From 46445399e895a52a1db85c9d845f44d4ced31285 Mon Sep 17 00:00:00 2001
From: Hayaki Saito <user@zuse.jp>
Date: Thu, 25 Sep 2014 22:30:22 +0900
Subject: [PATCH] Fix for some environment missing "getopt_long"

---
 converters/sixel2png.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/converters/sixel2png.c b/converters/sixel2png.c
index 016eb5b1..599ce660 100644
--- a/converters/sixel2png.c
+++ b/converters/sixel2png.c
@@ -253,9 +253,13 @@ main(int argc, char *argv[])
     char *output = strdup("-");
     char *input = strdup("-");
     int long_opt;
+#if HAVE_GETOPT_LONG
     int option_index;
+#endif  /* HAVE_GETOPT_LONG */
     int nret = 0;
+    char const *optstring = "i:o:VH";
 
+#if HAVE_GETOPT_LONG
     struct option long_options[] = {
         {"input",        required_argument,  &long_opt, 'i'},
         {"output",       required_argument,  &long_opt, 'o'},
@@ -263,10 +267,15 @@ main(int argc, char *argv[])
         {"help",         no_argument,        &long_opt, 'V'},
         {0, 0, 0, 0}
     };
+#endif  /* HAVE_GETOPT_LONG */
 
     for (;;) {
-        n = getopt_long(argc, argv, "i:o:VH",
+#if HAVE_GETOPT_LONG
+        n = getopt_long(argc, argv, optstring,
                         long_options, &option_index);
+#else
+        n = getopt(argc, argv, optstring);
+#endif  /* HAVE_GETOPT_LONG */
         if (n == -1) {
             break;
         }