failed attempt at GDAL using PROJ from Sep 2017 (not quite proj 5.0.0)

ogrct.cpp.diff

--- a/ogrct.cpp	2018-01-22 15:11:39.000000000 -0800
+++ b/ogrct.cpp	2018-03-01 09:44:21.000000000 -0800
@@ -41,6 +41,7 @@
 #include "ogr_srs_api.h"
 
 #ifdef PROJ_STATIC
+#include "proj.h"
 #include "proj_api.h"
 #endif
 
@@ -125,14 +126,14 @@
 class OGRProj4CT : public OGRCoordinateTransformation
 {
     OGRSpatialReference *poSRSSource;
-    void        *psPJSource;
+    PJ        *psPJSource;
     bool        bSourceLatLong;
     double      dfSourceToRadians;
     bool        bSourceWrap;
     double      dfSourceWrapLong;
 
     OGRSpatialReference *poSRSTarget;
-    void        *psPJTarget;
+    PJ        *psPJTarget;
     bool        bTargetLatLong;
     double      dfTargetFromRadians;
     bool        bTargetWrap;
@@ -324,14 +325,14 @@
  */
 static char *OCTProj4NormalizeInternal( const char *pszProj4Src )
 {
-    projPJ psPJSource = pfn_pj_init_plus( pszProj4Src );
+    PJ *psPJSource = proj_create(PJ_DEFAULT_CTX, pszProj4Src);
 
     if( psPJSource == nullptr )
         return CPLStrdup( pszProj4Src );
 
     char *pszNewProj4Def = pfn_pj_get_def( psPJSource, 0 );
 
-    pfn_pj_free( psPJSource );
+    proj_destroy(psPJSource);
 
     if( pszNewProj4Def == nullptr )
         return CPLStrdup( pszProj4Src );
@@ -546,22 +547,22 @@
     if( pjctx != nullptr )
     {
         if( psPJSource != nullptr )
-            pfn_pj_free( psPJSource );
+            proj_destroy(psPJSource);
 
         if( psPJTarget != nullptr )
-            pfn_pj_free( psPJTarget );
+            proj_destroy( psPJTarget );
 
-        pfn_pj_ctx_free(pjctx);
+        pj_ctx_free(pjctx);
     }
     else
     {
         CPLMutexHolderD( &hPROJMutex );
 
         if( psPJSource != nullptr )
-            pfn_pj_free( psPJSource );
+            proj_destroy( psPJSource );
 
         if( psPJTarget != nullptr )
-            pfn_pj_free( psPJTarget );
+            proj_destroy(psPJTarget);
     }
 
     CPLFree(padfOriX);