From d7b0636850624927a41dc801748d40c38513f0ab Mon Sep 17 00:00:00 2001 From: Zack Weinberg Date: Tue, 1 Dec 2020 09:04:26 -0500 Subject: Add a note to NEWS about ac_cv_header_stdlib_h not being set... ... even though HAVE_STDLIB_H is. --- NEWS | 3 +++ 1 file changed, 3 insertions(+) (limited to 'NEWS') 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. -- cgit v1.2.1