added some HAVE_LIBGRIB_API directives

src/gribapi_utilities.c

+#ifdef HAVE_LIBGRIB_API
+
 #include "gribapi_utilities.h"
 
 #include "cdi.h"
@@ -699,3 +701,4 @@ void gribapiGetGrid(grib_handle *gh, grid_t *grid)
   grid->yvals = NULL;
   grid->type  = gridtype;
 }
+#endif

src/gribapi_utilities.h

 #ifndef INCLUDE_GUARD_CDI_GRIBAPI_UTILITIES_H
 #define INCLUDE_GUARD_CDI_GRIBAPI_UTILITIES_H
 
+#ifdef HAVE_LIBGRIB_API
+
 #include "grid.h"
 
 #include <grib_api.h>
@@ -31,3 +33,5 @@ int gribapiGetGridType(grib_handle *gh);
 void gribapiGetGrid(grib_handle *gh, grid_t *grid);
 
 #endif
+
+#endif

src/iterator_grib.c

+#ifdef HAVE_LIBGRIB_API
+
 #include "iterator_grib.h"
 
 #include "cdi_int.h"
@@ -806,3 +808,5 @@ double cdiGribIterator_inqDoubleDefaultValue(CdiGribIterator* me, const char* ke
 {
   return gribGetDoubleDefault(me->gribHandle, key, defaultValue);
 }
+
+#endif

src/iterator_grib.h

@@ -10,7 +10,9 @@
 #include "iterator.h"
 #include "input_file.h"
 
+#ifdef HAVE_LIBGRIB_API
 #include <grib_api.h>
+#endif
 
 typedef struct recordList recordList;
 typedef struct CdiGribIterator {
@@ -20,7 +22,9 @@ typedef struct CdiGribIterator {
   off_t fileOffset;
   unsigned char* gribBuffer;
   size_t bufferSize, curRecordSize;
+#ifdef HAVE_LIBGRIB_API
   grib_handle* gribHandle;
+#endif
 } CdiGribIterator;
 
 CdiIterator* cdiGribIterator_new(const char* path, int filetype);

src/stream_gribapi.c

@@ -714,6 +714,8 @@ static void ensureBufferSize(size_t requiredSize, size_t* curSize, unsigned char
     }
 }
 
+#if  defined  (HAVE_LIBGRIB_API)
+static
 grib_handle* gribapiGetDiskRepresentation(long recsize, size_t* buffersize, unsigned char** gribbuffer, int* outDatatype, int* outCompressionType, long* outUnzipsize)
 {
   int lieee = FALSE;
@@ -763,6 +765,7 @@ grib_handle* gribapiGetDiskRepresentation(long recsize, size_t* buffersize, unsi
     }
   return gh;
 }
+#endif
 
 typedef enum { CHECKTIME_OK, CHECKTIME_SKIP, CHECKTIME_STOP, CHECKTIME_INCONSISTENT } checkTimeResult;
 static checkTimeResult checkTime(stream_t* streamptr, compvar2_t compVar, const DateTime* verificationTime, const DateTime* expectedVTime) {

src/stream_gribapi.h

@@ -3,8 +3,6 @@
 
 #include "cdi_int.h"
 
-#include <grib_api.h>
-
 int gribapiScanTimestep1(stream_t * streamptr);
 int gribapiScanTimestep2(stream_t * streamptr);
 int gribapiScanTimestep(stream_t * streamptr);