From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ciaccia Subject: Re: Static build of alsa-lib Date: Sat, 17 Mar 2007 03:13:06 -0700 (PDT) Message-ID: <879835.22038.qm@web31007.mail.mud.yahoo.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@lists.sourceforge.net Errors-To: alsa-devel-bounces@lists.sourceforge.net To: Takashi Iwai Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Hi Takashi, I downloaded the last snapshot from hg (alsa-lib-hg20070317) and I applied the patch you included in your email. Then I configured alsa-lib as following: ./configure --enable-static --disable-shared --disable-mixer --disable-hwdep --disable-rawmidi --disable-seq --disable-instr --disable-alisp -with-pcm-plugins=no I just need PCM, so I disable all the packages but PCM. Then I compiled my mini application (just snd_pcm_open, configure it and write some data to it) with the following command-line (I'm using gcc 4.1): $ gcc -o test test.c -L/tmp/alsa-lib-hg20070317/src/.libs/ -lasound -lm -lpthread -static and I got the following errors/warnings: /tmp/alsa-lib-hg20070317/src/.libs//libasound.a(control_shm.o): In function `_snd_ctl_shm_open': /tmp/alsa-lib-hg20070317/src/control/control_shm.c:664: warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking /tmp/alsa-lib-hg20070317/src/.libs//libasound.a(dlmisc.o): In function `snd_dlsym_verify': /tmp/alsa-lib-hg20070317/src/dlmisc.c:115: undefined reference to `dlsym' /tmp/alsa-lib-hg20070317/src/.libs//libasound.a(dlmisc.o): In function `snd_dlsym': /tmp/alsa-lib-hg20070317/src/dlmisc.c:159: undefined reference to `dlsym' /tmp/alsa-lib-hg20070317/src/.libs//libasound.a(dlmisc.o): In function `snd_dlclose': /tmp/alsa-lib-hg20070317/src/dlmisc.c:85: undefined reference to `dlclose' /tmp/alsa-lib-hg20070317/src/.libs//libasound.a(dlmisc.o): In function `snd_dlopen': /tmp/alsa-lib-hg20070317/src/dlmisc.c:64: undefined reference to `dlopen' collect2: ld returned 1 exit status Am I doing something wrong?!? Thanks Bye Andrea --- Takashi Iwai wrote: > At Fri, 16 Mar 2007 06:17:00 -0700 (PDT), > Ciaccia wrote: > > > > Hi there, > > I would like to compile an alsa application for an > > embedded system with no shared-libraries support. > My > > application just needs PCM, with no plug-ins, no > mixer > > and no midi and the application should be a > standalone > > executable with no external dependencies, > otherwise it > > will not work. > > > > I tried to compile alsa-lib with static support, > but > > without luck (-ldl is always needed in the gcc > line > > and gcc always prints some weird warnings). Since > I > > don't need external plugins nor ladspa, I think > there > > should be a way to compile an application in a > 100% > > static manner, but I still have to figure out how. > > > > I also found this thread with a similar problem > with > > uClinux > > > http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg18253.html > > but at the end I did not understand how/if the > problem > > was solved. > > > > Do you think it should be possible to compile > alsa-lib > > with no dependencies on dl? How? > > > > Otherwise, would it be possible to write an alsa > > application that does not rely on alsa-lib (i.e., > > by using the alsa kernel APIs directly)? Has > someone > > already tried it? Some hints? > > > > Every hint is extremely welcome > > I worked on this sometime ago, and made a patch to > build alsa-lib > without pthread and libdl. I don't remember why > this wasn't applied. > IIRC, ulibc has the wrappers for pthread and libdl, > so this wasn't > needed at that time in the end. > > Otherwise, it should work. Build with > --enable-static > --disable-shared, --disble-mixer, --disable-hwdep, > etc. > > > Takashi > > diff -r