From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: GMP 6.1.0 without assembly lacks =?utf-8?Q?=E2=80=98=5F=5Fgmpn=5F?=
	=?utf-8?Q?invert=5Flib=E2=80=99?= on ARM
Date: Wed, 16 Dec 2015 12:29:50 +0100
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To: gmp-bugs@gmplib.org
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Hello!

When GMP 6.1.0 is built with --host=3Dnone-unknown-linux-gnueabihf on
ARMv7 (the way GCC configures its in-tree GMP, as of GCC=C2=A04.9.3),
=E2=80=98__gmpn_invert_lib=E2=80=99 is missing from the resulting libgmp.a.

--8<---------------cut here---------------start------------->8---
$ nm /gnu/store/v6ipb4br8h6sy9zc82aj464cjcgnv7gl-gmp-6.1.0/lib/libgmp.a |gr=
ep __gmpn_invert_limb
nm: mp_clz_tab.o: no symbols
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
         U __gmpn_invert_limb
00000000 T __gmpn_invert_limb
nm: repl-vsnprintf.o: no symbols
--8<---------------cut here---------------end--------------->8---

This seems to be expected, but then it looks as though <gmp-impl.h> was
erroneously referring to it, leading to undefined references, as
reported at <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D67728>.

Ideas?

Thanks,
Ludo=E2=80=99.