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From: Robert Schiele <rschiele@gmail.com>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: Jakub Narebski <jnareb@gmail.com>, git@vger.kernel.org
Subject: Re: [PATCH] autoconf: Add test for sys/select.h header file
Date: Fri, 25 Jan 2008 13:53:04 +0100	[thread overview]
Message-ID: <20080125125304.GO30676@schiele.dyndns.org> (raw)
In-Reply-To: <alpine.LSU.1.00.0801251229250.5731@racer.site>

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On Fri, Jan 25, 2008 at 12:30:27PM +0000, Johannes Schindelin wrote:
> Hi,
> 
> On Fri, 25 Jan 2008, Jakub Narebski wrote:
> 
> > diff --git a/configure.ac b/configure.ac
> > index af177fd..85d7ef5 100644
> > --- a/configure.ac
> > +++ b/configure.ac
> > @@ -235,6 +235,12 @@ test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
> >  ## Checks for header files.
> >  AC_MSG_NOTICE([CHECKS for header files])
> >  #
> > +# Define NO_SYS_SELECT_H if you don't have sys/select.h.
> > +AC_CHECK_HEADER([sys/select.h],
> > +[NO_SYS_SELECT_H=],
> > +[NO_SYS_SELECT_H=UnfortunatelyYes])
> > +AC_SUBST(NO_SYS_SELECT_H)
> > +#
> 
> Just because I am curious: would that not define "NO_SYS_SELECT_H" in both 
> cases?  IOW would the "ifdef NO_SYS_SELECT_H" not be triggered all the 
> time?

No, in make the empty string is equal to not being defined.

Robert

-- 
Robert Schiele
Dipl.-Wirtsch.informatiker	mailto:rschiele@gmail.com

"Quidquid latine dictum sit, altum sonatur."

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  reply	other threads:[~2008-01-25 12:53 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-24 18:34 [PATCH] some systems don't have (and need) sys/select.h Robert Schiele
2008-01-24 21:15 ` Johannes Schindelin
2008-01-24 21:17 ` Junio C Hamano
2008-01-24 21:58   ` Robert Schiele
2008-01-25 11:19 ` [PATCH] autoconf: Add test for sys/select.h header file Jakub Narebski
2008-01-25 12:30   ` Johannes Schindelin
2008-01-25 12:53     ` Robert Schiele [this message]
2008-01-26  6:25   ` Junio C Hamano
2008-01-26  9:42     ` Robert Schiele

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