Issues with compiler flags in gfortran

[Chris Jones]

Hi,

What exactly version (and variants) of cctools do you have installed ?

Perhaps try force removing it, then reinstall, to make sure you are using the current default variants. 

Chris

> On 21 Jan 2019, at 2:47 pm, Nicolas Pavillon <nicos at macports.org> wrote:
> 
> Hi, 
> 
> I stumbled on some issues with the fortran compiler that I cannot really understand. They might be linked with other topics discussed recently about cctools, but it still seems somewhat different. 
> 
> This happens with the port OpenBLAS, where the compilation fails when flags to compile AVX instructions yield errors during compilation, as described in the following tickets: 
> https://trac.macports.org/ticket/57912
> https://github.com/xianyi/OpenBLAS/issues/1951
> 
> However, when I tried even more basic flags such as -march=native, compilation also fails with errors such as 
> /var/folders/x8/q7j02h4d661_p7cjh42_jh380000gn/T//ccqkNy6A.s:103:no such instruction: `vxorps %xmm0, %xmm0,%xmm0'
> 
> I then tried with another gfortran compiler outside of macports, and it could compile without any issue if I remove macports’ prefix from the path, which seems to indicate that the issue is coming from the assembler in macports.
> 
> My best guess is that as in cctools is too old, but I am not sure about that. Also, if it is correct, I wonder how this could be solved. Any ideas?
> 
> Cheers,
> 
> Nicolas 
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