私の elixir プロジェクトでは、NIF を持つ crc を間接的に使用しています。それらはコンパイルされません。リンク先にライブラリが表示されないようです。
rtp_to_hls ● rm -rf deps/ _build/ && mix deps.get && mix compile
==> crc
C checksum_xor.c
C crc_8.c
C crc_algorithm.c
C crc_model.c
C crc_nif.c
C crc_resource.c
C xnif_slice.c
LD crc_nif.so
Undefined symbols for architecture x86_64:
"_enif_alloc", referenced from:
_crc_model_load in crc_model.o
_kh_resize_crc_stubs in crc_model.o
_kh_resize_crc_models in crc_model.o
_crc_nif_debug_table_1 in crc_nif.o
"_enif_alloc_resource", referenced from:
_crc_resource_create in crc_resource.o
_crc_resource_clone in crc_resource.o
_xnif_slice_create in xnif_slice.o
_xnif_slice_create_x in xnif_slice.o
"_enif_consume_timeslice", referenced from:
_xnif_slice_trap in xnif_slice.o
"_enif_free", referenced from:
_crc_model_load in crc_model.o
_crc_model_unload in crc_model.o
_kh_resize_crc_stubs in crc_model.o
_kh_resize_crc_models in crc_model.o
_crc_nif_debug_table_1 in crc_nif.o
"_enif_get_map_size", referenced from:
_crc_init in crc_nif.o
_crc_init_map_extend in crc_nif.o
"_enif_get_map_value", referenced from:
_crc_init in crc_nif.o
_crc_init_map_extend in crc_nif.o
"_enif_get_resource", referenced from:
_crc_resource_get in crc_resource.o
_xnif_slice_trap in xnif_slice.o
"_enif_get_tuple", referenced from:
_crc_init_tuple in crc_nif.o
"_enif_get_uint", referenced from:
_crc_nif_checksum_xor_1_work in checksum_xor.o
_crc_nif_checksum_xor_1_done in checksum_xor.o
_crc_nif_crc_8_2 in crc_8.o
_crc_nif_crc_8_init_1 in crc_8.o
_crc_nif_crc_8_update_2 in crc_8.o
_crc_nif_crc_8_final_1 in crc_8.o
_crc_nif_crc_8_2_work in crc_8.o
...
"_enif_get_ulong", referenced from:
_crc_init_tuple in crc_nif.o
"_enif_inspect_binary", referenced from:
_crc_nif_checksum_xor_1 in checksum_xor.o
_crc_nif_checksum_xor_1_work in checksum_xor.o
_crc_nif_crc_8_2 in crc_8.o
_crc_nif_crc_8_update_2 in crc_8.o
_crc_nif_crc_8_2_work in crc_8.o
_crc_nif_crc_8_update_2_work in crc_8.o
"_enif_inspect_iolist_as_binary", referenced from:
_crc_nif_crc_fast_2 in crc_nif.o
_crc_nif_crc_fast_update_2 in crc_nif.o
_crc_nif_crc_slow_2 in crc_nif.o
_crc_nif_crc_slow_update_2 in crc_nif.o
_crc_nif_crc_fast_2_work in crc_nif.o
_crc_nif_crc_fast_update_2_work in crc_nif.o
_crc_nif_crc_slow_2_work in crc_nif.o
...
"_enif_is_atom", referenced from:
_crc_init in crc_nif.o
"_enif_is_map", referenced from:
_crc_init in crc_nif.o
"_enif_is_ref", referenced from:
_crc_init in crc_nif.o
"_enif_is_tuple", referenced from:
_crc_init in crc_nif.o
"_enif_keep_resource", referenced from:
_crc_resource_create in crc_resource.o
_crc_resource_clone in crc_resource.o
"_enif_make_atom", referenced from:
_crc_model_load in crc_model.o
_crc_model_list in crc_model.o
_crc_nif_make_atoms in crc_nif.o
"_enif_make_badarg", referenced from:
_crc_nif_checksum_xor_1 in checksum_xor.o
_crc_nif_checksum_xor_1_done in checksum_xor.o
_crc_nif_crc_8_2 in crc_8.o
_crc_nif_crc_8_init_1 in crc_8.o
_crc_nif_crc_8_update_2 in crc_8.o
_crc_nif_crc_8_final_1 in crc_8.o
_crc_nif_crc_8_2_done in crc_8.o
...
