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--!A cross-platform build utility based on Lua
--
-- Licensed to the Apache Software Foundation (ASF) under one
-- or more contributor license agreements. See the NOTICE file
-- distributed with this work for additional information
-- regarding copyright ownership. The ASF licenses this file
-- to you 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.
--
-- Copyright (C) 2015 - 2018, TBOOX Open Source Group.
--
-- @author ruki
-- @file find_zlib.lua
--
-- imports
import("lib.detect.find_path")
import("lib.detect.find_library")
-- find zlib
--
-- @param opt the package options. e.g. see the options of find_package()
--
-- @return see the return value of find_package()
--
function main(opt)
-- for windows platform
--
-- http://gnuwin32.sourceforge.net/packages/zlib.html
--
if opt.plat == "windows" then
-- init search pathes
local pathes = {"$(reg HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath)",
"$(env PROGRAMFILES)/GnuWin32",
"$(env PROGRAMFILES)/zlib"}
-- find library
local result = {links = {}, linkdirs = {}, includedirs = {}}
local linkinfo = find_library("zlib", pathes, {suffixes = "lib"})
if not linkinfo then
return
end
-- save link and directory
table.insert(result.links, linkinfo.link)
table.insert(result.linkdirs, linkinfo.linkdir)
-- find include
local includedir = find_path("zlib.h", pathes, {suffixes = "include"})
if includedir then
-- save include directory
table.insert(result.includedirs, includedir)
-- match version
if opt.version then
local zlib_h = io.readfile(path.join(includedir, "zlib.h"))
if zlib_h then
local version = zlib_h:match("#define ZLIB_VERSION \"(%d+%.?%d+%.?%d+)\"")
if version ~= opt.version then
return
end
end
end
end
-- ok
return result
end
end
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