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--!A cross-platform build utility based on Lua
--
-- 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.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file find_zlib.lua
--
-- imports
import("lib.detect.find_path")
import("lib.detect.find_library")
import("package.manager.find_package")
-- 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 paths
local paths = {"$(reg HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath)",
"$(env PROGRAMFILES)/GnuWin32",
"$(env PROGRAMFILES)/zlib"}
-- find library
local result = {links = {}, linkdirs = {}, includedirs = {}}
local linkinfo = find_library("zlib", paths, {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", paths, {suffixes = "include"})
if includedir then
-- save include directory
table.insert(result.includedirs, includedir)
-- get version
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 then
result.version = version
end
end
end
return result
end
-- find it by the builtin script first
local result = opt.find_package("zlib", opt)
if not result then
-- find it from the link name: z
result = find_package("system::z", opt)
end
return result
end
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