compilation error on Apple M1

[Damien Mattei <damien.mattei@gmail.com>]

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hello,

on Apple M1 i have this error:

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/cdefs.h:215:48:
note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
1 warning generated.
  CC       libguile_3.0_la-net_db.lo
  CC       libguile_3.0_la-socket.lo
  CC       libguile_3.0_la-regex-posix.lo
  CCLD     libguile-3.0.la
Undefined symbols for architecture arm64:
  "_iconv", referenced from:
      _mem_cd_iconveh_internal in libgnu.a(striconveh.o)
     (maybe you meant: _str_iconveh, _mem_iconveh ,
_scm_port_acquire_iconv_descriptors , _iconveh_open , _iconveh_close ,
_mem_cd_iconveh , _str_cd_iconveh , _scm_port_release_iconv_descriptors )
  "_iconv_close", referenced from:
      _iconveh_open in libgnu.a(striconveh.o)
      _iconveh_close in libgnu.a(striconveh.o)
  "_iconv_open", referenced from:
      _iconveh_open in libgnu.a(striconveh.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see
invocation)
make[3]: *** [libguile-3.0.la] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

any idea about this arm64?

regards,
Damien

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