From the readme:
> The recommended release build is:
> make MATCHCOMPILER=yes FILESDIR=/usr/share/cppcheck HAVE_RULES=yes
>
> Flags:
> MATCHCOMPILER=yes : Python is used to optimise cppcheck at compile time
> FILESDIR=/usr/share/cppcheck : Specify folder where cppcheck files are installed
> HAVE_RULES=yes : Enable rules (pcre is required if this is used)
This adds MATCHCOMPILER and fixes the location of FILESDIR into a
standard directory instead of that ugly '$out/cfg' directory.
The Makefile needs 'which' to locate Python.