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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) 2015-2020, TBOOX Open Source Group.
+--
+-- @author ruki
+-- @file ld.lua
+--
+
+-- imports
+import("core.base.option")
+import("core.project.config")
+import("core.project.project")
+import("core.language.language")
+
+-- init it
+function init(self)
+
+ -- init shflags
+ self:set("shflags", "-shared")
+
+ -- add -fPIC for shared
+ if not is_plat("windows", "mingw") then
+ self:add("shflags", "-fPIC")
+ self:add("shared.cxflags", "-fPIC")
+ end
+end
+
+-- make the strip flag
+function nf_strip(self, level)
+ local maps =
+ {
+ debug = "-S"
+ , all = "-s"
+ }
+
+ local plat = config.plat()
+ if plat == "macosx" or plat == "iphoneos" then
+ maps.all = "-Wl,-x"
+ maps.debug = "-Wl,-S"
+ end
+ return maps[level]
+end
+
+-- make the link flag
+function nf_link(self, lib)
+ return "-l" .. lib
+end
+
+-- make the syslink flag
+function nf_syslink(self, lib)
+ return nf_link(self, lib)
+end
+
+-- make the linkdir flag
+function nf_linkdir(self, dir)
+ return "-L" .. os.args(path.translate(dir))
+end
+
+-- make the link arguments list
+function linkargv(self, objectfiles, targetkind, targetfile, flags, opt)
+
+ -- init arguments
+ local argv = table.join("-o", targetfile, objectfiles, flags)
+
+ -- too long arguments for windows?
+ if is_host("windows") then
+ opt = opt or {}
+ local args = os.args(argv, {escape = true})
+ if #args > 1024 and not opt.rawargs then
+ local argsfile = os.tmpfile(args) .. ".args.txt"
+ io.writefile(argsfile, args)
+ argv = {"@" .. argsfile}
+ end
+ end
+ return self:program(), argv
+end
+
+-- link the target file
+function link(self, objectfiles, targetkind, targetfile, flags)
+
+ -- ensure the target directory
+ os.mkdir(path.directory(targetfile))
+
+ -- link it
+ os.runv(linkargv(self, objectfiles, targetkind, targetfile, flags))
+end
+