configure

   1 #! /bin/sh
   2 #
   3 # Prex configuration script
   4 #
   5
   6 [ ! -d conf ] && { echo "configure: must be run from the top source level"; exit 1; }
   7
   8 while [ $# != 0 ]
   9 do
  10         case $1 in
  11         --*=*)
  12                 option=`expr "x$1" : 'x\([^=]*\)='`
  13                 optarg=`expr "x$1" : 'x[^=]*=\(.*\)'`
  14                 ;;
  15         --*)
  16                 option=$1
  17                 ;;
  18         *)
  19                 echo "configure: unrecognized option $1"
  20                 exit 1
  21                 ;;
  22         esac
  23
  24         case $option in
  25         --help)
  26                 echo "Usage: configure [options]"
  27                 echo " General options:"
  28                 echo "  --target=TARGET         target system"
  29                 echo "  --cross-compile=PREFIX  prefix for cros-compile tools"
  30                 echo "  --no-debug              disable all debug code"
  31                 echo " Supported targets:"
  32                 echo "  i386-pc i386-nommu arm-gba"
  33                 exit 0
  34                 ;;
  35         --target)
  36                 target=$optarg ;;
  37         --cross-compile)
  38                 cross=$optarg ;;
  39         --no-debug)
  40                 nodebug=1 ;;
  41         *)
  42                 echo "configure: unrecognized option $1"
  43                 exit 1
  44                 ;;
  45         esac
  46         shift
  47 done
  48
  49 default_target=0
  50 if [ "x$target" = x ] ; then
  51         target="i386-pc"
  52         default_target=1
  53 fi
  54
  55 srcdir=`pwd`
  56
  57 arch=`expr "x$target" : 'x\([^=]*\)-'`
  58 platform=`expr "x$target" : 'x[^=]*-\(.*\)'`
  59
  60 host_name=`uname -s`
  61 case $host_name in
  62         CYGWIN*)
  63                 if [ x$cross = x ]; then
  64                         case $arch in
  65                         i386)    cross="i386-elf-" ;;
  66                         arm)     cross="arm-elf-" ;;
  67                         powerpc) cross="powerpc-eabi-" ;;
  68                         sh)      cross="sh-elf-" ;;
  69                         mips)    cross="mips-elf-" ;;
  70                         esac
  71                 fi
  72                 ;;
  73 esac
  74
  75 CONFIG_IN=$srcdir/conf/config.$arch-$platform
  76 CONFIG_MK=$srcdir/conf/config.mk
  77 CONFIG_H=$srcdir/conf/config.h
  78
  79 [ ! -f $CONFIG_IN ] && { echo "configure: can not find conf/config.$arch-$platform"; exit 1; }
  80
  81 echo "Processing configuration file..."
  82
  83 echo "#" > $CONFIG_MK
  84 echo "# Automatically generated from $CONFIG_IN." >> $CONFIG_MK
  85 echo "# Don't edit!" >> $CONFIG_MK
  86 echo "#" >> $CONFIG_MK
  87
  88 echo "/*" > $CONFIG_H
  89 echo " * Automatically generated from $CONFIG_IN." >> $CONFIG_H
  90 echo " * Don't edit!" >> $CONFIG_H
  91 echo " */" >> $CONFIG_H
  92
  93 echo "PREX_SRC=$srcdir" >> $CONFIG_MK
  94 echo "PREX_ARCH=$arch" >> $CONFIG_MK
  95 echo "PREX_PLATFORM=$platform" >> $CONFIG_MK
  96 [ "x$cross" != x ] && echo "CROSS_COMPILE=$cross" >> $CONFIG_MK
  97 [ "x$nodebug" != x ] && echo "NDEBUG=1" >> $CONFIG_MK
  98
  99 echo "" >> $CONFIG_MK
 100
 101 while read line
 102 do
 103         word=`expr "x$line" : 'x\(CONFIG_[A-Za-z0-9_]*=[^       ]*\)'`
 104         param=`expr "x$word" : 'x\([^=]*\)='`
 105         value=`expr "x$word" : 'x[^=]*=\(.*\)'`
 106         if [ -n "$param" ] ; then
 107                 echo "$word"
 108                 echo "export $word" >> $CONFIG_MK
 109                 if [ "$value" = "n" ] ; then
 110                         echo "#undef $param" >> $CONFIG_H
 111                 else
 112                         echo "#define $param $value" >> $CONFIG_H
 113                 fi
 114         fi
 115 done < $CONFIG_IN
 116
 117 if [ $default_target = 1 ]; then
 118         echo
 119         echo "Warning: '--target' option was not specified."
 120         echo "The target system was set to 'i386-pc' as default."
 121         echo
 122 fi
 123
 124 exit 0