Tried -std=gnu11.
he is using Arch linux, so i guess gcc 6.1.1
Downgraded to compile this.
As long as you're compiling for AES you don't need GRS, just rip it out.
If he's compiling for AES he shouldn't even need to have non-AES version compiled at all.
Correct, but I haven't hooked it out because it was tedious work and wasn't causing any problems.
It might make the compile a little faster but that's trivial.
The entire groestl/sse2 dir can be deleted with only one linked source file to be removed from Makefile.am.
That will work for an AES compile*. To make it compile for SSE2 replace all the references to the GRS macros
in the algo files with the SPH version. In some cases the code is still there commented out.
*I should qualify that. I don't recall if I have all the GRS refs hooked out of an AES compile.
I'm considering doing that permanently as the benefit of GRS over SPH seems minimal.