From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Marcel Holtmann To: BlueZ development In-Reply-To: <200805042210.42828@mail.frokaschwei.de> References: <200805042210.42828@mail.frokaschwei.de> Date: Fri, 09 May 2008 14:35:54 +0200 Message-Id: <1210336554.28002.26.camel@violet.holtmann.net> Mime-Version: 1.0 Subject: Re: [Bluez-devel] bluez-utils 3.30, uClibc, hcid, plugin handling Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Hi Wolfram, > I had some trouble using hcid from bluez-utils 3.30 on my openwrt-router. > Openwrt uses uClibc, not glibc. > > I discovered the following two problems: > > 1. In eglib/gmodule.c, function g_module_open, line 29 dlopen is used. > The flags for dlopen come from hcid/plugin.c, function plugin_init, line 94. > The flag-value is 0. According to the manpage of dlopen > (http://www.kernel.org/pub/linux/docs/manpages/man-pages-2.79.tar.bz2), > one of RTLD_LAZY or RTLD_NOW has to be set. uClibc checks this and returns an error. > > 2. hcid needs to be linked with -rdynamic or --export-dynamic. Some functions > in the hcid-executable are used by the plugins. Without -rdynamic uClibc > doesn't resolve the symbols in the plugins resulting in a NULL pointer > dereference and a SIGSEGV. Again, its documented in the man-page of > dlopen. this has been fixed a long time ago. However we just recently released bluez-utils-3.31 and that should be fine. Regards Marcel ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel