Re: building 3.2.3 but not finding arpack

[John W. Eaton]

On 19-Nov-2009, Ben Abbott wrote:

|  
| On Thursday, November 19, 2009, at 02:34PM, "John W. Eaton" <address@hidden> 
wrote:
| >On 19-Nov-2009, Ben Abbott wrote:
| >
| >| >Yours says checking for F77_FUNC(dseupd,DSEUPD), which seems odd since
| >| >the F77_FUNC macro is not used in the ARPACK test or the
| >| >OCTAVE_CHECK_LIBRARY macro from acinclude.m4
| >| >
| >| >I'm not sure why the lines in the configure script (19002 vs 28523).
| >| >What version of autoconf are you using?  I have 2.64.
| >| >
| >| >Have you run autogen.sh recently?
| >| >
| >| >jwe
| >| 
| >| I ran autogen.sh must prior to trying this build.
| >| 
| >| My autoconf is 2.63.
| >
| >Are you sure your configure script is up to date?  Does it have the
| >lines
| >
| >  save_LIBS="$LIBS"
| >  LIBS="$LAPACK_LIBS $BLAS_LIBS $FLIBS $LIBS"
| >  OCTAVE_CHECK_LIBRARY(arpack, ARPACK,
| >    [arpack not found.  The eigs function will be disabled.],
| >    [],
| >    [dseupd],
| >    [Fortran 77], [don't use the ARPACK library, disable eigs function])
| >  LIBS="$save_LIBS"
| >
| >or something else?  If so, where is the "F77_FUNC(dseupd,DSEUPD)"
| >coming from in the config.log message?  The reason I suspect an old
| >version of configure.ac is that it used to be
| >
| >  save_LIBS="$LIBS"
| >  LIBS="$LAPACK_LIBS $BLAS_LIBS $FLIBS $LIBS"
| >  OCTAVE_CHECK_LIBRARY(arpack, ARPACK,
| >    [arpack not found.  The eigs function will be disabled.],
| >    [],
| >    [F77_FUNC(dseupd,DSEUPD)],
| >    [], [don't use the ARPACK library, disable eigs function])
| >  LIBS="$save_LIBS"
| >
| >which would account for both the missing LAPACK and BLAS libs and the
| >"F77_FUNC(dseupd,DSEUPD)" name appearing in the checking message.
| >
| >If your configure.ac script really is up to date, then what are the
| >values of LAPACK_LIBS and BLAS_LIBS at this point in the configure
| >script?  If they are defined, I didn't see them in the config.log
| >output you posted.
| >
| >jwe
| 
| John, I think I there is some confusion.
| 
| I'm trying to build 3.2.3
| 
|     http://hg.tw-math.de/release-3-2-x/
| 
| There is no configure.ac file there.
| 
| As I'm having even bigger problems with ... 
| 
|     http://hg.savannah.gnu.org/hgweb/octave/
| 
| As I'm not sure if my trouble with the devevelopers sources are related to 
libtool, someother recent change to octave, or a change on my end (Mac OSX, 
Fink, etc), I thought I'd back up and try something that has always worked.

OK, sorry about the confusion.  In the 3.2.3 configure.in file, we had

  AC_ARG_WITH(arpack,
    [AS_HELP_STRING([--without-arpack],
       [don't use ARPACK, disable some sparse functionality])],
    with_arpack=$withval, with_arpack=yes)

  warn_arpack="arpack not found. This will result in a lack of the eigs 
function."
  if test "$with_arpack" = yes; then
    with_arpack=no
    AC_CHECK_LIB(arpack, F77_FUNC(dseupd,DSEUPD), [ARPACK_LIBS="-larpack"; 
with_arpack=yes], , $LAPACK_LIBS $FLIBS)
    if test "$with_arpack" = yes; then
      AC_DEFINE(HAVE_ARPACK, 1, [Define if the ARPACK library is used.])
      warn_arpack=
    fi
  fi
  if test -n "$warn_arpack"; then
    AC_MSG_WARN($warn_arpack)
  fi

but given that earlier in the script we have

  ACX_LAPACK([BLAS_LIBS="$LAPACK_LIBS $BLAS_LIBS"], [LAPACK_DIR="lapack"])

I think the AC_CHECK_LIB macro should be using "$BLAS_LIBS" instead of
"$LAPACK_LIBS".

jwe