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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 - 2019, TBOOX Open Source Group.
--
-- @author luzhlon
-- @file compile_flags.lua
--
-- imports
import("core.tool.compiler")
import("core.project.project")
import("core.language.language")
-- make the object
function _make_object(target, sourcefile, objectfile)
-- get the source file kind
local sourcekind = language.sourcekind_of(sourcefile)
-- make the object for the *.o/obj? ignore it directly
if sourcekind == "obj" or sourcekind == "lib" then
return
end
-- get compile arguments
local arguments = compiler.compflags(sourcefile, {target = target})
for i, flag in ipairs(arguments) do
-- only export the -I*/-D* flags
if not g_flags[flag] and string.find(flag, '^-[ID]') then
g_flags[flag] = true
table.insert(g_flags, flag)
end
end
-- clear first line marks
_g.firstline = false
end
-- make each objects
function _make_each_objects(target, sourcekind, sourcebatch)
for index, objectfile in ipairs(sourcebatch.objectfiles) do
_make_object(target, sourcebatch.sourcefiles[index], objectfile)
end
end
-- make single object
function _make_single_object(target, sourcekind, sourcebatch)
-- not supported now, ignore it directly
for _, sourcefile in ipairs(table.wrap(sourcebatch.sourcefiles)) do
cprint("${bright yellow}warning: ${default yellow}ignore[%s]: %s", target:name(), sourcefile)
end
end
-- make target
function _make_target(target)
-- TODO
-- disable precompiled header first
target:set("pcheader", nil)
target:set("pcxxheader", nil)
-- build source batches
for sourcekind, sourcebatch in pairs(target:sourcebatches()) do
if not sourcebatch.rulename then
if type(sourcebatch.objectfiles) == "string" then
_make_single_object(target, sourcekind, sourcebatch)
else
_make_each_objects(target, sourcekind, sourcebatch)
end
end
end
end
-- make all
function _make_all()
-- make flags
_g.firstline = true
for _, target in pairs(project.targets()) do
local isdefault = target:get("default")
if not target:isphony() and (isdefault == nil or isdefault == true) then
_make_target(target)
end
end
end
-- generate compilation databases for clang-based tools(compile_flags.txt)
--
-- references:
-- - https://clang.llvm.org/docs/JSONCompilationDatabase.html
--
function make(outputdir)
-- enter project directory
local oldir = os.cd(os.projectdir())
-- make all
g_flags = {}
_make_all()
-- write to file
local flagfile = io.open(path.join(outputdir, "compile_flags.txt"), "w")
for i, flag in ipairs(g_flags) do
flagfile:write(flag, '\n')
end
flagfile:close()
-- leave project directory
os.cd(oldir)
end
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