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From: | Eric Blake |
Subject: | possible USE_SYSTEM_EXTENSIONS bug [was: installable gnulib library] |
Date: | Mon, 11 Oct 2010 10:14:39 -0600 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100921 Fedora/3.1.4-1.fc13 Mnenhy/0.8.3 Thunderbird/3.1.4 |
[adding bug-autoconf] On 10/10/2010 11:02 PM, Gary V. Vaughan wrote:
Hi Bruce, On 10 Oct 2010, at 22:26, Bruce Korb wrote:The common way to get rid of these warnings is to insert an invocation of gl_USE_SYSTEM_EXTENSIONS at the appropriate place in configure.ac.Could you explicitly define "appropriate place" in the sample above? :) I took a guess, based upon the configure.ac generated by the original "gnulib-tool" invocation.AC_USE_SYSTEM_EXTENSIONS right after AC_INIT can't fail to patch over the bug, unless AC_REQUIRE ordering is badly botched.
AC_USE_SYSTEM_EXTENSIONS may still have upstream bugs, even in autoconf 2.68. Why do I say this? Because my pending patch [1] to fix some brokenness in AC_BEFORE makes the autoconf testsuite fail its AC_USE_SYSTEM_EXTENSIONS test. I still need to investigate why, and whether the gnulib variant gl_USE_SYSTEM_EXTENSIONS is likewise affected.
[1] http://lists.gnu.org/archive/html/bug-autoconf/2010-09/msg00061.html -- Eric Blake address@hidden +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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