Thread: sacio.a for intel mac

Just to add, I don't know of any other gnu fortran compiler for the
intel mac. I don't think a g77 exists yet. I have managed getting c
and fortran programs to merge though with gfortran and gcc on the
intel mac. Sorry I can't help much more than this though.

kris

On Aug 18, 2006, at 2:03 PM, Georgia Cua wrote:

Dear Arthur,

Thanks for your prompt reply.

I am using the sac binaries that were in 05Mar01.sac.bin.darwin.tar.

Yes, I had seen from the archives that there were some issues with
fortran and gcc. I am the following versions of gfortran and gcc

[guardia:/Applications] georgia% gfortran -v
Using built-in specs.
Target: i386-apple-darwin8.7.1
Configured with: ../gcc-4.2-20060805/configure
--enable-languages=c++,fortran,java
Thread model: posix
gcc version 4.2.0 20060805 (experimental)

[guardia:~/Research/PAGER2006_2] georgia% gcc -v
Using built-in specs.
Target: i686-apple-darwin8
Configured with: /private/var/tmp/gcc/gcc-5250.obj~20/src/configure
--disable-checking -enable-werror --prefix=/usr --mandir=/share/man
--enable-languages=c,objc,c++,obj-c++
--program-transform-name=/^[cg][^.-]*$/s/$/-4.0/
--with-gxx-include-dir=/include/c++/4.0.0
--build=powerpc-apple-darwin8 --with-arch=pentium-m
--with-tune=prescott --program-prefix= --host=i686-apple-darwin8
--target=i686-apple-darwin8
Thread model: posix
gcc version 4.0.1 (Apple Computer, Inc. build 5250)


Thank you,
Georgia

On Aug 18, 2006, at 9:35 PM, Arthur Snoke wrote:

IRIS is running some tests on building/running sac on an intel
machine, as the normal testers do not have access to one.

A couple of questions:

1. The sac distribution you cite indicates that it is the original
binary code for sac 100.0. That was not built on an intel mac, so I
am surprised you could get it to run. Please clarify exactly what
sac binary you are running and what platform.

2. As I think we have commented to the list before (see archives),
meshing Fortran and gcc is not simple. What version of Fortran are
you running? The binary with a name like the one you cite was built
using gcc 3. With non-intel macs, the default on 10.4 is gcc 4.0 or
4.0.1. These are not compatible with g77 built in conjunction with
gcc 3. Please clarify the compilers you are using.

Arthur Snoke

On Fri, 18 Aug 2006, Georgia Cua wrote:

Dear sac-help,

I am using an intel mac, and would like to use the input/output
libraries in sacio.a.

However, when I try to compile my fortran code, I get some messages

/usr/bin/ld: warning /Applications/sac/lib/sacio.a archive's
cputype (18, architecture ppc) does not match cputype (7) for
specified -arch flag: i386 (can't load from it)
/usr/bin/ld: Undefined symbols:
_rsac1_
collect2: ld returned 1 exit status

Is there a version of sacio.a that works with the intel mac?

The sac version I am using is:

SEISMIC ANALYSIS CODE [03/01/2005 (Version 100.00)]
Copyright 1995 Regents of the University of California

Thank you,
Georgia Cua
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-----------------------------
Dr. Georgia Cua
Swiss Seismological Service
Institute of Geophysics
ETH Hoenggerberg HPP P
CH-8093 Zurich
Switzerland

Tel:  +41-044-633-7574   
Fax: +41-044-633-1065   

georgia.cua<at>sed.ethz.ch
-----------------------------



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Dr. Kristoffer T. Walker http://sail.ucsd.edu/~walker
Green Scholar email: walker<at>ucsd.edu
IGPP, Scripps MC 0225 phone: 858-534-0126
University of California, San Diego fax: 858-534-9873
La Jolla, CA 92093-0225 room: 2201 Revelle Lab
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Georgia,

Before I get to your question/situation, please share where you got
your gfortran compiler from. I am told that this version is the
first one that has "acceptably fast" I/O.

1. I am told that applications written for a PPC can run on the
Intel mac. The translation is done using "Rosetta." Applications
will probably run much slower, but they will run. Hence you are
able to run the PPC compiled version of sac 100.0 from March 2005
on your intel mac.

Version 100.1 that came out in July 2005 has command-line editing
using the libedit package. Libedit has at least one dynamically
loaded library. It would be interesting to see if that version,
compiled on a PPC, could run on the intel mac. That version can be
gotten from IRIS by the same procedure as you got 100.0.

2. I do not think the emulation capabilities goes to the extent of
libraries, like sacio.a. That is, sacio.a built on a PPC cannot be
used to build programs on an intel mac. In addition to the endian
difference, one has to use a Fortran compiler configured with a gcc
3 compiler, as that binary version of sac 100.0 was built using gcc
3. George Hellfrich sent a link to a URL that should allow you to
build a g77 that is configured with gcc 3, but that will not help
you until you get a sacio.a library built on an intel mac.

3. An earlier posting reported failure in an attempt to build sac
from sources on an intel mac. Researchers at IRIS are looking into
this.

4. I have a PPC with 10.4.7. I am using gcc 3.3 and g77
configured with gcc 3.4.6. I am told that g77 will not be
supported in the future so that one will eventually need to go to
gfortran. Hence my question above about the source of gfortran
configured with gcc 4.2 (experimental). I think there is no
getting around the fact that one needs a sacio.a built with the
same level of gcc (3 or 4) as your Fortran compiler -- and with the
same endian.

Not sure how much help this is. If you or anyone else see flaws
with what I have written, please share.

Arthur