libpng-1.6.38-ca06e99-windows64-ca06e99.tar.zst compiled with /GL and causing linker warning in VS2022

Environment

Seen by using LL's https://github.com/secondlife/3p-libpng/releases/download/v1.6.38-ca06e99/libpng-1.6.38-ca06e99-windows64-ca06e99.tar.zst pre-built library to replace https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/87780/805832/libpng-1.6.8.563850-windows64-563850.tar.bz2 for TPV Windows builds.

Description

I am in the process to migrate to LL's github libraries builds for the Windows64 builds of the Cool VL Viewer, and when doing so I get, at link time:
"libpng16.lib(png.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance"
I do not encounter this problem if I revert libpng to the old bitbucket built package.
As I understand it, this would be due to a wrong /GL option given when compiling libpng for Windows...

Reproduction steps

Build the viewer under VS2022 using https://github.com/secondlife/3p-libpng/releases/download/v1.6.38-ca06e99/libpng-1.6.38-ca06e99-windows64-ca06e99.tar.zst for libpng, and observe the warning at link time.