Takashi,
Neither patch went in without some tweaking by hand, but this could be
mangling from email or my inexperience. At this point, there are only two
errors left:
rootfs/usr/lib/libasound.a(conf.o): In function
`snd_config_update_free_global':
alsa-lib/alsa-lib-1.0.13/src/conf.c:3131: undefined reference to
`pthread_mutex_lock'
alsa-lib/alsa-lib-1.0.13/src/conf.c:3138: undefined reference to
`pthread_mutex_unlock'
rootfs/usr/lib/libasound.a(conf.o): In function `snd_config_update':
alsa-lib/alsa-lib-1.0.13/src/conf.c:3102: undefined reference to
`pthread_mutex_lock'
alsa-lib/alsa-lib-1.0.13/src/conf.c:3104: undefined reference to
`pthread_mutex_unlock'
I'm fairly confident I can follow your examples and get rid of these. A
very big THANK YOU! for all your help!
John
>From: Takashi Iwai <tiwai@xxxxxxx>
>To: "r10 kindsofpeople" <r10kindsofpeople@xxxxxxxxxxx>
>CC: alsa-user@xxxxxxxxxxxxxxxxxxxxx, benoit.fouet@xxxxxxxxxxxxxx
>Subject: Re: alsa-lib: alsa.pc's Libs shouldn't contain
>-lm -ldl -lpthread
>Date: Tue, 21 Nov 2006 18:49:00 +0100
>
>At Tue, 21 Nov 2006 18:18:24 +0100,
>I wrote:
> >
> > At Tue, 21 Nov 2006 09:58:01 -0600,
> > r10 kindsofpeople wrote:
> > >
> > > I'm further along on my goal, but now even more confused.
> > >
> > > Benoit's comment about 'plug-ins' sparked the thought that, since my
> > > interest is in midi, not audio, I could try --disable-pcm. This
>turned out
> > > to be insufficient, but combined with --disable-mixer, alsa-lib now
>builds
> > > without the -ldl errors.
> > >
> > > This turned out to be a small victory, however. When I try to link my
> > > application with the resulting asound library, I'm back to having
>pthread
> > > and dl undefined references, and also snd_pcm_async among others. The
> > > application only makes 'snd_seq*' calls, but I haven't tried tracing
>them to
> > > see what they call.
> >
> > Does the patch below fix the references?
>
>In addition, the following patch may work for you.
>The configure checks libdl and libpthread. Together with
>--with-softfloat option, all three libs will be disabled.
>Give it a try.
>
>
>Takashi
>
>diff -r 1c84c4d3c803 configure.in
>--- a/configure.in Thu Nov 16 07:49:24 2006 +0100
>+++ b/configure.in Tue Nov 21 18:44:28 2006 +0100
>@@ -147,6 +147,23 @@ 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 1c84c4d3c803 src/Makefile.am
>--- a/src/Makefile.am Thu Nov 16 07:49:24 2006 +0100
>+++ b/src/Makefile.am Tue Nov 21 18:24:07 2006 +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) $(VSYMS)
>
>diff -r 1c84c4d3c803 src/dlmisc.c
>--- a/src/dlmisc.c Thu Nov 16 07:49:24 2006 +0100
>+++ b/src/dlmisc.c Tue Nov 21 18:42:40 2006 +0100
>@@ -53,13 +53,19 @@ void *snd_dlopen(const char *name, int m
> if (name == NULL)
> return &snd_dlsym_start;
> #else
>+#ifdef HAVE_LIBDL
> if (name == NULL) {
> Dl_info dlinfo;
> if (dladdr(snd_dlopen, &dlinfo) > 0)
> name = dlinfo.dli_fname;
> }
> #endif
>+#endif
>+#ifdef HAVE_LIBDL
> return dlopen(name, mode);
>+#else
>+ return NULL;
>+#endif
> }
>
> /**
>@@ -76,7 +82,11 @@ int snd_dlclose(void *handle)
> if (handle == &snd_dlsym_start)
> return 0;
> #endif
>+#ifdef HAVE_LIBDL
> return dlclose(handle);
>+#else
>+ return 0;
>+#endif
> }
>
> /**
>@@ -91,6 +101,7 @@ int snd_dlclose(void *handle)
> */
> static int snd_dlsym_verify(void *handle, const char *name, const char
>*version)
> {
>+#ifdef HAVE_LIBDL
> int res;
> char *vname;
>
>@@ -107,6 +118,9 @@ static int snd_dlsym_verify(void *handle
> if (res < 0)
> SNDERR("unable to verify version for symbol %s", name);
> return res;
>+#else
>+ return 0;
>+#endif
> }
>
> /**
>@@ -139,10 +153,14 @@ void *snd_dlsym(void *handle, const char
> return NULL;
> }
> #endif
>+#ifdef HAVE_LIBDL
> err = snd_dlsym_verify(handle, name, version);
> if (err < 0)
> return NULL;
> return dlsym(handle, name);
>+#else
>+ return NULL;
>+#endif
> }
>
> /*
>diff -r 1c84c4d3c803 utils/alsa.pc.in
>--- a/utils/alsa.pc.in Thu Nov 16 07:49:24 2006 +0100
>+++ b/utils/alsa.pc.in Tue Nov 21 18:30:07 2006 +0100
>@@ -8,7 +8,7 @@ Version: @VERSION@
> Version: @VERSION@
> Requires:
> Libs: -L${libdir} -lasound
>-Libs.private: -lm -ldl -lpthread
>+Libs.private: @ALSA_DEPLIBS@
> # -I${includedir}/alsa below is just for backward compatibility
> # (it was set so mistakely in the older version)
> Cflags: -I${includedir} -I${includedir}/alsa
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