Shared library problem

After messing around with fonts i ended up with this problem: i cant start gdm.
here's the message i get:
/usr/sbin/gdm-binary: error while loading shared libraries: libfreetype.so.6: cannot open shared object: no such file or directory
tried to install some fonts - same error.
tried to update font cache - same error.
I open up gdm-binary in Midnight Commander and its all like Greek/Chinese in there.
Any help would be good, thank you for your time
Last edited by nikchris (2008-04-11 15:45:49)

pacman -S freetype2

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Unexpected Signal : 11 occurred at PC=0xFED29D44
Function=[Unknown. Nearest: JVM_GetMethodIxExceptionIndexes+0x1994]
Library=/usr/java/jre/lib/sparc/libjvm.so
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0x10000 SblSim
0xff280000 /usr/lib/libnsl.so.1
0xfec00000 /usr/java/jre/lib/sparc/libjvm.so
0xff370000 /usr/lib/libpthread.so.1
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0xff340000 /usr/lib/libw.so.1
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Local Time = Tue Nov 12 09:51:37 2002
Elapsed Time = 29
# HotSpot Virtual Machine Error : 11
# Error ID : 4F530E43505002D5 01
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
# Java VM: Java HotSpot(TM) Client VM (1.4.0_01-b03 mixed mode)
# An error report file has been saved as hs_err_pid3120.log.
# Please refer to the file for further information.
Abort(coredump)
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$ pstack core
core 'core' of 3120: SblSim libaicd.so 127.0.0.1 9999
----------------- lwp# 1 / thread# 1 --------------------
ff1c9764 __sigprocmask (ff1cbf60, 0, 0, 565f8, ff1de000, 0) + 8
ff1be110 _sigon   (565f8, ff1e5930, 6, ffbedba4, 565f8, 6) + d0
ff1c1150 thrpkill (0, 1, 6, ff1de000, 1, ff140450) + f8
ff0cb900 raise (6, 0, 0, ffffffff, ff1403bc, 4) + 40
ff0b58ec abort (ff13c000, ffbedcf8, 0, fffffff8, 4, ffbedd19) + 100
feee2700 ???????? (1, fef98e50, ffbedd98, 0, feffc130, feee1258)
feee12c8 ???????? (60650, b, fed29d44, ffbeeab8, b, 0)
fede77c0 ???????? (fed29d44, ffbeeab8, ffbee800, fed29d44, fed03744, 0)
ff1cb824 __sighndlr (b, ffbeeab8, ffbee800, fede6f38, 5669c, 5668c) + c
ff1c84d8 sigacthandler (b, 565f8, 0, 0, 0, ff1de000) + 708
--- called from signal handler with signal 11 (SIGSEGV) ---
fed29d44 ???????? (0, 60650, 0, 0, 0, 0)
fed2d7d4 ???????? (606e4, 0, 0, ffbeed00, 0, 0)
f172e818 __1cHJNIEnv_JNewObject6MpnH_jclass_pnK_jmethodID_E_pnI_jobject__ (606e4, 0, 0, ffbeed70, 39, 107f90) + 70
f172dbf8 __1cGJEvent2t5B6M_v_ (107f60, f1a877f4, db088, ff0c1c44, 107f48, 0) + 80
f16f2864 __1cGCEvent2t6Mii_v_ (107f60, 0, 1, ff13c000, 107f48, 0) + 7c
