Package: libasound2-dev
Version: 1.0.19-1
Severity: normal
Hello,
So as to include sound support in the debian installer for speech
synthesis support but save space, I am trying to link libasound.a
statically. This however does not work: at runtime,
snd_dlsym("_snd_ctl_hw_open") fails, and indeed
$ nm /usr/lib/libasound.a | grep _snd_ctl_hw_open
0000000000000001 C __snd_ctl_hw_open_dlsym_control_001
00000000000007a0 T _snd_ctl_hw_open
The _snd_dlsym_constructor__snd_ctl_hw_open_dlsym_control_001
constructor that adds the symlink does not exist. That is because of
the way things are built, see this exerpt of the buildd log:
/bin/sh ../../libtool --tag=CC --mode=compile gcc -m32 -DHAVE_CONFIG_H -I.
-I../../../src/control -I../../include -I../../../include -g -Wall -O2 -MT
control_hw.lo -MD -MP -MF .deps/control_hw.Tpo -c -o control_hw.lo
../../../src/control/control_hw.c
gcc -m32 -DHAVE_CONFIG_H -I. -I../../../src/control -I../../include
-I../../../include -g -Wall -O2 -MT control_hw.lo -MD -MP -MF
.deps/control_hw.Tpo -c ../../../src/control/control_hw.c -fPIC -DPIC -o
.libs/control_hw.o
gcc -m32 -DHAVE_CONFIG_H -I. -I../../../src/control -I../../include
-I../../../include -g -Wall -O2 -MT control_hw.lo -MD -MP -MF
.deps/control_hw.Tpo -c ../../../src/control/control_hw.c -o control_hw.o
>/dev/null 2>&1
mv -f .deps/control_hw.Tpo .deps/control_hw.Plo
...
/bin/sh ../../libtool --tag=CC --mode=link gcc -m32 -g -Wall -O2 -o
libcontrol.la cards.lo tlv.lo namehint.lo hcontrol.lo control.lo control_hw.lo
setup.lo control_symbols.lo control_shm.lo control_ext.lo
ar cru .libs/libcontrol.a .libs/cards.o .libs/tlv.o .libs/namehint.o
.libs/hcontrol.o .libs/control.o .libs/control_hw.o .libs/setup.o
.libs/control_symbols.o .libs/control_shm.o .libs/control_ext.o
ranlib .libs/libcontrol.a
creating libcontrol.la
The non-PIC object is built but there no .a including is built. Later on, the
creation of libasound.a:
rm -fr .libs/libasound.lax/libcontrol.a
mkdir .libs/libasound.lax/libcontrol.a
(cd .libs/libasound.lax/libcontrol.a && ar x
/build/buildd/alsa-lib-1.0.19/bibuild/src/control/.libs/libcontrol.a)
ar cru .libs/libasound.a conf.o confmisc.o input.o output.o async.o error.o
dlmisc.o socket.o shmarea.o userfile.o names.o
.libs/libasound.lax/libcontrol.a/namehint.o
.libs/libasound.lax/libcontrol.a/control_symbols.o
.libs/libasound.lax/libcontrol.a/control_shm.o
.libs/libasound.lax/libcontrol.a/tlv.o .libs/libasound.lax/libcontrol.a/setup.o
.libs/libasound.lax/libcontrol.a/control_hw.o
.libs/libasound.lax/libcontrol.a/cards.o
.libs/libasound.lax/libcontrol.a/hcontrol.o
.libs/libasound.lax/libcontrol.a/control_ext.o
.libs/libasound.lax/libcontrol.a/control.o
.libs/libasound.lax/libmixer.a/simple_abst.o
.libs/libasound.lax/libmixer.a/simple.o .libs/libasound.lax/libmixer.a/mixer.o
.libs/libasound.lax/libmixer.a/simple_none.o
.libs/libasound.lax/libmixer.a/bag.o .libs/libasound.lax/libpcm.a/pcm_empty.o
.libs/libasound.lax/libpcm.a/pcm_multi.o
.libs/libasound.lax/libpcm.a/pcm_generic.o
.libs/libasound.lax/libpcm.a/pcm_hw.o .libs/libasound.lax/libpcm.a/pcm_route.o
.libs/libasound.lax/libpcm.a/pcm_symbols.o
