Hi mclow.lists, danalbert, jroelofs,
In order to fully replace the testit script we need to update LIT so it
provides the same functionality.
This patch adds a number of different configuration options to LIT to do that.
It also adds documentation for all of the command line parameters that LIT
supports.
Generic options added:
- `libcxx_headers`
- `libcxx_library`
- `compile_flags`
- `enable_warnings`
Generic options modified:
- `use_clang_verify`: Changed the semantics of the switch
- `link_flags`: Changed from overriding the default args to adding extra args
instead (to match compile flags)
- `use_sanitizer`: Renamed from `llvm_use_sanitizer`
The ability to use scan-build overtop of the tests was added. The test fails if
scan-build finds any issues.
Scan build Options:
- `use_scan_build`
- `scan_build_output`
-`scan_build_args`
The ability to use `clang-tidy` has also been added.
Clang tidy options:
- `use_clang_tidy`
- `clang_tidy_args`.
Please see the added documentation for more information about the switches. As
for the actual documentation I'm not sure if it should be kept in libc++
forever since it adds an undue maintenance burden, but I think it should be
added for the time being while the changes are new. I'm verify unskilled with
HTML so if the documentation needs any changes please let me know.
Hopefully this will kill testit.
http://reviews.llvm.org/D5877
Files:
test/lit.cfg
test/lit.site.cfg.in
www/index.html
www/lit_usage.html
Index: test/lit.cfg
===================================================================
--- test/lit.cfg
+++ test/lit.cfg
@@ -18,6 +18,9 @@
import lit.formats
import lit.util
+
+
+
class LibcxxTestFormat(lit.formats.FileBasedTest):
"""
Custom test format handler for use with the test format use by libc++.
@@ -29,12 +32,22 @@
"""
def __init__(self, cxx_under_test, use_verify_for_fail,
- cpp_flags, ld_flags, exec_env):
+ cpp_flags, ld_flags, exec_env,
+ use_scan_build = None,
+ scan_build_output = None,
+ scan_build_args = [],
+ use_clang_tidy = None,
+ clang_tidy_args = []):
self.cxx_under_test = cxx_under_test
self.use_verify_for_fail = use_verify_for_fail
self.cpp_flags = list(cpp_flags)
self.ld_flags = list(ld_flags)
self.exec_env = dict(exec_env)
+ self.use_scan_build = use_scan_build
+ self.scan_build_output = scan_build_output
+ self.scan_build_args = list(scan_build_args)
+ self.use_clang_tidy = use_clang_tidy
+ self.clang_tidy_args = list(clang_tidy_args)
def execute_command(self, command, in_dir=None):
kwargs = {
@@ -144,11 +157,23 @@
exec_file.close()
try:
+ if self.use_clang_tidy:
+ status,report = self._execute_clang_tidy_test(source_path)
+ if status != lit.Test.PASS:
+ return status,report
+
compile_cmd = [self.cxx_under_test, '-o', exec_path,
source_path] + self.cpp_flags + self.ld_flags
- cmd = compile_cmd
+ if self.use_scan_build:
+ cmd = [self.use_scan_build, '--status-bugs',
+ '-o', self.scan_build_output] + self.scan_build_args
+ else:
+ cmd = []
+ cmd += compile_cmd
out, err, exitCode = self.execute_command(cmd)
- if exitCode != 0:
+ if exitCode != 0 or (self.use_scan_build and
+ (not os.path.exists(exec_path)
+ or os.path.getsize(exec_path) == 0)):
report = """Command: %s\n""" % ' '.join(["'%s'" % a
for a in cmd])
report += """Exit Code: %d\n""" % exitCode
@@ -187,12 +212,29 @@
pass
return lit.Test.PASS, ""
+ def _execute_clang_tidy_test(self, source_file):
+ cmd = [self.use_clang_tidy] + self.clang_tidy_args + [source_file]
+ cmd += ['--'] + self.cpp_flags
+ out, err, exitCode = self.execute_command(cmd)
+ if exitCode != 0 or out.strip():
+ report = """Command: %s\n""" % ' '.join(["'%s'" % a
+ for a in cmd])
+ report += """Exit Code: %d\n""" % exitCode
+ if out:
+ report += """Standard Output:\n--\n%s--""" % out
+ if err:
+ report += """Standard Error:\n--\n%s--""" % err
+ report += "\n\nCompilation failed unexpectedly!"
