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Re: Report this to address@hidden

From: Akim Demaille
Subject: Re: Report this to address@hidden
Date: Wed, 26 Feb 2003 11:22:19 +0100
User-agent: Gnus/5.090015 (Oort Gnus v0.15) Emacs/21.2

| Hi,
| I was configuring a package just now and received a message which ask 
| me to get in touch with you.
| The package was the last version of Simple ICQ Client, release 0.8.1
| which I download from 
| http://telia.dl.sourceforge.net/sourceforge/sim-icq/sim-0.8.1.tar.gz
| The report that lead me to this mail was, during ./configure command,
| (...)
| checking X11/extensions/scrnsaver.h presence... yes
| configure: WARNING: X11/extensions/scrnsaver.h: present but cannot be 
| compiled
| configure: WARNING: X11/extensions/scrnsaver.h: check for missing 
| prerequisite headers?
| configure: WARNING: X11/extensions/scrnsaver.h: proceeding with the 
| preprocessor's result
| configure: WARNING:     ## ------------------------------------ ##
| configure: WARNING:     ## Report this to address@hidden ##
| configure: WARNING:     ## ------------------------------------ ##
| checking for X11/extensions/scrnsaver.h... yes
| (...)
| Hoping the death of the bug,
| Lucas Schnorr

Please, report this to the package maintainers, as it's a configure.ac
problem.  The Autoconf 2.57 doc says:

      Previous versions of Autoconf merely checked whether the header was
   accepted by the preprocessor.  This was changed because the old test was
   inappropriate for typical uses.  Headers are typically used to compile,
   not merely to preprocess, and the old behavior sometimes accepted
   headers that clashed at compile-time.  If you need to check whether a
   header is preprocessable, you can use `AC_PREPROC_IFELSE' (*note
   Running the Preprocessor::).
      This scheme, which improves the robustness of the test, also requires
   that you make sure that headers that must be included before the
   HEADER-FILE be part of the INCLUDES, (*note Default Includes::).  If
   looking for `bar.h', which requires that `foo.h' be included before if
   it exists, we suggest the following scheme:
   AC_CHECK_HEADERS([bar.h], [], [],
   [#if HAVE_FOO_H
   # include <foo.h>
   # endif


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