/tvm/src/codegen/codegen.cc:27: Check failed: bf != nullptr Target llvm is not enabled

[abner2015]

when i run Deploy Single Shot Multibox Detector(SSD) model follow TVM tutorials, get the error :
/tvm/src/codegen/codegen.cc:27: Check failed: bf != nullptr Target llvm is not enabled

`[16:03:28] src/nnvm/legacy_json_util.cc:209: Loading symbol saved by previous version v0.8.0. Attempting to upgrade...
[16:03:28] src/nnvm/legacy_json_util.cc:217: Symbol successfully upgraded!
[16:03:28] src/nnvm/legacy_json_util.cc:209: Loading symbol saved by previous version v0.8.0. Attempting to upgrade...
[16:03:28] src/nnvm/legacy_json_util.cc:217: Symbol successfully upgraded!
Traceback (most recent call last):
File "/home/abner/new/project/mxnet/tvm-project/demo.py", line 52, in
graph, lib, params = compiler.build(net, target, {"data": dshape}, params=params)
File "/home/abner/.local/lib/python2.7/site-packages/nnvm-0.8.0-py2.7.egg/nnvm/compiler/build_module.py", line 279, in build
graph, params = precompute_prune(graph, params)
File "/home/abner/.local/lib/python2.7/site-packages/nnvm-0.8.0-py2.7.egg/nnvm/compiler/build_module.py", line 396, in precompute_prune
out_arrs = _run_graph(pre_graph, params)
File "/home/abner/.local/lib/python2.7/site-packages/nnvm-0.8.0-py2.7.egg/nnvm/compiler/build_module.py", line 345, in _run_graph
graph, libmod, _ = build(graph, target, shape, dtype)
File "/home/abner/.local/lib/python2.7/site-packages/nnvm-0.8.0-py2.7.egg/nnvm/compiler/build_module.py", line 294, in build
graph = graph.apply("GraphFusePartition").apply("GraphFuseCompile")
File "/home/abner/.local/lib/python2.7/site-packages/nnvm-0.8.0-py2.7.egg/nnvm/graph.py", line 234, in apply
check_call(_LIB.NNGraphApplyPasses(self.handle, npass, cpass, ctypes.byref(ghandle)))
File "/home/abner/.local/lib/python2.7/site-packages/nnvm-0.8.0-py2.7.egg/nnvm/_base.py", line 75, in check_call
raise NNVMError(py_str(_LIB.NNGetLastError()))
nnvm._base.NNVMError: TVMCall CFunc Error:
Traceback (most recent call last):
File "tvm/_ffi/_cython/./function.pxi", line 38, in tvm._ffi._cy2.core.tvm_callback
File "/home/abner/.local/lib/python2.7/site-packages/nnvm-0.8.0-py2.7.egg/nnvm/compiler/build_module.py", line 123, in _build
return tvm.build(funcs, target=target, target_host=target_host)
File "/home/abner/.local/lib/python2.7/site-packages/tvm-0.4.0-py2.7-linux-x86_64.egg/tvm/build_module.py", line 501, in build
mhost = codegen.build_module(fhost, str(target_host))
File "/home/abner/.local/lib/python2.7/site-packages/tvm-0.4.0-py2.7-linux-x86_64.egg/tvm/codegen.py", line 20, in build_module
return _Build(lowered_func, target)
File "/home/abner/.local/lib/python2.7/site-packages/tvm-0.4.0-py2.7-linux-x86_64.egg/tvm/_ffi/function.py", line 280, in my_api_func
return flocal(*args)
File "tvm/_ffi/_cython/./function.pxi", line 264, in tvm._ffi._cy2.core.FunctionBase.call
File "tvm/_ffi/_cython/./function.pxi", line 213, in tvm._ffi._cy2.core.FuncCall
File "tvm/_ffi/_cython/./function.pxi", line 205, in tvm._ffi._cy2.core.FuncCall3
File "tvm/_ffi/_cython/./base.pxi", line 131, in tvm._ffi._cy2.core.CALL
TVMError: [16:03:29] /home/user/new/software/tvm/src/codegen/codegen.cc:27: Check failed: bf != nullptr Target llvm is not enabled

system: ubuntu 16.04
config.cmake:
set(USE_LLVM ON)

I had install LLVM

cmake ..
abner@user:~/new/software/tvm/build$ cmake .. -- Build with RPC support... -- Build with Graph runtime support... -- Build with LLVM 6.0.1 -- Set TVM_LLVM_VERSION=60 -- Configuring done -- Generating done -- Build files have been written to: /home/abner/new/software/tvm/build

The issus cannot run tutorial files well. #495
who can tell me how can i slolve it.
What should I do to make the file work?

[abner2015]

solve:
compile python use the commend:
python setup.py install --user

if use the commend :
python setup.py install
you will get the error .

i don't know the reason

[PariksheetPinjari909]

cmake automatically identify LLVM path. In your case you can set the llvm-config path manually in config.cmake as below:
set(USE_LLVM /usr/lib/llvm-6.0/bin/llvm-config)

You can check the llvm-config is present at this location or not.