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7.4.5 Using the example options

Normally, however, you would not use the main clause. Instead, the file would be named something like checkopt.def, you would compile checkopt.c the usual way, and link the object with the rest of your program.

The options are processed by calling optionProcess (see libopts-optionProcess):

main( int argc, char** argv )
{
  {
    int optct = optionProcess( &checkOptions, argc, argv );
    argc -= optct;
    argv += optct;
  }

The options are tested and used as in the following fragment. ENABLED_OPT is used instead of HAVE_OPT for the --show-defs option because it is an enabled/disabled option type:

  if (  ENABLED_OPT( SHOW_DEFS )
     && HAVE_OPT( CHECK_DIRS )) {
    int    dirct = STACKCT_OPT( CHECK_DIRS );
    char** dirs  = STACKLST_OPT( CHECK_DIRS );
    while (dirct-- > 0) {
      char* dir = *dirs++;
      ...