From 13028531b6f7d957a753f57c1d29165ec421bd19 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 4 Mar 2016 05:44:17 -0800
Subject: Add a comment in sysdeps/x86_64/Makefile

Mention recursive calls when ENTRY is used in _mcount.S.

	* sysdeps/x86_64/Makefile (sysdep_noprof): Add a comment.
---
 sysdeps/x86_64/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 9fcadd8a57..788e4fc591 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -7,6 +7,9 @@ endif
 
 ifeq ($(subdir),gmon)
 sysdep_routines += _mcount
+# We cannot compile _mcount.S with -pg because that would create
+# recursive calls when ENTRY is used.  Just copy the normal static
+# object.
 sysdep_noprof += _mcount
 endif
 
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