Subversion Repositories usb_fpga_1_2

#!/bin/sh
# Makefile.config -- script for automatic configuration of Makefile variables
# Copyright (C) 2002-2003 Stefan Ziegenbalg

configfile=Makefile.conf

# nice output routines
#    \033          is just ascii ESC
#    \033[<NUM>G   move to column <NUM>
#    \033[1m       switch bold on
#    \033[31m      switch red on
#    \033[32m      switch green on
#    \033[33m      switch yellow on
#    \033[m        switch color/bold off
echo_red () {
    echo -e "\033[31m\033[1m$1\033[m" >&2
}

echo_green () {
    echo -e "\033[32m$1\033[m" >&2
}

echo_yellow () {
    echo -e "\033[33m\033[1m$1\033[m" >&2
}

# read config file 
readconfig () {
    result="-"
    read var par
    while [ "$result" = "-" -a "$var" != "" ]; do
        [ "$var" = "$1" ] && result=$par
        read var par
    done
    echo $result
}
 
# remove temporay files 
rmtmp () {
    rm -f $tmpfile $tmpfile.*
}

# checks coompilinmg + running
# $1 compiler command + flags
# $2 test file (without .pas) 
checkcr () {
    echo "$1 $2" >> $tmpfile.log
    $1 $2 >> $tmpfile.log 2>> $tmpfile.log
    if [ "$?" = "0" ]; then
      echo "./$2" >> $tmpfile.log
      ./$2
    else 
      return 1  
    fi
}

# checks command
findexec () {
    result=""
    for i; do
      if [ "$result" = "" ]; then
        if [ "${i#*/}" = "$i" ]; then 
            which $i >> $tmpfile.log 2>> $tmpfile.log
            [ "$?" = "0" ] && result=$i
        else
            [ -x $i -a ! -d $i ] && result=$i
        fi
      fi        
    done
    echo $result
}


failure () {
    echo -n $failreturn
    exit 1
}    

#####################
##### main part #####
#####################
failreturn=""
case "$1" in
  "pc2") cmd=pc; failreturn="ppc386" ;;
  "install2") cmd=install; failreturn="install" ;;
  "findexec2") cmd=findexec; failreturn=${2%% *} ;;
  *) cmd=$1 ;;
esac

case "$cmd" in
    "findexec")  varname=$cmd_$2 ;;
    "have_unit") varname=have_$3 ;;
    "unit_flags") varname=$3"_flags" ;;
    *) varname=$cmd ;;
esac
tmpfile="conf_$varname"

result="-"
[ -f $configfile -a "$varname" != "" ] && result=`readconfig $varname < $configfile` 

if [ "$result" != "-" ]; then
    echo $result
    exit 0
fi

result=""
rm -f $tmpfile.log
case "$cmd" in
    "pc")
        echo -n "Checking for freepascal compiler (FLAGS=\"$2\"): " >&2
        echo -e "begin\nend." > $tmpfile.pas
        for i in ppc386 fpc pc $3; do
            if [ "$result" = "" ]; then
                if [ "${i#*/}" = "$i" ]; then 
                    which $i >> $tmpfile.log 2>> $tmpfile.log
                    [ "$?" = "0" ] && checkcr "$i $2" $tmpfile && result=$i
                else
                    [ -x $i -a ! -d $i ] && checkcr "$i $2" $tmpfile && result=$i
                fi
            fi
        done       
        if [ "$result" != "" ]; then
            echo_green "$result"
            rmtmp
        else 
          echo_red "not found"
          failure
        fi
    ;;  
    "install")
        echo -n "Checking for install command: " >&2
        result=`findexec install ginstall $2`
        if [ "$result" != "" ]; then
            echo_green "$result"
            rmtmp
        else 
          echo_red "not found"
          failure
        fi
    ;;
    "have_unit" | "unit_flags" )
        echo -n "Checking for $3 unit: " >&2
        echo -e "uses $3;\nbegin\nend." > $tmpfile.pas
        for i in $4 " "; do
          if [ "$result" = "" ]; then
            if [ "$i" = " " ]; then
              checkcr "$2" $tmpfile && result=$i
            else   
              [ -f $i/$3.ppu ] && checkcr "$2 -Fu$i" $tmpfile && result=$i
            fi
          fi       
        done
        if [ "$result" != "" ]; then 
          if [ "$result" = " " ]; then
            echo_green "available"
          else
            echo_green "$result"
            result="-Fu$result"
          fi    
          if [ "$1" = "have_unit" ]; then
            echo "$3""_flags $result" >> $configfile 
            result=1
          else 
            echo "have_$3 1" >> $configfile 
          fi
          rmtmp
        else 
          echo_yellow "not available"
          echo "$3""_flags " >> $configfile 
          if [ "$1" = "have_unit" ]; then
            result=0
          else 
            echo "have_$3 0" >> $configfile
            failure       
          fi
        fi
    ;;  
    "optalign")
        echo -n "Checking for -Oa flag: " >&2
        echo -e "begin\nend." > $tmpfile.pas
        checkcr "$2 -Oa" $tmpfile
        if [ "$?" = "0" ]; then 
          echo_green "works"
          result=1
          rmtmp
        else 
          echo_yellow "failed"
          result=0
        fi
    ;;  
    "findexec")
        echo -n "Checking for $2: " >&2
        result=`findexec $3`
        if [ "$result" != "" ]; then
            echo_green "$result"
            rmtmp
        else 
          echo_red "not found"
          failure
        fi
    ;;
    *)
        echo "$0 -- script for automatic configuration of Makefile variables"
        echo
        echo
        echo "    !! Run make to build the project or run ./update to update the Makefile (e.g. after changing sources)!!"
        echo
        echo
        echo "Usage: $0 <variable> [options]"
        echo ""
        echo "variables:"
        echo "  pc [compiler flags [additional compilers]]"
        echo "    checks for freepascal compiler, returns \"\" on failure"
        echo ""
        echo "  pc2 [compiler flags [additional compilers]]"
        echo "    as above, but ppc386 is returned on failure"
        echo ""
        echo "  install [additonal commands]"
        echo "    checks for install command, returns \"\" on failure"
        echo ""
        echo "  install2 [additonal commands]"
        echo "    as above, but install is returned on failure"
        echo ""
        echo "  have_unit <compiler command> <unit name> [<alternate locations>]"
        echo "    checks whether <unit list> is available; returns 0 on failure, 1 on success; unit list must be coma separated"
        echo ""
        echo "  unit_flags <compiler command> <name of unit package> <unit list> [<alternate locations>]"
        echo "    as above, but returns \"-ul<location>\" if unit found in [<alternate locations>]"
        echo ""
        echo "  optalign <compiler command>"
        echo "    checks whether -Oa flag works"
        echo ""
        echo "  findexec <name> <list variants>"
        echo "    checks for existing executable in <list variants>"
        echo ""
        echo "  findexec2 <name> <list variants>"
        echo "    as above, but first variant is returned on failure"
        echo ""
        exit 1
    ;;
esac    

[ "$result" != "" -a "$varname" != "" ] && echo "$varname $result" >> $configfile 
echo $result