Я написал код ниже, используя C ++ Object Interface, предоставленный IBM. Я пытаюсь скомпилировать это на RHEL (Linux):
#include <it.h>
#include <iostream.h>
int main() {
ITDBInfo db("dbname","user","pwd","system");
ITConnection conn(db);
conn.Open();
if ( conn.Error() ) {
cout << "Couldn't open connection" << endl;
return -1;
}
ITQuery query( conn );
ITRow *row;
if( !(row = query.ExecOneRow( "select lname from customer;" )) ) {
cout << "Couldn't select from table customer" << endl;
return -1;
}
while ((row = query.NextRow()) != NULL) {
cout << row->Printable() << endl;
}
row->Release();
conn.Close();
}
При компиляции в Linux:
g++ -Wno-deprecated -I/opt/Informix/11.5FC8/incl/c++ \
-I/opt/Informix/11.5FC8/incl/public \
-L/opt/Informix/11.5FC8/lib/c++ -g -o test1 test1.cpp
Я получаю ошибки, показанные ниже:
/tmp/cchJkPb1.o: In function `main':
test1.cpp:(.text+0x82): undefined reference to `ITString::ITString(char const*)'
test1.cpp:(.text+0x90): undefined reference to `ITString::ITString(char const*)'
test1.cpp:(.text+0x9e): undefined reference to `ITString::ITString(char const*)'
test1.cpp:(.text+0xac): undefined reference to `ITString::ITString(char const*)'
test1.cpp:(.text+0xc8): undefined reference to `ITDBInfo::ITDBInfo(ITString const&, ITString const&, ITString const&, ITString const&)'
test1.cpp:(.text+0xd1): undefined reference to `ITString::~ITString()'
test1.cpp:(.text+0xea): undefined reference to `ITString::~ITString()'
test1.cpp:(.text+0xfc): undefined reference to `ITString::~ITString()'
test1.cpp:(.text+0x115): undefined reference to `ITString::~ITString()'
test1.cpp:(.text+0x127): undefined reference to `ITString::~ITString()'
/tmp/cchJkPb1.o:test1.cpp:(.text+0x140): more undefined references to `ITString::~ITString()' follow
/tmp/cchJkPb1.o: In function `main':
test1.cpp:(.text+0x15f): undefined reference to `ITConnection::ITConnection(ITDBInfo const&)'
test1.cpp:(.text+0x178): undefined reference to `ITString::~ITString()'
test1.cpp:(.text+0x194): undefined reference to `ITConnection::Open()'
test1.cpp:(.text+0x19d): undefined reference to `ITErrorManager::Error() const'
test1.cpp:(.text+0x1e6): undefined reference to `ITQuery::ITQuery(ITConnection const&)'
test1.cpp:(.text+0x1f4): undefined reference to `ITString::ITString(char const*)'
test1.cpp:(.text+0x209): undefined reference to `ITQuery::ExecOneRow(ITString const&, ITEssential**)'
test1.cpp:(.text+0x222): undefined reference to `ITString::~ITString()'
test1.cpp:(.text+0x23b): undefined reference to `ITString::~ITString()'
test1.cpp:(.text+0x2a6): undefined reference to `operator<<(std::basic_ostream<char, std::char_traits<char> >&, ITString const&)'
test1.cpp:(.text+0x2c4): undefined reference to `ITQuery::NextRow(ITEssential**)'
test1.cpp:(.text+0x2f1): undefined reference to `ITConnection::Close()'
test1.cpp:(.text+0x317): undefined reference to `ITQuery::~ITQuery()'
test1.cpp:(.text+0x32c): undefined reference to `ITQuery::~ITQuery()'
test1.cpp:(.text+0x366): undefined reference to `ITConnection::~ITConnection()'
test1.cpp:(.text+0x378): undefined reference to `ITConnection::~ITConnection()'
test1.cpp:(.text+0x3b2): undefined reference to `ITDBInfo::~ITDBInfo()'
test1.cpp:(.text+0x3ce): undefined reference to `ITDBInfo::~ITDBInfo()'
collect2: ld returned 1 exit status
Каталог /opt/Informix/11.5FC8/lib/c++
указан в LD_LIBRARY_PATH. Может ли кто-нибудь помочь мне избавиться от этих ошибок?