On Mon, 8 May 2023, Arsen Arsenović wrote:
gmp-6.2.1 when built with gcc 12/13/14 (trunk as of today) combined with -O2 -flto or -O3 -flto is miscompiled, causing a few issues: 1. `make check` for gmp fails the 't-constants' test
I am definitely not a pro of aarch64 or LTO, but from a diff of configure output with/without LTO, I notice that -flto prevents GMP from understanding that RODATA can use .section .rodata, so it uses .text instead and that fails. If I add -ffat-lto-objects, then configure can detect the proper RODATA incantation and everything works.
Now it may very well be that GMP could write its assembler in a way that works both for .text and for .section .rodata, I don't know what the right fix is, but it seemed worth recording this piece of information.
-- Marc Glisse _______________________________________________ gmp-bugs mailing list gmp-bugs@gmplib.org https://gmplib.org/mailman/listinfo/gmp-bugs
