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|
--!The Automatic Cross-platform Build Tool
--
-- XMake is free software; you can redistribute it and/or modify
-- it under the terms of the GNU Lesser General Public License as published by
-- the Free Software Foundation; either version 2.1 of the License, or
-- (at your option) any later version.
--
-- XMake is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Lesser General Public License for more details.
--
-- You should have received a copy of the GNU Lesser General Public License
-- along with XMake;
-- If not, see <a href="http://www.gnu.org/licenses/"> http://www.gnu.org/licenses/</a>
--
-- Copyright (C) 2009 - 2015, ruki All rights reserved.
--
-- @author ruki
-- @file linker.lua
--
-- define module: linker
local linker = linker or {}
-- load modules
local utils = require("base/utils")
local string = require("base/string")
local config = require("base/config")
-- map gcc flags to the given linker flags
function linker._mapflags(self, flags)
-- check
assert(self and flags);
-- need not map flags? return it directly
if not self.mapflag then
return flags
end
-- the configure
local configs = self._CONFIGS
assert(configs)
-- map flags
local flags_mapped = {}
for _, flag in pairs(flags) do
-- map it
local flag_mapped = self._mapflag(configs, flag)
if flag_mapped then
table.insert(flags_mapped, flag_mapped)
end
end
-- ok?
return flags_mapped
end
-- make the command
function linker._make(self, target, objfiles, targetfile)
-- check
assert(self and self._make and target)
-- the configure
local configs = self._CONFIGS
assert(configs)
-- the target kind
local kind = target.kind or ""
-- the flag name
local flag_name = nil
if kind == "binary" then flag_name = "ldflags"
elseif kind == "static" then flag_name = "arflags"
elseif kind == "shared" then flag_name = "shflags"
else
-- error
utils.error("unknown type for linker: %s", kind)
return
end
-- get the common flags from the current linker
local flags_common = configs[flag_name] or ""
-- get the target flags from the current project
local flags_target = table.concat(linker._mapflags(self, utils.wrap(target[flag_name])), " ")
assert(flags_target)
-- get the linkdirs flags from the current project
if self._make_linkdir then
local linkdirs = utils.wrap(target.linkdirs)
for _, linkdir in ipairs(linkdirs) do
flags_target = flags_target:append(self._make_linkdir(configs, linkdir), " ")
end
end
-- get the links flags from the current project
if self._make_link then
local links = utils.wrap(target.links)
for _, link in ipairs(links) do
flags_target = flags_target:append(self._make_link(configs, link), " ")
end
end
-- get the config flags
local flags_config = table.concat(linker._mapflags(self, utils.wrap(config.get(flag_name))), " ")
assert(flags_config)
-- make the flags string
local flags = ""
flags = flags:append(flags_common, " ")
flags = flags:append(flags_target, " ")
flags = flags:append(flags_config, " ")
flags = flags:trim()
-- make it
return self._make(configs, table.concat(objfiles, " "), targetfile, flags)
end
-- load the given linker
function linker.load(name)
-- check
assert(name and type(name) == "string")
-- gcc?
local module = nil
if name:find("gcc", 1, true) then module = "gcc"
-- clang?
elseif name:find("clang", 1, true) then module = "clang"
-- ar?
elseif name:find("ar", 1, true) then module = "ar"
-- cl.exe?
elseif name:find("link.exe", 1, true) then module = "msvc"
-- unknown?
else
-- error
utils.error("unknown linker: %s", name)
return nil
end
-- load the given linker
local l = require("linker/_" .. module)
if not l then
return nil
end
-- the linker has been loaded? return it directly
if l._CONFIGS then
return l
end
-- make the linker configure
l._CONFIGS = {}
local configs = l._CONFIGS
-- init the linker name
configs.name = name
-- init the linker configure
l._init(configs)
-- init interfaces
l["make"] = linker._make
-- ok?
return l
end
-- return module: linker
return linker
|
