From 6f368f2f480c97d4a72f1b22ee7ced0d2456d658 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 2 Jul 2005 11:58:22 +0000
Subject: [PATCH] (sc_obsolete_symbols): New rule. (syntax-check-rules): Add it
 to the list.

---
 Makefile.maint | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Makefile.maint b/Makefile.maint
index b242b67aec..a27690d3e1 100644
--- a/Makefile.maint
+++ b/Makefile.maint
@@ -75,6 +75,7 @@ syntax-check-rules = \
   sc_dd_max_sym_length \
   sc_error_exit_success \
   sc_file_system \
+  sc_obsolete_symbols \
   sc_prohibit_atoi_atof \
   sc_prohibit_jm_in_m4 \
   sc_root_tests \
@@ -147,6 +148,13 @@ sc_file_system:
 	    'rewrite to use "file system"' 1>&2;			\
 	    exit 1; } || :
 
+sc_obsolete_symbols:
+	@( $(CVS_LIST) ) > /dev/null 2>&1 || : &&			\
+	  grep -E '\<(HAVE_(FCNTL|UNISTD)_H)\>'				\
+	     $$($(CVS_LIST) | grep -vEf .x-$@ ) &&			\
+	  { echo '$(ME): do not use HAVE_FCNTL_H or HAVE_UNISTD_H'	\
+		1>&2; exit 1; } || :
+
 # FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
 
 # Each nonempty line must start with a year number, or a TAB.
-- 
2.47.3