+ return lit.Test.FAIL, report
+ return lit.Test.PASS, ""
+
class Configuration(object):
def __init__(self, lit_config, config):
self.lit_config = lit_config
self.config = config
self.cxx = None
+ self.cxx_info = None
self.src_root = None
self.obj_root = None
self.env = {}
@@ -201,6 +243,11 @@
self.link_flags = []
self.use_system_lib = False
self.use_clang_verify = False
+ self.use_scan_build = None
+ self.scan_build_output = None
+ self.scan_build_args = []
+ self.use_clang_tidy = None
+ self.clang_tidy_args = []
if platform.system() not in ('Darwin', 'FreeBSD', 'Linux'):
self.lit_config.fatal("unrecognized system")
@@ -217,9 +264,20 @@
conf = self.get_lit_conf(name)
if conf is None:
return None
- if conf.lower() in ('1', 'true'):
+ if conf.lower() in ('1', 'true', 'on'):
return True
- if conf.lower() in ('', '0', 'false'):
+ if conf.lower() in ('', '0', 'false', 'off'):
+ return False
+ self.lit_config.fatal(
+ "parameter '{}' should be true or false".format(name))
+
+ def get_lit_switch(self, name):
+ s = self.get_lit_conf(name)
+ if s is None:
+ return False
+ elif s.lower() in ('', '1', 'true', 'on'):
+ return True
+ elif s.lower() in ('0', 'false', 'off'):
return False
self.lit_config.fatal(
"parameter '{}' should be true or false".format(name))
@@ -231,11 +289,13 @@
self.configure_obj_root()
self.configure_use_system_lib()
self.configure_use_clang_verify()
- self.configure_env()
self.configure_std_flag()
self.configure_compile_flags()
self.configure_link_flags()
self.configure_sanitizer()
+ self.configure_warnings()
+ self.configure_scan_build()
+ self.configure_clang_tidy()
self.configure_features()
def get_test_format(self):
@@ -244,7 +304,12 @@
self.use_clang_verify,
cpp_flags=['-nostdinc++'] + self.compile_flags,
ld_flags=['-nodefaultlibs'] + self.link_flags,
- exec_env=self.env)
+ exec_env=self.env,
+ use_scan_build=self.use_scan_build,
+ scan_build_output=self.scan_build_output,
+ scan_build_args=self.scan_build_args,
+ use_clang_tidy=self.use_clang_tidy,
+ clang_tidy_args=self.clang_tidy_args)
def configure_cxx(self):
# Gather various compiler parameters.
@@ -284,12 +349,8 @@
def configure_use_clang_verify(self):
'''If set, run clang with -verify on failing tests.'''
- self.use_clang_verify = self.get_lit_bool('use_clang_verify')
- if self.use_clang_verify is None:
- # TODO: Default this to True when using clang.
- self.use_clang_verify = False
- self.lit_config.note(
- "inferred use_clang_verify as: %r" % self.use_clang_verify)
+ self.use_clang_verify = self.get_lit_switch('use_clang_verify')
+
def configure_features(self):
additional_features = self.get_lit_conf('additional_features')
@@ -364,54 +425,76 @@
self.compile_flags += ['-D_LIBCPP_HAS_NO_MONOTONIC_CLOCK']
def configure_compile_flags(self):
+ # Check if libcxx_headers is defined. If it is then use that as
+ # the location for the libcxx headers.
+ libcxx_headers = self.get_lit_conf('libcxx_headers',
+ self.src_root + '/include')
# Configure extra compiler flags.
- self.compile_flags += ['-I' + self.src_root + '/include',
+ self.compile_flags += ['-I' + libcxx_headers,
'-I' + self.src_root + '/test/support']
if sys.platform == 'linux2':
self.compile_flags += ['-D__STDC_FORMAT_MACROS',
'-D__STDC_LIMIT_MACROS',
'-D__STDC_CONSTANT_MACROS']
+ # Add extra compile flags as specified on the command line.
