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Rework GNU -m flags#1269

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madsmtm wants to merge 6 commits intorust-lang:mainrust-lang/cc-rs:mainfrom madsmtm:mflagsmadsmtm/cc-rs:mflagsCopy head branch name to clipboard

+693-195

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Commits on Nov 4, 2024

• generator: Parse rustc --print cfg

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• Fall back to rustc's default value for crt-static/static_flag

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• Avoid -m32/-mx32/-m64 flags on Clang

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• Refactor GNU flag determination into TargetInfo::gnu_arch_flags

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• Add relevant -m32/-m64 on PowerPC and SPARC

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• Consistently pass -mfloat-abi=... to GCC

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