Wclang is a tool which helps you to cross compile source code easily with clang on linux for windows.
Wclang is basically a wrapper for clang, which allows you to directly target windows.
Wclang detects the target and headers automatically and adds them to the clang invocation command.

After the installation you will have "w32-clang", "w32-clang++", "w64-clang" and "w64-clang++" available as "compiler".

PREREQUISITES:

 A C++11 compiler for compiling the wrapper (g++ 4.6+, clang)
 clang
 mingw-w64 with its headers and libs

INSTALLATION:

 ./bootstrap.sh
 ./configure
 make
 make install

UPDATING:

 If you are updating a previous installed wclang installation,
 then don't forget to re-run ./bootstrap.sh, otherwise ./configure
 will most likely fail.

EXAMPLES:

 w32-clang++ hello-world.cpp -o hello-world.exe && wine hello-world
 CC=w32-clang ./configure --host=`w32-clang -wc-target`

LISTING AVAILABLE PARAMETERS:
 w32-clang -wc-help

KNOWN TO WORK ON:
 ubuntu, debian (wheezy*), mint, arch, fedora
 others dists may work too, but have not been tested


* wheezy: important: clang-3.0 coming with wheezy is too old
  to compile the wrapper, so use g++ or get a newer clang
  from e.g: http://llvm.org/apt/