unresolved ref. found in libdb_cxx when linking

Alberto · *nix forums beginner Joined: 10 Mar 2005 Posts: 45

Yes, that solved it. Thanks a lot Volodymyr,

Regards/Alberto

Volodymyr Tarasenko · *nix forums beginner Joined: 24 Mar 2005 Posts: 5

Alberto wrote:

Alberto · *nix forums beginner Joined: 10 Mar 2005 Posts: 45

Hi,

I'm trying to get the example that comes with the db part of the dbxml
distribution, and I found the following error when linking:

GNU assembler version 2.15.90.0.1.1 (i586-suse-linux) using BFD version
2.15.90.0.1.1 20040303 (SuSE Linux)
/usr/lib/gcc-lib/i586-suse-linux/3.3.3/collect2 --eh-frame-hdr -m
elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o cargadb
/usr/lib/gcc-lib/i586-suse-linux/3.3.3/../../../crt1.o
/usr/lib/gcc-lib/i586-suse-linux/3.3.3/../../../crti.o
/usr/lib/gcc-lib/i586-suse-linux/3.3.3/crtbegin.o
-L/usr/local/berkeleydb.4.3/lib/
-L/usr/lib/gcc-lib/i586-suse-linux/3.3.3
-L/usr/lib/gcc-lib/i586-suse-linux/3.3.3/../../../../i586-suse-linux/lib
-L/usr/lib/gcc-lib/i586-suse-linux/3.3.3/../../.. -ldb_cxx-4.3
/tmp/ccvnfKhr.o /tmp/ccmlCwbA.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s
-lgcc /usr/lib/gcc-lib/i586-suse-linux/3.3.3/crtend.o
/usr/lib/gcc-lib/i586-suse-linux/3.3.3/../../../crtn.o
/usr/local/berkeleydb.4.3/lib//libdb_cxx-4.3.so: undefined reference to
`pthread_condattr_setpshared'
/usr/local/berkeleydb.4.3/lib//libdb_cxx-4.3.so: undefined reference to
`pthread_mutexattr_destroy'
/usr/local/berkeleydb.4.3/lib//libdb_cxx-4.3.so: undefined reference to
`pthread_mutexattr_setpshared'
/usr/local/berkeleydb.4.3/lib//libdb_cxx-4.3.so: undefined reference to
`pthread_mutexattr_init'
/usr/local/berkeleydb.4.3/lib//libdb_cxx-4.3.so: undefined reference to
`pthread_mutex_trylock'
collect2: ld returned 1 exit status

My cmd line was:

g++ -v -ldb_cxx-4.3 -L/usr/local/berkeleydb.4.3/lib/ MyDb.cpp
excxx_example_database_load.cpp -o cargadb

I had a look at the /dist/build_unix directory and there I can find
some object files related to mutex (mut_pthread.o), so I'm confused
about the reason of the error.
Could anybody help me with this? Thanks,

/Alberto

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