3.19.0 regressed setting CMAKE_MAKE_PROGRAM in toolchain files
Commit d5b5c192 from !4898 (merged) moved the selection of CMAKE_MAKE_PROGRAM to earlier than it has ever been before. It now occurs before CMAKE_TOOLCHAIN_FILE is loaded, which breaks toolchain files that set CMAKE_MAKE_PROGRAM. This was reported on discourse.
See also discussion in !4898 (comment 780420) about the ordering.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information