maint: pacify GCC 14 -Wmissing-variable-declarations

[Collin Funk]

Hi,

gnulib-tool.py feels pretty quick in Coreutils. :)

I noticed some new warnings from Fedora 40's gcc 14.
These patches are pretty much copied from Pauls gnulib commit here:

    
https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=4ab87e2642d887b8eac81bb7b2d6f14f326208b2

There are still these ones:

src/sort.c:2095:21: error: no previous declaration for 'ptr_MD5_Init' 
[-Werror=missing-variable-declarations]
 2095 | # define MD5_Init (*ptr_MD5_Init)
      |                     ^~~~~~~~~~~~
src/sort.c:2096:23: error: no previous declaration for 'ptr_MD5_Update' 
[-Werror=missing-variable-declarations]
 2096 | # define MD5_Update (*ptr_MD5_Update)
      |                       ^~~~~~~~~~~~~~
src/sort.c:2097:22: error: no previous declaration for 'ptr_MD5_Final' 
[-Werror=missing-variable-declarations]
 2097 | # define MD5_Final (*ptr_MD5_Final)
      |                      ^~~~~~~~~~~~~
cc1: all warnings being treated as errors

I have a feeling the full prototypes have to be written before
including the openssl/md5.h header so:

    extern int (*ptr_MD5_Init) (MD5_CTX *);

and so on. I left them unchanged just in case anyone has a better idea.

Collin

0001-maint-pacify-GCC-14-Wmissing-variable-declarations-p.patch
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0002-maint-pacify-GCC-14-Wmissing-variable-declarations-p.patch
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