+ extra_flags = self.get_lit_conf('compile_flags')
+ if extra_flags:
+ self.compile_flags += shlex.split(extra_flags)
def configure_link_flags(self):
- # Configure library search paths
- abi_library_path = self.get_lit_conf('abi_library_path', '')
- self.link_flags += ['-L' + self.obj_root + '/lib']
- if not self.use_system_lib:
- self.link_flags += ['-Wl,-rpath', '-Wl,' + self.obj_root + '/lib']
+ # Configure libc++ library
+ libcxx_library = self.get_lit_conf('libcxx_library')
+ # Ignore and warn if use_system_lib is true and libcxx_library is specified.
+ if self.use_system_lib and libcxx_library:
+ self.lit_config.warning(
+ 'Conflicting options detected: libcxx_library and use_system_lib')
+ libcxx_library = None
+ # Link to the specific libc++ library if specified. Otherwise link to -lc++
+ # and add the build directory as a search path if use_system_lib is False.
+ if libcxx_library:
+ self.link_flags += [libcxx_library, '-Wl,-rpath',
+ '-Wl,' + os.path.dirname(libcxx_library)]
+ else:
+ self.link_flags += ['-lc++']
+ if not self.use_system_lib:
+ self.link_flags += ['-L' + self.obj_root + '/lib', '-Wl,-rpath',
+ '-Wl,' + self.obj_root + '/lib']
+
+ # Add a search path for the ABI library path if specified.
+ abi_library_path = self.get_lit_conf('abi_library_path')
if abi_library_path:
self.link_flags += ['-L' + abi_library_path,
'-Wl,-rpath', '-Wl,' + abi_library_path]
- # Configure libraries
- self.link_flags += ['-lc++']
- link_flags_str = self.get_lit_conf('link_flags')
- if link_flags_str is None:
- cxx_abi = self.get_lit_conf('cxx_abi', 'libcxxabi')
- if cxx_abi == 'libstdc++':
- self.link_flags += ['-lstdc++']
- elif cxx_abi == 'libsupc++':
- self.link_flags += ['-lsupc++']
- elif cxx_abi == 'libcxxabi':
- self.link_flags += ['-lc++abi']
- elif cxx_abi == 'libcxxrt':
- self.link_flags += ['-lcxxrt']
- elif cxx_abi == 'none':
- pass
- else:
- self.lit_config.fatal(
- 'C++ ABI setting %s unsupported for tests' % cxx_abi)
-
- if sys.platform == 'darwin':
- self.link_flags += ['-lSystem']
- elif sys.platform == 'linux2':
- self.link_flags += ['-lgcc_eh', '-lc', '-lm', '-lpthread',
- '-lrt', '-lgcc_s']
- elif sys.platform.startswith('freebsd'):
- self.link_flags += ['-lc', '-lm', '-pthread', '-lgcc_s']
- else:
- self.lit_config.fatal("unrecognized system: %r" % sys.platform)
+
+ cxx_abi = self.get_lit_conf('cxx_abi', 'libcxxabi')
+ if cxx_abi == 'libstdc++':
+ self.link_flags += ['-lstdc++']
+ elif cxx_abi == 'libsupc++':
+ self.link_flags += ['-lsupc++']
+ elif cxx_abi == 'libcxxabi':
+ self.link_flags += ['-lc++abi']
+ elif cxx_abi == 'libcxxrt':
+ self.link_flags += ['-lcxxrt']
+ elif cxx_abi == 'none':
+ pass
+ else:
+ self.lit_config.fatal(
+ 'C++ ABI setting %s unsupported for tests' % cxx_abi)
+
+ if sys.platform == 'darwin':
+ self.link_flags += ['-lSystem']
+ elif sys.platform == 'linux2':
+ self.link_flags += ['-lgcc_eh', '-lc', '-lm', '-lpthread',
+ '-lrt', '-lgcc_s']
+ elif sys.platform.startswith('freebsd'):
+ self.link_flags += ['-lc', '-lm', '-pthread', '-lgcc_s']
+ else:
+ self.lit_config.fatal("unrecognized system: %r" % sys.platform)
self.lit_config.note(
"inferred link_flags as: %r" % self.link_flags)
