#!/bin/sh

set -e

echo '---------------------------------------------------------------------'
echo 'SoftEther VPN for Unix'
echo
echo 'Copyright (c) all contributors on SoftEther VPN project in GitHub.'
echo 'Copyright (c) Daiyuu Nobori, SoftEther Project at University of Tsukuba, and SoftEther Corporation.'
echo
echo 'Licensed under the Apache License, Version 2.0 (the License).'
echo
echo 'Read and understand README, LICENSE and WARNING before use.'
echo '---------------------------------------------------------------------'
echo

echo 'Welcome to the corner-cutting configure script !'
echo

if [ ! -d "build" ]; then
  mkdir build
fi

if [ ! -z ${CMAKE_FLAGS+x} ]; then
	CMAKE_FLAGS="${CMAKE_FLAGS}"
fi

if [ ! -z ${CMAKE_INSTALL_PREFIX+x} ]; then
	CMAKE_FLAGS="-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX} ${CMAKE_FLAGS}"
fi

if [ -z ${OPENSSL_ROOT_DIR} ]; then
	unameOut="$(uname -s)"
	if [ "$unameOut" = "Darwin" ]; then
		# Homebrew's prefix differs by architecture: /opt/homebrew on Apple
		# Silicon, /usr/local on Intel. Ask brew rather than hardcoding one.
		if command -v brew > /dev/null 2>&1; then
			OPENSSL_ROOT_DIR="$(brew --prefix openssl@3 2>/dev/null || brew --prefix openssl 2>/dev/null)"
		fi
		if [ -z "${OPENSSL_ROOT_DIR}" ]; then
			OPENSSL_ROOT_DIR="/usr/local/opt/openssl/"
		fi
		echo "Environment variable OPENSSL_ROOT_DIR not set, using ${OPENSSL_ROOT_DIR}"
		export OPENSSL_ROOT_DIR
	fi
fi

if [ ! -z ${CPACK_GENERATOR+x} ]; then
	echo "CPACK_GENERATOR is set, CPack will generate ${CPACK_GENERATOR} packages."
	CMAKE_FLAGS="-DCPACK_GENERATOR=${CPACK_GENERATOR} ${CMAKE_FLAGS}"
elif [ "$(uname -s)" = "Darwin" ]; then
	echo "Darwin detected, CPack will generate TGZ archives."
	CMAKE_FLAGS="-DCPACK_GENERATOR='TGZ' ${CMAKE_FLAGS}"
elif [ -x "$(command -v rpm)" ]; then
	echo "'rpm' executable found, CPack will generate RPM packages."
	CMAKE_FLAGS="-DCPACK_GENERATOR='RPM' ${CMAKE_FLAGS}"
else
	echo "'rpm' executable not found, CPack will generate DEB packages."
	CMAKE_FLAGS="-DCPACK_GENERATOR='DEB' ${CMAKE_FLAGS}"
fi

echo ""

(cd build && cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo ${CMAKE_FLAGS} .. || exit 1)


echo ""

echo "The Makefile is generated. Run 'make -C build' to build SoftEther VPN."