# install requirements:
$ pip3 install --user meson==0.46.1
$ brew install ninja
$ brew install json-c

# compile llvm with the correct flags (!!! takes some time and disk space !!!)
# result will be installed in $HOME/toolchains
$ ./scripts/setup_llvm_clang.sh

# build:
$ export PATH="/usr/local/opt/llvm@4/bin:${PATH}"
$ meson build/debug --prefix="$(pwd)/install"
$ ninja -C build/debug install

# instrument your c program:
$ ./install/bin/trace-instr <myfile.c> ./samples/excluded_functions

# run your c program:
$ ./myfile.c.instrumented <whatever commandline you need>

# generate the taint from the trace
$ ./install/bin/trace-taint -me metadata -po pygmalion.json -to taints.tnt -t output.gz