Not all libc implementations define ssize_t as part of stdio.h like
glibc does since the standard only requires this type to be defined by
unistd.h and sys/types.h. For this reason the perf build is currently
broken for toolchains based on uClibc, for instance.

Include sys/types.h explicitly to fix that.

Fixes: 378ef0f5d9d7 ("perf build: Use libtraceevent from the system")
Signed-off-by: Jesus Sanchez-Palencia <jesussanp@google.com>
---
 tools/perf/util/trace-event.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index add6c5d9531c..9b3cd79cca12 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -4,6 +4,7 @@
 
 #include <stdbool.h>
 #include <stdio.h>
+#include <sys/types.h>
 #include <linux/types.h>
 
 struct evlist;
-- 
2.39.0.314.g84b9a713c41-goog