[Bug bootstrap/91034] In tree build of gmp fails on Raspberry Pi4 (ARM Cortex A72) with `mls r1,r4,r8,r11' not supported in ARM mode

[andrewm.roberts at sky dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91034

--- Comment #13 from Andrew Roberts <andrewm.roberts at sky dot com> ---
Just tried --enable-assembly=no with the standalone build of gmp
and this does seem to work as advertised. Everything symlinked to .c rather
than .asm files, and no .asm or .s files built at all.

Building gmp standalone with the broken raspbian compiler and setting
CFLAGS="-v" works when configuring using --enable-assembly=no, but fails
without it. 

Long term this is probably the best way forward...