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From:	Lee <ler762 AT gmail DOT com>
Date:	Fri, 8 Sep 2017 14:53:41 -0400
Message-ID:	<CAD8GWsu53ZtB5exta8vmpAJZiNsvAi2xKK0KKctq-hiaW5Fsfw@mail.gmail.com>
Subject:	Re: i686-w64-mingw32-gcc -fstack-protector-strong
To:	cygwin AT cygwin DOT com
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On 9/8/17, Marco Atzeri   wrote:
> On 08/09/2017 16:14, Lee wrote:
>> I'm hoping that I'm just missing a library, but which one?  Even
>> better, how to tell which one?
>>
>> $ i686-w64-mingw32-gcc -o div.exe div.c
>> $ ./div
>>    works
>>
>> $ i686-w64-mingw32-gcc -fstack-protector-strong -o div.exe div.c
>> $ ./div
>> C:/cygwin/home/Lee/t/div.exe: error while loading shared libraries: ?:
>> cannot open shared object file: No such file or directory
>>
>> $ ldd div.exe
>>          ntdll.dll => /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
>> (0x7ffef5c50000)
>>          ??? => ??? (0x778f0000)
>>          wow64.dll => /cygdrive/c/WINDOWS/System32/wow64.dll (0x50e50000)
>>          wow64win.dll => /cygdrive/c/WINDOWS/System32/wow64win.dll
>> (0x50dd0000)
>>
>
> try
>    cygcheck ./div.exe

nothing useful for a non-cygwin program?
$ cygcheck ./div.exe
C:\cygwin\home\Lee\t\div.exe

vs. built using cygwin:
$ gcc -fstack-protector-strong -o div.exe div.c
$ ./div
   works
$ cygcheck ./div.exe
C:\cygwin\home\Lee\t\div.exe
  C:\cygwin\bin\cygwin1.dll
    C:\WINDOWS\system32\KERNEL32.dll
      C:\WINDOWS\system32\ntdll.dll
      C:\WINDOWS\system32\KERNELBASE.dll
  C:\cygwin\bin\cygssp-0.dll



Was there ever a man page for cygcheck?  I remember looking at one,
but maybe I it was https://cygwin.com/cygwin-ug-net/cygcheck.html ??
$ man cygcheck
No manual entry for cygcheck

$ info cygcheck
info: No menu item 'cygcheck' in node '(dir)Top'

Lee

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