+
+ link_flags_str = self.get_lit_conf('link_flags')
if link_flags_str:
self.link_flags += shlex.split(link_flags_str)
@@ -428,25 +511,74 @@
self.config.available_features.add(std)
def configure_sanitizer(self):
- san = self.get_lit_conf('llvm_use_sanitizer', '').strip()
+ san = self.get_lit_conf('use_sanitizer').strip()
if san:
- self.compile_flags += ['-fno-omit-frame-pointer']
+ if san == 'None':
+ return
+ san_flags = []
+ san_flags += ['-fno-omit-frame-pointer']
if san == 'Address':
- self.compile_flags += ['-fsanitize=address']
+ san_flags += ['-fsanitize=address']
self.config.available_features.add('asan')
elif san == 'Memory' or san == 'MemoryWithOrigins':
- self.compile_flags += ['-fsanitize=memory']
+ san_flags += ['-fsanitize=memory']
if san == 'MemoryWithOrigins':
- self.compile_flags += ['-fsanitize-memory-track-origins']
+ san_flags += ['-fsanitize-memory-track-origins']
self.config.available_features.add('msan')
elif san == 'Undefined':
- self.compile_flags += ['-fsanitize=undefined',
- '-fno-sanitize=vptr,function',
- '-fno-sanitize-recover']
+ san_flags += ['-fsanitize=undefined',
+ '-fno-sanitize=vptr,function',
+ '-fno-sanitize-recover']
self.config.available_features.add('ubsan')
else:
self.lit_config.fatal('unsupported value for '
'libcxx_use_san: {0}'.format(san))
+ self._configure_sanitizer_libraries(san_flags)
+
+ def configure_warnings(self):
+ enable_warnings = self.get_lit_bool('enable_warnings')
+ if enable_warnings:
+ self.lit_config.note('Enabling warnings')
+ self.compile_flags += ['-Wall', '-Wextra', '-pedantic',
+ '-D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER']
+
+ def configure_scan_build(self):
+ self.use_scan_build = self.get_lit_conf('use_scan_build')
+ if self.use_scan_build is None:
+ return
+ if self.use_scan_build == '':
+ self.use_scan_build = 'scan-build'
+ self.lit_config.note(
+ 'Using scan-build: %s' % self.use_scan_build)
+ output = self.get_lit_conf('scan_build_output')
+ if output is None:
+ output = tempfile.mkdtemp(suffix='', prefix='libcxx-scan-build-')
+ self.lit_config.note('Writing scan-build output to: %s' % output)
+ self.scan_build_output = output
+ args = self.get_lit_conf('scan_build_args')
+ if args:
+ args = shlex.split(args)
+ else:
+ args = ['-analyze-headers']
+ self.lit_config.note('Using scan-build args: %r' % args)
+ self.scan_build_args = args
+
+ def configure_clang_tidy(self):
+ self.use_clang_tidy = self.get_lit_conf('use_clang_tidy')
+ if self.use_clang_tidy is None:
+ return
+ if self.use_clang_tidy == '':
+ self.use_clang_tidy = 'clang-tidy'
+ self.lit_config.note(
+ 'Using clang-tidy: %s' % self.use_clang_tidy)
+ args = self.get_lit_conf('clang_tidy_args')
+ if args is not None:
+ self.clang_tidy_args = shlex.split(args)
+ else:
+ self.clang_tidy_args = ["-checks=-misc-*,clang-analyzer-*",
+ "-header-filter='*'"]
+ self.lit_config.note('Using clang-tidy args: %r' % self.clang_tidy_args)
+
def configure_triple(self):
# Get or infer the target triple.
@@ -459,13 +591,6 @@
self.lit_config.note(
"inferred target_triple as: %r" % self.config.target_triple)
- def configure_env(self):
- # Configure extra linker parameters.