f16e62e8 __1cVCISCHelperThreadMutex2t6M_v_ (107f50, 0, 560ac, 30f68, fefe4000, 0) + c0
f16ddc34 __1cLinitGlobals6F_v_ (0, 1, 19a, f1a198ec, f1a198ec, 0) + 5c
f16de4e4 CreateISCDriverInstance (0, 5cc40, 0, 57608, 565e8, 0) + 554
00034f08 __1cJRunSblSim6F_v_ (1, ffbef322, ffbef32c, ff13fc70, 100d4, 0) + 320
00035588 main (4, ffbef1dc, ffbef1f0, 55c00, 0, 0) + 1a8
00018460 _start   (0, 0, 0, 0, 0, 0) + 108
----------------- lwp# 2 / thread# 2 --------------------
ff11e958 _signotifywait (ff1de000, 59, 0, 0, 0, 0) + 8
ff1c2030 thr_yield (0, 0, 0, 0, 0, 0) + 8c
----------------- lwp# 3 --------------------------------
ff1c9774 private___lwp_cond_wait (ff075d70, ff1ded9c, ff1de000, 0, 0, 4) + 8
ff11c554 doorreturn (ff075cb0, ff1ba740, 0, 0, 0, 0) + 68
----------------- lwp# 4 / thread# 4 --------------------
ff11efbc ___lwp_cond_wait (60048, 60030, fe901ad0, 0, 0, fe901ac8) + 8
ff116610 lwpcond_timedwait (1cb8c88, 3dd1157a, fe901ba4, 60030, 60048, 1) + 98
fecfc7d8 ???????? (0, 1, 0, 581b8, feffa26c, 0)
fecfcfd4 ???????? (ff00a15c, feffa4b8, feffa4b4, 0, 0, 0)
fecfccc0 ???????? (d3980, 0, 0, 0, 0, 0)
fecfcbd0 ???????? (d3980, ff1df688, 1, 1, ff1de000, 0)
ff1cb728 threadstart (d3980, 0, 0, 0, 0, 0) + 40
----------------- lwp# 5 --------------------------------
ff11c4fc doorreturn (4, ff1df688, ff1df6a0, 3, ff1de000, 1) + 10
ff1ba740 lwpstart (fea95d70, 0, 6000, ff075b74, 0, 0) + 18
ff1c2030 thr_yield (0, 0, 0, 0, 0, 0) + 8c
----------------- lwp# 6 / thread# 5 --------------------
ff11efbc ___lwp_cond_wait (d5720, d5708, 0, fed10a40, 0, 0) + 8
fed110d4 ???????? (d56c8, 0, 5000, 5210, d4d38, 4d24)
fed10824 ???????? (fdf8172c, 0, 0, d4d38, d4d38, 30dec8)
fed103b0 ???????? (d4dcc, fdf81824, 0, 0, 0, 0)
fa40cc94 ???????? (f2000380, b6, fdf818a4, ffffffff, 0, fdf817c0)
fa405da0 ???????? (f2000380, b6, fdf818a8, fa415444, 0, fdf81840)
fa405da0 ???????? (fdf81938, 0, 0, fa4157a4, 2f4210, fdf818d8)
fa400438 ???????? (fdf819c0, fdf81c08, a, f6050b68, fa40bc8c, fdf81b50)
fecfe2f8 ???????? (fdf81c00, fdf81a88, fdf81b48, d4d38, d4d38, fdf81a9c)
fed0ff90 ???????? (fefe4000, d5298, fdf81b3c, fdf81b38, fdf81b48, d4d38)
fed0fdf0 ???????? (fdf81c00, fdf81bfc, fdf81bf0, fdf81be8, fdf81be0, d4d38)
fed0fd78 ???????? (d4d38, d4d38, ac9a0, d5298, 2d4488, fed0fa60)
fed0fa88 ???????? (d4d38, 0, 0, 0, 0, 0)
fecfcbd0 ???????? (d4d38, ff1df688, 1, 1, ff1de000, 0)
ff1cb728 threadstart (d4d38, 0, 0, 0, 0, 0) + 40
----------------- lwp# 7 / thread# 6 --------------------
ff11efbc ___lwp_cond_wait (d7040, d7028, 0, 1, 0, 0) + 8
fed110d4 ???????? (d6fe8, 0, 5000, 5210, d6658, 4d24)
fed10824 ???????? (fa38169c, 0, 0, d6658, d6658, 30dec8)
