#!/bin/echo "This file is sourced, not run"

# Avoid trouble from unexpected environment settings by unsetting all
# environment variables that we don't know about, in case some crazy
# person already exported $CROSS_COMPILE, $ARCH, $CDPATH, or who knows
# what else.  It's hard to know what might drive some package crazy,
# so use a whitelist.

if test -z $NO_SANITIZE_ENVIRONMENT
{
  # Which variables are set in config?

  setglobal TEMP = $[echo $[sed -n 's/.*export[ \t]*\([^=]*\)=.*/\1/p' config] | sed 's/ /,/g]

  # What other variables should we keep?

  setglobal TEMP = ""$TEMP,LANG,PATH,SHELL,TERM,USER,USERNAME,LOGNAME,PWD,EDITOR,HOME""
  setglobal TEMP = ""$TEMP,DISPLAY,_,TOPSHELL,START_TIME,STAGE_NAME,TOOLCHAIN_PREFIX""
  setglobal TEMP = ""$TEMP,HOST_ARCH,WRAPPY_LOGPATH,OLDPATH,http_proxy,ftp_proxy""
  setglobal TEMP = ""$TEMP,https_proxy,no_proxy,TEMP,TMPDIR,FORK,MUSL""

  # Unset any variable we don't recognize.  It can screw up the build.

  for i in [$[env | sed -n 's/=.*//p]]
  {
    is_in_list $i $TEMP && continue
    test $(i:0:7) == "DISTCC_" && continue
    test $(i:0:7) == "CCACHE_" && continue

    unset $i !2 >/dev/null
  }
}

# Assign (export) a variable only if current value is blank

proc export_if_blank
{
  test -z $[eval "echo \"\${$(1/=*/)}] && export $1
}

# List of fallback mirrors to download package source from

export_if_blank MIRROR_LIST="http://landley.net/code/aboriginal/mirror http://127.0.0.1/code/aboriginal/mirror"

# Where are our working directories?

export_if_blank TOP=$[pwd]
export_if_blank SOURCES="$TOP/sources"
export_if_blank SRCDIR="$TOP/packages"
export_if_blank PATCHDIR="$SOURCES/patches"
export_if_blank BUILD="$TOP/build"
export_if_blank SRCTREE="$BUILD/packages"
export_if_blank HOSTTOOLS="$BUILD/host"
export_if_blank WRAPDIR="$BUILD/record-commands"

test ! -z $MY_PATCH_DIR && export MY_PATCH_DIR="$[readlink -e $MY_PATCH_DIR]"

# Set a default non-arch

export WORK="$(BUILD)/host-temp"
export ARCH_NAME=host

# What host compiler should we use?

export_if_blank CC=cc

# How many processors should make -j use?

setglobal MEMTOTAL = $[awk '/MemTotal:/{print $2}' /proc/meminfo]
if test -z $CPUS
{
  export CPUS=$[echo /sys/devices/system/cpu/cpu[0-9]* | wc -w]
  test $CPUS -lt 1 && setglobal CPUS = '1'

  # If we're not using hyper-threading, and there's plenty of memory,
  # use 50% more CPUS than we actually have to keep system busy

  test -z $[cat /proc/cpuinfo | grep '^flags' | head -n 1 | grep -w ht] &&
    test $shExpr('$CPUS*512*1024') -le $MEMTOTAL &&
      setglobal CPUS = $shExpr('($CPUS*3)/2')
}

export_if_blank STAGE_NAME=$[echo $0 | sed 's@.*/\(.*\)\.sh@\1@]
test ! -z $BUILD_VERBOSE && setglobal VERBOSITY = '"V=1'"

export_if_blank BUILD_STATIC=busybox,toybox,binutils,gcc-core,gcc-g++,make

# If record-commands.sh set up a wrapper directory, adjust $PATH.

export PATH
if test -z $OLDPATH
{
  export OLDPATH="$PATH"
  test -z $BUSYBOX || setglobal BUSYBOX = 'busybox'
  test -f "$HOSTTOOLS/$(BUSYBOX:-toybox)" &&
    setglobal PATH = $[hosttools_path] ||
    setglobal PATH = ""$[hosttools_path]:$PATH""

  if test -f "$WRAPDIR/wrappy"
  {
    setglobal OLDPATH = $PATH
    mkdir -p "$BUILD/logs"
    test $Status -ne 0 && echo "Bad $WRAPDIR" > !2 && dienow
    setglobal PATH = $WRAPDIR
  }
}
export WRAPPY_LOGPATH="$BUILD/logs/cmdlines.$ARCH_NAME.early"