7.7 Using AutoOpts

To use AutoOpts in your application:

• Create a file `myopts.def', according to the documentation above. It is probably easiest to start with the example in 7.3 Quick Start and edit it into the form you need.

• Run AutoGen to create the option interface file (myopts.h) and the option descriptor code (myopts.c):

  autogen -L $prefix/share/autogen myopts.def

• In all your source files where you need to refer to option state, #include "myopts.h".
• In your main routine, code something along the lines of:

  main( int argc, char** argv ) { { int arg_ct = optionProcess( &myprogOptions, argc, argv ); argc -= arg_ct; if ((argc < ARGC_MIN) || (argc > ARGC_MAX)) { fprintf( stderr, "%s ERROR: remaining args (%d) " "out of range\n", myprogOptions.pzProgName, argc ); USAGE( EXIT_FAILURE ); } argv += arg_ct; } if (HAVE_OPT(OPT_NAME)) respond_to_opt_name(); ... }

• Compile `myopts.c' and link your program with the following additional arguments:

  myopts.o -L $prefix/lib -lopts