Hi,

I just verified that my home Mac desktop is 10.6.1 (and current for
all Mac updates).   I need to kill all of my jobs to update my office
machine, so I deferred this step at work.  However this is not the
source of the problem.

Instead it seems that the problem is due to running MacOSX in
64-bit mode.  According to the application 32- or 64-bit Kernel
Startup Mode Selector, 64-bit mode is not supported by my
laptop, whereas I set the two desktops to 64-bit mode.  In the
singular configure file, I find:

liki10:/usr/local/sage-4.2/spkg/build/singular-3-1-0-4-20090818.p1/src
$ ./configure
loading cache ./config.cache
checking uname for singular... unknown
configure: error: Unknown architecture: Check singuname.sh

Running singuname.sh I find:

liki10:/usr/local/sage-4.2/spkg/build/singular-3-1-0-4-20090818.p1/src
$ ./singuname.sh
x86_64-Unknown

On my 32-bit mode laptop it reports "ix86Mac-darwin".  So it seems
that the
singuname.sh file is not able to correctly parse the output of `uname -
a` in
64-bit mode:

Darwin liki10 10.0.0 Darwin Kernel Version 10.0.0: Fri Jul 31 22:46:25
PDT 2009; root:xnu-1456.1.25~1/RELEASE_X86_64 x86_64

Compare this to the 32-bit output:

Darwin iml26 10.0.0 Darwin Kernel Version 10.0.0: Fri Jul 31 22:47:34
PDT 2009; root:xnu-1456.1.25~1/RELEASE_I386 i386

So I think it should be easy to patch singuname.sh to get past the
configure error.

--David
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