[PATCH 4/8] Notify snappy unsupporting when disabled

[d.hatayama@xxxxxxxxxxxxxx (HATAYAMA Daisuke)]

Signed-off-by: HATAYAMA Daisuke <d.hatayama at jp.fujitsu.com>
---

 makedumpfile.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/makedumpfile.c b/makedumpfile.c
index 14fd9f6..a47a3ec 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -2538,6 +2538,15 @@ initial(void)
 	}
 #endif
 
+#ifndef USESNAPPY
+	if (info->flag_compress == DUMP_DH_COMPRESSED_SNAPPY) {
+		MSG("'-p' option is disabled, ");
+		MSG("because this binary doesn't support snappy "
+		    "compression.\n");
+		MSG("Try `make USESNAPPY=on` when building.\n");
+	}
+#endif
+
 	if (!is_xen_memory() && info->flag_exclude_xen_dom) {
 		MSG("'-X' option is disable,");
 		MSG("because %s is not Xen's memory core image.\n", info->name_memory);