From: H.Merijn Brand <h.m.brand@xs4all.nl>
Date: Tue, 10 Sep 2002 15:43:53 +0000 (+0000)
Subject: Callback behaviour in hints
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=c5884c5a7813ec61938e7953d7c507670145b965;p=p5sagit%2Fp5-mst-13.2.git

Callback behaviour in hints
Mon, 9 Sep 2002, Allen Smith

p4raw-id: //depot/perl@17892
---

diff --git a/hints/README.hints b/hints/README.hints
index 1d0f35c..9b49a39 100644
--- a/hints/README.hints
+++ b/hints/README.hints
@@ -297,7 +297,11 @@ be circumvented by the use of "call-back units".  That is, the hints
 file can tuck this information away into a file UU/cc.cbu.  Then,
 after Configure prompts the user for the C compiler, it will load in
 and run the UU/cc.cbu "call-back" unit.  See hints/solaris_2.sh for an
-example.
+example. Some callbacks exist for other variables than cc, such as for
+uselongdouble. At the present time, these callbacks are only called if the
+variable in question is defined; however, this may change, so the scheme in
+hints/solaris_2.sh of checking to see if uselongdouble is defined is a good
+idea.
 
 =item Future status