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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, TBOOX Open Source Group.
--
-- @author ruki
-- @file find_package.lua
--
-- imports
import("core.base.option")
import("core.project.target")
import("lib.detect.find_tool")
-- find package
function _find_package(cmake, name, opt)
-- get work directory
local workdir = os.tmpfile() .. ".dir"
os.tryrm(workdir)
os.mkdir(workdir)
io.writefile(path.join(workdir, "test.cpp"), "")
-- generate CMakeLists.txt
local cmakefile = io.open(path.join(workdir, "CMakeLists.txt"), "w")
if cmake.version then
cmakefile:print("cmake_minimum_required(VERSION %s)", cmake.version)
end
cmakefile:print("project(find_package)")
-- e.g. OpenCV 4.1.1, Boost COMPONENTS regex system
local requirestr = name
if opt.required_version then
requirestr = requirestr .. " " .. opt.required_version
end
if opt.components then
requirestr = requirestr .. " COMPONENTS"
for _, component in ipairs(opt.components) do
requirestr = requirestr .. " " .. component
end
end
if opt.moduledirs then
for _, moduledir in ipairs(opt.moduledirs) do
cmakefile:print("add_cmake_modules(%s)", moduledir)
end
end
-- e.g. set(Boost_USE_STATIC_LIB ON)
if opt.presets then
for k, v in pairs(opt.presets) do
if type(v) == "boolean" then
cmakefile:print("set(%s %s)", k, v and "ON" or "OFF")
else
cmakefile:print("set(%s %s)", k, tostring(v))
end
end
end
cmakefile:print("find_package(%s REQUIRED)", requirestr)
cmakefile:print("if(%s_FOUND)", name)
cmakefile:print(" add_executable(%s test.cpp)", name)
cmakefile:print(" target_include_directories(%s PRIVATE ${%s_INCLUDE_DIR} ${%s_INCLUDE_DIRS})",
name, name, name)
cmakefile:print(" target_include_directories(%s PRIVATE ${%s_INCLUDE_DIR} ${%s_INCLUDE_DIRS})",
name, name:upper(), name:upper())
cmakefile:print(" target_include_directories(%s PRIVATE ${%s_CXX_INCLUDE_DIRS})",
name, name)
cmakefile:print(" target_link_libraries(%s ${%s_LIBRARY} ${%s_LIBRARIES} ${%s_LIBS})",
name, name, name, name)
cmakefile:print(" target_link_libraries(%s ${%s_LIBRARY} ${%s_LIBRARIES} ${%s_LIBS})",
name, name:upper(), name:upper(), name:upper())
cmakefile:print("endif(%s_FOUND)", name)
cmakefile:close()
-- run cmake
try {function() return os.vrunv(cmake.program, {workdir}, {curdir = workdir, envs = opt.envs}) end}
-- pares defines and includedirs for macosx/linux
local links
local linkdirs
local libfiles
local defines
local includedirs
local flagsfile = path.join(workdir, "CMakeFiles", name .. ".dir", "flags.make")
if os.isfile(flagsfile) then
local flagsdata = io.readfile(flagsfile)
if flagsdata then
if option.get("diagnosis") then
vprint(flagsdata)
end
for _, line in ipairs(flagsdata:split("\n", {plain = true})) do
if line:find("CXX_INCLUDES =", 1, true) then
local has_include = false
local flags = os.argv(line:split("=", {plain = true})[2]:trim())
for _, flag in ipairs(flags) do
if has_include or (flag:startswith("-I") and #flag > 2) then
local includedir = has_include and flag or flag:sub(3)
if includedir and os.isdir(includedir) then
includedirs = includedirs or {}
table.insert(includedirs, includedir)
end
has_include = false
elseif flag == "-isystem" or flag == "-I" then
has_include = true
end
end
elseif line:find("CXX_DEFINES =", 1, true) then
local flags = os.argv(line:split("=", {plain = true})[2]:trim())
for _, flag in ipairs(flags) do
if flag:startswith("-D") and #flag > 2 then
local define = flag:sub(3)
if define then
