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Re: make signal text descriptions

From: J. Grant
Subject: Re: make signal text descriptions
Date: Wed, 29 Oct 2003 21:07:39 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5b) Gecko/20030824


Thank you for your email.

on the 29/10/03 00:03, Paul D. Smith wrote:
%% "J. Grant" <address@hidden> writes:

  jg> Could the signals and errors that Make displays include the text
  jg> description of them?  The same way that other programs do not
  jg> return the errno.h value, but the text that it corresponds too.

  jg> e.g.:

  jg> Signal 127

GNU make does print the signal number as long as it can determine the
right one.  If you are seeing this, then it means GNU make got a signal
it couldn't translate.  This often means that the configuration for your
system was inaccurate, or that your system doesn't provide proper signal
translation facilities.

Since you don't specify what type of system you're working on I can't
give more help than that, but your next example seems to imply it's DOS,
Windows, or similar.  In that case you should check on the
address@hidden mailing list and see whether signal translation has
been ported to work on DOS/Windows platforms.

ok, I've cc address@hidden, so maybe someone can tell me if signal numbers are decoded. Would you include this internally? or use a lib etc?

  jg> z:\bin\make.exe: *** [mak19] Error 255

It is not appropriate for make to translate this code into an errno
value, because it is _NOT_ an errno value.

This code is the return value from the program that make invoked, and
that return value is virtually never an errno value.

Ok, sorry, I was only giving errno.h as an example, I misunderstood and thought these were make specific signals.

In the example you give here, for example, the invoked program exited
with a -1 exit code, which is not a valid errno value.

Is there any reason this is printed as unsigned char then? Would not -1 be more appropriate if that was what it was originally?

Kind regards


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