Boost library + Qt

I've the file boost_1_60_0.zip and unzipped in directory
C: \ Boostfinal


And then build the file C: \a using the bootstrap and b2 .

My .pro file looks like this :

IncludePath + = C: \ Boostfinal \ boost_1_60_0

LIBS + = C:\a\boost\bin.v2\libs\regex\build\gcc-mingw-4.9.2\release\link-static\threading-multi\libboost_regex-mgw49-mt-1_60.a


But I have the Following message:
"Duplicate section ' .rdata libboost_regex - mgw49 - MT- 1-60.a ( regex.o ) "

anyone can help me ?

It'll be silly but have you tried without white spaces in include path?