lib: compile liblttng-ctl as C++

[lttng-tools.git] / src / common / spawn-viewer.h

diff --git a/src/common/spawn-viewer.h b/src/common/spawn-viewer.h
index 5789246821202bcff529f2288f81ab88a1b82c78..dc7b7bbcbb0340484c434d8aaa5f77add805bb1c 100644 (file)
--- a/src/common/spawn-viewer.h
+++ b/src/common/spawn-viewer.h
@@ -8,15 +8,27 @@
  *
  */
 
+#include <lttng/lttng-export.h>
 #include <stdbool.h>
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 /*
  * Read the trace by `exec()ing` the provided viewer program if any. If
  * `opt_viewer` is NULL, try to read the trace with the default trace reader.
  * On success, this function doesn't return.
  * Returns -1 if the `opt_viewer` string or the default trace viewer can't be
  * `exec()`.
+ *
+ * This symbol was mistakenly made public before the 2.12 release. It can't
+ * be removed (but it can be stubbed-out if necessary).
  */
-int spawn_viewer(const char *trace_path, char *opt_viewer, bool opt_live_mode);
+LTTNG_EXPORT int spawn_viewer(const char *trace_path, char *opt_viewer, bool opt_live_mode);
+
+#if defined(__cplusplus)
+}
+#endif
 
 #endif /* ifndef LTTNG_SPAWN_VIEWER_H */