readme: Fix missing "host" LLVM target
@@ -32,7 +32,7 @@ And then follow these steps:
-DLLVM_ENABLE_PROJECTS=mlir \
-DLLVM_INSTALL_UTILS=ON \
-DLLVM_OPTIMIZED_TABLEGEN=ON \
- -DLLVM_TARGETS_TO_BUILD=""
+ -DLLVM_TARGETS_TO_BUILD="host"
cmake --build . --target install
popd
