#!/bin/sh
 set -euC
 
 prefix="${1:-"/usr/local"}"
 repo="${2:-"https://github.com/ujjwal96/xwinwrap"}"
 commitish="${3:-"ec32e9b72539de7e1553a4f70345166107b431f7"}"
 
 sudo=
 if [ "$(stat -c '%U' "$prefix")" != "$USER" ]
 then
   sudo=sudo
 fi
 
 tmp_dir="$(mktemp -d)"
 trap 'rm -rf "$tmp_dir"' EXIT INT
 cd "$tmp_dir"
 
 git clone --no-checkout "$repo" '.'
 git checkout "$commitish"
 
 "${CC:-gcc}" 'xwinwrap.c' -O3 -lX11 -lXext -lXrender -o 'xwinwrap'
 $sudo install -D 'xwinwrap' "$prefix/bin/xwinwrap"