I tried to build LLVM to include the RISCV (experimental) target. I noticed that the instructions on the wiki were out of dat because they said to use ‘-DLLVM_TARGETS_TO_BUILD’, but this gave a warning to use LLVM_EXPERIMENTAL_TARGETS_TO_BUILD as well (or instead?).
So I compiled with these options:
cmake -DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_INSTALL_PREFIX=…/install -DLLVM_OPTIMIZED_TABLEGEN=On -LLVM_EXPERIMENTAL_TARGETS_TO_BUILD=“RISCV” -DLLVM_TARGETS_TO_BULD=“RISCV” …
However after completing that compilation I get this message:
CMake Warning:
Manually-specified variables were not used by the project:
LLVM_TARGETS_TO_BULD
And RISCV does not show up as a target in llc --version