scripts/Config

   1 #
   2 # hdw-linux Config script
   3 #
   4 # author: hackbard@hackdaworld.org
   5 #
   6 # script initializing environment
   7 #
   8
   9 stage=""
  10
  11 while [ "$1" ] ; do
  12         case "$1" in
  13                 -stage)         stage="$2"              ; shift 2 ;;
  14                 *)              echo
  15                                 echo "Usage:"
  16                                 echo
  17                                 echo " ./scripts/Config -stage <stagelevel>"
  18                                 echo
  19                                 shift 1 ; exit 1 ;;
  20         esac
  21 done
  22
  23 if [ -z "$stage" ]; then
  24         echo "something went wrong, no stage specified."
  25         exit 1
  26 fi
  27
  28 # execute  Config file & create symlink to doc/README + doc/BUILD
  29 if [ -f ./Config ] ; then
  30         hdw_home_dir=`pwd`
  31         echo "setting hdw_home_dir to $hdw_home_dir"
  32         echo "reading ./Config file"
  33         . ./Config
  34         [ ! -s ./README ] && ln -s ./doc/README .
  35         [ ! -s ./BUILD ] && ln -s ./doc/BUILD .
  36         [ ! -s ./INSTALL ] && ln -s ./doc/INSTALL .
  37         [ ! -s ./License ] && ln -s ./doc/License .
  38 else
  39         echo "./Config file not found. are you in correct directory?"
  40         exit 1
  41 fi
  42
  43 # define the toolchain name, default: "toolchain"
  44 [ -z "$hdw_tc_name" ] && hdw_tc_name="toolchain"
  45
  46 # lets see what root is:
  47 root=""
  48 if [ "$hdw_crossbuild" != "0" -o "$stage" -lt "2" ] ; then
  49         # check for properly configured build directory
  50         if [ -z "$hdw_build_dir" ] ; then
  51                 echo "please set hdw_build_dir in ./Config!"
  52                 exit 1
  53         elif [ ! -d $hdw_build_dir ] ; then
  54                 echo "please set _existing_ hdw_build_dir in ./Config"
  55                 exit 1
  56         else
  57                 echo "hdw_build_dir variable set to $hdw_build_dir"
  58                 root="$hdw_build_dir"
  59         fi
  60 fi
  61
  62 # setting up general environment, now that we know $root
  63 set +h
  64 umask 022
  65 export LC_ALL=POSIX
  66 [ "$stage" -lt "2" -o "$hdw_crossbuild" != "0" ] && \
  67         export PATH="$root/${hdw_tc_name}/bin:$PATH"
  68
  69 # let's do optimization and care for crossbuilds
  70 #
  71 # as gnu autoconf terminology has been confusing me again and again,
  72 # there are a few comments following ;)
  73 #
  74 # ref: gcc docs - hardware models and configurations
  75 #      @ http://gcc.gnu.org/onlinedocs/
  76 #
  77
  78 # --build: the system the actual executable is created on. uname will tell us.
  79 #          you may set hdw_real_build, or
  80 #          you may fake uname output using fake_utsname kernel module!
  81 if [ -n "`uname --version | grep sh-utils`" ] ; then
  82         hdw_arch_build="`uname -m -p | tr " " -`-linux-gnu"
  83 else
  84         hdw_arch_build="`uname -m`-unknown-linux-gnu"
  85 fi
  86 [ -n "$hdw_real_build" ] && hdw_arch_build="${hdw_real_build}-unknown-linux-gnu"
  87
  88 # --target: the system for which the executable is going to produce code.
  89 case "$hdw_arch" in
  90         ia32)   if [ -z "$hdw_arch_opt" ] ; then
  91                         hdw_arch_target="i386-pc-linux-gnu"
  92                 else
  93                         hdw_arch_target="${hdw_arch_opt}-pc-linux-gnu"
  94                         hdw_cflags="-march=${hdw_arch_opt}"
  95                 fi
  96                 hdw_arch_build=${hdw_arch_build//unknown/pc} ;;
  97         sparc*) if [ -z "$hdw_arch_opt" ] ; then
  98                         hdw_arch_target="$hdw_arch-unknown-linux-gnu"
  99                 else
 100                         hdw_arch_target="$hdw_arch-unknown-linux-gnu"
 101                         hdw_cflags="-march={hdw_arch_opt}"
 102                 fi ;;
 103         ppc)
 104                 hdw_arch_target="powerpc-unknown-linux-gnu"
 105                 if [ -z "$hdw_arch_opt" ] ; then
 106                         hdw_cflags="-mcpu=common"
 107                 else
 108                         hdw_cflags="-mcpu=${hdw_arch_opt}"
 109                 fi
 110                 hdw_arch_build=${hdw_arch_build//ppc/powerpc} ;;
 111         ppc64)
 112                 hdw_arch_target="powerpc64-unknown-linux-gnu"
 113                 if [ -z "$hdw_arch_opt" ] ; then
 114                         hdw_cflags="-mcpu=common"
 115                 else
 116                         hdw_cflags="-mcpu=${hdw_arch_opt}"
 117                 fi
 118                 hdw_arch_build=${hdw_arch_build//ppc64/powerpc64} ;;
 119         mips)   hdw_arch_target="mips-unknown-linux-gnu"
 120                 if [ -z "$hdw_arch_opt" ] ; then
 121                         echo "info: no optimization set"
 122                 else
 123                         hdw_cflags="-march=${hdw_arch_opt}"
 124                 fi ;;
 125         *)      echo "$hdw_arch_target not supported yet"
 126                 echo "please choose a valid optimization and build platform."
 127                 exit 1 ;;
 128 esac
 129
 130 # --host: system where the created executable runs on.
 131 hdw_arch_host=${hdw_arch_build}
 132 [ "$stage" != "0" -a "$hdw_crossbuild" = "0" ] && \
 133         hdw_arch_host=${hdw_arch_target}
 134
 135 # -O flag
 136 # optimization only at stages >= 1
 137 if [ -n "$hdw_opt" -a "$stage" != "0" ] ; then
 138         hdw_cflags="-O${hdw_opt} $hdw_cflags"
 139 else
 140         unset hdw_cflags
 141 fi
 142
 143 # build tools to use
 144 hdw_arch_prefix=""
 145 [ "$stage" != "0" ] && hdw_arch_prefix="$hdw_arch_target-"
 146
 147 # print decissions for debugging ...
 148 echo "root variable set to '$root'"
 149 echo "hdw_arch_target variable set to $hdw_arch_target"
 150 echo "hdw_arch_build variable set to $hdw_arch_build"
 151 echo "hdw_arch_host variable set to $hdw_arch_host"
 152 echo "hdw_arch_prefix variable set to '$hdw_arch_prefix'"
 153 echo "hdw_cflags variable set to '$hdw_cflags'"
 154 echo "hdw_tc_name set to '$hdw_tc_name'"
 155
 156 # lets see what we are going to build
 157 if [ -z $hdw_target ] ; then
 158         echo "please set hdw_target in ./Config!"
 159         exit 1
 160 elif [ ! -d ./targets/$hdw_target ] ; then
 161         echo "please set _existing_ hdw_target in ./Config!"
 162         exit 1
 163 else
 164         echo "hdw_target variable set to $hdw_target"
 165 fi
 166