openjpip.h and openjpip.c can't use index_t as a convenience typedef,
because OI inherited index_t in sys/types.h from Solaris.  Adjust to
use the underlying index_param_t instead.

diff -ur openjpeg-2.3.1.orig/src/lib/openjpip/openjpip.h openjpeg-2.3.1/src/lib/openjpip/openjpip.h
--- openjpeg-2.3.1.orig/src/lib/openjpip/openjpip.h	2019-04-02 07:45:15.000000000 +0000
+++ openjpeg-2.3.1/src/lib/openjpip/openjpip.h	2019-06-10 18:57:32.089518326 +0000
@@ -281,23 +281,20 @@
  *  test the format of index (cidx) box in JP2 file
  */
 
-/** Redefinition of index parameters*/
-typedef index_param_t index_t;
-
 /**
  * Parse JP2 file and get index information from cidx box inside
  *
  * @param[in] fd file descriptor of the JP2 file
  * @return       pointer to the generated structure of index parameters
  */
-OPJ_API index_t * OPJ_CALLCONV get_index_from_JP2file(int fd);
+OPJ_API index_param_t * OPJ_CALLCONV get_index_from_JP2file(int fd);
 
 /**
  * Destroy index parameters
  *
  * @param[in,out] idx addressof the index pointer
  */
-OPJ_API void OPJ_CALLCONV destroy_index(index_t **idx);
+OPJ_API void OPJ_CALLCONV destroy_index(index_param_t **idx);
 
 
 /**
@@ -305,7 +302,7 @@
  *
  * @param[in] index index parameters
  */
-OPJ_API void OPJ_CALLCONV output_index(index_t *index);
+OPJ_API void OPJ_CALLCONV output_index(index_param_t *index);
 
 #endif /*SERVER*/
 
diff -ur openjpeg-2.3.1.orig/src/lib/openjpip/openjpip.c openjpeg-2.3.1/src/lib/openjpip/openjpip.c
--- openjpeg-2.3.1.orig/src/lib/openjpip/openjpip.c	2019-04-02 07:45:15.000000000 +0000
+++ openjpeg-2.3.1/src/lib/openjpip/openjpip.c	2019-06-10 18:58:14.867415880 +0000
@@ -443,7 +443,7 @@
     opj_free(*dec);
 }
 
-index_t * OPJ_CALLCONV get_index_from_JP2file(int fd)
+index_param_t * OPJ_CALLCONV get_index_from_JP2file(int fd)
 {
     char *data;
 
@@ -471,12 +471,12 @@
     return parse_jp2file(fd);
 }
 
-void OPJ_CALLCONV destroy_index(index_t **idx)
+void OPJ_CALLCONV destroy_index(index_param_t **idx)
 {
     delete_index(idx);
 }
 
-void OPJ_CALLCONV output_index(index_t *index)
+void OPJ_CALLCONV output_index(index_param_t *index)
 {
     print_index(*index);
 }
diff -ur openjpeg-2.3.1.orig/src/bin/jpip/opj_jpip_test.c openjpeg-2.3.1/src/bin/jpip/opj_jpip_test.c
--- openjpeg-2.3.1.orig/src/bin/jpip/opj_jpip_test.c	2019-04-02 07:45:15.000000000 +0000
+++ openjpeg-2.3.1/src/bin/jpip/opj_jpip_test.c	2019-06-10 18:58:50.711326186 +0000
@@ -52,7 +52,7 @@
 main(int argc, char *argv[])
 {
     int fd;
-    index_t *jp2idx;
+    index_param_t *jp2idx;
     if (argc < 2) {
         return 1;
     }