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scons: Enable building with the gcc/clang Address Sanitizer

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Allow the user to easily build gem5 with the Address Sanitizer, part
of both gcc and clang these days.
This commit is contained in:
Andreas Hansson 2016-02-17 03:56:20 -05:00
parent 0d50979888
commit a34ff350da
2 changed files with 15 additions and 2 deletions
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3
SConstruct
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@ -194,6 +194,8 @@ AddLocalOption('--without-tcmalloc', dest='without_tcmalloc',
help='Disable linking against tcmalloc')
AddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true',
help='Build with Undefined Behavior Sanitizer if available')
AddLocalOption('--with-asan', dest='with_asan', action='store_true',
help='Build with Address Sanitizer if available')
termcap = get_termcap(GetOption('use_colors'))
@ -209,6 +211,7 @@ use_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH',
'PYTHONPATH', 'RANLIB', 'SWIG', 'TERM' ])
use_prefixes = [
"ASAN_", # address sanitizer symbolizer path and settings
"CCACHE_", # ccache (caching compiler wrapper) configuration
"CCC_", # clang static analyzer configuration
"DISTCC_", # distcc (distributed compiler wrapper) configuration

14
src/SConscript
View file

@ -1083,17 +1083,27 @@ def makeEnv(env, label, objsfx, strip = False, **kwargs):
new_env.Append(CCFLAGS='-fsanitize=undefined')
new_env.Append(LINKFLAGS='-fsanitize=undefined')
# The address sanitizer is available for gcc >= 4.8
if GetOption('with_asan') and \
compareVersions(env['GCC_VERSION'], '4.8') >= 0:
new_env.Append(CCFLAGS='-fsanitize=address')
new_env.Append(LINKFLAGS='-fsanitize=address')
if env['CLANG']:
swig_env.Append(CCFLAGS=['-Wno-sometimes-uninitialized',
'-Wno-deprecated-register',
'-Wno-tautological-compare'])
# All supported clang versions have support for UBSan, so if
# asked to use it, append the compiler and linker flags.
# We require clang >= 3.1, so there is no need to check any
# versions here.
if GetOption('with_ubsan'):
new_env.Append(CCFLAGS='-fsanitize=undefined')
new_env.Append(LINKFLAGS='-fsanitize=undefined')
if GetOption('with_asan'):
new_env.Append(CCFLAGS='-fsanitize=address')
new_env.Append(LINKFLAGS='-fsanitize=address')
werror_env = new_env.Clone()
# Treat warnings as errors but white list some warnings that we
# want to allow (e.g., deprecation warnings).