I've been searching in all directories. It isn't prominent to find
which library files I have to pass to the Linker.
g++ -o db db_try.cpp -l?????

Please fill in the question marks.
Thanks
Jack

Now, I finally got thru the compiler. Now facing the linker again
Seems like even the Db:b(...) isn't correctly linked.
g++ -o try db_try.cpp -ldb

I've got errors such as Db::set_error_stream undefined reference etc
Why? it should be linked correctly...
Thanks
Jack

Db:b() Typo sorry about that!

There are some examples inside the dir of examples_cxx
Why it's not compiled while on a clean installation?
I saw some files like tag and a folder called getting_started
No exe is found, no makefile
even couldn't compiled using
g++ -o db MyDb.cpp excxx_example_database_read.cpp
excxx_example_database_load.cpp -ldb
Could anyone point me right?
Thanks
Jack

#include <iostream.h>
#include <string>
#include <db_cxx.h>


Db db(NULL, 0);

u_int32_t oFlags = DB_CREATE;

class MyDb
{
public:
MyDb (std::string& path, std::string& dbName, bool isSecondary);
~MyDb() { close(); }

inline Db &getDb() { return db_; }

private:
Db db_;
std::string dbFileName_;
u_int32_t cFlags_;

MyDb() : db_(NULL, 0) { }

void close();
};

MyDb::MyDb (std::string &path, std::string &dbName,
bool isSecondary)
: db_(NULL, 0),
dbFileName_ (path + dbName),
cFlags_ (DB_CREATE)
{
try
{
db_.set_error_stream (&std::cerr);

if (isSecondary)
db_.set_flags (DB_DUPSORT);

db_.open(NULL, dbFileName_.c_str(), NULL, DB_BTREE, cFlags_, 0);
}
catch (DbException &e)
{
std::cerr << "Error opening database: " << dbFileName_ << "\n";
std::cerr << e.what() << std::endl;
}
catch (std::exception &e)
{
std::cerr << "Error opening database: " << dbFileName_ << "\n";
std::cerr << e.what() << std::endl;
}
}





class Plumedata
{
private:
float m_CO;
float m_NOX;
float m_HC;
float m_CO2;
size_t bufLen_;
char databuf_[500];
public:
inline void setCO(float co) { m_CO = co; }
inline void setNOX(float nox) { m_NOX = nox; }
inline void setHC (float hc) { m_HC = hc; }
inline void setCO2 (float co2) { m_CO2 = co2; }

inline float& getCO() { return m_CO; }
inline float& getNOX() { return m_NOX; }
inline float& getHC() { return m_HC; }
inline float& getCO2() { return m_CO2; }
Plumedata() { clear(); }
Plumedata(void *buffer);


void clear();
char *getBuffer();
void show();
};

//void loadPlumeDB( MyDb &, std::string&);

using namespace std;


void Plumedata::clear()
{
m_CO = 0.0;
m_NOX = 0.0;
m_HC = 0.0;
m_CO2 = 0.0;
}

Plumedata::Plumedata(void *buffer)
{
char *buf = (char *)buffer;


m_CO = *((float *)buf);
bufLen_ = sizeof(float);

m_NOX = *((float *)buf);
bufLen_ += sizeof(float);

m_HC = *((float *)buf);
bufLen_ += sizeof(float);

m_CO2 = *((float *)buf);
bufLen_ += sizeof(float);
}

char *Plumedata::getBuffer(void)
{
memset( databuf_ ,0, 500 );
bufLen_ = 0;
int dataLen = 0;

dataLen = sizeof(float);
memcpy (databuf_, &m_CO, dataLen);
bufLen_ += dataLen;

memcpy (databuf_ + bufLen_, &m_NOX, dataLen);
bufLen_ += dataLen;

memcpy (databuf_ + bufLen_, &m_HC, dataLen);
bufLen_ += dataLen;

memcpy (databuf_ + bufLen_, &m_CO2, dataLen);

return (databuf_);

}

void Plumedata::show()
{
std::cout << "\nCO: " << m_CO << std::endl;
std::cout << "NOX: " << m_NOX << std::endl;
std::cout << "HC: " << m_HC << std::endl;
std::cout << "CO2: " << m_CO2 << std::endl;
}

int main (int argc, char *argv[])
{
std::string basename("./");
std::string databasehome("./");

std::string pDbName("Plumedb.db");






}

When you compiled this code, you get link time error!
Thanks
Jack