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Diffstat (limited to 'SConstruct')
| -rwxr-xr-x | SConstruct | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/SConstruct b/SConstruct index f6960c31037..0a7fc9cab94 100755 --- a/SConstruct +++ b/SConstruct @@ -2480,6 +2480,15 @@ for suboption in get_option('experimental-runtime-hardening'): elif suboption.startswith('+'): selected_experimental_runtime_hardenings.add(suboption[1:]) +# Disable floating-point contractions such as forming of fused multiply-add operations. +if env.ToolchainIs('clang', 'gcc'): + env.Append(CCFLAGS=["-ffp-contract=off"]) +else: + # msvc defaults to /fp:precise. Visual Studio 2022 does not emit floating-point contractions + # with /fp:precise, but previous versions can. Disable contractions altogether by using + # /fp:strict. + env.Append(CCFLAGS=["/fp:strict"]) + if env.TargetOSIs('linux'): env.Append(LIBS=["m"]) if not env.TargetOSIs('android'): |