#define _POSIX_SOURCE 1
#define POSIXLY_CORRECT 1
-#ifdef HAVE_STDLIB_H
+#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#else
extern void exit();
extern char *malloc();
#endif /* STDC_HEADERS */
+#ifndef HAVE_PROGRAM_INVOCATION_SHORT_NAME
+# ifdef HAVE___PROGNAME
+extern char *__progname;
+# define program_invocation_short_name __progname
+# else /* HAVE___PROGNAME */
+# ifdef HAVE_GETEXECNAME
+# include <stdlib.h>
+# define program_invocation_short_name \
+ prog_inv_sh_nm_from_file(getexecname(), 0)
+# else /* HAVE_GETEXECNAME */
+# define program_invocation_short_name \
+ prog_inv_sh_nm_from_file(__FILE__, 1)
+# endif /* HAVE_PROGRAM_INVOCATION_SHORT_NAME */
+static char prog_inv_sh_nm_buf[256];
+static inline char *prog_inv_sh_nm_from_file(char *f, char stripext)
+{
+ char *t;
+ if ((t = strrchr(f, '/')) != NULL) {
+ t++;
+ } else {
+ t = f;
+ }
+ strncpy(prog_inv_sh_nm_buf, t, sizeof(prog_inv_sh_nm_buf) - 1);
+ prog_inv_sh_nm_buf[sizeof(prog_inv_sh_nm_buf) - 1] = '\0';
+
+ if (stripext && (t = strrchr(prog_inv_sh_nm_buf, '.')) != NULL) {
+ *t = '\0';
+ }
+ return prog_inv_sh_nm_buf;
+}
+# endif
+#endif
+
/* Structures and unions */
struct configuration_t {
char *dhcpdconf_file;