Where is libatomic1.apk?

Installing and Using OpenWrt
1

I have been using OpenWRT on Luxul ABR-4500 with NBN HFC for about a year or two now.
I upgraded to 25.12.4 a couple of months ago and it works great.

Today I tried to install new packages and realised that my apk is broken.

After a lot of digging, I figured that I miss the wget-ssl package (the busybox of 25.12 doesn't include it built-in anymore?) and managed to install it, but it now fails with:

# wget
Error loading shared library libatomic.so.1: No such file or directory (needed by /usr/lib/libssl.so.3)
Error loading shared library libatomic.so.1: No such file or directory (needed by /usr/lib/libcrypto.so.3)

This error essentially makes apk unusable, and in all my searches of the OpenWRT download and source code, I can't find where to fetch this package.

What can I do to rescue my router without completely reinstalling it (which I'm not even sure will work).

Here is my /etc/os-release:

# cat /etc/os-release
NAME="OpenWrt"
VERSION="25.12.4"
ID="openwrt"
ID_LIKE="lede openwrt"
PRETTY_NAME="OpenWrt 25.12.4"
VERSION_ID="25.12.4"
HOME_URL="https://openwrt.org/"
BUG_URL="https://bugs.openwrt.org/"
SUPPORT_URL="https://forum.openwrt.org/"
FIRMWARE_URL="https://downloads.openwrt.org/"
BUILD_ID="r32933-4ccb782af7"
OPENWRT_BOARD="bcm53xx/generic"
OPENWRT_ARCH="arm_cortex-a9"
OPENWRT_TAINTS=""
OPENWRT_DEVICE_MANUFACTURER="OpenWrt"
OPENWRT_DEVICE_MANUFACTURER_URL="https://openwrt.org/"
OPENWRT_DEVICE_PRODUCT="Generic"
OPENWRT_DEVICE_REVISION="v0"
OPENWRT_RELEASE="OpenWrt 25.12.4 r32933-4ccb782af7"
OPENWRT_BUILD_DATE="1778712129"

Thanks.

2

Here:

Libatomic is part on the default C libraries, and so target-specfic that it is built along the kernel and firmware itself and placed to the target package downloads.

Ps.
Second result in the code search results shows that it is part of the core toolchain definition:
https://github.com/search?q=repo%3Aopenwrt%2Fopenwrt%20libatomic%20&type=code

(But that does not reveal clearly the download location, which deviates from the vanilla packages)

3

Thank you!

I found it and managed to install it with apk extract ... and manually copying the files to the correct locations.

I was digging around the entire repo website as much as I could without having a search function (something which would have been useful) and couldn't find it.