From 8cdb52cb9598c2b029851f7ca97310a81e1bc6ad Mon Sep 17 00:00:00 2001
From: Ken Raeburn <raeburn@mit.edu>
Date: Wed, 20 Apr 2005 03:10:12 +0000
Subject: [PATCH] Compute reltopdir at autoconf time instead of at configure
 time.  This has the happy side effect of stopping autoreconf from creating
 directories named "$ac_config_fragdir" all over the source tree.

* aclocal.m4 (fileexists, K5_TOPDIR): New macros.
(V5_SET_TOPDIR): Don't test for AC_LOCALDIR any more.  Use K5_TOPDIR computed
at autoconf time, but still verify that the contents are what we expect.  Don't
use shell variables in the argument to AC_CONFIG_AUX_DIR.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@17184 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/ChangeLog  |  8 ++++++++
 src/aclocal.m4 | 45 +++++++++++++++++++++------------------------
 2 files changed, 29 insertions(+), 24 deletions(-)

diff --git a/src/ChangeLog b/src/ChangeLog
index edd4b714c..d0573ef07 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,11 @@
+2005-04-19  Ken Raeburn  <raeburn@mit.edu>
+
+	* aclocal.m4 (fileexists, K5_TOPDIR): New macros.
+	(V5_SET_TOPDIR): Don't test for AC_LOCALDIR any more.  Use
+	K5_TOPDIR computed at autoconf time, but still verify that the
+	contents are what we expect.  Don't use shell variables in the
+	argument to AC_CONFIG_AUX_DIR.
+
 2005-03-25  Ken Raeburn  <raeburn@mit.edu>
 
 	* configure.in: Don't check for getpwnam_r and getpwuid_r in the
diff --git a/src/aclocal.m4 b/src/aclocal.m4
index afa8ed068..f0cedca41 100644
--- a/src/aclocal.m4
+++ b/src/aclocal.m4
@@ -1,5 +1,5 @@
 AC_PREREQ(2.52)
-AC_COPYRIGHT([Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+AC_COPYRIGHT([Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
 Massachusetts Institute of Technology.
 ])
 dnl
@@ -7,37 +7,34 @@ dnl Figure out the top of the source and build trees.  We depend on localdir
 dnl being a relative pathname; we could make it general later, but for now 
 dnl this is good enough.
 dnl
+dnl esyscmd([test -r aclocal.m4 && echo YES])
+define([fileexists],[dnl
+pushdef([x],esyscmd([if test -r $1; then echo YES;else echo NO; fi]))dnl
+dnl Strip out newline.
+ifelse(x,[YES
+],[YES],x,[NO
+],[NO],UNKNOWN)[]popdef([x])])
+define([K5_TOPDIR],dnl
+ifelse(fileexists(./aclocal.m4),YES,[.],[dnl
+ifelse(fileexists(../aclocal.m4),YES,[..],[dnl
+ifelse(fileexists(../../aclocal.m4),YES,[../..],[dnl
+ifelse(fileexists(../../../aclocal.m4),YES,[../../..],[dnl
+ifelse(fileexists(../../../../aclocal.m4),YES,[../../../..],[dnl
+errprint(__file__:__line__: Cannot find path to aclocal.m4[
+])m4exit(1)UNKNOWN])])])])]))
+dnl
 AC_DEFUN(V5_SET_TOPDIR,[dnl
-ifdef([AC_LOCALDIR], [dnl AC_LOCALDIR exists in 2.13, but not newer autoconfs.
-ac_reltopdir=AC_LOCALDIR
-case "$ac_reltopdir" in 
-/*)
-	echo "Configure script built with absolute localdir pathname"
-	exit 1
-	;;
-"")
-	ac_reltopdir=.
-	;;
-esac
-],[
-ac_reltopdir=
-for x in . .. ../.. ../../.. ../../../..; do
-	if test "x$ac_reltopdir" = "x" -a -r "$srcdir/$x/aclocal.m4" ; then
-		ac_reltopdir=$x
-	fi
-done
-if test "x$ac_reltopdir" = "x"; then
-	echo "Configure could not determine the relative topdir"
-	exit 1
+ac_reltopdir="K5_TOPDIR"
+if test ! -r "$srcdir/K5_TOPDIR/aclocal.m4"; then
+  AC_MSG_ERROR([Configure could not determine the relative topdir])
 fi
-])
 ac_topdir=$srcdir/$ac_reltopdir
 ac_config_fragdir=$ac_reltopdir/config
 krb5_pre_in=$ac_config_fragdir/pre.in
 krb5_post_in=$ac_config_fragdir/post.in
 # echo "Looking for $srcdir/$ac_config_fragdir"
 if test -d "$srcdir/$ac_config_fragdir"; then
-  AC_CONFIG_AUX_DIR($ac_config_fragdir)
+  AC_CONFIG_AUX_DIR(K5_TOPDIR/config)
 else
   AC_MSG_ERROR([can not find config/ directory in $ac_reltopdir])
 fi
-- 
2.26.2