scripts/gcc-version.sh

   1 #!/bin/sh
   2 #
   3 # gcc-version [-p] gcc-command
   4 #
   5 # Prints the gcc version of `gcc-command' in a canonical 4-digit form
   6 # such as `0295' for gcc-2.95, `0303' for gcc-3.3, etc.
   7 #
   8 # With the -p option, prints the patchlevel as well, for example `029503' for
   9 # gcc-2.95.3, `030301' for gcc-3.3.1, etc.
  10 #
  11
  12 if [ "$1" = "-p" ] ; then
  13         with_patchlevel=1;
  14         shift;
  15 fi
  16
  17 compiler="$*"
  18
  19 if [ ${#compiler} -eq 0 ]; then
  20         echo "Error: No compiler specified."
  21         printf "Usage:\n\t$0 <gcc-command>\n"
  22         exit 1
  23 fi
  24
  25 MAJOR=$(echo __GNUC__ | $compiler -E -x c - | tail -n 1)
  26 MINOR=$(echo __GNUC_MINOR__ | $compiler -E -x c - | tail -n 1)
  27 if [ "x$with_patchlevel" != "x" ] ; then
  28         PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -x c - | tail -n 1)
  29         printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
  30 else
  31         printf "%02d%02d\\n" $MAJOR $MINOR
  32 fi