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To: cygwin@cygwin.com
From: Andrew Schulman <schulman.andrew@epa.gov>
Subject: Re: pinfo configure problem - configure.ac (0/1)
Date: Tue, 13 May 2014 17:11:02 -0400
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Message-ID: <og25n9d8s3vmasq7njj937u737r5lrhnh4@4ax.com>
References: <05u3n9l6l8pgdeuidskcplb1930mmjtu05@4ax.com> <20140513110518.GN2436@calimero.vinschen.de> <ui14n9t5gv0sepatqtpocqqlodgcve9gi3@4ax.com> <20140513115410.GP2436@calimero.vinschen.de> <sfe4n955rf2f5571oepq2l0tffi4hr1l4b@4ax.com> <537269E3.5080509@redhat.com> <err4n99d6s6t1o1bebv4rf50p9vt7qhh2l@4ax.com> <537275F3.6070108@redhat.com>
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> On 05/13/2014 01:19 PM, Andrew Schulman wrote:
> 
> > 
> > AC_CHECK_CURSES calls AC_CHECK_CURSES_COMPILE, which is the step that
> > fails.  I've included it below.  The key step seems to be that it calls
> > AC_LINK_IFELSE, with the curses libs (-lncursesw) appended to LDFLAGS.
> 
> That's a bug in AC_CHECK_CURSES_COMPILE, and should be reported to
> whoever wrote that macro.  The autoconf manual says that LDFLAGS is for
> -L options, while LIBS is for -l options.

OK.  I think the author of pinfo is long gone, but I'll submit a patch
upstream in case someone is interested.

> > 
> > dnl
> > dnl check if the curses header we found, works
> > dnl
> > AC_DEFUN([AC_CHECK_CURSES_COMPILE], [
> > 
> >     dnl save CFLAGS and LDFLAGS and set new ones
> >     CFLAGS_OLD=$CFLAGS
> >     CFLAGS="$CFLAGS $curses_includes"
> >     LDFLAGS_OLD=$LDFLAGS
> >     LDFLAGS="$LDFLAGS $curses_libs"
> 
> and this is a blatant case of using the wrong env-var for library
> probing.  s/LDFLAGS/LIBS/ on these lines, before running autoreconf, and
> that should fix it without you manually having to pass LIBS= at the
> configure command line.

Sounds good.  Thanks again.
Andrew


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