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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 pkg_config.lua
--
-- imports
import("lib.detect.find_library")
import("detect.tools.find_brew")
import("detect.tools.find_pkg_config")
-- get package info
--
-- @param name the package name
-- @param opt the argument options, {version = true, configdirs = {"/xxxx/pkgconfig/"}}
--
-- @return {links = {"ssl", "crypto", "z"}, linkdirs = {""}, includedirs = {""}, version = ""}
--
-- @code
--
-- local pkginfo = pkg_config.info("openssl")
--
-- @endcode
--
function info(name, opt)
-- attempt to add search pathes from pkg-config
local pkg_config = find_pkg_config()
if not pkg_config then
return
end
-- init options and cache
opt = opt or {}
_g._INFO = _g._INFO or {}
-- get it from cache first
local result = _g._INFO[name]
if result then
return result
end
-- get pkg-config path from brew
local brew = find_brew()
local brewprefix = nil
local configdirs = opt.configdirs or {}
if brew then
brewprefix = try { function () return os.iorunv(brew, {"--prefix", name}) end }
if brewprefix then
brewprefix = brewprefix:trim()
local configdir = path.join(brewprefix, "lib", "pkgconfig")
if os.isdir(configdir) then
table.insert(configdirs, configdir)
end
end
end
-- add PKG_CONFIG_PATH
local configdirs_old = nil
if #configdirs > 0 then
configdirs_old = os.getenv("PKG_CONFIG_PATH")
os.addenv("PKG_CONFIG_PATH", unpack(configdirs))
end
-- get libs and cflags
local flags = try { function () return os.iorunv(pkg_config, {"--libs", "--cflags", name}) end }
if flags then
-- init result
result = {}
for _, flag in ipairs(flags:split('%s*')) do
-- get links
local link = flag:match("%-l(.*)")
if link then
result.links = result.links or {}
table.insert(result.links, link)
end
-- get linkdirs
local linkdirs = nil
local linkdir = flag:match("%-L(.*)")
if linkdir and os.isdir(linkdir) then
result.linkdirs = result.linkdirs or {}
table.insert(result.linkdirs, linkdir)
end
-- get includedirs
local includedirs = nil
local includedir = flag:match("%-I(.*)")
if includedir and os.isdir(includedir) then
result.includedirs = result.includedirs or {}
table.insert(result.includedirs, includedir)
end
end
elseif brewprefix then
result = {linkdirs = {path.join(brewprefix, "lib")}, includedirs = {path.join(brewprefix, "include")}}
end
-- get version
if opt.version then
-- get version
local version = try { function() return os.iorunv(pkg_config, {"--modversion", name}) end }
if version then
result = result or {}
result.version = version:trim()
end
end
-- restore PKG_CONFIG_PATH
if configdirs_old then
os.setenv("PKG_CONFIG_PATH", configdirs_old)
end
-- save result to cache
_g._INFO[name] = result
-- ok?
return result
end
-- find package
--
-- @param name the package name
-- @param opt the argument options, {plat = "", arch = "", version = "1.0.1", links = {...}}
--
-- @return {links = {"ssl", "crypto", "z"}, linkdirs = {""}, includedirs = {""}}
--
-- @code
--
-- local pkginfo = pkg_config.find("openssl")
--
-- @endcode
--
function find(name, opt)
-- get package info
local pkginfo = info(name, opt)
if not pkginfo then
return
end
-- match version?
opt = opt or {}
if opt.version and pkginfo.version ~= opt.version then
return
end
-- get links
local links = pkginfo.links
if not links or #links == 0 then
links = opt.links
end
-- find library
local result = nil
for _, link in ipairs(table.wrap(links)) do
local libinfo = find_library(link, pkginfo.linkdirs)
if libinfo then
result = result or {}
result.links = table.join(result.links or {}, libinfo.link)
result.linkdirs = table.join(result.linkdirs or {}, libinfo.linkdir)
end
end
-- found?
if result and result.links then
result.linkdirs = table.unique(result.linkdirs)
result.includedirs = table.join(result.includedirs or {}, pkginfo.includedirs)
end
-- ok?
return result
end
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