在macOS上编译libmp3lame报错，3.100版本
Undefined symbols for architecture x86_64:
"_lame_init_old", referenced from:
-exported_symbol[s_list] command line option
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [libmp3lame.la] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2解决办法
删除 include/libmp3lame.sym 中的lame_init_old