>> With Visual Studio 10 x64, I get the following error at configure time:
>>
>> ...
>> D:\build.ntx64vs10>perl ms\uplink-x86_64.pl masm 1>ms\uptable.asm
>> D:\build.ntx64vs10>ml64 -c -Foms\uptable.obj ms\uptable.asm
>> Assembling: ms\uptable.asm
>> ms\uptable.asm(356) : error A2088:END directive required at end of file
>> ms\uptable.asm(356) : fatal error A1010:unmatched block nesting :
>> _lazy18
>> Microsoft (R) Macro Assembler (x64) Version 10.00.40219.01
>> Copyright (C) Microsoft Corporation. All rights reserved.
>> D:\build.ntx64vs10>perl util\mk1mf.pl VC-WIN64A 1>ms\nt.mak
>> ...
>
>Which Perl? There was somewhat similar failure reported in mixture of
>different run-time environments like native Windows, MSYS, Cygwin. If
>it's not "native" Perl like ActiveState, then switch to "native" one.
>Otherwise it might be interference with antivirus, most likely Windows
>Defender. If you at his point can run 'ml64 -c -Foms\uptable.obj
>ms\uptable.asm' manually from command prompt, then switch off your
>antivirus. The fact that it works with other compilers is
>circumstantial, this kind of failure is about delicate timing.
I'm using:
>perl -v
This is perl 5, version 12, subversion 4 (v5.12.4) built for
MSWin32-x86-multi-thread
(with 9 registered patches, see perl -V for more detail)
Copyright 1987-2010, Larry Wall
Binary build 1205 [294981] provided by ActiveState
http://www.ActiveState.com
Built Jun 20 2011 18:35:25
I'm not running any antivirus software, including WIndows Defender (I
explicitly disabled it).
But your mention of "delicate timing" prompted me to look at the
ms/uplink-x86_64.pl script more closely and I think I figured out the
problem: buffering.
It appears that, on windows at least, pipes do not always get flushed when
they are closed. I verified this was happening by modifying ms/do_win64a.bat
to run:
:ml64
perl ms\uplink-x86_64.pl masm > ms\uptable.asm
TYPE MS\UPTABLE.ASM
ml64 -c -Foms\uptable.obj ms\uptable.asm
and verified that indeed, the file was sometimes truncated.
My proposed patch, with which I can no longer reproduce the problem:
--- ms/uplink-x86_64.pl.~1~ 2008-12-19 02:17:29.000000000 -0800
+++ ms/uplink-x86_64.pl 2012-05-21 15:22:37.555669600 -0700
@@ -3,6 +3,8 @@
$output=shift;
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
open STDOUT,"| $^X ${dir}../crypto/perlasm/x86_64-xlate.pl $output";
+# disable stdio buffering, which isn't always flushed to pipes.
+$| = 1;
push(@INC,"${dir}.");
require "uplink-common.pl";
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