fed103b0 ???????? (d66ec, fa38179c, 0, 0, 0, 0)
fa40cc94 ???????? (f2000490, b6, fa3817a0, fa414050, 0, fa381730)
fa405da0 ???????? (f2000478, b6, fa3818b4, fa415444, 0, fa3817d8)
fa405c4c ???????? (f2000478, b6, fa381934, fa415444, d6658, fa381858)
fa405c4c ???????? (fa381938, 0, 0, fa38197c, 2f4210, fa3818d8)
fa400438 ???????? (fa3819c0, fa381c08, a, f60520b8, fa40bc8c, fa381b50)
fecfe2f8 ???????? (fa381c00, fa381a88, fa381b48, d6658, d6658, fa381a9c)
fed0ff90 ???????? (fefe4000, d6bb8, fa381b3c, fa381b38, fa381b48, d6658)
fed0fdf0 ???????? (fa381c00, fa381bfc, fa381bf0, fa381be8, fa381be0, d6658)
fed0fd78 ???????? (d6658, d6658, ac9e0, d6bb8, 2d4488, fed0fa60)
fed0fa88 ???????? (d6658, 0, 0, 0, 0, 0)
fecfcbd0 ???????? (d6658, ff1df688, 1, 1, ff1de000, 0)
ff1cb728 threadstart (d6658, 0, 0, 0, 0, 0) + 40
----------------- lwp# 8 / thread# 7 --------------------
ff11d194 _poll    (0, 0, 0, fa281a28, ff13f1b4, fa281a28) + 8
ff1cb134 select (0, a, 0, ff1de000, fa281e14, 0) + 34
fed32afc ???????? (d8040, 0, a, 0, 0, 0)
fed328b4 ???????? (d8040, 0, 0, 0, 0, 0)
fecfcbd0 ???????? (d8040, ff1df688, 1, 1, ff1de000, 0)
ff1cb728 threadstart (d8040, 0, 0, 0, 0, 0) + 40
----------------- lwp# 9 / thread# 8 --------------------
ff11efbc ___lwp_cond_wait (5f998, 5f980, 2e7aa0, ff1de000, fa181e14, 0) + 8
fecfc634 ???????? (5f950, 0, 0, 0, feffa26c, 0)
fed3371c ???????? (3c00, 3f44, 0, 0, 0, 0)
fecfcbd0 ???????? (d81a8, ff1df688, 1, 1, ff1de000, 0)
ff1cb728 threadstart (d81a8, 0, 0, 0, 0, 0) + 40
----------------- lwp# 10 / thread# 9 --------------------
ff11f008 lwpsema_wait (f1f81e30, ff1de000, 0, f1f81d70, ff3e2628, 0) + c
ff1b94c0 _swtch   (f1f81d70, ffffffff, ff1de000, 5, 1000, 0) + 158
ff1bcc64 sema_wait (ff020fe0, ff1e98e4, 5000, 10000, 534d, 1) + bc
fed345c8 ???????? (0, 6, b, a, 1, 0)
fed34254 ???????? (ff002ae4, ff00a5a0, ff00a5d4, dab90, 2d4488, fed0fa60)
fed0fa88 ???????? (da630, 0, 0, 0, 0, 0)
fecfcbd0 ???????? (da630, ff1df688, 1, 1, ff1de000, 0)
ff1cb728 threadstart (da630, 0, 0, 0, 0, 0) + 40
----------------- lwp# 11 / thread# 10 --------------------
ff11efbc ___lwp_cond_wait (604e8, 604d0, 2e7aa0, feffa26c, 106c40, 0) + 8
fecfc88c ???????? (604a0, 0, 0, dbbd0, feffa26c, 0)
fed349ac ???????? (db670, db670, dbfd0, dbbd0, 2d4488, fed0fa60)
fed0fa88 ???????? (db670, 0, 0, 0, 0, 0)
fecfcbd0 ???????? (db670, ff1df688, 1, 1, ff1de000, 0)
ff1cb728 threadstart (db670, 0, 0, 0, 0, 0) + 40
-------------------------- thread# 3 --------------------
ff1bddbc reapwait (ff1e29e0, 20520, 0, ff1de000, 0, 0) + 38
ff1bdb14 _reaper (ff1dee30, ff1e4740, ff1e29e0, ff1dee08, 1, fe400000) + 38
ff1cb728 threadstart (0, 0, 0, 0, 0, 0) + 40

This is an update to the original message -
I have tried both HotSpot & Server JVMs but still see the
same behavior. I'm using 1.4 .
I'd like to provide more information to those who can help
me. I have a feeling there might be something wrong in my
CC options. Thus you will find below what my CC statement
looks like for one of the files in my project & for the
linking of the final shared library. I also have
provided the output of ldd on my shared library libaicd.so
& for comparison the output of ldd on libjvm.so as that
might provide some usefull information just incase
something looks suspecious & might ring a bell.
/opt/SUNWspro.cc6/bin/CC -c -KPIC -g -DDEBUG=DEBUG -
D_DEBUG -mt -DSOLARIS -DSTD_STREAM -
I/vob1/qwsrc/fw/include -I.-I/vob4/source/idl -
I/vob4/source/mttoolkit -I/vob4/source/mttoolkit/tools -
I/vob4/source/integrations/siebel/aicd -
I/vob4/source/include -I/vob1/qwsrc/fw/include -
I/vob4/source/source -I/vob4/source/mttoolkit -
I/vob1/external/platform_neutral/siebel/scapi/include -
I/external/sparc/Sun/jdk/1.3.1/include -
I/external/sparc/Sun/jdk/1.3.1/include/solaris -
I/vob4/source/idl -I/vob4/source/mttoolkit -
I/vob4/source/mttoolkit/tools -
I/vob4/source/mttoolkit/vnet -
I/vob4/source/mttoolkit/bool -DUNIX -
D_USE_MTTServerToolkit -D_JAVA_ WIAcceptTimeOut.cpp -
o /space/users/janak/buildoutput/sparc/debug/obj/integratio s/siebel/aicd/WIAcceptTimeOut.o
/opt/SUNWspro.cc6/bin/CC -G -
o /space/users/janak/buildoutput/sparc/debug/lib/fw/libaicd.so
/space/us
ers/janak/buildoutput/sparc/debug/obj/integrations/siebel/ai
cd/AgentService.o /space/users/janak/buildoutput/sparc/debug
/obj/integrations/siebel/aicd/AgentServiceCmds.o /space/user
s/janak/buildoutput/sparc/debug/obj/integrations/siebel/aicd
/AgentServiceEvents.o /space/users/janak/buildoutput/sparc/d
ebug/obj/integrations/siebel/aicd/AgentServiceICAReq.o /spac
e/users/janak/buildoutput/sparc/debug/obj/integrations/siebe
l/aicd/AgentServiceICEvents.o /space/users/janak/buildoutput
/sparc/debug/obj/integrations/siebel/aicd/AgentServiceUtilit
ies.o /space/users/janak/buildoutput/sparc/debug/obj/integra
tions/siebel/aicd/AvMc.o /space/users/janak/buildoutput/spar
c/debug/obj/integrations/siebel/aicd/InternationalStrings.o
/space/users/janak/buildoutput/sparc/debug/obj/integrations/
siebel/aicd/JEvent.o /space/users/janak/buildoutput/sparc/de
bug/obj/integrations/siebel/aicd/JMultipleEvents.o /space/us
ers/janak/buildoutput/sparc/debug/obj/integrations/siebel/ai
cd/JNIObject.o /space/users/janak/buildoutput/sparc/debug/ob
j/integrations/siebel/aicd/JObject.o /space/users/janak/buil
doutput/sparc/debug/obj/integrations/siebel/aicd/JSemaphore.
o /space/users/janak/buildoutput/sparc/debug/obj/integration
s/siebel/aicd/JWorkerThread.o /space/users/janak/buildoutput
/sparc/debug/obj/integrations/siebel/aicd/MultipleEvents.o /
space/users/janak/buildoutput/sparc/debug/obj/integrations/s
iebel/aicd/Param.o /space/users/janak/buildoutput/sparc/debu
g/obj/integrations/siebel/aicd/ParamQueue.o /space/users/jan
ak/buildoutput/sparc/debug/obj/integrations/siebel/aicd/RefC
ount.o /space/users/janak/buildoutput/sparc/debug/obj/integr
ations/siebel/aicd/SiebelDriver.o /space/users/janak/buildou
tput/sparc/debug/obj/integrations/siebel/aicd/SiebelEvent.o
/space/users/janak/buildoutput/sparc/debug/obj/integrations/
siebel/aicd/SiebelWorkItem.o /space/users/janak/buildoutput/
sparc/debug/obj/integrations/siebel/aicd/SingleEvent.o /spac
e/users/janak/buildoutput/sparc/debug/obj/integrations/siebe
l/aicd/SmartPtr.o /space/users/janak/buildoutput/sparc/debug
/obj/integrations/siebel/aicd/StdAfx.o /space/users/janak/bu
ildoutput/sparc/debug/obj/integrations/siebel/aicd/ThreadPoo
l.o /space/users/janak/buildoutput/sparc/debug/obj/integrati
ons/siebel/aicd/Utilities.o /space/users/janak/buildoutput/s
parc/debug/obj/integrations/siebel/aicd/WIAcceptTimeOut.o -
lnsl -lc -lCstd -
L/space/users/janak/buildoutput/sparc/debug/lib/cti -
lmttoolkit -
L/space/users/janak/buildoutput/sparc/debug/lib/fw -
lmttlogger -
L/space/users/janak/buildoutput/sparc/debug/lib/fw -
lqwlicmtt -
L/external/sparc/Sun/jdk/1.3.1/jre/lib/sparc/server -
Bdynamic -ljvm -mt -lpthread -lposix4
$ ldd /usr/j2se/jre/lib/sparc/libjvm.so
libCrun.so.1 => /usr/lib/libCrun.so.1
libdl.so.1 => /usr/lib/libdl.so.1
libthread.so.1 => /usr/lib/libthread.so.1
libsocket.so.1 => /usr/lib/libsocket.so.1
libnsl.so.1 => /usr/lib/libnsl.so.1
libm.so.1 => /usr/lib/libm.so.1
libw.so.1 => /usr/lib/libw.so.1
libc.so.1 => /usr/lib/libc.so.1
libmp.so.2 => /usr/lib/libmp.so.2
/usr/platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1
$ ldd libaicd.so
libnsl.so.1 => /usr/lib/libnsl.so.1
libc.so.1 => /usr/lib/libc.so.1
libmttoolkit.so => ./libmttoolkit.so
libmttlogger.so => ./libmttlogger.so
libjvm.so => /usr/java/jre/lib/sparc/libjvm.so
libpthread.so.1 => /usr/lib/libpthread.so.1
librt.so.1 => /usr/lib/librt.so.1
libdl.so.1 => /usr/lib/libdl.so.1
libmp.so.2 => /usr/lib/libmp.so.2
libCrun.so.1 => /usr/lib/libCrun.so.1
libthread.so.1 => /usr/lib/libthread.so.1
libsocket.so.1 => /usr/lib/libsocket.so.1
libm.so.1 => /usr/lib/libm.so.1
libaio.so.1 => /usr/lib/libaio.so.1
libw.so.1 => /usr/lib/libw.so.1
/usr/platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1

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The warning seem to be related to the fact that I use virtual members in classes that are derived and the member overriden. (I'm saying that because I have a similar library with no virual members and I don't get the warnings even if I use the same options).
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SunOS cbsccuseqt1d 5.9 Generic_118558-17 sun4u sparc SUNW,Sun-Fire-880
CC -V:
CC: Sun WorkShop 6 update 2 C++ 5.3 Patch 111685-22 2005/04/29
Please advise

More info: hopefully I get an opinion:)
The header file:
#ifndef DISTRIBUTION_H
#define DISTRIBUTION_H
class Distribution
public:
virtual double marketVol( double _x) const;
#endif
The cpp file:
#include "distribution.h"
double Distribution::marketVol( double _x) const
return 1.0;
Makefile:
LIB = libeqpr.so
CC=CC
CFLAGS = -I. -c -DUNIX -KPIC
LDFLAGS = -z verbose -G
LINK_LIBPATH =
LINK_LIBS=
OBJS = distribution.o
all: ${LIB}
libeqpr.so: ${OBJS}
ld ${LDFLAGS} -o ${LIB} ${OBJS}
distribution.o: distribution.cpp
$(CC) $(CFLAGS) distribution.cpp
clean:
-rm libeqpr.so *.o
Message was edited by:
oulisee

Problem importing videos into file-shared library

There appears to be a bug in iPhoto for importing videos in the case where a library is opened via file sharing.
I've posted a bug report with Apple but it might help others to know about this. If I'm mistaken feel free to explain, that would be helpful too.
I have an iPhoto library on a Mac Mini server at home. I often open the iPhoto library on the mini via file sharing from my laptop to edit it.
I can drag and drop photos from my Sony DSC-H55 memory card plugged into my laptop onto iPhoto and they import fine into the file-shared library.
If I do the same with videos I get an error message that they are an unsupported file type.
If I copy the videos to the mini, and open iPhoto locally on the mini, they import fine.
In every other way, working with this iPhoto library via file sharing has been flawless, so this looks like a bug.

Interesting, thanks for the warning, Terence. I guess I assumed error correction would deal with that scenario, but I suppose there are insidious errors that could slip through and result in a mangled library. I do regular backups but still, I might lose that one special priceless photo!
It's easy enough to use screen sharing to operate iPhoto on the mini over wireless. I can transfer files first and then import that way. That would avoid this bug too.
Would you say this applies to other aspects of file sharing too? In other words, should we simply never edit a crucial file on a remote machine connected by wireless?
Where I work we often use SVN over wireless. I wonder if we could damage something while updating the repository.

Linking problems compiling Lua shared library (nixio)

