gawk ¶It is possible to add new functions written in C or C++ to gawk using
dynamically loaded libraries. This facility is available on systems
that support the C dlopen() and dlsym()
functions. This chapter describes how to create extensions
using code written in C or C++.
If you don’t know anything about C programming, you can safely skip this
chapter, although you may wish to review the documentation on the
extensions that come with gawk (see The Sample Extensions in the gawk Distribution),
and the information on the gawkextlib project (see The gawkextlib Project).
The sample extensions are automatically built and installed when
gawk is.
NOTE: When --sandbox is specified, extensions are disabled (see Command-Line Options).