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Date: Sat, 22 May 2010 02:46:31 +0200
From: Reini Urban <rurban AT x-ray DOT at>
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To: cygwin AT cygwin DOT com
Subject: Re: [bulk] - Re: Missing stack_chk type functions
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DEWI - N. Zacharias schrieb:
>
> Moin Reini,
>
>
>> Von: Reini Urban [mailto:rurban AT x-ray DOT at]
>> Gesendet: Mittwoch, 19. Mai 2010 20:14
>> An: cygwin AT cygwin DOT com
>> Betreff: [bulk] - Re: Missing stack_chk type functions
>>
>> DEWI - N. Zacharias schrieb:
>>>
>>> Hi all,
>>> I tried to install the  Win32::GuiTest from cpan.
>>> It did not work because
>>>
>>> g++  -shared GuiTest.o DibSect.o  -o
>> blib/arch/auto/Win32/GuiTest/GuiTest.dll  \
>>>             /usr/lib/perl5/5.10/i686-cygwin/CORE/cygperl5_10.dll -L/usr/lib/w32api
>> -lgdi32        \
>>>
>>> GuiTest.o:GuiTest.cpp:(.text+0x91f0): undefined reference to
>> `___stack_chk_guard'
>>> GuiTest.o:GuiTest.cpp:(.text+0x96c1): undefined reference to
>> `___stack_chk_fail'
>>> [...]
>>>
>>> I found Re: glibc-2.4 __stack_chk_guard/__pointer_chk_guard from 2006
>> which is pretty old and refers to using distcc
>>> So I don't know whats the problem today.
>>
>> You need to install gcc4 and set it as default with set-gcc-default-4.sh
>
> That was not the solution (gcc4 was already installed ) and running  set-gcc-default-4.sh makes no difference

Sorry, yes you are right. -lssp is missing.
It should have been included automatically from the spces, however it 
didn't.

g++  -shared GuiTest.o DibSect.o  -o 
blib/arch/auto/Win32/GuiTest/GuiTest.dll 
/usr/lib/perl5/5.10/i686-cygwin/CORE/cygperl5_10.dll -L/usr/lib/w32api 
-lgdi32 -lssp
works.

Also
#ifdef __cplusplus
extern "C" {
#endif
is commented out in GuiTest.xs
-- 
Reini Urban
http://phpwiki.org/  http://murbreak.at/

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diff -bu ./GuiTest.xs~ ./GuiTest.xs
--- ./GuiTest.xs~	2008-10-01 13:32:59.000000000 +0200
+++ ./GuiTest.xs	2010-05-22 02:39:35.579625000 +0200
@@ -24,13 +24,13 @@
 
 
 #ifdef __cplusplus
-//extern "C" {
+extern "C" {
 #endif
 #include "EXTERN.h"
 #include "perl.h"
 #include "XSUB.h"
 #ifdef __cplusplus
-//}
+}
 #endif
 
 #define MAX_DATA_BUF 1024
diff -bu ./Makefile.PL~ ./Makefile.PL
--- ./Makefile.PL~	2008-10-01 13:32:59.000000000 +0200
+++ ./Makefile.PL	2010-05-22 02:45:13.548375000 +0200
@@ -29,7 +29,7 @@
 	(( $^O =~ /cygwin/i) ? (
 			LD		=> 'g++',
 			LDDLFLAGS	=> '-shared',
-			LIBS		=> ['-L/usr/lib/w32api -lgdi32'],
+			LIBS		=> ['-L/usr/lib/w32api -lgdi32 -lssp'],
 	) : ()),
 	ABSTRACT_FROM			=> 'lib/Win32/GuiTest.pm',
 	AUTHOR				=> 'Dennis K. Paulsen (ctrondlp AT cpan DOT org), Ernesto Guisado (erngui AT acm DOT org)',


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