Fix link in GNUInstallDirs.cmake module for amd64 ABI
It's my understanding that including the cmake module
GNUInstallDirs ensures that the install directory adheres to the GNU directory structure guidelines as described here.
For some reason, these guidelines are overridden for various reasons due to
Modules/GNUInstallDirs.cmake#L203-212 - apparently something to do with the amd64 ABI. The link to that file is dead, and I'm not sure where to find it.
Is the following link a copy of the original document?