I am trying to create a PKGBUILD for nixio (see http://dev.luci.freifunk-halle.net/nixio/doc/). I am using this PKGBUILD:
pkgname=nixio
pkgver=0.3
pkgrel=1
pkgdesc="System, networking and I/O library for Lua"
arch=('i686' 'x86_64')
url="http://luci.subsignal.org/"
license=('APACHE')
depends=('lua>=5.1' 'openssl')
makedepends=()
optdepends=()
provides=()
options=('docs')
source=(http://dev.luci.freifunk-halle.net/nixio/nixio-0.3.tar.bz2)
md5sums=('7fa6a989cd2644347d969cb6e3a5c186')
build() {
cd "$srcdir/$pkgname-$pkgver"
make LUA_MODULEDIR=/usr/share/lua/5.1 LUA_LIBRARYDIR=/usr/lib/lua/5.1
package() {
cd "$srcdir/$pkgname-$pkgver"
cp -R dist/* $pkgdir
(The package contents are rather irregular.) When building, it produces this output:
==> Starting build()...
mkdir -p dist/usr/share/lua/5.1
cp -pR lua/* dist/usr/share/lua/5.1 2>/dev/null || true
for i in $(find dist -name .svn); do rm -rf $i || true; done
gcc -O2 --std=gnu99 -Wall -Werror -pedantic -fPIC -c -o src/nixio.o src/nixio.c
gcc -O2 --std=gnu99 -Wall -Werror -pedantic -fPIC -c -o src/socket.o src/socket.c
gcc -O2 --std=gnu99 -Wall -Werror -pedantic -fPIC -c -o src/sockopt.o src/sockopt.c
# 15 more pretty much identical object code files...
gcc -Wl,--hash-style=gnu -Wl,--as-needed -shared -lcrypt -lssl -o src/nixio.so src/nixio.o src/socket.o src/sockopt.o src/bind.o src/address.o src/poll.o src/io.o src/file.o src/splice.o src/process.o src/syslog.o src/bit.o src/binary.o src/fs.o src/user.o src/tls-crypto.o src/tls-context.o src/tls-socket.o
mkdir -p dist/usr/lib/lua/5.1
cp src/nixio.so dist/usr/lib/lua/5.1/nixio.so
The package seems to build fine, although namcap produces these warnings:
nixio W: Dependency included and not needed ('lua')
nixio W: Dependency included and not needed ('openssl')
But when I install it and launch Lua:
Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio
> require 'nixio'
error loading module 'nixio' from file '/usr/lib/lua/5.1/nixio.so':
/usr/lib/lua/5.1/nixio.so: undefined symbol: MD5_Init
stack traceback:
[C]: ?
[C]: in function 'require'
stdin:1: in main chunk
[C]: ?
Doing some research, I found that MD5_Init is part of the OpenSSL library (which nixio uses for its cryptographic functions), and that "undefined symbol" errors are indicative of a program compiling and linking properly, but not being able to load a shared library at runtime. However, OpenSSL is installed properly and libssl.so is in my /usr/lib.
What should I do to fix this error? It builds properly when installed using LuaRocks. I tried adding various flags from the rockspec (run "luarocks download nixio" and "luarocks unpack nixio-0.3-1.src.rock" to look at it) but still can't get it to work.

You probably did not install the required C++ shared library patches on the system where you are running the compiler. On Solaris 9 for SPARC, Studio 11 requires patches 111711-12 and 111712-12. Studio 11 also requires other patches, which are in the installation image.
You can find out what shared library version you have by running these commands:
version /usr/lib/libCstd.so.1
version /usr/lib/sparcv9/libCstd.so.1
If the patch versions are not -12 or later, run the Studio 11 installer again, and this time have it install the Solaris patches (but nothing else).

How can I use a shared library made with the application builder?

Hi,
I am using LabVIEW 7.1 running on Slackware 10.1 (kernel 2.4.29) and I am trying to call a graph display from a C program that I use for debugging VME access from a VMIVME controler. So using the application builder I built the VI as a shared library (graph.vi -> graph.so) containing a function called "graph". In my main program the call to the dlopen fails with the error: "graph.so: undefined symbol: UninitLVClient". When I examin graph.so with nm I see that UninitLVClient and other LabVIEW functions are indeed undefined and using ldd shows that graph.so has dependencies only on libc.so.* and *linux*.so.* but not on LabVIEW related stuff. Those functions are defined in the liblv.so that's in the cintools directory but I have no idea if the user is supposed to use that.
So I think I am missing an important concept here. Can somebody help or direct me to some documentation (I found lots of information about how to link external code to LabVIEW but nothing about how to link LabVIEW code to an external program)?

