Re: Compile Octave to use ACML on RHEL 6.1 x86_64 with GCC 4.4.5?

[Christopher Lott]

Many thanks to Ed Meyer for telling me to look into the config.log file. 
That let me see my problem before was from ld:

   /usr/bin/ld: cannot find -lacml_mp

This bit of output does NOT appear on the console when config runs, and 
I didn't know how to get this detail. That told me the link step was 
failing for a silly reason, not some tricky library incompatibility.

So with this help I was able to get ACML 4.4 and Octave 3.6.2 to play 
together nicely on RHEL 6.1, just had to avoid the errors between the 
keyboard and the chair :-)

My base configuration is RHEL 6.1 installed as a "software development 
workstation" (Anaconda adds lots of extra packages).  It has readline 
and curl.  The system has this gcc/gfortran suite:

    gcc (GCC) 4.4.5 20110214 (Red Hat 4.4.5-6)

I downloaded ACML 4.4 and let it install itself in /opt (needed root 
privs here).  I set a shell variable:

$ export LD_LIBRARY_PATH=/opt/acml4.4.0/gfortran64_mp_int64/lib

I did *not* change /etc/ld.so.conf and I did *not* add a file to 
/etc/ld.so.conf.d to tell the system to search the /opt/acml-4.4 area 
automatically.  Then checked the dependencies of the multi-processing 
ACML shared libs:

$ ldd /opt/acml4.4.0/gfortran64_mp_int64/lib/libacml_mv.so
        linux-vdso.so.1 =>  (0x00007fffaabff000)
        libgomp.so.1 => /usr/lib64/libgomp.so.1 (0x00007f6a39441000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f6a39223000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f6a38e92000)
        librt.so.1 => /lib64/librt.so.1 (0x00007f6a38c8a000)
        /lib64/ld-linux-x86-64.so.2 (0x0000003cf2400000)

$ ldd /opt/acml4.4.0/gfortran64_mp_int64/lib/libacml_mp.so
        linux-vdso.so.1 =>  (0x00007fff076ca000)
        librt.so.1 => /lib64/librt.so.1 (0x00007f5b3d1ef000)
        libacml_mv.so => 
/opt/acml4.4.0/gfortran64_mp_int64/lib/libacml_mv.so (0x00007f5b3cfa0000)
        libgfortran.so.3 => /usr/lib64/libgfortran.so.3 
(0x00007f5b3ccae000)
        libm.so.6 => /lib64/libm.so.6 (0x00007f5b3ca2a000)
        libgomp.so.1 => /usr/lib64/libgomp.so.1 (0x00007f5b3c81c000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f5b3c5ff000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f5b3c26e000)
        /lib64/ld-linux-x86-64.so.2 (0x0000003cf2400000)

That output told me every dependency is satisfied.  The system has PCRE 
but not PCRE devel (headers) required by Octave, so installed it (need 
root privs again):

  sudo yum install pcre-devel

I downloaded Octave 3.6.2, unpacked.  Configured Octave with this 
incantation:

   ./configure  --enable-64 --disable-docs --with-blas=acml_mp 
--with-lapack=acml_mp  \

    LDFLAGS="-L/opt/acml4.4.0/gfortran64_mp_int64/lib"

And configure ran to completion!  The octave make built a binary 
successfully (altho blew up when it tried to run makeinfo, grr). 
Octave launches!

If I unset LD_LIBRARY_PATH then octave does not start (no surprise there).