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Subject: Re: Cygwin 64 problem
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From: Ken Brown <kbrown AT cornell DOT edu>
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Date: Sun, 27 Nov 2016 17:42:14 -0500
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On 11/27/2016 5:30 PM, Duncan Roe wrote:
> On Sun, Nov 27, 2016 at 11:02:29AM -0500, Ken Brown wrote:
>> On 11/27/2016 9:03 AM, Girish Joglekar wrote:
>>> Hi Ken,
>>> Thank you for your reply on the Cygwin mailing list. I have created a
>>> slightly smaller test example smaller than what I had created in Feb.
>>> Attached is a tar file. After make insall if you run TEST.x and click
>>> the Open button, it gives segmentation fault.
>>> Hope you will be able to help.
>>> Thank you.
>>> Girish
>>
>> Please keep the discussion on the mailing list so that people who might be
>> able to help will see it.  I personally am not familiar with X11
>> programming, so I'm not one of those people.
>>
>> I do have a few comments, however:
>>
>> 1. This may be slightly smaller than your previous program, but it is still
>> *very* far from a small test case.  You really can't expect people to debug
>> a program of this size for you.
>>
>> 2. I suggest that you build with -Wall (as Marco already suggested in the
>> earlier discussion) and fix all the compiler warnings.  I saw several that
>> need attention (aside from the many "unused variable" warnings).  It
>> wouldn't hurt to also use -Wextra.
>>
>> 3. I also suggest that you use gdb to find out where the program is crashing
>> and why.  You made a start on that in the discussion last March, but you
>> didn't follow through.  (By the way, I recommend building without
>> optimization; otherwise you may not be able to get accurate information
>> about the crash from gdb.)
>>
>> 4. If, after the steps above, you still think the crash is due to a Cygwin
>> bug rather than a programming error, then try to extract from your program a
>> test case as small as possible that reproduces the crash.
>>
>> Ken
>
> I thought I would have a crack at this but immediately got the error:
>
> testc.h:8:19: fatal error: Xm/Xm.h: No such file or directory
>  #include <Xm/Xm.h>
>
> I thought /usr/include/Xm/ should come with motif, which I have installed.
>
> What have I missed?

libXm-devel

Ken


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