"_enif_make_list_from_array", referenced from:
_crc_nif_debug_table_1 in crc_nif.o
"_enif_make_map_put", referenced from:
_crc_model_list in crc_model.o
_crc_nif_crc_info_1 in crc_nif.o
"_enif_make_new_binary", referenced from:
_crc_model_list in crc_model.o
_crc_nif_crc_info_1 in crc_nif.o
"_enif_make_new_map", referenced from:
_crc_model_list in crc_model.o
_crc_nif_crc_info_1 in crc_nif.o
"_enif_make_resource", referenced from:
_crc_nif_crc_fast_2 in crc_nif.o
_crc_nif_crc_fast_init_1 in crc_nif.o
_crc_nif_crc_fast_update_2 in crc_nif.o
_crc_nif_crc_slow_2 in crc_nif.o
_crc_nif_crc_slow_init_1 in crc_nif.o
_crc_nif_crc_slow_update_2 in crc_nif.o
_xnif_slice_schedule in xnif_slice.o
...
"_enif_make_tuple", referenced from:
_crc_nif_debug_table_1 in crc_nif.o
_crc_init in crc_nif.o
_crc_init_map_extend in crc_nif.o
"_enif_make_uint", referenced from:
_crc_nif_checksum_xor_1 in checksum_xor.o
_crc_nif_checksum_xor_1_work in checksum_xor.o
_crc_nif_checksum_xor_1_done in checksum_xor.o
_crc_nif_crc_8_2 in crc_8.o
_crc_nif_crc_8_init_1 in crc_8.o
_crc_nif_crc_8_update_2 in crc_8.o
_crc_nif_crc_8_final_1 in crc_8.o
...
"_enif_make_ulong", referenced from:
_crc_nif_debug_table_1 in crc_nif.o
_crc_nif_crc_fast_2 in crc_nif.o
_crc_nif_crc_fast_final_1 in crc_nif.o
_crc_nif_crc_slow_2 in crc_nif.o
_crc_nif_crc_slow_final_1 in crc_nif.o
_crc_nif_crc_info_1 in crc_nif.o
_crc_nif_crc_residue_1 in crc_nif.o
...
"_enif_monotonic_time", referenced from:
_xnif_slice_trap in xnif_slice.o
"_enif_open_resource_type", referenced from:
_crc_resource_load in crc_resource.o
_crc_resource_upgrade in crc_resource.o
_xnif_slice_load in xnif_slice.o
_xnif_slice_upgrade in xnif_slice.o
"_enif_realloc", referenced from:
_kh_resize_crc_stubs in crc_model.o
_kh_resize_crc_models in crc_model.o
"_enif_release_resource", referenced from:
_crc_nif_crc_fast_2 in crc_nif.o
_crc_nif_crc_fast_init_1 in crc_nif.o
_crc_nif_crc_fast_update_2 in crc_nif.o
_crc_nif_crc_slow_2 in crc_nif.o
_crc_nif_crc_slow_init_1 in crc_nif.o
_crc_nif_crc_slow_update_2 in crc_nif.o
_crc_nif_crc_residue_1 in crc_nif.o
...
"_enif_schedule_nif", referenced from:
_xnif_slice_schedule in xnif_slice.o
_xnif_slice_trap in xnif_slice.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/Users/hajtojakub/Projects/membrane-demo/rtp_to_hls/_build/dev/lib/crc/priv/crc_nif.so] Error 1
could not compile dependency :crc, "mix compile" failed. You can recompile this dependency with "mix deps.compile crc", update it with "mix deps.update crc" or clean it with "mix deps.clean crc"
==> membrane_demo_rtp_to_hls
** (Mix) Could not compile with "make" (exit status: 2).
You need to have gcc and make installed. Try running the
commands "gcc --version" and / or "make --version". If these programs
are not installed, you will be prompted to install them.
私はenvをチェックし始めました：
rtp_to_hls ● gcc --version
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 11.0.3 (clang-1103.0.32.62)
Target: x86_64-apple-darwin19.5.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin
rtp_to_hls ● make --version
GNU Make 3.81
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
This program built for i386-apple-darwin11.3.0
これは構成の問題である可能性が最も高いです。ただし、最小限の再現可能なプロジェクトを投稿します