RE: Configuring Octave

[Labitt, Bruce]

Thank you John, for your help.


You should put -L flags in LDFLAGS, like this:

  configure LDFLAGS=-L/lib64

| > ./configure --with-f77=gfortran --with-blas=/usr/lib64/libblas.so
| > --with-lapack=/usr/lib64/liblapack.so --enable-shared --enable-64
| > LIBS="-l/lib64/libpcre.so"

It is probably also better to use

  configure ... F77=gfortran

and add -L/usr/lib64 to LDFLAGS, then omit the --with-blas and
--with-lapack options.

The --enable-shared option is the default, so you don't need to
specify it.

You do realize that --enable-64 is experimental, right?  [Labitt, Bruce]
Yes. If you are using this option, you must ensure that all Fortran bits
(lapack,
blas, etc.) have been compiled to use 8-byte integers, so you will
likely need to use the -fdefault-integer-8 option for gfortran.

[Labitt, Bruce] Hmm, I don't think I did this.  What would the configure
option be on ATLAS for instance?  

        ./configure .. F77=gfortran  .... FFLAGS="-fdefault-integer-8" ?


Thanks!

So, all together, the configure command would look something like
this (split across lines for easier reading):

  configure --enable-64 LDFLAGS="-L/lib64 -L/usr/lib64"
            F77=gfortran FFLAGS="-fdefault-integer-8 -O2"

jwe