The generated tar archives contain the uid/gid of the builder,
if unpacked as root on another system those will denote nothing
or an unexpected user/group.
The expectation would be uid/gid = 0.
Use a simple enough tar format as well.
The Mac version of tar (bsdtar?) does not support those flags,
for CI the separate gnu-tar is installed.
Since e56fb975e9, strip-llvm.sh
has been called as part of build-all.sh.
This avoid stripping out files that have been installed into the
share directory by later stages in build-all.sh. (strip-llvm.sh
currently flat out removes the share directory.)
As macOS itself doesn't ship with libzstd, avoid picking it up from
third party intallations.
CMake even looks for things in directories outside of $PATH;
for Darwin targets, CMake includes /opt/homebrew in
CMAKE_SYSTEM_PREFIX_PATH which gets searched automatically.
Martin Storsjö