Re: cmp in test scripts

[Earnie Boyd]

John Poltorak wrote:
> 
> On Thu, Jan 24, 2002 at 06:00:36PM -0500, Earnie Boyd wrote:
> > John Poltorak wrote:
> > >
> > > Is there any way that autoconf can be used to handle cmp in test scripts?
> > >
> > > Occasionally a test will fail because of the use of cmp to test
> > > differences between generated data and expected results due to line
> > > termination on DOS filesystems. If diff is used instead the test may
> > > succeed.
> > >
> > > What I'd like to see is some check to see if the use of cmp is valid and
> > > if not then maybe set CMP=diff ...
> > >
> >
> > What shell are you using on the DOS filesystem?  A properly ported cmp
> > would be a better solution.
> 
> What relevance does the shell have?
> 

Worlds of difference.  A properly ported shell might eliminate the
concern for a properly ported cmp.  Are you talking strictly MSDOS or
are you talking COMMAND.COM/CMD.EXE or are you talking UWIN or are you
talking CYGWIN or are you talking ...

> "hello, world\n" is longer on a DOS filesystem than on Unix so cmp will
> distinguish between whereas diff won't.
> 

No it isn't.  "hello, world\n" is the same size in both worlds.  "hello,
world\r\n" is the same size in both worlds.  A properly ported cmp would
be a better method.  You're problem isn't an autoconf problem, it's a
tool problem.

Earnie.

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