config.params.get('target_triple', None)
290 # If no target triple was given, try to infer it from the compiler under test.
291 if config.target_triple is None:
292 config.target_triple = lit.util.capture(
293 [cxx_under_test, '-dumpmachine']).strip()
294 lit_config.note("inferred target_triple as: %r" % (config.target_triple,))
296 # Write an "available feature" that combines the triple when use_system_lib is
297 # enabled. This is so that we can easily write XFAIL markers for tests that are
298 # known to fail with versions of libc++ as were shipped with a particular
301 # Drop sub-major version components from the triple, because the current
302 # XFAIL handling expects exact matches for feature checks.
303 sanitized_triple = re.sub(r"([^-]+)-([^-]+)-([^-.]+).*", r"\1-\2-\3",
304 config.target_triple)
305 config.available_features.add('with_system_lib=%s' % (sanitized_triple,))