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According to Monty Taylor on 5/13/2009 1:32 PM:
Hello Monty, and sorry for the delay,
>>> Obviously would need a -I${top_srcdir}. I'm fine with hacking that in to
>>> the test - except there doesn't seem to be an available autoconf
>>> variable I can use to fill in the value of top_srcdir in that context.
>> You can use $srcdir, and some other variables documented in
>> info Autoconf "Configuration Actions"
>
> AWESOME. Exactly what I was looking for.
>
>> Maybe the manual should state that they're also available during the
>> execution of configure, as opposed to only at config.status time.
>
> Perhaps ... it certainly was not evident to me when looking through the
> manual that I should have looked in that section.
Does this help?
- --
Don't work too hard, make some time for fun as well!
Eric Blake ebb9@xxxxxxx
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>From 58cbe7b1eade23c6106a0180e75d87b1cc1967b3 Mon Sep 17 00:00:00 2001
From: Eric Blake <ebb9@xxxxxxx>
Date: Fri, 10 Jul 2009 06:11:24 -0600
Subject: [PATCH] Document that $srcdir can be used during configure.
* doc/autoconf.texi (Preset Output Variables): Add a paragraph.
* THANKS: UPdate.
Reported by Monty Taylor.
Signed-off-by: Eric Blake <ebb9@xxxxxxx>
---
ChangeLog | 7 +++++++
doc/autoconf.texi | 9 ++++++++-
2 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index d256710..6fb2622 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-07-10 Eric Blake <ebb9@xxxxxxx>
+
+ Document that $srcdir can be used during configure.
+ * doc/autoconf.texi (Preset Output Variables): Add a paragraph.
+ * THANKS: UPdate.
+ Reported by Monty Taylor.
+
2009-07-09 Eric Blake <ebb9@xxxxxxx>
Fix test typo.
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 3528f53..2fefd58 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -2180,7 +2180,6 @@ Configuration Actions
The name of the top source directory, assuming that the working
directory is the current build directory.
-
@item ac_top_build_prefix
The name of the top build directory, assuming that the working
directory is the current build directory.
@@ -2332,6 +2331,14 @@ Preset Output Variables
precious variables (@pxref{Setting Output Variables},
@code{AC_ARG_VAR}).
+The preset variables which are available during @file{config.status}
+(@pxref{Configuration Actions}) may also be used during
+@command{configure} tests. For example, it is permissible to reference
+@samp{$srcdir} when constructing an option @option{-I} list of include
+directories. When used in this manner, coupled with the fact that
+@command{configure} is always run from the top build directory, it is
+sufficient to use just @samp{$srcdir} instead of @samp{$top_srcdir}.
+
@c Just say no to ASCII sorting! We're humans, not computers.
@c These variables are listed as they would be in a dictionary:
@c actor
--
1.6.3.3.334.g916e1
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