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 export tc_name=$hdw_tc_name
  46
  47 # lets see what root is:
  48 root=""
  49 if [ "$hdw_crossbuild" != "0" -o "$stage" -lt "2" ] ; then
  50         # check for properly configured build directory
  51         if [ -z "$hdw_build_dir" ] ; then
  52                 echo "please set hdw_build_dir in ./Config!"
  53                 exit 1
  54         elif [ ! -d $hdw_build_dir ] ; then
  55                 echo "please set _existing_ hdw_build_dir in ./Config"
  56                 exit 1
  57         else
  58                 echo "hdw_build_dir variable set to $hdw_build_dir"
  59                 root="$hdw_build_dir"
  60         fi
  61 fi
  62
  63 # setting up general environment, now that we know $root
  64 set +h
  65 umask 022
  66 export LC_ALL=POSIX
  67 if [ "$stage" -lt "2" -a "$hdw_crossbuild" = "0" ] ; then
  68         export PATH="/${tc_name}/bin:/${tc_name}/sbin:$PATH"
  69 elif [ "$hdw_crossbuild" != "0" ] ; then
  70         export PATH="$root/${tc_name}/bin:$root/${tc_name}/sbin:$PATH"
  71 fi
  72
  73 # let's do optimization and care for crossbuilds
  74 #
  75 # as gnu autoconf terminology has been confusing me again and again,
  76 # there are a few comments following ;)
  77 #
  78 # ref: gcc docs - hardware models and configurations
  79 #      @ http://gcc.gnu.org/onlinedocs/
  80 #
  81
  82 # --build: the system the actual executable is created on. uname will tell us.
  83 #          you may set hdw_real_build, or
  84 #          you may fake uname output using fake_utsname kernel module!
  85 if [ -n "`uname --version | grep sh-utils`" ] ; then
  86         hdw_arch_build="`uname -m -p | tr " " -`-linux-gnu"
  87 else
  88         hdw_arch_build="`uname -m`-unknown-linux-gnu"
  89 fi
  90 [ -n "$hdw_real_build" ] && hdw_arch_build="${hdw_real_build}-unknown-linux-gnu"
  91
  92 # --target: the system for which the executable is going to produce code.
  93 case "$hdw_arch" in
  94         ia32)   if [ -z "$hdw_arch_opt" ] ; then
  95                         hdw_arch_target="i386-pc-linux-gnu"
  96                 else
  97                         hdw_arch_target="${hdw_arch_opt}-pc-linux-gnu"
  98                         hdw_cflags="-march=${hdw_arch_opt}"
  99                 fi
 100                 hdw_arch_build=${hdw_arch_build//unknown/pc} ;;
 101         sparc*) if [ -z "$hdw_arch_opt" ] ; then
 102                         hdw_arch_target="$hdw_arch-unknown-linux-gnu"
 103                 else
 104                         hdw_arch_target="$hdw_arch-unknown-linux-gnu"
 105                         hdw_cflags="-march={hdw_arch_opt}"
 106                 fi ;;
 107         ppc)
 108                 hdw_arch_target="powerpc-unknown-linux-gnu"
 109                 if [ -z "$hdw_arch_opt" ] ; then
 110                         hdw_cflags="-mcpu=common"
 111                 else
 112                         hdw_cflags="-mcpu=${hdw_arch_opt}"
 113                 fi
 114                 hdw_arch_build=${hdw_arch_build//ppc/powerpc} ;;
 115         ppc64)
 116                 hdw_arch_target="powerpc64-unknown-linux-gnu"
 117                 if [ -z "$hdw_arch_opt" ] ; then
 118                         hdw_cflags="-mcpu=common"
 119                 else
 120                         hdw_cflags="-mcpu=${hdw_arch_opt}"
 121                 fi
 122                 hdw_arch_build=${hdw_arch_build//ppc64/powerpc64} ;;
 123         mips)   hdw_arch_target="mips-unknown-linux-gnu"
 124                 if [ -z "$hdw_arch_opt" ] ; then
 125                         echo "info: no optimization set"
 126                 else
 127                         hdw_cflags="-march=${hdw_arch_opt}"
 128                 fi ;;
 129         *)      echo "$hdw_arch_target not supported yet"
 130                 echo "please choose a valid optimization and build platform."
 131                 exit 1 ;;
 132 esac
 133
 134 # --host: system where the created executable runs on.
 135 hdw_arch_host=${hdw_arch_build}
 136 [ "$stage" != "0" -a "$hdw_crossbuild" = "0" ] && \
 137         hdw_arch_host=${hdw_arch_target}
 138
 139 # -O flag
 140 # optimization only at stages >= 1
 141 if [ -n "$hdw_opt" -a "$stage" != "0" ] ; then
 142         hdw_cflags="-O${hdw_opt} $hdw_cflags"
 143 else
 144         unset hdw_cflags
 145 fi
 146
 147 # build tools to use
 148 hdw_arch_prefix=""
 149 [ "$stage" != "0" ] && hdw_arch_prefix="$hdw_arch_target-"
 150
 151 # print decissions for debugging ...
 152 echo "root variable set to '$root'"
 153 echo "hdw_arch_target variable set to $hdw_arch_target"
 154 echo "hdw_arch_build variable set to $hdw_arch_build"
 155 echo "hdw_arch_host variable set to $hdw_arch_host"
 156 echo "hdw_arch_prefix variable set to '$hdw_arch_prefix'"
 157 echo "hdw_cflags variable set to '$hdw_cflags'"
 158 echo "hdw_tc_name set to '$hdw_tc_name'"
 159
 160 # lets see what we are going to build
 161 if [ -z $hdw_target ] ; then
 162         echo "please set hdw_target in ./Config!"
 163         exit 1
 164 elif [ ! -d ./targets/$hdw_target ] ; then
 165         echo "please set _existing_ hdw_target in ./Config!"
 166         exit 1
 167 else
 168         echo "hdw_target variable set to $hdw_target"
 169 fi
 170