PyQL building issues

Hi, I followed all the steps in the documents, and I also checked previous issues some other guys may have had, but still I can't build the library correctly, here's the messages I got from building.

setting.hpp is patched, quantlib is built, def generated, then quantlib built again.
Then I add folders containing .lib, .dll and folders containing .obj to the PATH
I also modified setup.py so that all directories can be correctly found, then I built
with MSVC. Still got the errors below...

Could you tell me are there any steps I went wrong? Thanks~

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C:\Users...\Documents\GitHub\pyql>cmd.exe
Microsoft Windows [Version 6.3.9600](c) 2013 Microsoft Corporation. All rights reserved.

C:\Users...\Documents\GitHub\pyql>python setup.py build --compiler=msvc
C:\Users...\Documents\GitHub\pyql
setup.py
C:\Python27\lib\distutils\extension.py:133: UserWarning: Unknown Extension optio
ns: 'cython_directives'
warnings.warn(msg)
missing cimport in module 'quantlib.time': quantlib\instruments\credit_default_s
wap.pyx
missing cimport in module 'quantlib.pricingengines': quantlib\instruments\credit
_default_swap.pyx
missing cimport in module 'quantlib.pricingengines': quantlib\instruments\option
.pyx
running build
running build_py
running build_ext
building 'quantlib.cashflow' extension
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\BIN\amd64\cl.exe /c /nolo
go /Ox /MD /W3 /GS- /DNDEBUG -D__WIN32__ -DWIN32 -DNDEBUG -D_WINDOWS -DNOMINMAX
-DWINNT -D_WINDLL -D_SCL_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_DEPRECATE -D_SCL_S
ECURE_NO_WARNINGS -IE:\Projects\QuantLib-1.5 -ID:\Modules\boost -I. -I./cpp_l
ayer -IC:\Python27\lib\site-packages\numpy\core\include -IC:\Python27\include -I
C:\Python27\PC /Tpquantlib\cashflow.cpp /Fobuild\temp.win-amd64-2.7\Release\quan
tlib\cashflow.obj /GR /FD /Zm250 /EHsc
cashflow.cpp
c:\python27\include\pymath.h(22) : warning C4273: 'round' : inconsistent dll lin
kage
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(51
6) : see previous definition of 'round'
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\xtgmath.h(206) :
warning C4273: 'round' : inconsistent dll linkage
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(51
6) : see previous definition of 'round'
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\BIN\amd64\link.exe /DLL /
nologo /INCREMENTAL:NO /LIBPATH:E:\Projects\QuantLib-1.5\build\vc120\Win32\Re
lease /LIBPATH:E:\Projects\QuantLib-1.5\lib /LIBPATH:. /LIBPATH:C:\Python27\l
ibs /LIBPATH:C:\Python27\PCbuild\amd64 QuantLib.lib /EXPORT:initcashflow build\t
emp.win-amd64-2.7\Release\quantlib\cashflow.obj /OUT:build\lib.win-amd64-2.7\qua
ntlib\cashflow.pyd /IMPLIB:build\temp.win-amd64-2.7\Release\quantlib\cashflow.li
b /MANIFESTFILE:build\temp.win-amd64-2.7\Release\quantlib\cashflow.pyd.manifest
/subsystem:windows
cashflow.obj : warning LNK4197: export 'initcashflow' specified multiple times;
using first specification
Creating library build\temp.win-amd64-2.7\Release\quantlib\cashflow.lib and o
bject build\temp.win-amd64-2.7\Release\quantlib\cashflow.exp
cashflow.obj : error LNK2019: unresolved external symbol "public: **cdecl QuantL
ib::Date::Date(void)" (??0Date@QuantLib@@QEAA@XZ) referenced in function "struct
_object \* __cdecl __pyx_pf_8quantlib_8cashflow_8CashFlow_4date___get**(struct _
_pyx_obj_8quantlib_8cashflow_CashFlow *)" (?__pyx_pf_8quantlib_8cashflow_8CashFl
ow_4date___get__@@YAPEAU_object@@PEAU__pyx_obj_8quantlib_8cashflow_CashFlow@@@Z)

cashflow.obj : error LNK2019: unresolved external symbol "public: **cdecl QuantL
ib::SimpleCashFlow::SimpleCashFlow(double,class QuantLib::Date const &)" (??0Sim
pleCashFlow@QuantLib@@QEAA@NAEBVDate@1@@Z) referenced in function "int __cdecl _
_pyx_pf_8quantlib_8cashflow_14SimpleCashFlow___init**(struct **pyx_obj_8quantlib
_8cashflow_SimpleCashFlow *,double,struct __pyx_obj_8quantlib_4time_4date_Date *
)" (?__pyx_pf_8quantlib_8cashflow_14SimpleCashFlow___init**@@YAHPEAU__pyx_obj_8q
uantlib_8cashflow_SimpleCashFlow@@NPEAU__pyx_obj_8quantlib_4time_4date_Date@@@Z)

build\lib.win-amd64-2.7\quantlib\cashflow.pyd : fatal error LNK1120: 2 unresolve
d externals
error: command 'C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\BIN\
amd64\link.exe' failed with exit status 1120