compiling programs with libstdc++

compiling programs with libstdc++

[Jason M'Sadoques]

I just compiled libstdc++ 2.90.8, to be used with gcc 2.95.2. I followed the directions for compiling just the library,
since I already had a working copy of gcc, except that I had to edit a Makefile to comment out the WERROR=-Werror line
because it was treating warnings as errors and would not finish compiling.

It compiled and installed fine, but however, when I try a test program:

//Test out libstdc++.

#include <iostream>
#include <ios>

int main()
{
  cout << hex << showbase;
  cout << int(12);
}

I get these errors in trying to link:

jlm /home/jlm/code2/temp 252>g++ -I/usr/include/g++-v3 dud.cpp
/tmp/ccWA5q6N.o: In function `main':
/tmp/ccWA5q6N.o(.text+0x1c): undefined reference to `basic_ostream<char, char_traits<char> >::operator<<(ios_base &(*)(ios_base &))'
/tmp/ccWA5q6N.o(.text+0x27): undefined reference to `basic_ostream<char, char_traits<char> >::operator<<(ios_base &(*)(ios_base &))'
/tmp/ccWA5q6N.o: In function `__static_initialization_and_destruction_0':
/tmp/ccWA5q6N.o(.text+0x66): undefined reference to `ios_base::Init::Init(void)'
/tmp/ccWA5q6N.o(.text+0x7b): undefined reference to `ios_base::Init::~Init(void)'
/tmp/ccWA5q6N.o: In function `basic_ostream<char, char_traits<char> >::operator<<(int)':
/tmp/ccWA5q6N.o(.gnu.linkonce.t.__ls__t13basic_ostream2ZcZt11char_traits1Zci+0x67): undefined reference to `basic_ostream<char, char_traits<char> >::operator<<(unsigned long)'
/tmp/ccWA5q6N.o(.gnu.linkonce.t.__ls__t13basic_ostream2ZcZt11char_traits1Zci+0x7c): undefined reference to `basic_ostream<char, char_traits<char> >::operator<<(long)'
collect2: ld returned 1 exit status

but I get this error if I specify the library path:

jlm /home/jlm/code2/temp 251>g++ -I/usr/include/g++-v3 -L/usr/lib dud.cpp
/usr/lib/libstdc++.so: undefined reference to `__ne__H3ZPPQ26locale5facetZPPQ26locale5facetZt6vector2ZPQ26locale5facetZt9allocator1ZPQ26locale5facet_RCt17__normal_iterator2ZX01ZX21RCt17__normal_iterator2ZX11ZX21_b'
collect2: ld returned 1 exit status

Now this is odd, because it should already know the library path. I'm not sure how this happened, and any help in getting
things to compile would be appreciated. I am running Linux 2.2.17 on an i386 machine.

Thanks
--
MACINTOSH = Machine Always Crashes If Not The Operating System Hangs
"Life would be so much easier if we could just look at the source code." - Dave Olson

Re: compiling programs with libstdc++

[aoliva]

On Aug  1, 2001, "Jason M'Sadoques" <jsado@mediaone.net> wrote:

> jlm /home/jlm/code2/temp 252>g++ -I/usr/include/g++-v3 dud.cpp

Did you try -fhonor-std ?

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

Re[2]: compiling programs with libstdc++

[Jason M'Sadoques]

On 01 Aug 2001 23:25:26 -0300 aoliva@redhat.com wrote:

> On Aug  1, 2001, "Jason M'Sadoques" <jsado@mediaone.net> wrote:
> 
> > jlm /home/jlm/code2/temp 252>g++ -I/usr/include/g++-v3 dud.cpp
> 
> Did you try -fhonor-std ?
Thanks for the quick response. I added using namespace std;
and then recompiled with -fhonor-std and got the same linking errors:

jlm /home/jlm/code2/temp 261>g++ -fhonor-std -I/usr/include/g++-v3 dud.cpp
/tmp/ccx5BRT3.o: In function `main':
/tmp/ccx5BRT3.o(.text+0x17): undefined reference to `std::cout'
/tmp/ccx5BRT3.o(.text+0x1c): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::ios_base &(*)(std::ios_base &))'
/tmp/ccx5BRT3.o(.text+0x27): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::ios_base &(*)(std::ios_base &))'
/tmp/ccx5BRT3.o(.text+0x34): undefined reference to `std::cout'
/tmp/ccx5BRT3.o: In function `__static_initialization_and_destruction_0':
/tmp/ccx5BRT3.o(.text+0x66): undefined reference to `std::ios_base::Init::Init(void)'
/tmp/ccx5BRT3.o(.text+0x7b): undefined reference to `std::ios_base::Init::~Init(void)'
/tmp/ccx5BRT3.o: In function `std::ios_base::failure type_info function':
/tmp/ccx5BRT3.o(.gnu.linkonce.t.__tfQ33std8ios_base7failure+0x10): undefined reference to `std::exception type_info function'
/tmp/ccx5BRT3.o(.gnu.linkonce.t.__tfQ33std8ios_base7failure+0x1a): undefined reference to `std::exception type_info node'
/tmp/ccx5BRT3.o: In function `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)':
/tmp/ccx5BRT3.o(.gnu.linkonce.t.__ls__Q23stdt13basic_ostream2ZcZQ23stdt11char_traits1Zci+0x67): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(unsigned long)'
/tmp/ccx5BRT3.o(.gnu.linkonce.t.__ls__Q23stdt13basic_ostream2ZcZQ23stdt11char_traits1Zci+0x7c): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(long)'
collect2: ld returned 1 exit status

For reference again, here is my program:

//Test out libstdc++.

#include <iostream>
#include <ios>

using namespace std;
int main()
{
  cout << hex << showbase;
  cout << int(12);
}
--
MACINTOSH = Machine Always Crashes If Not The Operating System Hangs
"Life would be so much easier if we could just look at the source code." - Dave Olson

Re: Re[2]: compiling programs with libstdc++

[Alexandre Oliva]

On Aug  2, 2001, "Jason M'Sadoques" <jsado@mediaone.net> wrote:

> jlm /home/jlm/code2/temp 261>g++ -fhonor-std -I/usr/include/g++-v3 dud.cpp
> /tmp/ccx5BRT3.o: In function `main':
> /tmp/ccx5BRT3.o(.text+0x17): undefined reference to `std::cout'

It doesn't seem like you have build libstdc++-v3 with -fhonor-std, as
in the recommended installation procedure (IIRC).

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me