File ‘s2/libs/s2.so’:
  Found ‘__ZNSt3__14cerrE’, possibly from ‘std::cerr’ (C++)
    Object: ‘../tools/dist/lib/libabsl_flags_config.a’
  Found ‘___assert_rtn’, possibly from ‘assert’ (C)
    Objects: ‘../tools/dist/lib/libabsl_base.a’,
      ‘../tools/dist/lib/libabsl_cord.a’,
      ‘../tools/dist/lib/libabsl_cord_internal.a’,
      ‘../tools/dist/lib/libabsl_cordz_handle.a’,
      ‘../tools/dist/lib/libabsl_cordz_info.a’,
      ‘../tools/dist/lib/libabsl_crc_cord_state.a’,
      ‘../tools/dist/lib/libabsl_crc_internal.a’,
      ‘../tools/dist/lib/libabsl_flags_internal.a’,
      ‘../tools/dist/lib/libabsl_flags_reflection.a’,
      ‘../tools/dist/lib/libabsl_graphcycles_internal.a’,
      ‘../tools/dist/lib/libabsl_int128.a’,
      ‘../tools/dist/lib/libabsl_kernel_timeout_internal.a’,
      ‘../tools/dist/lib/libabsl_log_globals.a’,
      ‘../tools/dist/lib/libabsl_log_internal_format.a’,
      ‘../tools/dist/lib/libabsl_log_internal_globals.a’,
      ‘../tools/dist/lib/libabsl_log_internal_log_sink_set.a’,
      ‘../tools/dist/lib/libabsl_log_internal_message.a’,
      ‘../tools/dist/lib/libabsl_log_internal_proto.a’,
      ‘../tools/dist/lib/libabsl_malloc_internal.a’,
      ‘../tools/dist/lib/libabsl_raw_hash_set.a’,
      ‘../tools/dist/lib/libabsl_raw_logging_internal.a’,
      ‘../tools/dist/lib/libabsl_status.a’,
      ‘../tools/dist/lib/libabsl_str_format_internal.a’,
      ‘../tools/dist/lib/libabsl_strings.a’,
      ‘../tools/dist/lib/libabsl_strings_internal.a’,
      ‘../tools/dist/lib/libabsl_symbolize.a’,
      ‘../tools/dist/lib/libabsl_synchronization.a’,
      ‘../tools/dist/lib/libabsl_time.a’,
      ‘../tools/dist/lib/libabsl_time_zone.a’
  Found ‘___stderrp’, possibly from ‘stderr’ (C)
    Objects: ‘../tools/dist/lib/libabsl_log_internal_globals.a’,
      ‘../tools/dist/lib/libabsl_str_format_internal.a’
  Found ‘__exit’, possibly from ‘_exit’ (C), ‘_Exit’ (C)
    Object: ‘../tools/dist/lib/libabsl_log_internal_message.a’
  Found ‘_abort’, possibly from ‘abort’ (C)
    Objects: ‘../tools/dist/lib/libabsl_log_internal_message.a’,
      ‘../tools/dist/lib/libabsl_raw_logging_internal.a’
  Found ‘_exit’, possibly from ‘exit’ (C)
    Object: ‘../tools/dist/lib/libabsl_flags_reflection.a’

Compiled code should not call entry points which might terminate R nor
write to stdout/stderr instead of to the console, nor use Fortran I/O
nor system RNGs nor [v]sprintf.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.