Getting exec format error when building master llvm for X86 target

Does llvm has change the way their are building?

Command used
git clone llvm-link

cmake -G “Unix Makefiles” -DCMAKE_BUILD_TYPE=Debug -DLLVM_TARGETS_TO_BUILD=“X86”
make -j8
Encounter the error

Permission denied cannot execute …/…/bin/clang-ast-dump

I have used
chmod +x path/to/clang-ast-dump

Then i got new error
exec format error clang-ast-dump

You can try as a first step:

> file path/to/clang-ast-dump
> ls -lah path/to/clang-ast-dump