Thanks Watermann,
your message has been very useful so now I am linking to the proper library but I still have problems when trying to load dynamically the shared library produced with LabVIEW. It is strange that I could successfully load the lvrt library at loading time but it does not work when I am loading the library at execution time.
I made a small LabVIEW program that prints a hello window and I am calling it from a C program. In the first program main.c I am linking to the lvrt library at loading time and it works but in the second one I am linking dynamically at execution time and it does not work. For my work I need to be able to load code done in LabVIEW at execution time. Any help is appreciated!
Program main.c:
// small program to call a LabVIEW shared library
#include
#include
#include "hello.h" // got this from the LabVIEW builder, i.e. when I made the hello.so
int main(void)
printf("Hello from C!\nLets call LabVIEW now\n");
hello();
printf("Bye ... \n");
return 0;
The command to compile main.c, i.e. linking shared library lvrt when loading main program:
gcc -Wall -I /usr/local/lv71/cintools/ -o main main.c hello.so -l lvrt
The LD_LIBRARY_PATH has been defined and exported:
$ LD_LIBRARY_PATH=$PWD
$ export LD_LIBRARY_PATH
IT WORKS!
Program main2.c:
// small program to call a LabVIEW shared library
#include
#include
#include
int main(void)
void * h_lvrt;
void * h_hello;
void (* hello)(void);
char * error;
printf("Hello from C!\nLets call LabVIEW now\n");
// open LabVIEW RunTime shared library
// in my computer located at /usr/local/lib/liblvrt.so
h_lvrt = dlopen("/usr/local/lib/liblvrt.so", RTLD_NOW);
// check for error
error = dlerror();
if (error) {
printf("error : could not open LabVIEW RunTime library\n");
printf("%s\n", error);
return 1;
// open hello shared library
// in my computer located at /home/darss/lv_call/hello.so
h_hello = dlopen("hello.so", RTLD_NOW);
// check for error
error = dlerror();
if (error) {
// close LabVIEW RunTime shared library
dlclose(h_lvrt);
printf("error : could not open hello library\n");
printf("%s\n", error);
return 1;
// get function hello from library hello.so
hello = dlsym(h_hello, "hello");
// check for error
error = dlerror();
if (error) {
// close hello shared library
dlclose(h_hello);
// close LabVIEW RunTime shared library
dlclose(h_lvrt);
printf("error : could not get the hello function\n");
printf("%s\n", error);
return 1;
// call hello function
hello();
// close hello shared library
dlclose(h_hello);
// close LabVIEW RunTime shared library
dlclose(h_lvrt);
printf("Bye ... \n");
return 0;
The command to compile main2.c, i.e. dynamically linking library lvrt at execution of main2 program:
gcc -Wall -o main2 main2.c -l dl
The LD_LIBRARY_PATH still defined and exported.
IT DOES NOT WORK!
Program output:
Hello from C!
Lets call LabVIEW now
error : could not open hello library
/home/darss/lv_call/hello.so: undefined symbol: WaitLVDLLReady

HT2688 Working on a single computer with multiple users, I have set things up to allow each user to view and listen to the others' music libraries under the "Shared Library" function. Can you then connect an iPod touch and copy music from a shared librar

Working on a single computer with multiple users, I have set things up to allow each user to view and listen to the others' music libraries under the "Shared Library" function. Can you then connect an iPod touch and copy music from a shared library?

Was your wife logged into the libray at the time you tried to log in? I have had a similar problem and it was because another user was logged into the library when I attempted to. I got the permission denied banner.

How to make the symbol to be resolved within the shared library ?

I have two definitions of a symbol, one is in the main code, the other in a shared library. I want the symbol to be resolved within the shared library if it needed in the shared library.
From the 'C++ User�s Guide', use the option '-Bsymbolic' to build the shared library is a choice. But it also said 'Never use -Bsymbolic with programs containing C++ code, use linker map files instead. So I have to try to use the map file, but I did not get more useful information from 'Linker and Libraries Guide'.
I want to know what should be included in the map file and how to generate the map file?
Additionally, from the 'Linker and Libraries Guide', the 'Direct Binding' also could resolve this problem. And I tried to build the shared library by the '-B direct' option, it works.
Could anybody tell me what's the difference between the '-Bsymbolic' and '-B direct'?
Any comments are appreciated.

You didn't provide fun.h, and you didn't show all the commands that you must have used -- there are no commands that compile the source code into .o files. So I can't tell why the -xldscope option didn't work for you.
Problems and errors that I see in your example:
Functions func and swap are referenced from C code, but swap and one of the func functions are compiled by the C++ compiler and will get mangled names. If you compile a function with the C++ compiler that is to be called from C code, you need to declare the function as extern "C". But the extern "C" in a shared header needs to be guarded by +#ifdef __cplusplus+, since a C compiler won't understand the declaration.
When you build a shared library, you must explicitly list the libraries it depends on, since no dependencies are created by default. For a C++ library, you need at least -lCrun -lc in that order. Otherwise, in a real-world program you can have program failures due to incorrect library initialization order. To be sure you have listed all needed libraries, use the -zdefs option, which causes the linker to complain about missing definitions.
To be sure the shared library is picked up at run time, provide a RUNPATH via the -R option when you build the executable.
The -xldscope option must appear on compile commands for the files where you want it to take effect. It has no effect on a link command, because the option affects how code is generated.
Here is my rewrite:
% cat fun.h
#ifdef __cplusplus
extern "C"
#endif
void func();
#ifdef __cplusplus
extern "C"
#endif
void swap();
% cat fun.c
#include <stdio.h>
#include "fun.h"
extern "C" void func()
    printf("func in the shared lib\n");
extern "C" void swap()
    func();
% cat fun_in.c
#include <stdio.h>
#include "fun.h"
void func()
    printf("func in the main code\n");
% cat main.c
#include <stdio.h>
#include "fun.h"
int main()
    func();
    printf("invoke the swap:\n");
    swap();
% CC -G -xldscope=symbolic fun.c -Kpic -o liboutside.so -lCrun -lc -zdefs
% cc -o run main.c fun_in.c -L. -loutside -R .
% ./run
func in the main code
invoke the swap:
func in the shared libAs you can see, it works as advertised.
Please note that the -xldscope option affects all functions in the module. If you need more fine-grained control, you must add declarations to the source code, or use a mapfile instead of -xldscope .

