McGill COMP 206 - Assignment 2 Question 3

compile

#!/bin/bash

INSTRUCTIONS="""
USAGE
 $ compile -o filename [--clean] [--backup] [--archive] [--help] cfilenames
 
WHERE
 filename: name of the outputed executable
 cfilenames: list of c source files to be compiled together
 
OPTIONS
 --help: display this message
 --clean: deletes all the .o files before compiling
 --backup: copies all .c and .h files to backup directory before compilation
 --archive: TARs contents of source dir, moves archive to backup
"""

instruct() {
  echo "$INSTRUCTIONS"
  exit 1
}

if test $# -eq 0; then
  instruct
fi

CLEAN=false
BACKUP=false
ARCHIVE=false
FILENAME=""
CFILENAMES=""

while test $# -gt 0
do
  case "$1" in
    '-h'|'--help')
      instruct
      ;;
    '--clean')
      CLEAN=true
      shift 1
      ;;
    '--backup')
      BACKUP=true
      shift 1
      ;;
    '--archive')
      ARCHIVE=true
      shift 1
      ;;
    '-o')
      FILENAME="$2"
      shift 2
      ;;
    *)
      if test -r $1; then
        CFILENAMES="$CFILENAMES $1"
        shift 1
      else
        echo "ERROR: \"$1\" not a valid option"
        instruct
      fi
  esac
done

if test -z "$FILENAME"; then
  echo "ERROR: no filename provided"
  instruct
elif test -z "$CFILENAMES"; then
  echo "ERROR: no cfilenames provided"
  instruct
fi

if $CLEAN; then 
  rm -f *.o 
fi

if $BACKUP; then
  mkdir -p backup
  cp -f *.[ch] backup
fi

if $ARCHIVE; then
  mkdir -p backup
  tar -czf archive.$(date +%Y%m%d-%H%M%S).tgz *
  mv *.tgz backup
fi

gcc -c $CFILENAMES && gcc -o $FILENAME *.o