From cbf36952d8c227aa5e46acf8643458a7fd51d473 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Thu, 22 Oct 2009 12:12:24 +0200
Subject: build: prohibit direct use of readlink or readlinkat

* cfg.mk (sc_prohibit_readlink): New rule.
Suggested by Eric Blake.
---
 cfg.mk | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/cfg.mk b/cfg.mk
index 5de2f37d5..807d3c9c4 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -191,6 +191,12 @@ sc_no_exec_perl_coreutils:
 	      exit 1; } || :;						\
 	fi
 
+# Don't use "readlink" or "readlinkat" directly
+sc_prohibit_readlink:
+	@re='\<readlink(at)? \('					\
+	msg='do not use readlink(at); use via xreadlink or areadlink*'	\
+	  $(_prohibit_regexp)
+
 # Ensure that date's --help output stays in sync with the info
 # documentation for GNU strftime.  The only exception is %N,
 # which date accepts but GNU strftime does not.
-- 
cgit v1.2.3-54-g00ecf