set toolchains

#!/bin/bash

_set_target_toolchain(){
  local target="$1"
  local toolchain_dir="$2"
  local bindir="$2"
  [ -d "$bindir/bin" ] && bindir="$toolchain_dir/bin"
  export PATH=$bindir:$PATH
  unset ADDR2LINE AR AS CXX CC CPP ELFEDIT GXX GCOV GDB GPROF LD LDD NM OBJCOPY OBJDUMP POPULATE RANLIB READELF SIZE STRINGS STRIP
  [ -f "$bindir/$target-addr2line" ] && export ADDR2LINE=$target-addr2line
  [ -f "$bindir/$target-ar" ] && export AR=$target-ar
  [ -f "$bindir/$target-as" ] && export AS=$target-as
  [ -f "$bindir/$target-c++" ] && export CXX=$target-c++
  [ -f "$bindir/$target-gcc" ] && export CC=$target-gcc
  [ -f "$bindir/$target-cpp" ] && export CPP=$target-cpp
  [ -f "$bindir/$target-elfedit" ] && export ELFEDIT=$target-elfedit
  [ -f "$bindir/$target-g++" ] && export GXX=$target-g++
  [ -f "$bindir/$target-gcov" ] && export GCOV=$target-gcov
  [ -f "$bindir/$target-gdb" ] && export GDB=$target-gdb
  [ -f "$bindir/$target-gprof" ] && export GPROF=$target-gprof
  [ -f "$bindir/$target-ld" ] && export LD=$target-ld
  [ -f "$bindir/$target-ldd" ] && export LDD=$target-ldd
  [ -f "$bindir/$target-nm" ] && export NM=$target-nm
  [ -f "$bindir/$target-objcopy" ] && export OBJCOPY=$target-objcopy
  [ -f "$bindir/$target-objdump" ] && export OBJDUMP=$target-objdump
  [ -f "$bindir/$target-populate" ] && export POPULATE=$target-populate
  [ -f "$bindir/$target-ranlib" ] && export RANLIB=$target-ranlib
  [ -f "$bindir/$target-readelf" ] && export READELF=$target-readelf
  [ -f "$bindir/$target-size" ] && export SIZE=$target-size
  [ -f "$bindir/$target-strings" ] && export STRINGS=$target-strings
  [ -f "$bindir/$target-strip" ] && export STRIP=$target-strip
}

toolchain_names=("default" "armv8" "mingw32" "mingw64" "xpc")
toolchain_targets=("" "" "" "x86_64-w64-mingw32" "x86_64-xpc-linux-gnu")
toolchain_dirs=("" "" "" "/src/toolchains/linux/mingw" "/src/toolchains/linux/xpc")

export SYSTOOLCHAIN=${SYSTOOLCHAIN:-"default"}
for ((i=0 ; i<${#toolchain_names[@]}; i++)){
  if [ "${SYSTOOLCHAIN}" == "${toolchain_names[i]}" ]; then
    _set_target_toolchain "${toolchain_targets[i]}" "${toolchain_dirs[i]}"
    break
  fi
}

toolchain(){
  if [ "0" == "$#" ]; then
    echo ""
    echo "Available toolchains: "
    for ((i=0 ; i<${#toolchain_names[@]}; i++)){
      echo "  ${toolchain_names[i]}"
    }
    echo "Current toolchain: $SYSTOOLCHAIN"
    echo ""
    return 0
  fi
  for ((i=0 ; i<${#toolchain_names[@]}; i++)){
    if [ "${1}" == "${toolchain_names[i]}" ]; then
      export SYSTOOLCHAIN="$1"
      exec bash --login
    fi
  }
  echo "Invalid toolchain: $1"
}