[bug #66541] failed to build with macOS 15

[Rui Chen]

URL:
  <https://savannah.gnu.org/bugs/?66541>

                 Summary: failed to build with macOS 15
                   Group: GNU gettext
               Submitter: chenrui
               Submitted: Sun 08 Dec 2024 04:18:19 AM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any


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Follow-up Comments:


-------------------------------------------------------
Date: Sun 08 Dec 2024 04:18:19 AM UTC By: Rui Chen <chenrui>
While building the latest release, 0.23, seeing some build failure as:

```
checking for iconv... yes
checking for working iconv... no
checking whether iconv is compatible with its POSIX signature... yes
```

and 

```
iconv-ostream.c:297:3: error: incompatible function pointer types initializing
'void (*)(iconv_ostream_t, ostream_flush_scope_t)' (aka 'void (*)(struct
any_ostream_representation *, ostream_flush_scope_t)') with an expression of
type 'void (iconv_ostream_t)' (aka 'void (struct any_ostream_representation
*)') [-Wincompatible-function-pointer-types]
  297 |   iconv_ostream__flush,
      |   ^~~~~~~~~~~~~~~~~~~~
1 error generated.
```

for macos 15 build. This looks like the similar issue as
https://savannah.gnu.org/bugs/?65686, and it builds out fine with specifying
`ENV["am_cv_func_iconv_works"] = "yes"` environment.









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