Linking?

Linking?

[Hermione Granger]

This is the command I run:
g++ main.o db.o prime.o /usr/lib/libbig_num.so -o prime -ldb_cxx
This is the error message I get:
db.o: In function `Prime_func::store(unsigned long)':
db.o(.text+0x39): undefined reference to `Dbt::Dbt[in-charge](void*, 
unsigned)'
db.o(.text+0x60): undefined reference to `Dbt::Dbt[in-charge](void*, 
unsigned)'
db.o(.text+0x8e): undefined reference to `Db::put(DbTxn*, Dbt*, Dbt*, 
unsigned)'
db.o(.text+0xa2): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0xad): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0xc0): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0xd6): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o: In function `Prime_func::store_pos()':
db.o(.text+0x11b): undefined reference to `Dbt::Dbt[in-charge](void*, 
unsigned)'
db.o(.text+0x135): undefined reference to `Dbt::Dbt[in-charge](void*, 
unsigned)'
db.o(.text+0x163): undefined reference to `Db::put(DbTxn*, Dbt*, Dbt*, 
unsigned)'
db.o(.text+0x16e): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x179): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x18c): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x1a2): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o: In function `Prime_func::access(unsigned long)':
db.o(.text+0x1f1): undefined reference to `Dbt::Dbt[in-charge](void*, 
unsigned)'
db.o(.text+0x1ff): undefined reference to `Dbt::Dbt[in-charge]()'
db.o(.text+0x233): undefined reference to `Db::get(DbTxn*, Dbt*, Dbt*, 
unsigned)'
db.o(.text+0x32d): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x33b): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x388): undefined reference to `Dbt::get_data() const'
db.o(.text+0x48a): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x498): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x4b4): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x4d6): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o: In function `Prime_func::access_pos()':
db.o(.text+0x523): undefined reference to `Dbt::Dbt[in-charge](void*, 
unsigned)'
db.o(.text+0x52e): undefined reference to `Dbt::Dbt[in-charge]()'
db.o(.text+0x55c): undefined reference to `Db::get(DbTxn*, Dbt*, Dbt*, 
unsigned)'
db.o(.text+0x582): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x58d): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x5a1): undefined reference to `Dbt::get_data() const'
db.o(.text+0x5cb): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x5d6): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x5f0): undefined reference to `Dbt::~Dbt [in-charge]()'
db.o(.text+0x606): undefined reference to `Dbt::~Dbt [in-charge]()'
prime.o: In function `Prime_func::Prime_func[not-in-charge](char const*)':
prime.o(.text+0x8b): undefined reference to `Db::Db[in-charge](DbEnv*, 
unsigned)'
prime.o(.text+0xc2): undefined reference to `Db::open(char const*, char 
const*, DBTYPE, unsigned, int)'
prime.o(.text+0x1fc): undefined reference to `Db::~Db [in-charge]()'
prime.o: In function `Prime_func::Prime_func[in-charge](char const*)':
prime.o(.text+0x26d): undefined reference to `Db::Db[in-charge](DbEnv*, 
unsigned)'
prime.o(.text+0x2a4): undefined reference to `Db::open(char const*, char 
const*, DBTYPE, unsigned, int)'
prime.o(.text+0x3de): undefined reference to `Db::~Db [in-charge]()'
prime.o: In function `Prime_func::~Prime_func [not-in-charge]()':
prime.o(.text+0x423): undefined reference to `Db::close(unsigned)'
prime.o(.text+0x433): undefined reference to `Db::~Db [in-charge]()'
prime.o: In function `Prime_func::~Prime_func [in-charge]()':
prime.o(.text+0x45f): undefined reference to `Db::close(unsigned)'
prime.o(.text+0x46f): undefined reference to `Db::~Db [in-charge]()'
/usr/lib/libdb_cxx.so: undefined reference to `cerr'
/usr/lib/libdb_cxx.so: undefined reference to `ios::fail(void) const'
/usr/lib/libdb_cxx.so: undefined reference to `ostream::operator<<(char 
const *)'
collect2: ld returned 1 exit status
make: *** [prime] Error 1

What is going on I linked to the db_cxx library but it acts like I didn't.

Thx.




_________________________________________________________________
Send and receive Hotmail on your mobile device: http://mobile.msn.com

Re: Linking?

[Zack Weinberg]

On Mon, Oct 07, 2002 at 05:38:15AM +0100, Hermione Granger wrote:
> This is the command I run:
> g++ main.o db.o prime.o /usr/lib/libbig_num.so -o prime -ldb_cxx
> This is the error message I get:
> db.o: In function `Prime_func::store(unsigned long)':
> db.o(.text+0x39): undefined reference to `Dbt::Dbt[in-charge](void*, 
> unsigned)'

Odds are that libdb_cxx was compiled with a different version of g++
than db.o.  We have not yet achieved binary compatibility between g++
releases - the hope is that 3.2 will be compatible with releases after
that (in at least one mode) but as there haven't been any releases
after 3.2 yet, well...

You will need to rebuild your program with the same compiler version
used to build libdb_cxx, or vice versa.

zw