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# -*- Python -*-
# Configuration file for the 'lit' test runner.
import os
import sys
import platform
import tempfile
import signal
import subprocess
class LibcxxTestFormat(lit.formats.FileBasedTest):
"""
Custom test format handler for use with the test format use by libc++.
Tests fall into two categories:
FOO.pass.cpp - Executable test which should compile, run, and exit with
code 0.
FOO.fail.cpp - Negative test case which is expected to fail compilation.
"""
def __init__(self, cxx_under_test, cpp_flags, ld_flags):
self.cxx_under_test = cxx_under_test
self.cpp_flags = list(cpp_flags)
self.ld_flags = list(ld_flags)
def execute_command(self, command):
p = subprocess.Popen(command, stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out,err = p.communicate()
exitCode = p.wait()
# Detect Ctrl-C in subprocess.
if exitCode == -signal.SIGINT:
raise KeyboardInterrupt
return out, err, exitCode
def execute(self, test, lit_config):
name = test.path_in_suite[-1]
source_path = test.getSourcePath()
# Check what kind of test this is.
assert name.endswith('.pass.cpp') or name.endswith('.fail.cpp')
expected_compile_fail = name.endswith('.fail.cpp')
# If this is a compile (failure) test, build it and check for failure.
if expected_compile_fail:
cmd = [self.cxx_under_test, '-c',
'-o', '/dev/null', source_path] + self.cpp_flags
out, err, exitCode = self.execute_command(cmd)
if exitCode == 1:
return lit.Test.PASS, ""
else:
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\nExpected compilation to fail!"
return lit.Test.FAIL, report
else:
exec_file = tempfile.NamedTemporaryFile(suffix="exe", delete=False)
exec_path = exec_file.name
exec_file.close()
try:
compile_cmd = [self.cxx_under_test, '-o', exec_path,
source_path] + self.cpp_flags + self.ld_flags
cmd = compile_cmd
out, err, exitCode = self.execute_command(cmd)
if exitCode != 0:
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
cmd = [exec_path]
out, err, exitCode = self.execute_command(cmd)
if exitCode != 0:
report = """Compiled With: %s\n""" % ' '.join(["'%s'" % a
for a in compile_cmd])
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\nCompiled test failed unexpectedly!"
return lit.Test.FAIL, report
finally:
try:
os.remove(exec_path)
except:
pass
return lit.Test.PASS, ""
# name: The name of this test suite.
config.name = 'libc++'
# suffixes: A list of file extensions to treat as test files.
config.suffixes = ['.cpp']
# test_source_root: The root path where tests are located.
config.test_source_root = os.path.dirname(__file__)
# FIXME: Would be nice to Use -stdlib=libc++ option with Clang's that accept it.
cxx_under_test = lit.params.get('cxx_under_test', None)
if cxx_under_test is None:
cxx_under_test = getattr(config, 'cxx_under_test', None)
if cxx_under_test is None:
lit.fatal('must specify user parameter cxx_under_test '
'(e.g., --param=cxx_under_test=clang++)')
include_paths = []
library_paths = []
libcxx_src_root = getattr(config, 'libcxx_src_root', None)
if libcxx_src_root is not None:
include_paths += ['-I' + libcxx_src_root + '/include']
else:
include_paths += ['-I/usr/include/c++/v1']
libcxx_obj_root = getattr(config, 'libcxx_obj_root', None)
if libcxx_obj_root is not None:
library_paths += ['-L' + libcxx_obj_root + '/lib']
else:
libcxx_obj_root = "/usr"
# Configure extra compiler flags.
compile_flags = []
if getattr(config, 'cxx_has_stdcxx0x_flag', False):
compile_flags += ['-std=c++0x']
# Configure extra libraries.
libraries = []
if sys.platform == 'darwin':
libraries += ['-lSystem']
if sys.platform == 'linux2':
libraries += ['-lgcc_eh', '-lsupc++', '-lc', '-lm', '-lrt', '-lgcc_s']
libraries += ['-Wl,-R', libcxx_obj_root + '/lib']
config.test_format = LibcxxTestFormat(cxx_under_test,
cpp_flags = ['-nostdinc++'] + compile_flags + include_paths,
ld_flags = ['-nodefaultlibs'] + library_paths + ['-lc++'] + libraries)
config.target_triple = None
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