build: FreeBSD allow kv_store tools to be build

This requires defining
`EUCLEAN`
`EKEYREJECTED`
which are defined in Linux asm-generic/error.h

Signed-off-by: Willem Jan Withagen <wjw@digiware.nl>

do_freebsd.sh

@@ -48,7 +48,7 @@ fi
 	-D WITH_FUSE=ON \
 	-D WITH_KRBD=OFF \
 	-D WITH_XFS=OFF \
-	-D WITH_KVS=OFF \
+	-D WITH_KVS=ON \
 	-D CEPH_MAN_DIR=man \
 	-D WITH_LIBCEPHFS=OFF \
 	-D WITH_CEPHFS=OFF \

src/include/compat.h

@@ -79,9 +79,15 @@
 /* get PATH_MAX */
 #include <limits.h>
 
+#ifndef EUCLEAN
+#define EUCLEAN 117
+#endif
 #ifndef EREMOTEIO
 #define EREMOTEIO 121
 #endif
+#ifndef EKEYREJECTED
+#define EKEYREJECTED 129
+#endif
 
 #ifndef HOST_NAME_MAX
 #ifdef MAXHOSTNAMELEN 

src/key_value_store/cls_kvs.cc

@@ -5,6 +5,7 @@
  *      Author: Eleanor Cawthon
  */
 
+#include "include/compat.h"
 #include "objclass/objclass.h"
 #include <errno.h>
 #include "key_value_store/kvs_arg_types.h"