scripts/clang-version.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # clang-version [-p] clang-command
   5 #
   6 # Prints the compiler version of `clang-command' in a canonical 4-digit form
   7 # such as `0500' for clang-5.0 etc.
   8 #
   9 # With the -p option, prints the patchlevel as well, for example `050001' for
  10 # clang-5.0.1 etc.
  11 #
  12
  13 if [ "$1" = "-p" ] ; then
  14         with_patchlevel=1;
  15         shift;
  16 fi
  17
  18 compiler="$*"
  19
  20 if [ ${#compiler} -eq 0 ]; then
  21         echo "Error: No compiler specified."
  22         printf "Usage:\n\t$0 <clang-command>\n"
  23         exit 1
  24 fi
  25
  26 MAJOR=$(echo __clang_major__ | $compiler -E -x c - | tail -n 1)
  27 MINOR=$(echo __clang_minor__ | $compiler -E -x c - | tail -n 1)
  28 if [ "x$with_patchlevel" != "x" ] ; then
  29         PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1)
  30         printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
  31 else
  32         printf "%02d%02d\\n" $MAJOR $MINOR
  33 fi