11.1.5. - How does it work?
For each type of function, a prototype file is copied from
$CPLOTHOME/prototypes
and given the name you selected.
The prototype contains skeleton
C subroutines and help information appropriate for the function type
you selected.
You are then put into your chosen editor.
On exiting
the editor, the shell script
$CPLOTHOME/bin/makefunc
is run from the function directory.
That file normally invokes
the C compiler to compile your module and link it with the appropriate
overhead modules.
If your user function contains the string
cplot_compile: followed by commands to compile your function, those commands are
used instead of the default commands from
makefunc.
The commands
can refer to the
make
utility or invoke the C compiler directly.
Possible ways of including the information in a function source file
are:
/*
* cplot_compile: make my_func.5
*/
or
#if 0
cplot_compile: make my_func.5
#endif
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