Bash file naming in makefile

somnium · 10-18-2005, 01:32 PM

Hey guys,
I'm in need of a little help pertaining to bash scripts in my make file. Basically, what I would liek to do is have a script that increments and appended number everytime I compile the program, kind of an easy way to keep progressive builds in order.

kind of like binary-0.0.1, binary-0.0.2 and so forth.

Right now I just have the name of the binary into a variable that make uses in a cc line. I'm guessing I need a script that would read the variable string, find the last build number and increment it and use that to create the binary.

The other option is that I'm going about this the wrong way and there's an easier and/or better way of doing this that I'm just not seeing.

Either way, that's for the help

Dark_Helmet · 10-18-2005, 02:03 PM

This is probably overkill, but I was bored... Just incorporate it into the Makefile using system command/calls. Use the "-d" to display it (in the compile command for instance) and the "-i" to increment. You may need to futz with the addition section to match how you want your revisioning system to work. At worst, it would require using cut...

Code:

#!/bin/bash

DATA_FILE="./.counter_data"

DisplayUsage ()
{
cat << EOF
Usage: $( basename $0 ) ( -d | -i )
   -d   Display the stored counter value
   -i   Increment the stored counter value
EOF
}

if [ $# -ne 1 ] ; then
  DisplayUsage
  exit 1
fi

case ${1} in
  -i)
    if [ ! -f ${DATA_FILE} ] ; then
      echo 0 > ${DATA_FILE}
    fi

    counter_value=$( cat ${DATA_FILE} )
    let counter_value=counter_value+1
    echo ${counter_value} > ${DATA_FILE}
  ;;

  -d)
    if [ ! -r ${DATA_FILE} ] ; then
      echo "Unable to read data file (${DATA_FILE})"
    else
      cat ${DATA_FILE}
    fi
  ;;

  *)
    echo "ERROR: unrecognized option: ${1}"
    DisplayUsage
    exit 1
  ;;
esac

exit 0