[PATCH] maint.mk: prohibit inclusion of "intprops.h" without_use

[Jim Meyering]

Another "prohibit header inclusion without use":

>From 8b775146634a9e5614abd5f44bdf9c2225e405ba Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Sun, 21 Mar 2010 14:53:34 +0100
Subject: [PATCH] maint.mk: prohibit inclusion of "intprops.h" without_use

* top/maint.mk (sc_prohibit_intprops_without_use): New rule.
---
 ChangeLog    |    5 +++++
 top/maint.mk |   13 +++++++++++++
 2 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d662425..c3176ac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-03-21  Jim Meyering  <address@hidden>
+
+       maint.mk: prohibit inclusion of "intprops.h" without_use
+       * top/maint.mk (sc_prohibit_intprops_without_use): New rule.
+
 2010-03-20  Bruno Haible  <address@hidden>

        signal: Undefine macro definitions in C++ mode.
diff --git a/top/maint.mk b/top/maint.mk
index 7d84b6c..d2248d8 100644
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -452,6 +452,19 @@ sc_prohibit_signal_without_use:
        re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'          \
          $(_header_without_use)

+# Get the list of symbol names with this:
+# perl -lne '/^# *define (\w+)\(/ and print $1' lib/intprops.h|grep -v '^s'|fmt
+_intprops_names =                                                      \
+  TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT            \
+  TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM          \
+  INT_STRLEN_BOUND INT_BUFSIZE_BOUND
+_intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
+# Prohibit the inclusion of intprops.h without an actual use.
+sc_prohibit_intprops_without_use:
+       @h='"intprops.h"'                                               \
+       re='\<($(_intprops_syms_re)) *\('                               \
+         $(_header_without_use)
+
 sc_obsolete_symbols:
        @re='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'                           \
        msg='do not use HAVE''_FCNTL_H or O'_NDELAY                     \
--
1.7.0.2.455.g91132