Compiling sage on opensuse 12.3

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Dear Sage support group,

I am trying to compile sage 5.8 on my newly installed opensuse 12.3. However, the install fails after checking my "build system type".

I've copy pasted the error message below. Any help would be greatly appreciated.

Best, Simon

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make[1]: Entering directory `/home/gonneman/Downloads/sage-5.8/spkg'
make base
make[2]: Entering directory `/home/gonneman/Downloads/sage-5.8/spkg'
/home/gonneman/Downloads/sage-5.8/spkg/pipestatus "base/prereq-1.1-install 2>&1" "tee -a /home/gonneman/Downloads/sage-5.8/spkg/logs/prereq-1.1.log"
Starting prerequisite check.
Machine: Linux loki.site 3.7.10-1.1-desktop #1 SMP PREEMPT Thu Feb 28 15:06:29 UTC 2013 (82d3f21) x86_64 x86_64 x86_64 GNU/Linux
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking build system type... Invalid configuration `x86_64-unknown-linux-': machine `x86_64-unknown-linux' not recognized
configure: error: /bin/sh ./config.sub x86_64-unknown-linux- failed
You do not have all of the prerequisites needed to build Sage
from source. See the errors above.
If you would like to try the build anyway (to help porting)
export the variable 'SAGE_PORT' to something non-empty.
make[2]: *** [installed/prereq-1.1] Error 1
make[2]: Leaving directory `/home/gonneman/Downloads/sage-5.8/spkg'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/gonneman/Downloads/sage-5.8/spkg'