Following instrucions in the README, BUILD INSTRUCTIONS (Windows): When I try to build with: cmake -DCMAKE_INSTALL_PREFIX=c:\my_install_folder\llvm\ -DLLVM_TARGETS_TO_BUILD="X64" -DCMAKE_BUILD_TYPE=Release -G "NMake Makefiles JOM" .. llvm-build: error: invalid target to enable: 'X64' (not in project) It appears that this target does not exist. Only "X86" exists. I googled for this target and found on this website http://lists.llvm.org/pipermail/cfe-dev/2015-March/042128.html that there is no x64 target at all.
Git commit c9822684f5986f1f9b4c90556b0db9aaacaae3ed by Sergio Martins. Committed on 02/05/2016 at 11:44. Pushed by smartins into branch 'master'. README: Fix Windows build instructions X86 builds both x86 and x86_64 backends. X64 isn't even a supported option. M +1 -1 README http://commits.kde.org/clazy/c9822684f5986f1f9b4c90556b0db9aaacaae3ed