Patchvsubmitted as pull request:

https://github.com/LonnyGomes/hexcurse/pull/18

diff -u -r ../hexcurse-hexcurse-1.58/src/getopt.c ./src/getopt.c
--- ../hexcurse-hexcurse-1.58/src/getopt.c	2014-02-26 19:26:34.000000000 -0500
+++ ./src/getopt.c	2015-08-23 07:53:55.917711262 -0400
@@ -32,16 +32,6 @@
 #undef optind
 #undef alloca
 
-/* The following modification was submited by Claudio Fanin.  This change *
- * enables hexcurse to be compiled with SGI's proprietary compiler        */
-#ifdef _SGIAPI
-#include <alloca.h>
-#endif
-#ifndef __alloca
-#define __alloca      alloca
-#endif
-/* end of modification */
-
 #ifdef HAVE_OPTIND
 extern char* optarg;
 #else
@@ -85,7 +75,7 @@
      char **argv;
 {
   int nonopts_size = (last_nonopt - first_nonopt) * sizeof (char *);
-  char **temp = (char **) __alloca (nonopts_size);
+  char **temp = (char **) malloc(nonopts_size);
 
   /* Interchange the two blocks of data in ARGV.  */
 
@@ -95,6 +85,7 @@
   my_bcopy ((char *) temp,
 	    (char *) &argv[first_nonopt + optind - last_nonopt],
 	    nonopts_size);
+  free(temp);
 
   /* Update records for the slots the non-options now occupy.  */