defines = defines or {}
table.insert(defines, define)
end
end
end
end
end
end
end
-- parse links and linkdirs for macosx/linux
local linkfile = path.join(workdir, "CMakeFiles", name .. ".dir", "link.txt")
if os.isfile(linkfile) then
local linkdata = io.readfile(linkfile)
if linkdata then
if option.get("diagnosis") then
vprint(linkdata)
end
for _, line in ipairs(os.argv(linkdata)) do
local is_library = false
for _, suffix in ipairs({".so", ".dylib", ".dylib", ".tbd", ".lib"}) do
if line:find(suffix, 1, true) then
is_library = true
break
end
end
if is_library then
-- strip library version suffix, e.g. libxxx.so.1.1 -> libxxx.so
if line:find(".so", 1, true) then
line = line:gsub("lib(.-)%.so%..+$", "lib%1.so")
end
-- get libfiles
if os.isfile(line) then
libfiles = libfiles or {}
table.insert(libfiles, line)
end
-- get links and linkdirs
local linkdir = path.directory(line)
if linkdir ~= "." then
linkdirs = linkdirs or {}
table.insert(linkdirs, linkdir)
end
local link = target.linkname(path.filename(line))
if link then
links = links or {}
table.insert(links, link)
end
end
end
end
end
-- pares includedirs and links/linkdirs for windows
local vcprojfile = path.join(workdir, name .. ".vcxproj")
if os.isfile(vcprojfile) then
local vcprojdata = io.readfile(vcprojfile)
if vcprojdata then
for _, line in ipairs(vcprojdata:split("\n", {plain = true})) do
local values = line:match("<AdditionalIncludeDirectories>(.+);%%%(AdditionalIncludeDirectories%)</AdditionalIncludeDirectories>")
if values then
includedirs = includedirs or {}
table.join2(includedirs, path.splitenv(values))
end
values = line:match("<AdditionalDependencies>(.+)</AdditionalDependencies>")
if not values then
-- we need also parse libraries from here
-- https://github.com/xmake-io/xmake/issues/1822
values = line:match("<ImportLibrary>(.+)</ImportLibrary>")
end
if values then
for _, library in ipairs(path.splitenv(values)) do
-- get libfiles
if os.isfile(library) then
libfiles = libfiles or {}
table.insert(libfiles, library)
end
-- get links and linkdirs
local linkdir = path.directory(library)
if linkdir ~= "." then
linkdirs = linkdirs or {}
table.insert(linkdirs, linkdir)
local link = target.linkname(path.filename(library))
if link then
links = links or {}
table.insert(links, link)
end
end
end
end
end
end
end
-- remove work directory
os.tryrm(workdir)
-- get results
if links or includedirs then
local results = {}
results.links = table.reverse_unique(links)
results.linkdirs = table.unique(linkdirs)
results.defines = table.unique(defines)
results.libfiles = table.unique(libfiles)
results.includedirs = table.unique(includedirs)
return results
end
end
-- find package using the cmake package manager
--
-- e.g.
--
-- find_package("cmake::ZLIB")
-- find_package("cmake::OpenCV", {required_version = "4.1.1"})
-- find_package("cmake::Boost", {components = {"regex", "system"}, presets = {Boost_USE_STATIC_LIB = true}})
-- find_package("cmake::Foo", {moduledirs = "xxx"})
--
-- @param name the package name
-- @param opt the options, e.g. {verbose = true, required_version = "1.0",
-- components = {"regex", "system"},
-- moduledirs = "xxx",
-- presets = {Boost_USE_STATIC_LIB = true},
-- envs = {CMAKE_PREFIX_PATH = "xxx"})
--
function main(name, opt)
opt = opt or {}
local cmake = find_tool("cmake", {version = true})
if not cmake then
return
end
return _find_package(cmake, name, opt)
end
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