Hi,
I've downloaded the realease tarball from here:
https://github.com/Macaulay2/M2/releases

During compile I run into:
make[1]: Leaving directory `/Users/tom/temp/buildM2/M2-release-1.10-stable-20170616/M2/BUILD/tom/libraries'
cd ../../.. && git submodule update --init M2/submodules/memtailor
fatal: Not a git repository (or any of the parent directories): .git
make: *** [../../submodules/memtailor/configure.ac] Error 128

I think this is because the build system expects some git information in its subdirectories, but github strips all .git directories when building the release tarball? (I could be wrong here...)