have_framework(fw, &b)
Instance Public methods
Returns whether or not the given framework can be found on
your system. If found, a macro is passed as a preprocessor constant to the
compiler using the framework name, in uppercase, prepended with
HAVE_FRAMEWORK_.
For example, if have_framework('Ruby') returned true,
then the HAVE_FRAMEWORK_RUBY preprocessor macro would be
passed to the compiler.
If fw is a pair of the framework name and its header file name
that header file is ch