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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Usage: $ ./rustc-llvm-version.sh rustc
#
# Print the LLVM version that the Rust compiler uses in a 6 digit form.
# Convert the version string x.y.z to a canonical up-to-6-digits form.
get_canonical_version()
{
IFS=.
set -- $1
echo $((10000 * $1 + 100 * $2 + $3))
}
if output=$("$@" --version --verbose 2>/dev/null | grep -E 'LLVM.*[0-9]+\.[0-9]+\.[0-9]+'); then
set -- $output
get_canonical_version $3
else
echo 0
exit 1
fi
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