Building on Windows - error with ninja

[Luis Specian]

I am using windows 7 64bit with VS 2010; Windows 8 SDK and DirectX SDK June 2010, I was able to build chromium but when I run "ninja -C out/Release nw -j4"

I am getting the following error:

[8/7007] CXX obj\third_party\v8-i18n\src\v8-i18n.date-format.obj

FAILED: ninja -t msvc -e environment.x86 -- "C:\google\win_toolchain\VC\bin\cl.e

xe" /nologo /showIncludes /FC @obj\third_party\v8-i18n\src\v8-i18n.date-format.o

bj.rsp /c ..\..\third_party\v8-i18n\src\date-format.cc /Foobj\third_party\v8-i18

n\src\v8-i18n.date-format.obj /Fdobj\third_party\v8-i18n\build\v8-i18n.pdb

c:\node-webkit\src\v8\include\v8.h(52) : fatal error C1189: #error :  both BUILD

ING_V8_SHARED and USING_V8_SHARED are set - please check the  build configuratio

n to ensure that at most one of these is set

[8/7007] CXX obj\third_party\v8-i18n\src\v8-i18n.collator.obj

FAILED: ninja -t msvc -e environment.x86 -- "C:\google\win_toolchain\VC\bin\cl.e

xe" /nologo /showIncludes /FC @obj\third_party\v8-i18n\src\v8-i18n.collator.obj.

rsp /c ..\..\third_party\v8-i18n\src\collator.cc /Foobj\third_party\v8-i18n\src\

v8-i18n.collator.obj /Fdobj\third_party\v8-i18n\build\v8-i18n.pdb

c:\node-webkit\src\v8\include\v8.h(52) : fatal error C1189: #error :  both BUILD

ING_V8_SHARED and USING_V8_SHARED are set - please check the  build configuratio

n to ensure that at most one of these is set

[8/7007] CXX obj\third_party\v8-i18n\src\v8-i18n.break-iterator.obj

FAILED: ninja -t msvc -e environment.x86 -- "C:\google\win_toolchain\VC\bin\cl.e

xe" /nologo /showIncludes /FC @obj\third_party\v8-i18n\src\v8-i18n.break-iterato

r.obj.rsp /c ..\..\third_party\v8-i18n\src\break-iterator.cc /Foobj\third_party\

v8-i18n\src\v8-i18n.break-iterator.obj /Fdobj\third_party\v8-i18n\build\v8-i18n.

pdb

c:\node-webkit\src\v8\include\v8.h(52) : fatal error C1189: #error :  both BUILD

ING_V8_SHARED and USING_V8_SHARED are set - please check the  build configuratio

n to ensure that at most one of these is set

[8/7007] ACTION nw_pak: repack_nw_pack_736f74bf9d8aa7351846c2d5e6897774

ninja: build stopped: subcommand failed.

Is there something I shall configure? in wich file?