Copy Makefile.common.in.sample to Makefile.common.in and edit accordingly.

./configure --with-llvmsrc=LLVM_SRC_ROOT --with-llvmobj=LLVM_BUILD_ROOT

Run make.

To run the plugin:

Linux:
clang -cc1 -load Debug+Asserts/lib/libPrintTassAST.so -plugin print-tass file.c

Darwin:
clang -cc1 -load Debug+Asserts/lib/libPrintTassAST.dylib -plugin print-tass file.c

You may need to add Debug+Asserts/lib to LD_LIBRARY_PATH.

If you have multiple llvm/clang builds (e.g. an SVN build and a release build)
then make sure that the clang binary you use corresponds $LLVM_OBJ_ROOT.
