configure

   1 #!/bin/bash
   2 #
   3 # ./configure -- A very simple configure script for splashutils.
   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_x86emu=CONFIG_X86EMU
  16 copt_x86emu_desc="Use x86emu for BIOS calls"
  17 copt_x86emu_type="bool"
  18 copt_x86emu_def=auto
  19 copt_x86emu_test()
  20 {
  21         local m=`uname -m`
  22         if [ "$m" = "i686" -o "$m" = "i586" -o "$m" = "i486" -o "$m" = "i386" ]; then
  23                 echo "n";
  24         elif [ "$m" = "x86_64" ]; then
  25                 echo "y";
  26         else
  27                 echo "It looks like your architecture '$m' isn't supported by this version of v86d." >&2
  28                 exit 1
  29         fi
  30 }
  31
  32 options=`set | grep '^copt_' | sed -re 's/copt_([^_=]+)[_=].*/\1/' | uniq`
  33
  34 write_conf()
  35 {
  36         echo -n > config.h
  37
  38         for i in ${options} ; do
  39                 eval vval=\$copt_$i\_val
  40                 eval vtype=\$copt_$i\_type
  41                 eval vname=\$copt_$i
  42
  43                 if [[ "$vtype" == "bool" ]]; then
  44                         if [[ "$vval" == "y" ]]; then
  45                                 echo "#define $vname" >> config.h
  46                         else
  47                                 echo "#undef $vname" >> config.h
  48                         fi
  49                 else
  50                         echo "#define $vname \"$vval\"" >> config.h
  51                 fi
  52         done
  53
  54         echo "config.h successfully created."
  55         echo "You can run \`make\` now."
  56 }
  57
  58 usage()
  59 {
  60         cat <<EOTB
  61 v86d configuration script
  62
  63 Please use the following options to configure v86d.
  64 EOTB
  65     printf "  %-20s %-s\n\n" --default "Use a default v86d configuration"
  66
  67         for i in ${options} ; do
  68                 eval vtype=\$copt_$i\_type
  69                 eval vdesc=\$copt_$i\_desc
  70                 eval vdef=\$copt_$i\_def
  71
  72                 if [[ ${vtype} == "string" ]]; then
  73                         with="--with-${i}=VAL"
  74                 else
  75                         with="--with-${i}"
  76                 fi
  77
  78                 vdesc="${vdesc} (default: $vdef)"
  79
  80                 printf "  %-20s %-s\n" ${with} "${vdesc}"
  81         done
  82 }
  83
  84 if [[ $# == 0 ]]; then
  85         usage
  86         exit
  87 fi
  88
  89 for i in ${options} ; do
  90         eval copt_${i}_val="\$copt_${i}_def"
  91         if [ -n "$(set | grep copt_${i}_test)" ]; then
  92                 eval copt_${i}_val="\$(copt_${i}_test)"
  93         fi
  94 done
  95
  96 for i in $* ; do
  97         if [[ "$i" == "--help" ]]; then
  98                 usage
  99                 exit
 100         elif [[ "$i" == "--default" ]]; then
 101                 write_conf
 102                 exit
 103         fi
 104
 105         j=${i//--with-}
 106         if [[ "$j" != "$i" ]]; then
 107                 with=y
 108         else
 109                 j=${i//--without-}
 110                 if [[ "$j" != "$i" ]]; then
 111                         with=n
 112                 else
 113                         usage
 114                         exit
 115                 fi
 116         fi
 117
 118         optval=${j#*=}
 119         optname=${j%=*}
 120
 121         eval t=\$copt_${optname}_val
 122         if [[ "x$t" == "x" ]]; then
 123                 echo "Unrecognized setting ${optname}." 1>&2
 124                 exit
 125         fi
 126
 127         eval vtype=\$copt_${optname}_type
 128         if [[ "$vtype" == "bool" ]]; then
 129                 eval copt_${optname}_val=${with}
 130         else
 131                 eval copt_${optname}_val=${optval}
 132         fi
 133 done
 134
 135 write_conf
 136 exit
 137