/*
 * BuildFlags.h
 *
 * This source file is part of the FoundationDB open source project
 *
 * Copyright 2013-2020 Apple Inc. and the FoundationDB project authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef FDBCLIENT_BUILDFLAGS_H
#define FDBCLIENT_BUILDFLAGS_H

#include <string>

#include "fdbclient/JSONDoc.h"

#ifdef __GLIBC__
#define C_VERSION_MAJOR __GLIBC__
#define C_VERSION_MINOR __GLIBC_MINOR__
#else
#define C_VERSION_MAJOR 0
#define C_VERSION_MINOR 0
#endif

const char* kDate = __DATE__;
const char* kTime = __TIME__;

// FDB info.
const std::string kGitHash = "@CURRENT_GIT_VERSION_WNL@";
const std::string kFdbVersion = "@FDB_VERSION@";

// System architecture.
const std::string kArch = "@CMAKE_SYSTEM@";
// ID of compiler used for build, ie "Clang", "GNU", etc...
const std::string kCompiler = "@CMAKE_CXX_COMPILER_ID@";

// Library versions.
const std::string kBoostVersion = BOOST_LIB_VERSION;

// Build info and flags.
const std::string kCMakeVersion = "@CMAKE_VERSION@";
const std::string kCCacheEnabled = "@USE_CCACHE@";

// GNU C library major and minor versions.
constexpr int kCVersionMajor = C_VERSION_MAJOR;
constexpr int kCVersionMinor = C_VERSION_MINOR;

// C++ standard. Possible values are 201402L, 201703L, etc...
constexpr int kCppStandard = __cplusplus;

// Returns a JSON string with information about how the binary was built.
std::string jsonBuildInformation() {
	json_spirit::mValue json;	
	JSONDoc doc(json);

	doc.create("build_date") = kDate;
	doc.create("build_time") = kTime;

	doc.create("git_hash") = kGitHash;
	doc.create("fdb_version") = kFdbVersion;

	doc.create("arch") = kArch;
	doc.create("compiler") = kCompiler;

	doc.create("boost_version") = kBoostVersion;
	doc.create("cmake_version") = kCMakeVersion;
	doc.create("ccache") = kCCacheEnabled;

	doc.create("glibc_version") = std::to_string(kCVersionMajor) + "." + std::to_string(kCVersionMinor);
	doc.create("cpp_standard") = kCppStandard;

	return json_spirit::write_string(json, json_spirit::pretty_print) + "\n";
}

#endif