scripts/gcc-version.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # gcc-version [-p] gcc-command
   5 #
   6 # Prints the gcc version of `gcc-command' in a canonical 4-digit form
   7 # such as `0295' for gcc-2.95, `0303' for gcc-3.3, etc.
   8 #
   9 # With the -p option, prints the patchlevel as well, for example `029503' for
  10 # gcc-2.95.3, `030301' for gcc-3.3.1, 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$0 <gcc-command>\n"
  23         exit 1
  24 fi
  25
  26 MAJOR=$(echo __GNUC__ | $compiler -E -x c - | tail -n 1)
  27 MINOR=$(echo __GNUC_MINOR__ | $compiler -E -x c - | tail -n 1)
  28 if [ "x$with_patchlevel" != "x" ] ; then
  29         PATCHLEVEL=$(echo __GNUC_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