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undefined reference to Db::Db() - berkeley-db

This is a discussion on undefined reference to Db::Db() - berkeley-db ; I am a newbie to the Berkeley DB . I am getting this error when I try to produce my outfile for a very simple C++ example file. Here are my steps: I am working on the latest version of ...


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  #1  
Old 01-09-2006, 05:57 PM
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Default undefined reference to Db::Db()

I am a newbie to the Berkeley DB. I am getting this error when I try to
produce my outfile for a very simple C++ example file.

Here are my steps:
I am working on the latest version of RedHat;
I did the following to build the DB on my laptop:
From build_unix dir I did
[root@localhost build_unix]# make realclean
[root@localhost build_unix]# ../dist/configure --enable-cxx
[root@localhost build_unix]# make
[root@localhost build_unix]# make install

Here is my Berkeley Dir file listings:
/usr/local/BerkeleyDB.4.4/bin
db_archive db_deadlock db_hotbackup db_printlog db_stat
db_verify
db_checkpoint db_dump db_load db_recover db_upgrade

/usr/local/BerkeleyDB.4.4/include
db_cxx.h db.h

/usr/local/BerkeleyDB.4.4/lib
libdb-4.4.a libdb-4.4.so libdb.a
libdb-4.4.la libdb-4.so libdb.so
libdb_cxx-4.so libdb_cxx.so libdb_cxx-4.4.la
libdb_cxx-4.4.a libdb_cxx-4.4.so
libdb_cxx.a


Here is my program:
#include

using namespace std;

int main(){
Db(NULL,0);
return (0);
}


Here are the commands I ran:

[root@localhost mydb]# g++ -c -I/usr/local/BerkeleyDB.4.4/include/
SearchThread.cpp
[no problem]

[root@localhost mydb]# g++ -o ciboreqt SearchThread.o
-L/usr/local/BerkeleyDB.4.4/lib/

HERE IS THE OUTPUT W/ ERRORS:

SearchThread.o(.text+0x28): In function `main':
SearchThread.cpp: undefined reference to `Db:b(DbEnv*, unsigned int)'
SearchThread.o(.text+0x37):SearchThread.cpp: undefined reference to
`Db::~Db()'
collect2: ld returned 1 exit status
[root@localhost mydb]#


The program is so simple and the concept is the same as any other
program, that I don't understand what the problem is with the linker.

PLEASE HELP

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  #2  
Old 01-09-2006, 07:03 PM
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Default Re: undefined reference to Db::Db()

Try something like:
-L/usr/local/BerkeleyDB.4.4/lib/ -ldb_cxx-4.4

Ron

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  #3  
Old 01-11-2006, 03:33 PM
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Default Re: undefined reference to Db::Db()

That worked, however, when I execute my outfile it gives me the error

../cibyre : error while loading shared libraries: libdb_cxx-4.4.so:
cannot open shared object file: No such file or directory

Any ideas on this one?

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  #4  
Old 03-16-2009, 08:12 PM
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Default Re: undefined reference to Db::Db()

You can add the lib directory to the LD_LIBRARY_PATH environment variable, let the system know where to find dynamic library files.

However, is there a way to statically link with C++ support?
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