scripts/rustc-llvm-version.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Usage: $ ./rustc-llvm-version.sh rustc
   5 #
   6 # Print the LLVM version that the Rust compiler uses in a 6 digit form.
   7
   8 # Convert the version string x.y.z to a canonical up-to-6-digits form.
   9 get_canonical_version()
  10 {
  11         IFS=.
  12         set -- $1
  13         echo $((10000 * $1 + 100 * $2 + $3))
  14 }
  15
  16 if output=$("$@" --version --verbose 2>/dev/null | grep -E 'LLVM.*[0-9]+\.[0-9]+\.[0-9]+'); then
  17         set -- $output
  18         get_canonical_version $3
  19 else
  20         echo 0
  21         exit 1
  22 fi