configure

   1 #!/bin/bash
   2 #
   3 # ./configure -- A very simple configure script for v86d.
   4 #
   5 # (c) 2006-2007, Michal Januszewski <spock@gentoo.org>
   6 #
   7 # In time, it will be replaced by a fully-fledged version.
   8 #
   9
  10 copt_klibc=CONFIG_KLIBC
  11 copt_klibc_desc="Link statically against klibc"
  12 copt_klibc_type="bool"
  13 copt_klibc_def=n
  14
  15 copt_debug=CONFIG_DEBUG
  16 copt_debug_desc="Use additional debugging features"
  17 copt_debug_type="bool"
  18 copt_debug_def=n
  19
  20 copt_x86emu=CONFIG_X86EMU
  21 copt_x86emu_desc="Use x86emu for BIOS calls"
  22 copt_x86emu_type="bool"
  23 copt_x86emu_def=auto
  24 copt_x86emu_test()
  25 {
  26         local m=`uname -m`
  27         if [ "$m" = "i686" -o "$m" = "i586" -o "$m" = "i486" -o "$m" = "i386" ]; then
  28                 echo "n";
  29         elif [ "$m" = "x86_64" ]; then
  30                 echo "y";
  31         else
  32                 echo "It looks like your architecture '$m' isn't supported by this version of v86d." >&2
  33                 exit 1
  34         fi
  35 }
  36
  37 options=`set | grep '^copt_' | sed -re 's/copt_([^_=]+)[_=].*/\1/' | uniq`
  38
  39 write_conf()
  40 {
  41         echo -n > config.h
  42
  43         for i in ${options} ; do
  44                 eval vval=\$copt_$i\_val
  45                 eval vtype=\$copt_$i\_type
  46                 eval vname=\$copt_$i
  47
  48                 if [[ "$vtype" == "bool" ]]; then
  49                         if [[ "$vval" == "y" ]]; then
  50                                 echo "#define $vname" >> config.h
  51                         else
  52                                 echo "#undef $vname" >> config.h
  53                         fi
  54                 else
  55                         echo "#define $vname \"$vval\"" >> config.h
  56                 fi
  57         done
  58
  59         echo "config.h successfully created."
  60         echo "You can run \`make\` now."
  61 }
  62
  63 usage()
  64 {
  65         cat <<EOTB
  66 v86d configuration script
  67
  68 Please use the following options to configure v86d.
  69 EOTB
  70     printf "  %-20s %-s\n\n" --default "Use a default v86d configuration"
  71
  72         for i in ${options} ; do
  73                 eval vtype=\$copt_$i\_type
  74                 eval vdesc=\$copt_$i\_desc
  75                 eval vdef=\$copt_$i\_def
  76
  77                 if [[ ${vtype} == "string" ]]; then
  78                         with="--with-${i}=VAL"
  79                 else
  80                         with="--with-${i}"
  81                 fi
  82
  83                 vdesc="${vdesc} (default: $vdef)"
  84
  85                 printf "  %-20s %-s\n" ${with} "${vdesc}"
  86         done
  87 }
  88
  89 if [[ $# == 0 ]]; then
  90         usage
  91         exit
  92 fi
  93
  94 for i in ${options} ; do
  95         eval copt_${i}_val="\$copt_${i}_def"
  96         if [ -n "$(set | grep copt_${i}_test)" ]; then
  97                 eval copt_${i}_val="\$(copt_${i}_test)"
  98         fi
  99 done
 100
 101 for i in $* ; do
 102         if [[ "$i" == "--help" ]]; then
 103                 usage
 104                 exit
 105         elif [[ "$i" == "--default" ]]; then
 106                 write_conf
 107                 exit
 108         fi
 109
 110         j=${i//--with-}
 111         if [[ "$j" != "$i" ]]; then
 112                 with=y
 113         else
 114                 j=${i//--without-}
 115                 if [[ "$j" != "$i" ]]; then
 116                         with=n
 117                 else
 118                         usage
 119                         exit
 120                 fi
 121         fi
 122
 123         optval=${j#*=}
 124         optname=${j%=*}
 125
 126         eval t=\$copt_${optname}_val
 127         if [[ "x$t" == "x" ]]; then
 128                 echo "Unrecognized setting ${optname}." 1>&2
 129                 exit
 130         fi
 131
 132         eval vtype=\$copt_${optname}_type
 133         if [[ "$vtype" == "bool" ]]; then
 134                 eval copt_${optname}_val=${with}
 135         else
 136                 eval copt_${optname}_val=${optval}
 137         fi
 138 done
 139
 140 write_conf
 141 exit
 142