I think Keshav ran into the same problem and it was because vbox wasn't 
reporting the correct cpu parameters or something like that.

On Friday, May 18, 2012 1:00:54 PM UTC+8, William wrote:
>
> Hi, 
>
> I know something like this has been reported, but I can't figure out 
> where.   I am using Ubuntu 12.04 in Virtualbox on my Mac, and I can't 
> build Sage because of MPIR.  Which ticket?  What's the workaround? 
> This will probably impact me a lot, since I use virtual machines quite 
> a bit... 
>
> libtool: compile:  ../strip_fPIC.sh ../yasm/yasm -I .. -f elf64 
> add_n.as  -fPIC -DPIC -o .libs/add_n.o 
> ../yasm/yasm -I .. -f elf64 add_n.as -D PIC -o .libs/add_n.o 
> ../libtool: line 1133: 20873 Illegal instruction     (core dumped) 
> ../strip_fPIC.sh ../yasm/yasm -I .. -f elf64 add_n.as -fPIC -DPIC -o 
> .libs/add_n.o 
> make[4]: *** [add_n.lo] Error 1 
> make[4]: Leaving directory 
> `/home/wstein/sage/build/sage-5.0/spkg/build/mpir-2.4.0.p3/src/mpn' 
> make[3]: *** [all-recursive] Error 1 
> make[3]: Leaving directory 
> `/home/wstein/sage/build/sage-5.0/spkg/build/mpir-2.4.0.p3/src' 
> make[2]: *** [all] Error 2 
> make[2]: Leaving directory 
> `/home/wstein/sage/build/sage-5.0/spkg/build/mpir-2.4.0.p3/src' 
> Error building MPIR. 
>
> real        1m36.861s 
> user        0m35.050s 
> sys        0m15.297s 
> ************************************************************************ 
> Error installing package mpir-2.4.0.p3 
>
>
> -- 
> William Stein 
> Professor of Mathematics 
> University of Washington 
> http://wstein.org 
>

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