#!/usr/bin/env bash

# Builds the passed Go package or command for every supported operating system and architecture into directories named for such and logs.

godistbuild () {
  declare relpath="${1-$PWD}"
  declare dir="$PWD/dist"
  declare log="$dir/build.log"
  rm -rf "$dir"
  mkdir "$dir"
  cd "$dir"
  >| $log # truncate
  for dist in $(go tool dist list); do
    [[ ! -d $dist ]] && mkdir -p $dist
    declare os=${dist%/*}
    declare arch=${dist#*/}
    echo "BUILDING: $os-$arch" | tee -a $log
    cd $dist
    GOOS=$os GOARCH=$arch go build $relpath  >> $log 2>&1
    echo >> $log
    cd - &>/dev/null
  done
}

godistbuild $*