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Cheaper and faster prehash generation mechanism #45

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Cheaper and faster prehash generation mechanism #45

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13 changes: 11 additions & 2 deletions c
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Original file line number Diff line number Diff line change
Expand Up @@ -124,11 +124,20 @@ fi
comp+=("$CPPFLAGS")

# hash all of our data
prehash="$CC ${comp[@]}" # compiler + flags and files
prehash=
argsprehash="$CC"
for f in "${comp[@]}"; do
[ -f "$f" ] && prehash+="$f $(cpp "$f" 2>&1)"
if [ -f "$f" ]; then
prehash+=$($hash_func < "$f" | cut -d' ' -f1 2>&1)
else
# Skip any empty args resulting from extra spaces
[ "$f" == "" ] && continue
argsprehash+="$f"
fi
done

prehash+=$($hash_func <<< "$argsprehash" | cut -d' ' -f1 2>&1)

# hash everything into one unique identifier, for caching purposes
id="c$("$hash_func" <<< "$prehash" | cut -d' ' -f1)"
tmpdir="$tmproot/$id.src"
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