Prebuilt gems doesn't work under Alpine Linux

[x-yuri]

What version of protobuf and what language are you using?
Version: v3.15.6
Language: Ruby

What operating system (Linux, Windows, ...) and version?
Alpine Linux

What runtime / compiler are you using (e.g., python version or gcc version)
Ruby 2.7.2

What did you do?
a.sh:

#!/bin/sh -eux
gem install google-protobuf
for f in `find /usr/local/bundle/gems -name "*.so"`; do
    ldd "$f" || true
done

$ chmod u+x a.sh
$ docker run --rm -itv $PWD/a.sh:/a.sh ruby:2.7.2-alpine ./a.sh
...
+ ldd /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so
	/lib/ld-musl-x86_64.so.1 (0x7f0fda5f9000)
	libm.so.6 => /lib/ld-musl-x86_64.so.1 (0x7f0fda5f9000)
	libc.so.6 => /lib/ld-musl-x86_64.so.1 (0x7f0fda5f9000)
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ll2inum: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_gc_writebarrier_unprotect: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_concat: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_error_frozen_object: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_raise: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_extend_object: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_block_proc: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_id2name: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_funcall_with_block: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_data_typed_object_wrap: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_require: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_num2dbl: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ary_entry: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_enc_str_coderange: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_define_module_id: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_range_beg_len: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_enc_associate: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_eval_string: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: ruby_vsnprintf: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_num2int: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_get_alloc_func: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_new_static: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_num2uint: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_hash_aref: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_inspect: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_block_call: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: ruby_xfree: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ascii8bit_encoding: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_obj_encoding: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ary_new: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ary_new_from_args: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_num2ll: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_check_typeddata: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_class_new_instance: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_cat_cstr: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ary_new_capa: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ivar_get: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_equal: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_keyword_given_p: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_intern: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_funcallv: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_utf8_encoding: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_hash_lookup: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_append: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_hash_aset: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: ruby_xmalloc: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_check_type: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_yield: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_define_class_id: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_hash_foreach: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_hash_lookup2: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_gc_mark: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_class2name: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_new_cstr: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_num2long: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_obj_is_kind_of: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_error_arity: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_plus: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_const_get: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_id2str: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_freeze_singleton_class: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_free_tmp_buffer: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_enc_from_encoding: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_encode: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_gc_register_address: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_float_new: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ary_push: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_id2sym: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ary_detransient: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_sym2id: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_time_timespec: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ull2inum: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_include_module: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_empty_keyword_given_p: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_define_alloc_func: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_define_module: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_str_new: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_define_module_under: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_warn: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_yield_values2: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_define_class_under: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_intern2: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_define_const: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_call_super: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_ivar_set: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_fix2int: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_hash_new: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cObject: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cFloat: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cTime: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cNumeric: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cString: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cNilClass: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_eEncodingError: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_eRangeError: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cTrueClass: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cFalseClass: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_eRuntimeError: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cInteger: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_mEnumerable: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_eArgError: symbol not found
Error relocating /usr/local/bundle/gems/google-protobuf-3.15.6-x86_64-linux/lib/google/2.7/protobuf_c.so: rb_cSymbol: symbol not found

What did you expect to see
No errors

What did you see instead?
Errors

Workaround

gem install --platform ruby google-protobuf

[x-yuri]

Relocation errors can be ignored.