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Re: ldd differences
- From: Roger Wells <roger dot k dot wells at leidos dot com>
- To: <cygwin at cygwin dot com>
- Date: Mon, 14 Mar 2016 16:24:18 -0400
- Subject: Re: ldd differences
- Authentication-results: sourceware.org; auth=none
- References: <56E6DA81 dot 3050100 at leidos dot com> <87lh5lufh4 dot fsf at Rainer dot invalid> <56E702EC dot 5060807 at leidos dot com> <87h9g8vptm dot fsf at Rainer dot invalid> <56E715EE dot 4030006 at leidos dot com>
On 03/14/2016 03:50 PM, Roger Wells wrote:
> On 03/14/2016 03:09 PM, Achim Gratz wrote:
>> Roger Wells writes:
>>>> Try cygcheck rather than ldd.
>>>>
>>> Thanks for responding.
>>>
>>> Here's what happens:
>>>
>>> $ cygcheck ./z12.exe
>>> C:\cygwin64\home\roger\src\z12\z12.exe
>>>
>>> or
>>>
>>> $ cygcheck --verbose ./z12.exe
>>> C:\cygwin64\home\roger\src\z12\z12.exe (not x86_64 dll)
>>
>> Then it doesn't seem to be a Cygwin binary. Is that the product of some
>> cross-compilation, perhaps?
>>
>
> It was built with MinGW GCC 4.9.3 (32 bit)
> However, recall that the older 32 bit cygwin ldd had no problem with it.
> We have been using MinGW in a Cygwin environment for over two decades
> with out surprises. I wonder if the fact that the executable is 32-bit
> is the culprit and the 64 bit Cygwin tools are expecting 64 bit items to
> work on? I expect that ldd etc are attempting to do what the OS does
> when it loads the executable wrt identifying what resources (i.e. dll's)
> are required. It shouldn't matter what tool built it and both 32 bit
> and 64 bit items are going to be around for a while and both need to be
> handled correctly. I'll probably install 32 bit Cygwin and test the
> hypothesis. I'll let you know.
>
>
> cheers,
> roger
>
Here is what happens with cygcheck from a new 32 bit Cygwin install:
$ c:/cygwin/bin/cygcheck ./z12.exe
C:\cygwin64\home\roger\src\z12\z12.exe
C:\WINDOWS\system32\KERNEL32.dll
C:\WINDOWS\system32\ntdll.dll
C:\WINDOWS\system32\KERNELBASE.dll
C:\WINDOWS\system32\api-ms-win-eventing-provider-l1-1-0.dll
C:\Program Files\TortoiseSVN\bin\api-ms-win-core-handle-l1-1-0.dll
C:\WINDOWS\system32\api-ms-win-core-synch-l1-2-0.dll
C:\WINDOWS\system32\api-ms-win-core-timezone-l1-1-0.dll
C:\Program Files\TortoiseSVN\bin\api-ms-win-core-string-l1-1-0.dll
C:\Program Files\TortoiseSVN\bin\api-ms-win-core-util-l1-1-0.dll
C:\Program Files\TortoiseSVN\bin\api-ms-win-core-profile-l1-1-0.dll
C:\WINDOWS\system32\api-ms-win-core-xstate-l2-1-0.dll
C:\Program Files\TortoiseSVN\bin\api-ms-win-core-console-l1-1-0.dll
C:\WINDOWS\system32\msvcrt.dll
C:\cygwin64\home\roger\lib\libnmea0183.dll
C:\MinGW\bin\libgcc_s_dw2-1.dll
C:\MinGW\bin\libstdc++-6.dll
C:\cygwin64\home\roger\lib\libsensors.dll
C:\cygwin64\home\roger\lib\libutility.dll
C:\WINDOWS\system32\ADVAPI32.DLL
C:\WINDOWS\system32\SECHOST.dll
C:\WINDOWS\system32\RPCRT4.dll
C:\WINDOWS\system32\SspiCli.dll
C:\WINDOWS\system32\CRYPTBASE.dll
C:\WINDOWS\system32\bcryptPrimitives.dll
C:\WINDOWS\system32\USER32.dll
C:\WINDOWS\system32\GDI32.dll
C:\WINDOWS\system32\WINMM.DLL
C:\WINDOWS\system32\WINMMBASE.dll
C:\WINDOWS\system32\WSOCK32.DLL
C:\WINDOWS\system32\WS2_32.dll
C:\cygwin64\home\roger\lib\libfilters.dll
Much more useful.
cheers again,
roger
>>
>> Regards,
>> Achim.
>>
>
>
--
Roger Wells, P.E.
leidos
221 Third St
Newport, RI 02840
401-847-4210 (voice)
401-849-1585 (fax)
roger.k.wells@leidos.com
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