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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_package.lua
--
-- imports
import("lib.detect.find_file")
import("lib.detect.find_tool")
import("core.base.option")
import("core.project.config")
import("core.project.target")
import("detect.sdks.find_vcpkgdir")
import("package.manager.vcpkg.configurations")
import("package.manager.pkgconfig.find_package", {alias = "find_package_from_pkgconfig"})
-- we iterate over each pkgconfig file to extract the required data
function _find_package_from_pkgconfig(pkgconfig_files, opt)
opt = opt or {}
local foundpc = false
local result = {includedirs = {}, linkdirs = {}, links = {}}
for _, pkgconfig_file in ipairs(pkgconfig_files) do
local pkgconfig_dir = path.join(opt.installdir, path.directory(pkgconfig_file))
local pkgconfig_name = path.basename(pkgconfig_file)
local pcresult = find_package_from_pkgconfig(pkgconfig_name, {configdirs = pkgconfig_dir, linkdirs = opt.linkdirs})
-- the pkgconfig file has been parse successfully
if pcresult then
for _, includedir in ipairs(pcresult.includedirs) do
table.insert(result.includedirs, includedir)
end
for _, linkdir in ipairs(pcresult.linkdirs) do
table.insert(result.linkdirs, linkdir)
end
for _, link in ipairs(pcresult.links) do
table.insert(result.links, link)
end
-- version should be the same if a pacman package contains multiples .pc
result.version = pcresult.version
foundpc = true
end
end
if foundpc == true then
result.includedirs = table.unique(result.includedirs)
result.linkdirs = table.unique(result.linkdirs)
result.links = table.reverse_unique(result.links)
return result
end
end
function _find_package(vcpkgdir, name, opt)
-- get configs
local configs = opt.configs or {}
-- fix name, e.g. ffmpeg[x264] as ffmpeg
-- @see https://github.com/xmake-io/xmake/issues/925
name = name:gsub("%[.-%]", "")
-- init triplet
local arch = opt.arch
local plat = opt.plat
local mode = opt.mode
plat = configurations.plat(plat)
arch = configurations.arch(arch)
local triplet = configurations.triplet(configs, plat, arch)
-- get the vcpkg info directories
local infodirs = {}
if opt.installdir then
table.join2(infodirs, path.join(opt.installdir, "vcpkg_installed", "vcpkg", "info"))
end
table.join2(infodirs, path.join(vcpkgdir, "installed", "vcpkg", "info"))
-- find the package info file, e.g. zlib_1.2.11-3_x86-windows[-static].list
local infofile = find_file(format("%s_*_%s.list", name, triplet), infodirs)
if not infofile then
return
end
local installdir = path.directory(path.directory(path.directory(infofile)))
-- save includedirs, linkdirs and links
local result = nil
local pkgconfig_files = {}
local info = io.readfile(infofile)
if info then
for _, line in ipairs(info:split('\n')) do
line = line:trim()
if plat == "windows" then
line = line:lower()
end
-- get pkgconfig files
if line:find(triplet .. (mode == "debug" and "/debug" or "") .. "/lib/pkgconfig/", 1, true) and line:endswith(".pc") then
table.insert(pkgconfig_files, line)
end
-- get includedirs
if line:endswith("/include/") then
result = result or {}
result.includedirs = result.includedirs or {}
table.insert(result.includedirs, path.join(installdir, line))
end
-- get linkdirs and links
if (plat == "windows" and line:endswith(".lib")) or line:endswith(".a") or line:endswith(".so") then
if line:find(triplet .. (mode == "debug" and "/debug" or "") .. "/lib/", 1, true) then
result = result or {}
result.links = result.links or {}
result.linkdirs = result.linkdirs or {}
result.libfiles = result.libfiles or {}
table.insert(result.linkdirs, path.join(installdir, path.directory(line)))
table.insert(result.links, target.linkname(path.filename(line), {plat = plat}))
table.insert(result.libfiles, path.join(installdir, path.directory(line), path.filename(line)))
end
end
-- add shared library directory (/bin/) to linkdirs for running with PATH on windows
if plat == "windows" and line:endswith(".dll") then
if line:find(plat .. (mode == "debug" and "/debug" or "") .. "/bin/", 1, true) then
result = result or {}
result.linkdirs = result.linkdirs or {}
result.libfiles = result.libfiles or {}
table.insert(result.linkdirs, path.join(installdir, path.directory(line)))
table.insert(result.libfiles, path.join(installdir, path.directory(line), path.filename(line)))
end
end
end
end
-- find result from pkgconfig first
if #pkgconfig_files > 0 then
local pkgconfig_result = _find_package_from_pkgconfig(pkgconfig_files, {installdir = installdir, linkdirs = result and result.linkdirs})
if pkgconfig_result then
result = pkgconfig_result
end
end
-- save version
if result then
local infoname = path.basename(infofile)
local prefix = name
-- name maybe contains lua pattern characters, we need escape it. e.g. `-`
prefix = prefix:gsub("([%+%.%-%^%$%(%)%%])", "%%%1")
result.version = infoname:match(prefix .. "_(%d+%.?%d*%.?%d*.-)_" .. arch)
if not result.version then
result.version = infoname:match(prefix .. "_(%d+%.?%d*%.-)_" .. arch)
end
end
-- remove repeat
if result then
if result.linkdirs then
result.linkdirs = table.unique(result.linkdirs)
end
if result.includedirs then
result.includedirs = table.unique(result.includedirs)
end
end
return result
end
-- find package from the vcpkg package manager
--
-- @param name the package name, e.g. zlib, pcre
-- @param opt the options, e.g. {verbose = true)
--
function main(name, opt)
opt = opt or {}
local vcpkgdir = find_vcpkgdir()
if not vcpkgdir then
-- we need show warning if we do not try finding package and vcpkg root directory not found.
if not opt.try then
wprint("vcpkg root directory not found, maybe you need set $VCPKG_ROOT!")
end
return
end
-- do find package
return _find_package(vcpkgdir, name, opt)
end
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