why does boost compilation fails with clang? - boost

Question

I am trying to compile boost C++ using clang.
./b2 --prefix=~/boost --includedir=~/boost/include --libdir=~/boost/lib toolset=clang cxxflags="-std=c++11 -stdlib=libc++ -isystem ~/libcxx/include/" linkflags="-stdlib=libc++ -L ~/libcxx/lib/"
When I see log file it gives error saying
Undefined symbols for architecture x86_64:
"boost::system::system_category()", referenced from:
__GLOBAL__I_a in exceptions.o
"boost::system::generic_category()", referenced from:
__GLOBAL__I_a in exceptions.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
my default clang is clang-mp-3.3. Can anyone please help me figure out what this problem is.

Answer 1

After searching for the reason of error in the web I found this which explain about compiling boost with clang. I am not sure why adding define=BOOST_SYSTEM_NO_DEPRECATED made it worked. Please do comment anyone who knows why it worked. I was then able to compile with no error but I still see some warnings but it worked for me for now.
The default clang I am using is (clang-mp-3.3)
$ clang -v
clang version 3.3 (tags/RELEASE_33/final)
Target: x86_64-apple-darwin11.4.2
Thread model: posix
./bootstrap.sh --with-toolset=clang --without-libraries=mpi,python,graph_parallel
./b2 clean
./b2 toolset=clang cxxflags="-std=c++11 -stdlib=libc++" linkflags="-stdlib=libc++" define=BOOST_SYSTEM_NO_DEPRECATED