configure changes breaks autogen.sh with autoconf 2.59

[John W. Eaton]

On 16-Nov-2004, David Bateman <address@hidden> wrote:

| I get the following messages with the CVS and using autogen.sh
| 
| calling autoconf and autoheader...
| /home/dbateman/octave/cvs/octave
| configure.in:504: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| autoconf/lang.m4:224: AC_LANG_SOURCE is expanded from...
| autoconf/lang.m4:234: AC_LANG_PROGRAM is expanded from...
| autoconf/general.m4:2215: AC_LINK_IFELSE is expanded from...
| autoconf/general.m4:2223: AC_TRY_LINK is expanded from...
| autoconf/general.m4:1799: AC_CACHE_VAL is expanded from...
| aclocal.m4:414: OCTAVE_F77_FLAG is expanded from...
| configure.in:504: the top level
| configure.in:510: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| configure.in:510: the top level
| configure.in:512: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| configure.in:512: the top level
| configure.in:513: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| configure.in:513: the top level
| configure.in:504: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| autoconf/lang.m4:224: AC_LANG_SOURCE is expanded from...
| autoconf/lang.m4:234: AC_LANG_PROGRAM is expanded from...
| autoconf/general.m4:2215: AC_LINK_IFELSE is expanded from...
| autoconf/general.m4:2223: AC_TRY_LINK is expanded from...
| autoconf/general.m4:1799: AC_CACHE_VAL is expanded from...
| aclocal.m4:414: OCTAVE_F77_FLAG is expanded from...
| configure.in:504: the top level
| configure.in:510: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| configure.in:510: the top level
| configure.in:512: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| configure.in:512: the top level
| configure.in:513: warning: AC_LANG_PROGRAM(Fortran 77): ignoring PROLOGUE: []
| configure.in:513: the top level
| /home/dbateman/octave/cvs/octave/glob
| /home/dbateman/octave/cvs/octave/scripts
| skipping autoheader in ./scripts
| done
| 
| Not knowing much about recent changes in configure.in, maybe someone else
| knows to right fix for this....

These are just warnings and not fatal.  It looks like a bug in
autoconf (still present in the current CVS version).  I posted the
following to the autoconf list.  So far, no solution.

  Subject: warning from AC_LANG_PROGRAM(Fortran 77)
  From: "John W. Eaton" <address@hidden>
  To: address@hidden
  Date: Thu, 11 Nov 2004 16:00:29 -0500
  Message-ID: <address@hidden>

  I'm using Autoconf 2.59:

  devzero:450> autoconf --version
  autoconf (GNU Autoconf) 2.59
  Written by David J. MacKenzie and Akim Demaille.

  Copyright (C) 2003 Free Software Foundation, Inc.
  This is free software; see the source for copying conditions.  There is NO
  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  Given the following input file

  AC_INIT
  AC_PREREQ(2.50)
  AC_LANG_PUSH(Fortran 77)
  AC_TRY_LINK([],[],[])
  AC_LANG_POP(Fortran 77)

  Autoconf emits the following warning:

  devzero:449> autoconf foo.in > foo.out
  foo.in:4: warning: AC_LANG_PROGRAM(Fortran): ignoring PROLOGUE: []
  autoconf/lang.m4:224: AC_LANG_SOURCE is expanded from...
  autoconf/lang.m4:234: AC_LANG_PROGRAM is expanded from...
  autoconf/general.m4:2215: AC_LINK_IFELSE is expanded from...
  autoconf/general.m4:2223: AC_TRY_LINK is expanded from...
  foo.in:4: the top level

  The INCLUDES argument ($1) of AC_TRY_LINK is empty, so I don't think I
  should see a warning about ignoring that as there is nothing to
  ignore.  Is there any way to avoid this warning?

  Thanks,

  jwe

  -- 
  www.octave.org | www.che.wisc.edu/~jwe | Peace would shock and awe me.


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