Elias wrote:
Hi Bill,
the ./config.guess gives
sandybridge-unknown-linux-gnu

the cpuinfo is
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 42
model name      : Intel(R) Core(TM) i5-2557M CPU @ 1.70GHz
stepping        : 7
cpu MHz         : 1688.048
cache size      : 6144 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm
constant_tsc up rep_good nopl pni monitor ssse3 lahf_lm
bogomips        : 3376.09
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:


and the first lines of config.log are (I am sorry, I can not attach a file)

   $ ./configure --prefix=/home/elias/ --enable-cxx=yes
--enable-gmpcompat=yes CC=gcc-4.6 CXX=g++-4.6

## --------- ##
## Platform. ##
## --------- ##

hostname = aeolus-lu64
uname -m = x86_64
uname -r = 3.5.0-18-generic
uname -s = Linux
uname -v = #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012

/usr/bin/uname -p = unknown
/bin/uname -X     = unknown

/bin/arch              = unknown
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /usr/lib/lightdm/lightdm
PATH: /usr/local/sbin
PATH: /usr/local/bin


-- Elias


So what does

$ gcc-4.6 -march=native -v -c -x c /dev/null -o /dev/null 2>&1 | grep -w cc1

give (especially the '-m...' parameters passed to 'cc1'), in contrast to what MPIR used (shown by 'configure', the lines after 'using ABI="...") ?


By the way, Ubuntu's "GCC 4.6" is presumably Ubuntu's GCC 4.6.3, which is quite different to FSF's GCC 4.6.3, i.e., besides some other changes contains parts from the 4.7 branch.


-leif


On Thursday, November 15, 2012 4:13:40 PM UTC+1, Bill Hart wrote:

    Hi Elias,

    this might be to do with the virtual box, as we've tested on a large
    number of real machines and not encountered this yet.

    You may have to tell mpir's configure what the machine actually is by
    passing a --build=whatever

    Can you tell us what ./config.guess says on your system. Also, could
    you attach a copy of the config.log.

    Can you also attach the output of cat /proc/cpuinfo

    Thanks,

    Bill.

    On 15 November 2012 14:13, Elias <elias.ts...@gmail.com
    <javascript:>> wrote:
     > Dear developers,
     > when I do a make check with mpir 2.6.0, I get the following error
     > /bin/bash: line 1: 17730 Illegal instruction     (core dumped)
    "$tst" >
     > t-get_d.log-t 2>&1
     > I am running lubuntu 12.10 using a virtual box in mac os lion.
     > The compiler is gcc 4.6
     > Probably this causes problem in the installation of flint, but I
    will send
     > another email for this.
     >
     > Can you please help me with this?
     >
     > best,
     >
     > -- Elias
     >
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