Modded 7zip For Lz4 -

: Next, the LZ4 compression and decompression functions need to be implemented within 7zip. This requires modifying the 7zip source code to call the LZ4 library's functions for compressing and decompressing data.

If you’re looking for a custom build or adding LZ4 to 7-Zip, these are the key features to implement: modded 7zip for lz4