tmp-lshift.s:106: Error: selected processor does not support ARM mode `vdup.32 d6,r3'

[Jeffrey Walton]

On Sun, Dec 30, 2018 at 11:12 AM Torbjörn Granlund <tg at gmplib.org> wrote:
>
> Jeffrey Walton <noloader at gmail.com> writes:
>
>   I'm working on my BananaPi. It is a Cortex-A7 with ARMv7-a.
>
>   Compile results in the following. According to Stallman I believe you
>   are supposed to add the necessary options to compile the file
>   independent of CFLAGS, and it should not need to be override-able by
>   the user because it is required. Also see
>   https://www.gnu.org/prep/standards/html_node/Command-Variables.html .
>
>    gcc -std=gnu99 -c -DHAVE_CONFIG_H -I. -I.. -D__GMP_WITHIN_GMP -I..
>   -DOPERATION_lshift -I/usr/local/include -DNDEBUG -g2 -O2 -march=native
>   -fPIC -Wa,--noexecstack tmp-lshift.s -fPIC -DPIC -o .libs/lshift.o
>   tmp-lshift.s:  gcc -std=gnu99 -c -DHAVE_CONFIG_H -I. -I..
>   -D__GMP_WITHIN_GMP -I.. -DOPERATION_rshift -I/usr/local/include
>   -DNDEBUG -g2 -O2 -march=native -fPIC -Wa,--noexecstack tmp-rshift.s
>   -fPIC -DPIC -o .libs/rshift.o
>   Assembler messages:
>   tmp-lshift.s:106: Error: selected processor does not support ARM mode
>   `vdup.32 d6,r3'
>   tmp-lshift.s:108: Error: selected processor does not support ARM mode
>   `vdup.32 d7,r3'
>   tmp-lshift.s:114: Error: selected processor does not support ARM mode
>   `vshl.u64 d18,d19,d7'
>   tmp-lshift.s:120: Error: selected processor does not support ARM mode
>   `vshl.u64 d4,d19,d6'
>   ...
>
> Are you implicitly saying that you're overriding CFLAGS (at "make" time)
> and then things fail and that it shouldn't fail?
>
> If I guess right, my recommendation is that you don't override CFLAGS in
> a build-breaking manner.
>
> If I guess wrong, please spell our what you do and what you think is
> wrong in GMP.

No, I don't override the CFLAGS. I set them like:

  CFLAGS="-g2 -O3 -DNDEBUG -march=native" ./configure ...

What is wrong is obvious. The build is broken.

Jeff