You can force a particular architecture with 

OPENBLAS_CONFIGURE="TARGET=PRESCOTT" make -p openblas
 


On Monday, January 16, 2017 at 11:54:56 AM UTC+1, tdumont wrote:
>
>
> I tried to install 7.5.1 from source on an Ubuntu 14.04 (yes, I have no 
> choice). 
> This fails when compiling openblas-0.2.19.p0, when building 
> libopenblas_banias-r0.2.19.a. 
>
> ar -ru ../libopenblas_banias-r0.2.19.a samax_k.o samin_k.o 
> ..... 
> ..... 
>
> ar: sgemm_kernel.o: No such file or directory. 
>
> In the root of sage, I then do: 
>
> find . -name "sgemm_kernel*" 
>
> and find: 
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/power/sgemm_kernel_16x8_power8.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm64/sgemm_kernel_4x4.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm64/sgemm_kernel_8x8.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm64/sgemm_kernel_16x4.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips64/sgemm_kernel_loongson3b_4x4.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips64/sgemm_kernel_loongson3a_4x4.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips64/sgemm_kernel_8x4_ps.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/mips/sgemm_kernel_8x8_msa.c
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm/sgemm_kernel_4x4_vfpv3.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/arm/sgemm_kernel_4x2_vfp.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x4_haswell.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_8x8_sandy.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_8x4_bulldozer.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x2_piledriver.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x2_bulldozer.S
>  
>
> ./local/var/tmp/sage/build/openblas-0.2.19.p0/src/kernel/x86_64/sgemm_kernel_16x4_sandy.S
>  
>
>
> which are certainly different versions of this sgemm_kernel, for 
> different architecture. 
>
> So, what happens ? 
> Should it be that the architecture of the machine is not detected ? I am 
> on a virtual machine. 
>
> Any idea ? 
>
> Yours 
>
> t.d. 
>

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