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----------------------------------------------------------------------------
-- Lua script to embed the rolling release version in luajit.h.
----------------------------------------------------------------------------
-- Copyright (C) 2005-2025 Mike Pall. All rights reserved.
-- Released under the MIT license. See Copyright Notice in luajit.h
----------------------------------------------------------------------------
local arg = {...}
local FILE_ROLLING_H = arg[1] or "luajit_rolling.h"
local FILE_RELVER_TXT = arg[2] or "luajit_relver.txt"
local FILE_LUAJIT_H = arg[3] or "luajit.h"
local function file_read(file)
local fp = assert(io.open(file, "rb"), "run from the wrong directory")
local data = assert(fp:read("*a"))
fp:close()
return data
end
local function file_write_mod(file, data)
local fp = io.open(file, "rb")
if fp then
local odata = assert(fp:read("*a"))
fp:close()
if odata == data then return end
end
fp = assert(io.open(file, "wb"))
assert(fp:write(data))
assert(fp:close())
end
local text = file_read(FILE_ROLLING_H):gsub("#error.-\n", "")
local relver = file_read(FILE_RELVER_TXT):match("(%d+)")
if relver then
text = text:gsub("ROLLING", relver)
else
io.stderr:write([[
**** WARNING Cannot determine rolling release version from git log.
**** WARNING The 'git' command must be available during the build.
]])
file_write_mod(FILE_RELVER_TXT, "ROLLING\n") -- Fallback for install target.
end
file_write_mod(FILE_LUAJIT_H, text)
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