- if sys.platform == 'darwin':
- if not self.use_system_lib:
- self.env['DYLD_LIBRARY_PATH'] = os.path.join(self.obj_root,
- 'lib')
-
# name: The name of this test suite.
config.name = 'libc++'
Index: test/lit.site.cfg.in
===================================================================
--- test/lit.site.cfg.in
+++ test/lit.site.cfg.in
@@ -6,8 +6,8 @@
config.python_executable = "@PYTHON_EXECUTABLE@"
config.enable_shared = @LIBCXX_ENABLE_SHARED@
config.cxx_abi = "@LIBCXX_CXX_ABI_LIBNAME@"
-config.llvm_use_sanitizer = "@LLVM_USE_SANITIZER@"
config.abi_library_path = "@LIBCXX_CXX_ABI_LIBRARY_PATH@"
+config.use_sanitizer = "@LLVM_USE_SANITIZER@"
# Let the main config do the real work.
lit_config.load_config(config, "@LIBCXX_SOURCE_DIR@/test/lit.cfg")
Index: www/index.html
===================================================================
--- www/index.html
+++ www/index.html
@@ -476,6 +476,7 @@
<li><a href="type_traits_design.html"><tt><type_traits></tt></a></li>
<li><a href="http://cplusplusmusings.wordpress.com/2012/07/05/clang-and-standard-libraries-on-mac-os-x/";>Excellent notes by Marshall Clow</a></li>
<li><a href="debug_mode.html">Status of debug mode</a></li>
+<li><a href="lit_usage.html">Using LIT on the command line</a></li>
</ul>
</div>
Index: www/lit_usage.html
===================================================================
--- /dev/null
+++ www/lit_usage.html
@@ -0,0 +1,226 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
+ "http://www.w3.org/TR/html4/strict.dtd";>
+<!-- Material used from: HTML 4.01 specs: http://www.w3.org/TR/html401/ -->
+<html>
+<head>
+ <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+ <title>Testing libc++ using LIT</title>
+ <link type="text/css" rel="stylesheet" href="menu.css">
+ <link type="text/css" rel="stylesheet" href="content.css">
+ <style>
+ .lit-option {
+ padding-top: 0.5em;
+ margin-bottom: 0.0em;
+ font-size: medium;
+ color:#2d58b7
+ }
+ .lit-option-desc {
+ display: block;
+ margin-top: 0em;
+ margin-bottom: 0em;
+ margin-left: 20px;
+ margin-right: 20px;
+ }
+ </style>
+</head>
+
+<body>
+<div id="menu">
+ <div>
+ <a href="http://llvm.org/";>LLVM Home</a>
+ </div>
+
+ <div class="submenu">
+ <label>libc++ Info</label>
+ <a href="/index.html">About</a>
+ </div>
+
+ <div class="submenu">
+ <label>Quick Links</label>
+ <a href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev";>cfe-dev</a>
+ <a href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits";>cfe-commits</a>
+ <a href="http://llvm.org/bugs/";>Bug Reports</a>
+ <a href="http://llvm.org/svn/llvm-project/libcxx/trunk/";>Browse SVN</a>
+ <a href="http://llvm.org/viewvc/llvm-project/libcxx/trunk/";>Browse ViewVC</a>
+ </div>
+</div>
+
+<div id="content">
+<!--*********************************************************************-->
+ <h1>Testing libc++ using LIT</h1>
+<!--*********************************************************************-->
+<p>
+libc++ uses LIT to configure and run it's tests. The primary way to run the
+libc++ tests is by using <code>make check-libcxx</code>. However since libc++
+can be used in any number of possible configurations it is important to
+customize the way LIT builds and runs the tests. This guide provides
+information on how to use LIT directly to test libc++.
+</p>
+<p>
+Documentation for LIT can be found
+<a href='http://llvm.org/docs/CommandGuide/lit.html'>here</a>.
+</p>
+
+<!--*********************************************************************-->
+ <h2>Getting Started</h2>
+<!--*********************************************************************-->
+<p>
+After building libc++ use the following commands before you start using LIT to
+test.
+</p>
+<ul>
+ <li><code>alias lit='python path/to/llvm/utils/lit/lit.py'</code></li>
+ <li><code>ln -s path/to/libcxx-build/test/lit.site.cfg path/to/libcxx/test/lit.site.cfg</code></li>
+</ul>
+<p>
+You can now run the libc++ tests by running:
+</p>
+<ul>
+ <li><code>cd path/to/libcxx</code></li>
+ <li><code>lit -sv ./test</code></li>
+</ul>
+<p>
+To only run a subsection of the tests use:
+<ul>
+ <li><code>lit -sv test/numerics # Run only the numeric tests</code></li>
+</ul>
+
+<!--*********************************************************************-->
+ <h2>Customization Options</h2>
+<!--*********************************************************************-->
+<p>
+libc++'s testsuite provides multiple options to configure the way the tests
+are build and run. To use these options you pass them on the LIT command line
+as <code>--param NAME</code> or <code>--param NAME=VALUE</code>. Some options
+have default values specified during CMake's configuration. Passing the option
+on the command line will override the default.
