Re: Howto: Linking LuaJIT with MSCRT.DLL

["Dimiter \"malkia\" Stanev" <malkia@...>]

One more thing!

I had to lie to LuaJIT that it's compiling with _MSC_VER less than 1400, 
otherwise it would use ftelli64 which is not available on the XP 
msvcrt.dll (it is in Vista), hence the

> echo cl.exe /D_MSC_VER=1399 %%* > cl.cmd

Here is what happens if I let cl.exe execute normally:

   Creating library lua51.lib and object lua51.exp
ljamalg.obj : error LNK2019: unresolved external symbol __imp___ftelli64 
referenced in function _lj_cf_io_method_seek
lua51.dll : fatal error LNK1120: 1 unresolved externals

As a different workaround I've thought of using telli64(fileno(x)) - but 
it's actually not correct if the file is buffered (and in general not). 
telli64 exists there... (you need Windows XP and depends.exe on 
c:\windows\system32\msvcrt.dll really to tell)

This off course makes the luajit to lose it's ability to read files 
bigger than 4GB which might be problematic, not for me yet :)

Thanks,
Dimiter "malkia" Stanev.

On 6/29/2011 5:58 PM, Dimiter "malkia" Stanev wrote:
> Hi group,
>
> So I wanted to move my project to use MSVCRT.DLL for LuaJIT (but the
> it's also related to lua, and Windows in general).
>
> With VS2008, VS2010 that is no longer possible, but after some googling
> I found this wonderful page:
>
> http://kobyk.wordpress.com/2007/07/20/dynamically-linking-with-msvcrtdll-using-visual-c-2005/
>
>
> The solution is to use WDK and link to msvcrt_2000.obj (32-bit only).
>
> More clues on google:
> http://www.google.com/search?q=%22msvcrt_win2000.obj%22
>
> Whether it's safe or not, I can't tell. But it works for on my laptop
> with Windows XP (actually bootcamped MacBook), and at work Vista 64
> Business and Windows 7.
>
> Here is the file that I'm compiling luajit with (it could work for other
> things too).
>
> ----------------------------------------------------------------------
>
> rem This is
> rem E:\p\ufo\build\Windows\luajit-wdk.cmd
> rem
> rem Assuming LuaJit (2.00+) is here:
> rem E:\p\luajit
> rem
> rem and that these folders exists
> rem E:\p\ufo\bin\Windows\x86
> rem E:\p\ufo\bin\Windows\x64
> rem
> rem also assumes that the Windows DDK is located here
> rem (change it, or provided as second parameter):
> rem e:\apps\wdk
> rem
> rem and that lua is installed and on the PATH (I've used cygwin one)
> rem if not - just remove the line where I'm deleteing buildvm-*.h files
> rem
> rem First parameter to the batch file is 32 or 64
>
> @echo off
> setlocal
>
> set _UFODIR=%~dp0..\..
> set _LUAJITDIR=%_UFODIR%\..\luajit\src
> set _ARCH=%1
> set _WDK=%2
>
> if "%_ARCH%"=="" set _ARCH=32
> if "%_WDK%"=="" set _WDK=e:\apps\wdk
> if "%_ARCH%"=="32" set _TARGET=i386
> if "%_ARCH%"=="32" set _LUA_ARCH=x86
> if "%_ARCH%"=="64" set _TARGET=amd64
> if "%_ARCH%"=="64" set _LUA_ARCH=x64
> if "%_TARGET%"=="" (
> echo You should specify 32 or 64 as first argument
> goto :EOF
> )
>
> set _CROSS_TARGET=
> if "%_TARGET%"=="amd64" set _CROSS_TARGET=x32-64
>
> echo Compiling LuaJIT: [_ARCH=%_ARCH%] [_TARGET=%_TARGET%]
> [_CROSS_TARGET=%_CROSS_TARGET%]
> call %_WDK%\bin\setenv.bat %_WDK% fre %_CROSS_TARGET% win7 no_oacr
>
> set LIB=%BASEDIR%\lib\crt\%_TARGET%;%BASEDIR%\lib\win7\%_TARGET%;%LIB%
> set INCLUDE=%CRT_INC_PATH%;%INCLUDE%;
>
> pushd %_LUAJITDIR%
> del *.obj buildvm_*.h 1>nul 2>nul
> del link.cmd cl.cmd 1>nul 2>nul
> echo cl.exe /D_MSC_VER=1399 %%* > cl.cmd
> if "%_TARGET%"=="i386" echo link.exe
> %_WDK%\lib\win7\%_TARGET%\msvcrt_win2000.obj %%* > link.cmd
> call msvcbuild amalg
> del link.cmd cl.cmd 1>nul 2>nul
> git log -1 >> lua51.dll
> git log -1 >> luajit.exe
> call :install lua51.dll %_UFODIR%\bin\Windows\%_LUA_ARCH%
> call :install luajit.exe %_UFODIR%\bin\Windows\%_LUA_ARCH%
> popd
> goto :EOF
>
> :install
> echo install: [move /y %*]
> move /y %*
> goto :EOF
>
> ----------------------------------------------------------------------
>
> Also this ugly diff (on my side). Unfortunately if batch file is to be
> called it has to be.... ahem "call"-ed (my cl.bat that later calls
> cl.exe is such)
>
> ----------------------------------------------------------------------
>
> E:\p\luajit\src>git diff msvcbuild.bat
> diff --git a/src/msvcbuild.bat b/src/msvcbuild.bat
> index c7e5df6..b718a8a 100644
> --- a/src/msvcbuild.bat
> +++ b/src/msvcbuild.bat
> @@ -14,8 +14,8 @@
> @if not defined INCLUDE goto :FAIL
>
> @setlocal
> -@set LJCOMPILE=cl /nologo /c /MD /O2 /W3 /D_CRT_SECURE_NO_DEPRECATE
> -@set LJLINK=link /nologo
> +@set LJCOMPILE=call cl /nologo /c /MD /O2 /W3 /D_CRT_SECURE_NO_DEPRECATE
> +@set LJLINK=call link /nologo
> @set LJMT=mt /nologo
> @set LJLIB=lib /nologo
> @set DASMDIR=..\dynasm
>
> Thanks,
> Dimiter "malkia" Stanev.