compiler-wrapper: set -frandom-seed="$*" for gcc - #4718
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To make builds deterministic with GCC, use `-frandom-seed` with the value set to all command line arguments. Signed-off-by: Harmen Stoppels <me@harmenstoppels.nl>
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-frandom-seed=$* for gcc
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-frandom-seed=$* for gcc-frandom-seed="$*" for gcc
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Regarding binutils, we can assume it's configured with The only non-determinism can come from |
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Converted to draft cause I've submitted this to |
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Combined with #4829 to avoid double full rebuild. |
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To make builds deterministic with GCC, use
-frandom-seedwith thevalue set to all command line arguments. GCC uses the CRC checksum of
this string to initialize its random number generator.
LLVM is deterministic by default.
One concern could be "Argument list too long", but I think this one extra
flag is typically smaller than all the
-I,-L,-Wl,flags we inject.