.libs/libasound.lax/libpcm.a/interval.o .libs/libasound.lax/libpcm.a/pcm_copy.o
.libs/libasound.lax/libpcm.a/pcm_extplug.o
.libs/libasound.lax/libpcm.a/pcm_null.o
.libs/libasound.lax/libpcm.a/pcm_simple.o
.libs/libasound.lax/libpcm.a/pcm_rate.o
.libs/libasound.lax/libpcm.a/pcm_plugin.o
.libs/libasound.lax/libpcm.a/pcm_ioplug.o
.libs/libasound.lax/libpcm.a/pcm_mulaw.o
.libs/libasound.lax/libpcm.a/pcm_iec958.o
.libs/libasound.lax/libpcm.a/pcm_file.o
.libs/libasound.lax/libpcm.a/pcm_linear.o
.libs/libasound.lax/libpcm.a/pcm_misc.o
.libs/libasound.lax/libpcm.a/pcm_lfloat.o
.libs/libasound.lax/libpcm.a/pcm_asym.o .libs/libasound.lax/libpcm.a/pcm_dmix.o
.libs/libasound.lax/libpcm.a/pcm_params.o
.libs/libasound.lax/libpcm.a/pcm_hooks.o .libs/libasound.lax/libpcm.a/pcm_shm.o
.libs/libasound.lax/libpcm.a/pcm_rate_linear.o
.libs/libasound.lax/libpcm.a/atomic.o .libs/libasound.lax/libpcm.a/pcm.o
.libs/libasound.lax/libpcm.a/pcm_softvol.o
.libs/libasound.lax/libpcm.a/pcm_direct.o
.libs/libasound.lax/libpcm.a/pcm_ladspa.o
.libs/libasound.lax/libpcm.a/pcm_mmap.o
.libs/libasound.lax/libpcm.a/pcm_dshare.o .libs/libasound.lax/libpcm.a/mask.o
.libs/libasound.lax/libpcm.a/pcm_meter.o
.libs/libasound.lax/libpcm.a/pcm_alaw.o
.libs/libasound.lax/libpcm.a/pcm_mmap_emul.o
.libs/libasound.lax/libpcm.a/pcm_share.o
.libs/libasound.lax/libpcm.a/pcm_adpcm.o
.libs/libasound.lax/libpcm.a/pcm_plug.o
.libs/libasound.lax/libpcm.a/pcm_dsnoop.o
.libs/libasound.lax/libtimer.a/timer_symbols.o
.libs/libasound.lax/libtimer.a/timer_query_hw.o
.libs/libasound.lax/libtimer.a/timer.o
.libs/libasound.lax/libtimer.a/timer_hw.o
.libs/libasound.lax/libtimer.a/timer_query.o
.libs/libasound.lax/librawmidi.a/rawmidi.o
.libs/libasound.lax/librawmidi.a/rawmidi_hw.o
.libs/libasound.lax/librawmidi.a/rawmidi_symbols.o
.libs/libasound.lax/librawmidi.a/rawmidi_virt.o
.libs/libasound.lax/libhwdep.a/hwdep_symbols.o
.libs/libasound.lax/libhwdep.a/hwdep_hw.o
.libs/libasound.lax/libhwdep.a/hwdep.o .libs/libasound.lax/libseq.a/seq.o
.libs/libasound.lax/libseq.a/seq_midi_event.o
.libs/libasound.lax/libseq.a/seq_hw.o
.libs/libasound.lax/libseq.a/seq_symbols.o
.libs/libasound.lax/libseq.a/seq_event.o .libs/libasound.lax/libseq.a/seqmid.o
.libs/libasound.lax/libseq.a/seq_old.o .libs/libasound.lax/libalisp.a/alisp.o
.libs/libasound.lax/libcompat.a/empty.o
ranlib .libs/libasound.a
rm -fr .libs/libasound.lax
creating libasound.la
uses the PIC-compiled object, not the non-PIC-compiled one, thus the
non-existence of the constructor.
I'm far from at ease with libtool, is that a know bug, or perhaps a
missing bit in the alsa-lib Makefile.am?
Samuel
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1,
'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.29 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages libasound2-dev depends on:
ii libasound2 1.0.19-1 shared library for ALSA applicatio
ii libc6-dev [libc-dev] 2.9-4 GNU C Library: Development Librari
libasound2-dev recommends no packages.
Versions of packages libasound2-dev suggests:
pn libasound2-doc <none> (no description available)
-- no debconf information
--
Samuel
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