[MacPorts] #62594: yydecode @0.2.10: error: implicitly declaring library function 'strcmp'

[MacPorts]

#62594: yydecode @0.2.10: error: implicitly declaring library function 'strcmp'
--------------------------+-----------------------------
  Reporter:  cooljeanius  |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.6.4
Resolution:               |   Keywords:  bigsur catalina
      Port:  yydecode     |
--------------------------+-----------------------------

Comment (by ryandesign):

 This problem is in the project's bundled getopt.c. I've seen this before
 but never know how to fix it. Normally the obvious fix would be to include
 the header that defines the function, in this case <string.h>. However
 getopt.c goes to great lengths to deliberately avoid including <string.h>:

 {{{
 #if defined (__GNU_LIBRARY__) || defined (__sgi)
 /* We want to avoid inclusion of string.h with non-GNU libraries
    because there are many ways it can cause trouble.
    On some systems, it contains special magic macros that don't work
    in GCC.  */
 #include <string.h>
 #define my_index        strchr
 #else

 /* Avoid depending on library functions or files
    whose names are inconsistent.  */

 extern char *getenv ();
 extern int strncmp (const char *s1, const char *s2, size_t len);

 static char *
 my_index (str, chr)
      const char *str;
      int chr;
 {
   while (*str)
     {
       if (*str == chr)
         return (char *) str;
       str++;
     }
   return 0;
 }

 /* If using GCC, we can safely declare strlen this way.
    If not using GCC, it is ok not to declare it.  */
 #ifdef __GNUC__
 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
    That was relevant to code that was here before.  */
 #if !__STDC__
 /* gcc with -traditional declares the built-in strlen to return int,
    and has done so at least since version 2.4.5. -- rms.  */
 extern int strlen (const char *);
 #endif /* not __STDC__ */
 #endif /* __GNUC__ */

 #endif /* not __GNU_LIBRARY__ */
 }}}

 What is the right fix? Presumably later versions of getopt.c have
 corrected this. How did they do it? Where is upstream for getopt.c?

-- 
Ticket URL: <https://trac.macports.org/ticket/62594#comment:1>
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