Unresolved symbol: std::basic_ostream char,std::char_trai ...

Question

Hi,
Below is a simple app that I created which demonstrates the mysterious compilation problems that I am seeing. I get the following unresolved symbol :
Undefined first referenced
symbol in file
std::basic_ostream<char,std::char_traits<char> >&std::operator<<(std::basic_ostream<char,std::char_traits<char> >&,const char*) ./libIOTestSD.a(iotest.o)
std::cout ./libIOTestSD.a(iotest.o)
[Hint: static member std::cout must be defined in the program]
I am using workshop 6.1 for comilation. I would appreciate any help on this.
Thanks in advance.
Ranga.
#ifndef COM4
#include <iostream>
using namespace std ;
#else
#include <iostream.h>
#endif
class IOTest {
public:
IOTest() ;
void test(const char* str) ;
private:
ostream _os ;
#include <iotest.hpp>
IOTest::IOTest()
_os = &cout ;
void IOTest::test(const char* str)
_os << str ;
#include "iotest.hpp"
int main(int argc, char** argv)
IOTest iotest ;
const char* SAY = "Hello World!!!\n" ;
iotest.test(SAY) ;
return 0 ;
Compilation commands:
CC -g -pto -mt -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -D_DEBUG -DDEBUG -KPIC -I. -I../../include -I/opt/ws6.1/SUNWs
pro/WS6U1/include/CC/Cstd -o iotest.o -c iotest.cpp
CC -o ./libIOTestSD.a -g -pto -mt -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -D_DEBUG -DDEBUG -xar iotest.o
CC -g -pto -mt -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -D_DEBUG -DDEBUG -KPIC -I. -I../../include -I/opt/ws6.1/SUNWs
pro/WS6U1/include/CC/Cstd -o testapp.o -c testapp.cpp
CC -o testapp -g -instances=static -mt +d -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -DUNIX -DUNICODE -D_UNICODE  -D_DEB
UG -DDEBUG -z text -z defs -G -KPIC testapp.o -Bstatic -lCstd -lCrun -Bstatic -lIOTestSD -Bdynamic -lgen -lm -lw -lcx
-lc

Answer 1

This went away when I moved around the libraries on the link line. Some how I was under the impression that order is not important in newer versions of compilers, but whatever it worked... Also I had to remove -z text.
So, the new compilation command would be
CC -o testapp -g -instances=static -mt +d -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -DUNIX -DUNICODE -D_UNICODE -D_DEB
UG -DDEBUG -z defs -G -KPIC testapp.o -Bstatic -lIOTestSD -lCstd -lCrun -Bstatic -Bdynamic -lgen -lm -lw -lcx -lc
Thanks all,
Rg