The CMake build system of _PFASST++_ offers the option pfasst_WITH_EXTRA_WRAPPER that if enabled will create to shell scripts called cc_wrapper.sh and cxx_wrapper.sh in the build directory.These can be used to specify a compiler wrapper. Therefore the environment variable PREP is used. All compiler calls of the build system will result in calls to $PREP <original-compiler>. This will be demonstrated with the example of Score-P a scalable performance and communication analysis tool.

1. Call cmake as usual but pass the argument -Dpfasst_WITH_EXTRA_WRAPPER=ON option. There should now be two shell scripts in the build directory.
2. When compiling use PREP=scorep make instead of make otherwise you will compile as usual. The binaries are now instrumented using Score-P.

Note on linking: On some architectures you only want to add Score-P during the link step. Therefore first compile without setting PREP which will result in an unistrumented object and binary. Than delete the binary and compile with PREP=scorep. Because the object files have not been deleted only the binaries will be linked (now with Score-P support).