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Date:	Wed, 31 Jul 2013 12:28:26 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: [BUG ?] Failed to rebuild Cygwin
Message-ID:	<20130731102826.GX4166@calimero.vinschen.de>
Reply-To:	cygwin AT cygwin DOT com
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References:	<003401ce8dcb$a630b310$f2921930$%fedin AT samsung DOT com> <20130731095949 DOT GV4166 AT calimero DOT vinschen DOT de> <51F8E342 DOT 5020509 AT gmail DOT com>
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User-Agent:	Mutt/1.5.21 (2010-09-15)

On Jul 31 18:13, JonY wrote:
> On 7/31/2013 17:59, Corinna Vinschen wrote:
> > On Jul 31 12:55, Pavel Fedin wrote:
> >>  Hello!
> >>
> >>  I have occasionally found a little problem in path check code. Attempt to
> >> reference thing like '/..' fails, however at least under Linux this resolves
> >> to root, and you can actually attempt to go past-root as many times as you
> >> want, e. g. '/../../../..'. The bug was occasionally revealed by 'make' test
> >> suite.
> >>  I wanted to fix it, but cannot rebuild Cygwin DLL. The build ends up in:
> >> --- cut ---
> >> x86_64-w64-mingw32-g++  -o strace.exe strace.o path.o -L/usr/lib/w32api
> >> -static -lntdll
> >> /usr/x86_64-w64-mingw32/sys-root/mingw/lib/../lib/crt2.o: In function
> >> `__tmainCRTStartup':
> >> /usr/src/debug/mingw64-x86_64-runtime-3.0b_svn5935-1/crt/crtexe.c:285:
> >> undefined reference to `_set_invalid_parameter_handler'
> >> /usr/x86_64-w64-mingw32/sys-root/mingw/lib/../lib/libmingwex.a(lib64_libming
> >> wex_a-mingw_pformat.o): In function `__pformat_exponent_digits':
> >> /usr/src/debug/mingw64-x86_64-runtime-3.0b_svn5935-1/stdio/mingw_pformat.c:1
> >> 76: undefined reference to `_get_output_format'
> >> collect2: error: ld returned 1 exit status
> >> Makefile:143: recipe for target `cygwin-console-helper.exe' failed
> >> make[3]: *** [cygwin-console-helper.exe] Error 1
> >> --- cut ---
> >>  Likely some MinGW CRT bug ?
> > 
> > This also occurs on Fedora right now.
> > 
> > AFAICS, the culprit is that the latest Cygwin w32api package doesn't
> > match the files from mingw-crt for some reason.
> > 
> > The build uses -L/usr/lib/w32api (-L/usr/i686-pc-cygwin/lib/w32api when
> > cross building on Fedora), so the libs are taken from the w32api-runtime
> > package.  However, the compiler uses the default crt file
> > /usr/i686-w64-mingw32/sys-root/mingw/lib/../lib/crt2.o which is provided
> > by the mingw-crt package.
> > 
> > This is a bug in Cygwin's Makefile since you should never use the w32api
> > stuff for mingw executables, only for Cygwin executables, but still...
> > 
> > JonY, do you have an idea why the mingw-crt differs that much from the
> > w32api stuff that the above error occurs?
> > 
> 
> Likely, because _set_invalid_parameter_handler was a stub in mingwex
> that loads msvcrt.dll, it was disabled as a quickfix, as it was using
> mingw-w64 stdlib.h directly. I did not think Cygwin win32api might need it.
> 
> The build should be fixed on trunk, I will roll out a new release soon.

Cool, thanks!


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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