bug#58535: Build failure on old GNU/Linux system

[Paul Eggert]

On 2022-10-15 01:49, Po Lu wrote:

> I built from "make bootstrap"; here's config.log and config.h:

Both are quite wrong: config.h doesn't mention HAVE_C_ALIGNASOF, 
HAVE_C_BOOL, HAVE_C_STATIC_ASSERT, etc., not even commented out.

I suspect your autom4te.cache is busted and that this confused 
autoreconf; try removing that cache directory and doing a "make 
boostrap". (I'm surprised that 'make bootstrap' doesn't remove that 
directory first thing; it should.) If that doesn't work, try doing a 
completely fresh Git checkout, ./autogen.sh; ./configure; make.