# HG changeset patch
# User Bruno Haible <bruno@clisp.org>
# Date 1171772907 0
# Node ID a1e147e70a3b418a85a5c57886024a544906ca39
# Parent  7441ac7493d128459d8daa845231299817c107d8
Emit linker warnings for imaxabs, imaxdiv, strtoimax, strtoumax when these
functions are missing.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -54,7 +54,7 @@
 	(imaxabs, imaxdiv, strtoimax, strtoumax): Don't declare the function
 	if the corresponding module is not enabled. Emit link warnings if
 	the function is used nevertheless.
-	* m4/inttypes_h.m4 (gl_INTTYPES_H): Never use the existing <inttypes.h>.
+	* m4/inttypes.m4 (gl_INTTYPES_H): Never use the existing <inttypes.h>.
 	Don't AC_SUBST HAVE_DECL_IMAXABS, HAVE_DECL_IMAXDIV,
 	HAVE_DECL_STRTOIMAX, HAVE_DECL_STRTOUMAX.
 	(gl_INTTYPES_MODULE_INDICATOR, gl_INTTYPES_H_DEFAULTS): New macros.
diff --git a/m4/inttypes.m4 b/m4/inttypes.m4
--- a/m4/inttypes.m4
+++ b/m4/inttypes.m4
@@ -1,5 +1,5 @@
-# inttypes.m4 serial 7
-dnl Copyright (C) 2006 Free Software Foundation, Inc.
+# inttypes.m4 serial 8
+dnl Copyright (C) 2006-2007 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -133,11 +133,14 @@
 	 ])],
 	 [gl_cv_header_working_inttypes_h=yes])
      fi])
-  if test $gl_cv_header_working_inttypes_h = yes; then
+
+  dnl Override <inttypes.h> always, so that the portability warnings work.
+  if false && test $gl_cv_header_working_inttypes_h = yes; then
     dnl Use the existing <inttypes.h>.
     INTTYPES_H=''
   else
 
+    AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
     dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h.
     if test $ac_cv_header_inttypes_h = yes; then
       gl_ABSOLUTE_HEADER([inttypes.h])
@@ -175,30 +178,46 @@
     else
       HAVE_DECL_IMAXABS=0
     fi
-    AC_SUBST([HAVE_DECL_IMAXABS])
 
     if test "$ac_cv_have_decl_imaxdiv" = yes; then
       HAVE_DECL_IMAXDIV=1
     else
       HAVE_DECL_IMAXDIV=0
     fi
-    AC_SUBST([HAVE_DECL_IMAXDIV])
 
     if test "$ac_cv_have_decl_strtoimax" = yes; then
       HAVE_DECL_STRTOIMAX=1
     else
       HAVE_DECL_STRTOIMAX=0
     fi
-    AC_SUBST([HAVE_DECL_STRTOIMAX])
 
     if test "$ac_cv_have_decl_strtoumax" = yes; then
       HAVE_DECL_STRTOUMAX=1
     else
       HAVE_DECL_STRTOUMAX=0
     fi
-    AC_SUBST([HAVE_DECL_STRTOUMAX])
 
     INTTYPES_H='inttypes.h'
   fi
   AC_SUBST(INTTYPES_H)
 ])
+
+AC_DEFUN([gl_INTTYPES_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_INTTYPES_H_DEFAULTS],
+[
+  GNULIB_IMAXABS=0;      AC_SUBST([GNULIB_IMAXABS])
+  GNULIB_IMAXDIV=0;      AC_SUBST([GNULIB_IMAXDIV])
+  GNULIB_STRTOIMAX=0;    AC_SUBST([GNULIB_STRTOIMAX])
+  GNULIB_STRTOUMAX=0;    AC_SUBST([GNULIB_STRTOUMAX])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DECL_IMAXABS=1;   AC_SUBST([HAVE_DECL_IMAXABS])
+  HAVE_DECL_IMAXDIV=1;   AC_SUBST([HAVE_DECL_IMAXDIV])
+  HAVE_DECL_STRTOIMAX=1; AC_SUBST([HAVE_DECL_STRTOIMAX])
+  HAVE_DECL_STRTOUMAX=1; AC_SUBST([HAVE_DECL_STRTOUMAX])
+])