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# -*- Python -*-
import os
def get_required_attr(config, attr_name):
attr_value = getattr(config, attr_name, None)
if not attr_value:
lit.fatal("No attribute %r in test configuration! You may need to run "
"tests from your build directory or add this attribute "
"to lit.site.cfg " % attr_name)
return attr_value
# Setup config name.
config.name = 'DataFlowSanitizer'
# Setup source root.
config.test_source_root = os.path.dirname(__file__)
def DisplayNoConfigMessage():
lit.fatal("No site specific configuration available! " +
"Try running your test from the build tree or running " +
"make check-dfsan")
# Figure out LLVM source root.
llvm_src_root = getattr(config, 'llvm_src_root', None)
if llvm_src_root is None:
# We probably haven't loaded the site-specific configuration: the user
# is likely trying to run a test file directly, and the site configuration
# wasn't created by the build system.
dfsan_site_cfg = lit.params.get('dfsan_site_config', None)
if (dfsan_site_cfg) and (os.path.exists(dfsan_site_cfg)):
lit.load_config(config, dfsan_site_cfg)
raise SystemExit
# Try to guess the location of site-specific configuration using llvm-config
# util that can point where the build tree is.
llvm_config = lit.util.which("llvm-config", config.environment["PATH"])
if not llvm_config:
DisplayNoConfigMessage()
# Find out the presumed location of generated site config.
llvm_obj_root = lit.util.capture(["llvm-config", "--obj-root"]).strip()
dfsan_site_cfg = os.path.join(llvm_obj_root, "projects", "compiler-rt",
"lib", "dfsan", "lit_tests", "lit.site.cfg")
if (not dfsan_site_cfg) or (not os.path.exists(dfsan_site_cfg)):
DisplayNoConfigMessage()
lit.load_config(config, dfsan_site_cfg)
raise SystemExit
# Setup default compiler flags used with -fsanitize=dataflow option.
clang_dfsan_cflags = ["-fsanitize=dataflow"]
clang_dfsan_cxxflags = ["-ccc-cxx "] + clang_dfsan_cflags
config.substitutions.append( ("%clang_dfsan ",
" ".join([config.clang] + clang_dfsan_cflags) +
" ") )
config.substitutions.append( ("%clangxx_dfsan ",
" ".join([config.clang] + clang_dfsan_cxxflags) +
" ") )
# Default test suffixes.
config.suffixes = ['.c', '.cc', '.cpp']
# DataFlowSanitizer tests are currently supported on Linux only.
if config.host_os not in ['Linux']:
config.unsupported = True
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