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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 xmake.lua
--
-- define rule: lex
rule("lex")
add_deps("c++")
add_orders("yacc", "lex")
set_extensions(".l", ".ll")
before_buildcmd_file(function (target, batchcmds, sourcefile_lex, opt)
-- get lex
import("lib.detect.find_tool")
local lex = assert(find_tool("flex") or find_tool("lex"), "lex not found!")
-- get c/c++ source file for lex
local extension = path.extension(sourcefile_lex)
local sourcefile_cx = path.join(target:autogendir(), "rules", "lex_yacc", path.basename(sourcefile_lex) .. (extension == ".ll" and ".cpp" or ".c"))
-- add objectfile
local objectfile = target:objectfile(sourcefile_cx)
table.insert(target:objectfiles(), objectfile)
-- add commands
batchcmds:show_progress(opt.progress, "${color.build.object}compiling.lex %s", sourcefile_lex)
batchcmds:mkdir(path.directory(sourcefile_cx))
batchcmds:vrunv(lex.program, {"-o", path(sourcefile_cx), path(sourcefile_lex)})
batchcmds:compile(sourcefile_cx, objectfile)
-- add deps
batchcmds:add_depfiles(sourcefile_lex)
batchcmds:set_depmtime(os.mtime(objectfile))
batchcmds:set_depcache(target:dependfile(objectfile))
end)
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