#!/bin/sh
# This file is a part of Julia. License is MIT: https://julialang.org/license

# download mingw-w64 compilers from opensuse build service, usage:
# ./get_toolchain.sh 64
# (or ./get_toolchain.sh 32)
# depends on curl, xmllint, gunzip, sort -V, sha256sum, and p7zip

# Run in top-level Julia directory
cd $[dirname $0]/../..
# Stop on error
set -e
setglobal bits = $1

match $bits {
  with 32
    setglobal host = 'i686-w64-mingw32'
    setglobal exc = 'sjlj'
    
  with 64
    setglobal host = 'x86_64-w64-mingw32'
    setglobal exc = 'seh'
    
  with *
    echo 'error: run script either as `./get_toolchain.sh 32` or `./get_toolchain.sh 64`' > !2
    exit 1
    
}
echo "Downloading $host toolchain, check $PWD/get_toolchain.log for full output"
contrib/windows/winrpm.sh http://download.opensuse.org/repositories/windows:/mingw:/win$bits/openSUSE_Leap_42.2 \
  "mingw$bits-gcc mingw$bits-gcc-c++ mingw$bits-gcc-fortran \
   mingw$bits-libssp0 mingw$bits-libstdc++6 mingw$bits-libgfortran3" > get_toolchain.log

setglobal mingwdir = "usr/$host/sys-root/mingw"
chmod +x $mingwdir/bin/* $mingwdir/$host/bin/* $mingwdir/libexec/gcc/$host/*/*
mkdir -p usr/bin
for i in [gcc_s_$exc-1 ssp-0 stdc++-6 gfortran-3 quadmath-0] {
  cp $mingwdir/bin/lib$i.dll usr/bin
}
$mingwdir/bin/g++ --version
# copy around binutils and make a junction for includes
cp $mingwdir/$host/bin/* $mingwdir/bin
match $[uname] {
  with CYGWIN*
    setglobal mklink = '"cmd /C mklink /J'"
    # treat these like cross-compilers if we're running from cygwin
    for i in [gcc g++ gfortran] {
      mv $mingwdir/bin/$i.exe $mingwdir/bin/$host-$i.exe
    }
    
  with *
    setglobal mklink = '"cmd //C mklink //J'"
    
}
if ! test -e $mingwdir/$host/include {
  $mklink $[cygpath -w $mingwdir/$host/include] $[cygpath -w $mingwdir/include]
}
echo "Toolchain successfully downloaded to $PWD/$mingwdir"
echo "Add toolchain to your path by running \`export PATH=$PWD/$mingwdir/bin:\$PATH\`"