```
/usr/bin/ld: tools/flang/lib/Optimizer/OpenACC/Analysis/CMakeFiles/FIROp enACCAnalysis.dir/FIROpenACCSupportAnalysis.cpp.o: in function `fir::acc ::FIROpenACCSupportAnalysis::isValidValueUse(mlir::Value, mlir::Region&) ':
FIROpenACCSupportAnalysis.cpp:(.text._ZN3fir3acc25FIROpenACCSupportAnaly sis15isValidValueUseEN4mlir5ValueERNS2_6RegionE+0xb): undefined referenc e to `mlir::acc::isValidValueUse(mlir::Value, mlir::Region&)' clang++: error: linker command failed with exit code 1 (use -v to see in vocation)
```
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