with this patch
-LLVM_@LLVM_VERSION_MAJOR@.@LLVM_VERSION_MINOR@ { global: *; };
+JLBB_LLVM_@LLVM_VERSION_MAJOR@.@LLVM_VERSION_MINOR@ { global: *; };
and disabling WebAssembly
# Also target Wasm because Javascript is the Platform Of The Future (TM)
# CMAKE_FLAGS="${CMAKE_FLAGS} -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD:STRING=\"WebAssembly\""