How to create a c++ shared library (.so) for linux real time (for myRio) with Eclipse to use in LabView?

I tried already these Tutorials and Advices but I didn't find a solution:
- http://www.ni.com/tutorial/14625/en/
- http://www.ni.com/tutorial/14690/en/
- http://forums.ni.com/t5/LabVIEW/Shared-Library-on-myrio-Linux-Real-time-system/m-p/2842540/
- http://forums.ni.com/t5/LabVIEW/How-to-create-shared-library-for-linux-real-time-target-in/m-p/28218...
- and some more
I want use c++ codes on linux real time. For testing reasons I want to have a function that adds 2 values and gives the result.
I've done these steps:
1. writing a c++ file in Eclipse (see screensot 2)
2. building a shared library (.so) from my c++ project in Eclipse (with Cross GCC)
3. putting this file on myRio (path: /usr/local/lib/)
4. creating a VI that calls this library from Labview with a "Call Library Function Node" (see screenshot3)
5. Setting the properties for the "Call Library Function Node" (see screenshots 4-7)
After I run this VI i get this error message: LabVIEW: (Hex 0x627) The function name for the ... node cannot be found in the library. To correct this error, right-click the Call Library Function Node and select Configure from the shortcut menu. Then choose the correct function name. (see screenshot1)
I've tried a lot things to solve this problem but I couldn't find a solution. Would be very happy if anyone can help me. I guess that I have to edit my c++ code to export my function (symbol). But I have no idea how to make it. I also tried it with a dll file in the same folder but it didn't help.
Perhaps someone can send an example which works on myRIO.
Thanks!
screenshot1
screenshot2
screenshot3
screenshot4
screenshot5
screenshot6
screenshot7

can see it in the screenshot8 there is a function called "_Z8AddierenddPd" instead of "Addieren". I copied this name to Labview (see screenshot9) and it worked.
I'm sure that there is a way to compile the shared folder with gcc without decorations (mangling). But I don't know how. If someone has a recommendation I would be very glad!
Prepend each function declaration that you want to be available without name decoration with
extern "C" <your function declaration>
Or if you have multiple functions you want to export you can in the header file where you declare your functions simply use:
#ifdef __cplusplus
extern "C" {
#endif
<all your function declarations>
#ifdef __cplusplus
#endif
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Using the Remote App and playing iTunes from a shared Library

I have a playlist set up in my main iTunes library on my iMac. This is a shared library on my local network at home. I can access and play the library remotely from my MacBook. I want to move my MacBook outside with external speakers for a party. I want to be able to access the shared library from the iMac inside the house from my MacBook and be able to control it with the Remote App.
My problem is that when I use Remote and the MacBook outside (I've set up the iTunes passcode with that computer and my iPod) it will only recognize the library on that computer, even if I am logged in to the shared library and it is visible in the MacBook. So basically, remote is doing what it is suppose to do in a normal situation, but I need it to recognize and play from the shared library.
When I turn on home sharing on the iPod I can access all the libraries on the various macs in our house, but the music will only play out of that particular machines speakers.
I don't have wireless speakers, so I can't think of another way to do this. Is there?
Thanks, Sandy

Well, I've got it to work although not ideal.
1. On my main computer (iMac) I created the playlist that I want available to control at a party.
2. I went to iTunes settings/Sharing and selected "Share selected playlists" and checked the playlist I made for a party.
3. I Linked my iPod to MacBook (which is outside with external speakers) using the 4 digit code
4. iPod, Home Sharing Off
5. Select the Library on iPod
6. Select "More" (bottom right of iPod)
7. Select "Shared" from the list that appears
8. Select the computer that has the shared library
9. Select the playlist (or lists if you created others)
This setting is allowing me to use my iPod "Remote App" to play an iTunes playlist (or the entire catalogue) from a shared library on my MacBook WITH the sound coming from my MacBook and NOT from my iMac where the original iTunes catalogue is located.
Not sure if this is the easiest way, but it's working.

Shared library problem

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