opt/WidevineCdm/chromium/_platform_specific/linux_arm64 $ readelf -d libwidevinecdm.so

Dynamic section at offset 0x90a618 contains 34 entries:
  Tag        Type                         Name/Value
 0x0000000000000001 (NEEDED)             Shared library: [libdl.so.2]
 0x0000000000000001 (NEEDED)             Shared library: [libpthread.so.0]
 0x0000000000000001 (NEEDED)             Shared library: [libnspr4.so]
 0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [ld-linux-aarch64.so.1]
 0x000000000000000e (SONAME)             Library soname: [libwidevinecdm.so]
 0x000000000000001e (FLAGS)              BIND_NOW
 0x000000006ffffffb (FLAGS_1)            Flags: NOW
 0x0000000000000007 (RELA)               0x1dd8
 0x0000000000000008 (RELASZ)             360 (bytes)
 0x0000000000000009 (RELAENT)            24 (bytes)
 0x0000000000000024 (RELR)               0x1f40
 0x0000000000000023 (RELRSZ)             536 (bytes)
 0x0000000000000025 (RELRENT)            8 (bytes)
 0x0000000000000017 (JMPREL)             0x2158
 0x0000000000000002 (PLTRELSZ)           3120 (bytes)
 0x0000000000000003 (PLTGOT)             0x90c368
 0x0000000000000014 (PLTREL)             RELA
 0x0000000000000006 (SYMTAB)             0x298
 0x000000000000000b (SYMENT)             24 (bytes)
 0x0000000000000005 (STRTAB)             0x162c
 0x000000000000000a (STRSZ)              1961 (bytes)
 0x0000000000000004 (HASH)               0x11b4
 0x0000000000000019 (INIT_ARRAY)         0x9052a8
 0x000000000000001b (INIT_ARRAYSZ)       48 (bytes)
 0x000000000000001a (FINI_ARRAY)         0x9052d8
 0x000000000000001c (FINI_ARRAYSZ)       8 (bytes)
 0x000000000000000c (INIT)               0x903a24
 0x000000000000000d (FINI)               0x903a3c
 0x000000006ffffff0 (VERSYM)             0xfe8
 0x000000006ffffffe (VERNEED)            0x1104
 0x000000006fffffff (VERNEEDNUM)         5
 0x0000000000000000 (NULL)               0x0

/opt/WidevineCdm/chromium/_platform_specific/linux_arm64 $ ldd libwidevinecdm.so
        /lib/ld-musl-aarch64.so.1 (0xffff87a74000)
        libdl.so.2 => /lib/ld-musl-aarch64.so.1 (0xffff87a74000)
        libpthread.so.0 => /lib/ld-musl-aarch64.so.1 (0xffff87a74000)
        libnspr4.so => /usr/lib/libnspr4.so (0xffff87a20000)
        libm.so.6 => /lib/ld-musl-aarch64.so.1 (0xffff87a74000)
        libc.so.6 => /lib/ld-musl-aarch64.so.1 (0xffff87a74000)
        ld-linux-aarch64.so.1 => /lib/ld-linux-aarch64.so.1 (0xffff879ff000)
Error relocating libwidevinecdm.so: __vsnprintf_chk: symbol not found
Error relocating libwidevinecdm.so: __vasprintf_chk: symbol not found
Error relocating libwidevinecdm.so: __wmemset_chk: symbol not found
Error relocating libwidevinecdm.so: strtoll_l: symbol not found
Error relocating libwidevinecdm.so: strtoull_l: symbol not found
Error relocating libwidevinecdm.so: __vfprintf_chk: symbol not found
Error relocating libwidevinecdm.so: __memcpy_chk: symbol not found
Error relocating libwidevinecdm.so: __open64_2: symbol not found
Error relocating libwidevinecdm.so: __libc_malloc: symbol not found
Error relocating libwidevinecdm.so: __libc_calloc: symbol not found
Error relocating libwidevinecdm.so: __libc_memalign: symbol not found
Error relocating libwidevinecdm.so: __libc_realloc: symbol not found
Error relocating libwidevinecdm.so: __libc_free: symbol not found
Error relocating libwidevinecdm.so: fcntl64: symbol not found
Error relocating libwidevinecdm.so: __fgets_chk: symbol not found
Error relocating libwidevinecdm.so: __memset_chk: symbol not found
Error relocating libwidevinecdm.so: __longjmp_chk: symbol not found
Error relocating libwidevinecdm.so: __register_atfork: symbol not found