Fix g++ errors.

src/async_worker.c

@@ -90,7 +90,7 @@ sema_post(sema_t *s)
 static
 void *workerMain(void *arg)
 {
-  AsyncJob *communicator = arg;
+  AsyncJob *communicator = (AsyncJob *)arg;
 
   while (true)
     {
@@ -137,10 +137,10 @@ int AsyncWorker_init(AsyncManager **jobManager, int threadCount)
   if (*jobManager) return CDI_NOERR;
 
 #ifdef HAVE_LIBPTHREAD
-  *jobManager = malloc(sizeof(AsyncManager));
+  *jobManager = (AsyncManager *)malloc(sizeof(AsyncManager));
   if(!*jobManager) return CDI_ESYSTEM;
   (*jobManager)->workerCount = threadCount;
-  (*jobManager)->communicators = malloc(threadCount*sizeof(AsyncJob));
+  (*jobManager)->communicators = (AsyncJob *)malloc(threadCount*sizeof(AsyncJob));
   if (!(*jobManager)->communicators) xabort("memory allocation failure");
 
   for (int i = 0; i < threadCount; i++) startWorker(&((*jobManager)->communicators[i]));

src/grid.h

@@ -7,11 +7,6 @@
 #include "cdi_key.h"
 #include "cdi_att.h"
 
-extern int (*proj_lonlat_to_lcc_func)();
-extern int (*proj_lcc_to_lonlat_func)();
-extern int (*proj_lonlat_to_stere_func)();
-extern int (*proj_stere_to_lonlat_func)();
-
 typedef unsigned char mask_t;
 
 typedef struct grid_t grid_t;

src/serialize.h

@@ -118,7 +118,7 @@ serializeKeysUnpack(const void *buf, int buf_size, int *position, cdi_keys_t *ke
               buffer = realloc(buffer, buffersize);
             }
           serializeUnpack(buf, buf_size, position, buffer, length, CDI_DATATYPE_TXT, context);
-          cdiDefVarKeyBytes(keysp, key, buffer, length);
+          cdiDefVarKeyBytes(keysp, key, (unsigned char *)buffer, length);
           d2 ^= cdiCheckSum(CDI_DATATYPE_TXT, length, buffer);
         }
       else if (type == KEY_INT)