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Message-ID: <C9150052B112D3119E9E0004ACA6E4370345CE26@tepg1.tepg.co.uk>
From: "Bruce Adams [TSP Sunbury]" <bruadams AT tycoint DOT com>
To: "Max Bowsher" <maxb AT ukf DOT net>
Cc: <cygwin AT cygwin DOT com>
Subject: RE: Post install smoke test (or "Oh no not again")
Date: Tue, 11 Mar 2003 15:58:45 -0000
MIME-Version: 1.0


>-----Original Message-----
>From: Max Bowsher [mailto:maxb AT ukf DOT net] 
>Sent: 11 March 2003 13:40
>To: Bruce Adams [TEPG Sunbury]
>Cc: cygwin AT cygwin DOT com
>Subject: Re: Post install smoke test (or "Oh no not again")
>
>
>On Tue, 11 Mar 2003, Bruce Adams [TEPG Sunbury] wrote:
>
>> Hi,
>>    I just did a fresh installation of gcc on another machine and had 
>> an "oh no not again" moment. Attempting to compile:
>>
>> int main(int argc,char** argv) {
>>   return 0;
>> } //main
>>
>> Gives the output:
>>
>> gcc hello.o -o hello.exe -lstdc++
>                           ^^^^^^^^
>Why? Don't do that.
>
Granted unecessary for this particular example.
It's a leftover from an example that actually used the standard library.

>> hello.o(.text+0x0):fake: multiple definition of `_mainCRTStartup'
>> 
>/usr/lib/gcc-lib/i686-pc-cygwin/3.2/../../../crt0.o(.text+0x0): first 
>> defined here
>> hello.o(.text+0x40):fake: multiple definition of `___do_frame_init'
>> /usr/lib/gcc-lib/i686-pc-cygwin/3.2/crtbegin.o(.text+0x0): first 
>> defined here
>> hello.o(.text+0x70):fake: multiple definition of `___do_frame_fini'
>> /usr/lib/gcc-lib/i686-pc-cygwin/3.2/crtbegin.o(.text+0x30): first 
>> defined here
>> hello.o(.data+0x0): In function `main':
>> /cygdrive/c/BruceA/code/typelist/hello.cpp:4: multiple definition of 
>> `___cygwin_crt0_bp'
>> 
>/usr/lib/gcc-lib/i686-pc-cygwin/3.2/../../../crt0.o(.data+0x0): first 
>> defined here
>> hello.o(.rdata+0x0): In function `main':
>> /cygdrive/c/BruceA/code/typelist/hello.cpp:4: multiple definition of 
>> `___EH_FRAME_BEGIN__'
>> /usr/lib/gcc-lib/i686-pc-cygwin/3.2/crtbegin.o(.eh_frame+0x0): first 
>> defined here
>> collect2: ld returned 1 exit status
>> make: *** [hello.exe] Error 1
>>
>>
>> I guess this means I have another corrupted installation. 
>Which brings 
>> me to two questions.
>>
>> 1) what standard corrective actions can we suggest for "dodgey" 
>> installations
>
>No standard corrective action, because "dodgey" is far too unspecific.
>
Well since all I know from my perspective is I installed and it doesn't
work I can't be much more specific.  But if I come on this list and it
say "it doesn't work" I will be asked several things.  Have I checked the
FAQ, searched the mailing list etc.  What is your cygcheck -c output
and other such quesitons.  For each specific package these may differ.
Judging from my output maybe it looks more like binutils is broken than
gcc itself.

>> 2) what would be the appropriate way to implement a 
>post-install smoke 
>> test.
>
>It would be more appropriate to find out what happened, and 
>make sure it doesn't occur in the future. Therefore, no 
>smoketest needed.
>
An interesting corollary to prevention is better than cure.
Fix the problem so that it doesn't re-occur is of course the first priority
but altering the system so that it is easier to detect and deal with new
bugs of a similar nature (not to mention regression testing the one you
think
you've fixed but may only have fixed one aspect of) is still worthwhile.

>> 1) run cygcheck -c
>>
>> See enclosed output.
>> This doesn't actually help me.
>> Should I try re-installing from a different mirror?
>>
Neither alas did installing from a different mirror :-(.
Is there a listing of the most current package set that is internally
consistent and working? or is that supposed to be a pre-release criteria
for any package?

>> 2) Presumably raw bash would be preferable to tcl or perl.
>>    Dos is just sick.
>>    Personally I would like to use TCL because it is what I know best
>>    but it needs to be compatible with whatever's already 
>being used as it
>>    probably ought to possible to install cygwin without TCL or perl.
>>
>>    at end of gcc package installation - append gcc-smoke.sh 
>to a list of
>>    post install smoke tests to run.
>>
>>    At (current) end of post install have another bash script 
>iterate over
>>    the scripts in smoketest.lst or whatever and dump the 
>output into a
>>    detailed postinstall log.
>>    Each script can generate one line (or at least minimal) 
>error reports
>>    that get displayed to the user at the very end a long 
>with a bit of 
>> advice
>>    saying what to try to fix it before coming here.
>>    It would be good if we could associate each error with a separate 
>> piece of
>>    advice but maybe that's version 2.
>>
>> I can probably supply the smoke test itself, though my bash is a bit 
>> rusty but so probably can pretty much anyone on the list.
>> Is the rest of it a 5 minute job?
>
>I do not think a smoketest is necessary or desirable.
>
>If you can find any problems, then lets fix them, so we don't 
>*need* to test for them.
>
>
>Max.
>
>
TQM places the emphasis on preventing problems from occurring but that does
not mean you don't need to test the final product.

Regards,
        Bruce A.


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