From: Paolo Bonzini <bonzini@gnu.org>
To: Brandon Casey <casey@nrlssc.navy.mil>
Cc: Nicolas Sebrecht <nicolas.s.dev@gmx.fr>,
git@vger.kernel.org, Johannes Sixt <j6t@kdbg.org>,
Jeff King <peff@peff.net>, David Syzdek <david@syzdek.net>,
Junio C Hamano <gitster@pobox.com>,
Jakub Narebski <jnareb@gmail.com>
Subject: Re: [PATCH] configure: use AC_SEARCH_LIBS instead of AC_CHECK_LIB
Date: Tue, 21 Jul 2009 17:20:25 +0200 [thread overview]
Message-ID: <4A65DCB9.3030207@gnu.org> (raw)
In-Reply-To: <6WnEB0at_uuAu9kicWjrHLsBbTv58WtCNOANkKzk-SqTgqjuWyh8WA@cipher.nrlssc.navy.mil>
> With AC_SEARCH_LIBS, which of [action-if-found] or [action-if-not-found]
> is executed if the function is found in the standard c library i.e. "calling
> `AC_LINK_IFELSE([AC_LANG_CALL([], [function])])' first with no libraries"?
> Is the answer neither? If the answer is [action-if-found], won't the
> NEEDS_LIBGEN=YesPlease be set when the function is found in the c library?
It evaluates the action-if-found and adds nothing to LIBS. Instead, if
it is found in a library, it evaluates the action-if-found after adding
(actually prepending) -lBLAH to LIBS.
Paolo
next prev parent reply other threads:[~2009-07-21 15:20 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-18 13:45 [test failure] t4114 binary file becomes symlink Nicolas Sebrecht
2009-07-18 13:56 ` Jeff King
2009-07-18 14:16 ` [test failure] " Nicolas Sebrecht
2009-07-18 15:31 ` Jeff King
2009-07-18 18:46 ` Junio C Hamano
2009-07-18 20:39 ` Nicolas Sebrecht
2009-07-18 23:18 ` Linus Torvalds
2009-07-18 19:06 ` Johannes Sixt
2009-07-18 20:17 ` Nicolas Sebrecht
2009-07-18 21:13 ` Nicolas Sebrecht
2009-07-19 10:33 ` ./configure misdetects SNPRINTF_RETURNS_BOGUS (was: [test failure] t4114 binary file becomes symlink) Jakub Narebski
2009-07-19 12:48 ` [PATCH] configure: use AC_SEARCH_LIBS instead of AC_CHECK_LIB Nicolas Sebrecht
2009-07-19 13:14 ` [PATCH] " Nicolas Sebrecht
2009-07-19 16:13 ` Junio C Hamano
2009-07-19 22:53 ` Eric Blake
2009-07-21 15:04 ` [PATCH] " Brandon Casey
2009-07-21 15:12 ` Brandon Casey
2009-07-21 15:20 ` Paolo Bonzini [this message]
2009-07-21 15:34 ` Brandon Casey
2009-07-21 20:23 ` [PATCH] configure.ac: rework/fix the NEEDS_RESOLV and NEEDS_LIBGEN tests Brandon Casey
2009-07-21 20:33 ` Junio C Hamano
2009-07-22 14:59 ` Brandon Casey
2009-07-22 22:15 ` [PATCH] config.mak.in: continue fixing NEEDS_LIBGEN autoconfigure feature Brandon Casey
2009-07-22 22:35 ` Junio C Hamano
2009-07-23 16:22 ` Brandon Casey
2009-07-18 22:03 ` [test failure] Re: t4114 binary file becomes symlink Johannes Sixt
2009-07-18 22:29 ` Jeff King
2009-07-18 22:51 ` Nicolas Sebrecht
2009-07-19 11:01 ` Johannes Sixt
2009-07-20 9:09 ` Jeff King
2009-07-20 20:51 ` Johannes Sixt
2009-07-20 21:56 ` Linus Torvalds
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