lib: bt_version_get_extra(): return `NULL` if none instead of empty str.

[babeltrace.git] / src / lib / babeltrace2.c

diff --git a/src/lib/babeltrace2.c b/src/lib/babeltrace2.c
index 14572c29d2484131d768c0d5dab614e6c41747f5..8216cd11ad05a29a5baa66f917734eaa0445a639 100644 (file)
--- a/src/lib/babeltrace2.c
+++ b/src/lib/babeltrace2.c
@@ -24,6 +24,7 @@
 
 #include <babeltrace2/babeltrace.h>
 #include <stdlib.h>
+#include <string.h>
 
 unsigned int bt_version_get_major(void)
 {
@@ -41,5 +42,5 @@ unsigned int bt_version_get_patch(void) {
 
 const char *bt_version_get_extra(void)
 {
-       return BT_VERSION_EXTRA;
+       return strlen(BT_VERSION_EXTRA) == 0 ? NULL : BT_VERSION_EXTRA;
 }