From: Zack Weinberg <zackw@panix.com>
Date: Tue, 1 Dec 2020 14:04:26 +0000 (-0500)
Subject: Add a note to NEWS about ac_cv_header_stdlib_h not being set...
X-Git-Tag: v2.69e^0
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7b0636850624927a41dc801748d40c38513f0ab;p=thirdparty%2Fautoconf.git

Add a note to NEWS about ac_cv_header_stdlib_h not being set...

... even though HAVE_STDLIB_H is.
---

diff --git a/NEWS b/NEWS
index 93ac2838..207d89b5 100644
--- a/NEWS
+++ b/NEWS
@@ -146,6 +146,9 @@ GNU Autoconf NEWS - User visible changes.
   For compatibility’s sake, the C preprocessor macros STDC_HEADERS,
   HAVE_STDLIB_H, and HAVE_STRING_H are defined unconditionally.
   These preprocessor macros should be considered obsolescent.
+  However, cache variables like ac_cv_header_stdlib_h are not set;
+  this is intentional, so that AC_CHECK_HEADER([stdlib.h]) will still
+  do a test for the presence of stdlib.h, in case you genuinely need that.
 
   Future releases of Autoconf may reduce the set of headers checked
   for by AC_INCLUDES_DEFAULT.