android4.4 compile error, and LLVM-related

Problem description
Recently want to look at the source of android4.4, but in the process of compiling encountered the following problems, I really can not help to look at, I do not, the introduction of the online about 4.0 of similar error modification method in 4.4 invalid, in fact, the error is not the same.
4.0 Error Modification Method:

$vi external/llvm/llvm-host-build.mk +local_ldlibs: =-LPTHREAD-LDL

The following is a 4.4 compile error message

External/llvm/lib/transforms/vectorize/bbvectorize.cpp:2909: error: undefined reference to   ' Llvm::mdnode::getmostgenerictbaa (llvm::mdnode*, llvm::mdnode*) ' external/llvm/lib/transforms/ vectorize/bbvectorize.cpp:1147: error: undefined reference to  ' Llvm::AliasSet:: Aliasesunknowninst (llvm::instruction*, llvm::aliasanalysis&)  const ' external/llvm/lib/Transforms/ vectorize/bbvectorize.cpp:1156: error: undefined reference to  ' Llvm::AliasSetTracker: : Add (llvm::instruction*) ' external/llvm/lib/transforms/vectorize/bbvectorize.cpp:816: error:  undefined reference to  ' Llvm::simplifyinstructionsinblock (LLVM::BASICBLOCK*,&NBSP;LLVM::D atalayout const*, llvm::targetlibraryinfo const*) ' external/llvm/lib/transforms/vectorize/ loopvectorize.cpp:770: error: undefined reference to  ' Llvm::Loop::setLoopID (LLVM:: mdnode*)  const ' EXTERNAL/LLVM/LIB/TRANSFOrms/vectorize/loopvectorize.cpp:980: error: undefined reference to  ' Llvm::Loop:: Isloopinvariant (llvm::value*)  const ' external/llvm/lib/transforms/vectorize/loopvectorize.cpp:980:  error: undefined reference to  ' Llvm::loop::isloopinvariant (llvm::Value*)  const ' external/llvm/lib/transforms/vectorize/loopvectorize.cpp:1433: error: undefined reference  to  ' Llvm::loopbase<llvm::basicblock, llvm::loop>::getexitblock ()  const ' external/llvm/lib/ transforms/vectorize/loopvectorize.cpp:3069: error: undefined reference to  ' LLVM:: Getunderlyingobjects (LLVM::VALUE*,&NBSP;LLVM::SMALLVECTORIMPL&LT;LLVM::VALUE*&GT;&AMP;,&NBSP;LLVM::D atalayout  const*, unsigned int) ' external/llvm/lib/transforms/vectorize/loopvectorize.cpp:3037:  error: undefined reference to  ' Llvm::isnoaliasargument (llvm::value const*) ' external/ Llvm/lib/transforms/vectorize/loopvectorize.cpp:3037: error: undefined reference to  ' Llvm::isNoAliasCall (llvm::Value  const*) ' external/llvm/lib/transforms/vectorize/loopvectorize.cpp:3085: error: undefined  reference to  ' Llvm::isidentifiedobject (llvm::value const*) ' external/llvm/lib/transforms/ vectorize/loopvectorize.cpp:3090: error: undefined reference to  ' LLVM:: Isidentifiedobject (llvm::value const*) ' external/llvm/lib/transforms/vectorize/loopvectorize.cpp:3530:  error: undefined reference to  ' Llvm::loop::isannotatedparallel ()  const ' external /llvm/lib/transforms/vectorize/loopvectorize.cpp:1952: error: undefined reference to  ' Llvm::loopblocksdfs::p erform (llvm::loopinfo*) ' external/llvm/lib/transforms/vectorize/loopvectorize.cpp:4299:  error: undefined reference to  ' Llvm::loopblocksdfs::p erform (llvm::loopinfo*) ' External/llvm/lib/transforms/vectorize/loopvectorize.cpp:731: error: undefined reference to  ' Llvm::loop::getloopid ()  const ' external/llvm/lib/transforms/ipo/internalize.cpp:123: error: undefined reference to  ' Llvm::collectusedglobalvariables (llvm::module&, llvm::smallptrset<llvm::globalvalue*, 8u> &, bool) ' external/llvm/lib/transforms/ipo/internalize.cpp:150: error: undefined  reference to  ' Llvm::callgraphnode::removeoneabstractedgeto (llvm::callgraphnode*) ' external/llvm/lib/ codegen/selectiondag/selectiondagisel.cpp:343: error: undefined reference to  ' LLVM:: Getsuccessornumber (llvm::basicblock*, llvm::basicblock*) ' external/llvm/include/llvm/adt/smallvector.h:81:  error: undefined reference to  ' Llvm::branchprobabilityinfo::id ' external/llvm/lib/ codegen/selectiondag/selectiondagisel.cpp:290: error: undefined reference to  ' LLVM:: InitializebranchprobabiliTyinfopass (LLVM::P assregistry&) ' external/llvm/lib/codegen/selectiondag/selectiondagisel.cpp:370:  error: undefined reference to  ' Llvm::targetmachine::resettargetoptions (LLVM:: machinefunction const*)  const ' external/llvm/lib/codegen/selectiondag/selectiondagisel.cpp:380:  error: undefined reference to  ' Llvm::branchprobabilityinfo::id ' external/llvm/lib/CodeGen/ passes.cpp:409: error: undefined reference to  ' Llvm::createlowerinvokepass (LLVM:: Targetmachine const*, bool) ' collect2: error: ld returned 1 exit  statusmake: *** [out/target/product/generic/obj/shared_libraries/libllvm_intermediates/linked/ libllvm.so]  Error  1

I hope you pass to some ideas or suggestions, my points are not many, only so many, all gave out. Solutions 1
No, help the top.

android4.4 compile error, and LLVM-related