ld: /var/lib/widevine/libwidevinecdm.so: undefined reference to `__stack_chk_guard@GLIBC_ABI_DT_RELR'

[discapes]

I get the following error when trying to run ld libwidevinecdm.so

ld /var/lib/widevine/libwidevinecdm.so
ld: warning: cannot find entry symbol _start; not setting start address
ld: /var/lib/widevine/libwidevinecdm.so: undefined reference to `__stack_chk_guard@GLIBC_ABI_DT_RELR'

I assume it is the reason why widevine doesn't work for me, so I'm making this issue while I try to figure out a fix. Here's some info about my system:

uname -a
Linux 6.17.7-p2-asahi-dist #1 SMP PREEMPT_DYNAMIC aarch64 GNU/Linux
ldd --version
ldd (Gentoo 2.42-r2 (patchset 4)) 2.42
ACCEPT_KEYWORDS="arm64 ~arm64"
+ aggressive optimizations but I doubt they're the issue?

[discapes]

Replacing

aux.vna_other = 3

with

# Find a free version index by scanning all existing indexes
all_versions = []
ver_idx_table = shdr_by_name[b".gnu.version"]
for i in range(0, ver_idx_table.sh_size, 2):  # uint16 table
    idx = int.from_bytes(
        elf[ver_idx_table.sh_offset + i : ver_idx_table.sh_offset + i + 2],
        "little"
    )
    all_versions.append(idx)

new_version_index = max(all_versions) + 1
aux.vna_other = new_version_index

allows me to ld the library (only giving me a warning about not setting start address), and I can play DRM content with it on Firefox, Brave and Chromium. Note that Chromium on arm64 needs this patch, and for Firefox to decode h264 properly I had to downgrade from FFMPEG 8 to 7.