+</p>
+
+<p>
+<h3 class="lit-option">libcxx_headers=<path/to/headers></h3>
+<blockquote class="lit-option-desc">
+Specify the libc++ headers that are tested. By default the headers in the source
+tree are used.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">libcxx_library=<path/to/libc++.so></h3>
+<blockquote class="lit-option-desc">
+Specify the libc++ library that is tested. By default the library in the build
+directory is used. This option has no effect if <code>use_system_lib</code> is provided.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">use_system_lib=<bool></h3>
+<blockquote class="lit-option-desc">
+<b>Default: </b><code>False</code></br>
+Enable or disable testing against the installed version of libc++ library.
+Note: This does not use the installed headers.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">compile_flags="<list-of-args>"</h3>
+<blockquote class="lit-option-desc">
+Specify an additional list of compile flags to use.
+Note: This options should not be used to change the standard version used.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">link_flags="<list-of-args>"</h3>
+<blockquote class="lit-option-desc">
+Specify an additional list of linker flags to use.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">std=<standard version></h3>
+<blockquote class="lit-option-desc">
+<b>Values: </b><code>c++98, c++03, c++11, c++1z, c++14</code></br>
+Change the standard version used when building the tests.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">use_sanitizer=<sanitizer name></h3>
+<blockquote class="lit-option-desc">
+<b>Values: </b><code>Memory, MemoryWithOrigins, Address, Undefined, None</code></br>
+Run the tests using the given sanitizer. If <code>LLVM_USE_SANITIZER</code>
+was given when building libc++ then that sanitizer will be used by default.
+If <code>None</code> is given then no sanitizer will be used.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">enable_warnings[=<bool>]</h3>
+<blockquote class="lit-option-desc">
+<b>Default: </b><code>False</code><br>
+Enable <code>-Wall -Wextra -pedantic</code> as well as disabling
+the system header pragmas.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">use_clang_verify[=<bool>]</h3>
+<blockquote class="lit-option-desc">
+<b>Default: </b><code>False</code><br>
+Enable the use of clang verif on tests that expect a compilation error.
+This verifies that the test fails to compile for the right reason.
+</blockquote>
+</p>
+
+<h2>Scan Build Options</h2>
+
+<p>
+<h3 class="lit-option">use_scan_build[=<path/to/scan-build>]</h3>
+<blockquote class="lit-option-desc">
+When specified the tests are compiled through scan-build. The optional value is
+used to specify the scan-build executable to use. If scan-build finds a defect
+the test will fail.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">scan_build_output=<path/to/scan-build/output></h3>
+<blockquote class="lit-option-desc">
+Specify a folder in which to store the scan-build output. If scan-build is
+used without this option a temporary directory is created and reported at the
+start of the LIT run.
+</blockquote>
+</p>
+
+<p>
+<h3 class="lit-option">scan_build_args="<list-of-args>"</h3>
+<blockquote class="lit-option-desc">
+<b>Default: </b><code>-analyze-headers</code><br>
+Specify a list of args to be passed to <code>scan-build</code>.
+</blockquote>
+</p>
+
+<h2>Clang Tidy Options</h2>
+
+<p>
+<h3 class="lit-option">use_clang_tidy[=<path/to/clang-tidy></h3>
+<blockquote class="lit-option_desc">
+When specified the tests are run through clang-tidy as an extra step. The test
+will fail if clang-tidy produces any output. The option value is used to specify
+the clang-tidy executable to use.
+</blockquote>
+</p>
+
+
+<p>
+<h3 class="lit-option">clang_tidy_args="<list-of-args>"</h3>
+<blockquote class="lit-option_desc">
+<b>Default: </b><code>-checks=clang-analyzer-* -header-filter='*'</code><br>
+Specify a list of args to be passed to <code>clang-tidy</code>.
+</blockquote>
+</p>
+
+
+</div>
+</body>
+</html>
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