gmake/dist/getopt.c

2 NOTE: getopt is now part of the C library, so if you don't know what
27 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
70    contain conflicting prototypes for getopt.  */
88 /* This version of `getopt' appears to the caller like standard Unix `getopt'
92    As `getopt' works, it permutes the elements of ARGV so that,
102 #include "getopt.h"
104 /* For communication from `getopt' to the caller.
105    When `getopt' finds an option that takes an argument,
114    and for communication between successive calls to `getopt'.
116    On entry to `getopt', zero means this is the first call; initialize.
118    When `getopt' returns -1, this is the index of the first of the
127 /* Formerly, initialization of getopt depended on optind==0, which
128    causes problems with re-calling getopt as programs generally don't
149    system's own getopt implementation.  */
180    `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
263    is valid for the getopt call we must make sure that the ARGV passed
264    to getopt is that one passed to the process.  */
454    (aside from the initial '-') are option characters.  If `getopt'
458    If `getopt' finds another option character, it returns that character,
459    updating `optind' and `nextchar' so that the next call to `getopt' can
462    If there are no more option characters, `getopt' returns -1.
487    When `getopt' finds a long-named option, it returns 0 if that option's
955 getopt (int argc, char *const *argv, const char *optstring)
969    the above definition of `getopt'.  */
981       c = getopt (argc, argv, "abc:d:0123456789");
1019 	  printf ("?? getopt returned character code 0%o ??\n", c);