f1203eb7eb48 configure.in > --- a/configure.in Tue Mar 13 10:44:28 2007 +0100 > +++ b/configure.in Fri Mar 16 15:07:51 2007 +0100 > @@ -148,6 +148,23 @@ else > else > AC_MSG_RESULT(no) > fi > + > +AC_CHECK_LIB([dl], [dlsym], [HAVE_LIBDL="yes"]) > +AC_CHECK_LIB([pthread], [pthread_join], > [HAVE_LIBPTHREAD="yes"]) > + > +ALSA_DEPLIBS="" > +if test "$softfloat" != "yes"; then > + ALSA_DEPLIBS="-lm" > +fi > +if test "$HAVE_LIBDL" = "yes"; then > + ALSA_DEPLIBS="$ALSA_DEPLIBS -ldl" > + AC_DEFINE([HAVE_LIBDL], 1, [Have libdl]) > +fi > +if test "$HAVE_LIBPTHREAD" = "yes"; then > + ALSA_DEPLIBS="$ALSA_DEPLIBS -lpthread" > + AC_DEFINE([HAVE_LIBPTHREAD], 1, [Have > libpthread]) > +fi > +AC_SUBST(ALSA_DEPLIBS) > > dnl Check for architecture > AC_MSG_CHECKING(for architecture) > diff -r f1203eb7eb48 include/local.h > --- a/include/local.h Tue Mar 13 10:44:28 2007 +0100 > +++ b/include/local.h Fri Mar 16 15:07:51 2007 +0100 > @@ -36,6 +36,11 @@ > #include "config.h" > #ifdef SUPPORT_RESMGR > #include > +#endif > +#ifdef HAVE_LIBDL > +#include > +#else > +#define RTLD_NOW 0 > #endif > > #define _snd_config_iterator list_head > diff -r f1203eb7eb48 src/Makefile.am > --- a/src/Makefile.am Tue Mar 13 10:44:28 2007 +0100 > +++ b/src/Makefile.am Fri Mar 16 15:07:51 2007 +0100 > @@ -41,7 +41,7 @@ libasound_la_LIBADD += > alisp/libalisp.la > libasound_la_LIBADD += alisp/libalisp.la > endif > SUBDIRS += compat conf > -libasound_la_LIBADD += compat/libcompat.la -lm -ldl > -lpthread > +libasound_la_LIBADD += compat/libcompat.la > @ALSA_DEPLIBS@ > > libasound_la_LDFLAGS = -version-info $(COMPATNUM) > $(VSYMS) > > diff -r f1203eb7eb48 src/async.c > --- a/src/async.c Tue Mar 13 10:44:28 2007 +0100 > +++ b/src/async.c Fri Mar 16 15:07:51 2007 +0100 > @@ -151,9 +151,11 @@ int > snd_async_del_handler(snd_async_hand > if (!list_empty(&handler->hlist)) > goto _end; > switch (handler->type) { > +#ifdef BUILD_PCM > case SND_ASYNC_HANDLER_PCM: > err = snd_pcm_async(handler->u.pcm, -1, 1); > break; > +#endif > case SND_ASYNC_HANDLER_CTL: > err = snd_ctl_async(handler->u.ctl, -1, 1); > break; > diff -r f1203eb7eb48 src/conf.c > --- a/src/conf.c Tue Mar 13 10:44:28 2007 +0100 > +++ b/src/conf.c Fri Mar 16 15:07:51 2007 +0100 > @@ -415,12 +415,13 @@ beginning:

> > > #include > -#include > #include > #include > -#include > #include > #include "local.h" > +#ifdef HAVE_LIBPTHREAD > +#include > +#endif > > #ifndef DOC_HIDDEN > > @@ -3080,7 +3081,9 @@ int > snd_config_update_r(snd_config_t **_ > return 1; > } > > +#ifdef HAVE_LIBPTHREAD > static pthread_mutex_t snd_config_update_mutex = > PTHREAD_MUTEX_INITIALIZER; > +#endif > > /** > * \brief Updates #snd_config by rereading the > global configuration files (if needed). > @@ -3099,9 +3102,13 @@ int snd_config_update(void) > { > int err; > > +#ifdef HAVE_LIBPTHREAD > pthread_mutex_lock(&snd_config_update_mutex); > +#endif > err = snd_config_update_r(&snd_config, > &snd_config_global_update, NULL); > +#ifdef HAVE_LIBPTHREAD > pthread_mutex_unlock(&snd_config_update_mutex); > +#endif > return err; > } > > @@ -3128,15 +3135,18 @@ int > snd_config_update_free(snd_config_up > */ > int snd_config_update_free_global(void) > { > +#ifdef HAVE_LIBPTHREAD > pthread_mutex_lock(&snd_config_update_mutex); > +#endif > if (snd_config) > snd_config_delete(snd_config); > snd_config = NULL; > if (snd_config_global_update) > snd_config_update_free(snd_config_global_update); > snd_config_global_update = NULL; > === message truncated === ____________________________________________________________________________________ Bored stiff? Loosen up... Download and play hundreds of games for free on Yahoo! Games. http://games.yahoo.com/games/front ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV