[flang-dev] [f18 MLIR rebase] New f18 master requires updating your LLVM builds and changes cmake flags

[Jean Perier via flang-dev]

Hi,

F18 PR1090 that was just merged aligns f18 with MLIR latest interface. When you update your sandbox to f18 new master:
- You will need to use an LLVM built with llvm-project head from today (see link below for a validated version).
- You need to add -DMLIR_DIR=<your llvm install>/lib/cmake/mlir to f18 command for out of LLVM tree builds.
  (Note that replacing both -DLLVM_DIR and -DMLIR_DIR by a single -DCMAKE_PREFIX_PATH=<your llvm install > should also work.)

I have updated https://github.com/flang-compiler/f18-llvm-project/tree/f18 LLVM fork with the LLVM head from this morning that was validated with f18.

Jean

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