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import lit.formats
import sys
import os
config.name = "libFuzzer" + config.name_suffix
config.test_format = lit.formats.ShTest(True)
config.suffixes = ['.test']
config.test_source_root = os.path.dirname(__file__)
# Choose between lit's internal shell pipeline runner and a real shell. If
# LIT_USE_INTERNAL_SHELL is in the environment, we use that as an override.
use_lit_shell = os.environ.get("LIT_USE_INTERNAL_SHELL")
if use_lit_shell:
# 0 is external, "" is default, and everything else is internal.
execute_external = (use_lit_shell == "0")
else:
# Otherwise we default to internal on Windows and external elsewhere, as
# bash on Windows is usually very slow.
execute_external = (not sys.platform in ['win32'])
# testFormat: The test format to use to interpret tests.
#
# For now we require '&&' between commands, until they get globally killed and
# the test runner updated.
config.test_format = lit.formats.ShTest(execute_external)
# LeakSanitizer is not supported on OSX or Windows right now.
if (sys.platform.startswith('darwin') or
sys.platform.startswith('freebsd') or
sys.platform.startswith('netbsd') or
sys.platform.startswith('win')):
lit_config.note('lsan feature unavailable')
else:
lit_config.note('lsan feature available')
config.available_features.add('lsan')
# MemorySanitizer is not supported on OSX or Windows right now
if sys.platform.startswith('darwin') or sys.platform.startswith('win'):
lit_config.note('msan feature unavailable')
assert 'msan' not in config.available_features
else:
lit_config.note('msan feature available')
config.available_features.add('msan')
if sys.platform.startswith('win') or sys.platform.startswith('cygwin'):
config.available_features.add('windows')
if sys.platform.startswith('darwin'):
config.available_features.add('darwin')
if sys.platform.startswith('linux'):
# Note the value of ``sys.platform`` is not consistent
# between python 2 and 3, hence the use of ``.startswith()``.
lit_config.note('linux feature available')
config.available_features.add('linux')
else:
lit_config.note('linux feature unavailable')
config.substitutions.append(('%build_dir', config.cmake_binary_dir))
libfuzzer_src_root = os.path.join(config.compiler_rt_src_root, "lib", "fuzzer")
config.substitutions.append(('%libfuzzer_src', libfuzzer_src_root))
def generate_compiler_cmd(is_cpp=True, fuzzer_enabled=True, msan_enabled=False):
compiler_cmd = config.clang
extra_cmd = config.target_flags
if config.clang and config.stdlib == 'libc++':
link_cmd = '-stdlib=libc++ -Wl,-rpath=%s' % config.runtime_library_dir
elif config.clang and config.stdlib == 'static-libc++':
link_cmd = '-stdlib=libc++ -lc++abi -static-libstdc++ -Wl,-rpath=%s' % (
config.runtime_library_dir)
elif any(x in config.target_triple for x in ('darwin', 'freebsd')):
link_cmd = '-lc++'
elif 'windows-msvc' in config.target_triple:
link_cmd = ''
else:
link_cmd = '-lstdc++'
if is_cpp and 'windows-msvc' in config.target_triple:
std_cmd = '--driver-mode=cl'
elif is_cpp:
std_cmd = '--driver-mode=g++ -std=c++11'
else:
std_cmd = ''
if msan_enabled:
sanitizers = ['memory']
else:
sanitizers = ['address']
if fuzzer_enabled:
sanitizers.append('fuzzer')
sanitizers_cmd = ('-fsanitize=%s' % ','.join(sanitizers))
return " ".join([
compiler_cmd,
std_cmd,
link_cmd,
"-O2 -gline-tables-only",
sanitizers_cmd,
"-I%s" % libfuzzer_src_root,
extra_cmd
])
config.substitutions.append(('%cpp_compiler',
generate_compiler_cmd(is_cpp=True, fuzzer_enabled=True)
))
config.substitutions.append(('%c_compiler',
generate_compiler_cmd(is_cpp=False, fuzzer_enabled=True)
))
config.substitutions.append(('%no_fuzzer_cpp_compiler',
generate_compiler_cmd(is_cpp=True, fuzzer_enabled=False)
))
config.substitutions.append(('%no_fuzzer_c_compiler',
generate_compiler_cmd(is_cpp=False, fuzzer_enabled=False)
))
config.substitutions.append(('%msan_compiler',
generate_compiler_cmd(is_cpp=True, fuzzer_enabled=True, msan_enabled=True)
))
if config.host_os == 'Darwin':
if config.target_arch in ["x86_64", "x86_64h"]:
config.parallelism_group = "darwin-64bit-sanitizer"
elif config.apple_platform != "osx" and not config.apple_platform.endswith("sim"):
config.parallelism_group = "darwin-ios-device-sanitizer"
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