From 60e845ceef25533bfb60450549bea56a17b1e467 Mon Sep 17 00:00:00 2001
From: Alex Richardson <arichardson@FreeBSD.org>
Date: Mon, 11 Dec 2023 21:10:14 -0800
Subject: [PATCH] jevents: fix bootstrapping on Linux with Clang 16

The glibc fts_open() callback type does not have the second const
qualifier and it appears that Clang 16 errors by default for mismatched
function pointer types. Add an ifdef to handle this case.

Reviewed By:	imp, emaste
Differential Revision: https://reviews.freebsd.org/D43000
---
 lib/libpmc/pmu-events/jevents.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/libpmc/pmu-events/jevents.c b/lib/libpmc/pmu-events/jevents.c
index ff7d3b226932..590b465af400 100644
--- a/lib/libpmc/pmu-events/jevents.c
+++ b/lib/libpmc/pmu-events/jevents.c
@@ -1355,7 +1355,11 @@ int main(int argc, char *argv[])
 #include <fts.h>
 
 static int
+#ifdef __GLIBC__
+fts_compare(const FTSENT **a, const FTSENT **b)
+#else
 fts_compare(const FTSENT * const *a, const FTSENT * const *b)
+#endif
 {
 	return (strcmp((*a)->fts_name, (*b)->fts_name));
 }