Re: Some generated header files are messed up on Alpine

[Bruno Haible]

Hi Tim,

> Some generated header files look like
> 
> bash-5.1# head -3 lib/uniwidth.h
> /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
>   2001-2002, 2005, 2007, 2009-2021 Free Software Foundation,
>     Inc.
> 
> This obviously won't compile.

I reproduce it on Alpine Linux 3.14, with a tarball created on a glibc
system:
  ./gnulib-tool --create-testdir --dir=../testdir uniwidth/width

The consequence is severe:
   No tarball created with the current gnulib will build on Alpine Linux!


The problem originates in the commit from 2021-12-25 that introduced
module 'gen-header'. I had tested it on several platforms [1], but Alpine
Linux was not among them.

Alpine Linux ships with many buggy/deficient utilities, and 'sed' is
apparently one of them. You find its source code here: [2].

Paul, can you think of alternate ways to define SED_HEADER_TO_AT_t ?

Bruno

[1] https://lists.gnu.org/archive/html/bug-gnulib/2021-12/msg00147.html
[2] https://git.busybox.net/busybox/tree/editors/sed.c