g++ linking trouble ?

an-arhos · 05-04-2006, 11:12 AM

Hi,
I'm trying to compile some simple c++ program, but I can't.

I am using this command

g++ -o parser-example srcsrc/parser-example.cpp

and I get this output:

Quote:

/root/tmp/ccZhkMoC.o(.text+0x1c): In function `main':
: undefined reference to `CgiParser::CgiParser[in-charge]()'
/root/tmp/ccZhkMoC.o(.text+0x56): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0xd0): In function `main':
: undefined reference to `CgiParser::is_empty()'
/root/tmp/ccZhkMoC.o(.text+0x126): In function `main':
: undefined reference to `CgiParser::get_value(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x292): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x29b): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x2a4): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x448): In function `main':
: undefined reference to `CgiParser::get_value(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x5b7): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x5c0): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x5c9): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x753): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/root/tmp/ccZhkMoC.o(.text+0x7d6): In function `main':
: undefined reference to `CgiParser:

perator<<(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
collect2: ld returned 1 exit status

I've tried to compile some more complicated files and I couldn't do it so I mean't that I didn't link librarys well, but this is so simple example wich uses none library and I do not understand what is the problem.

Can anybody help please ?

graemef · 05-04-2006, 12:01 PM

There looks to be a class called CgiParser, which the linker can't find. Is this in another file to parser-example.cpp?

an-arhos · 05-04-2006, 12:30 PM

This class is decalred in file parser.h.
That file is the only one included in parser-example.cpp.

graemef · 05-04-2006, 12:38 PM

Where are the CgiParser functions defined, parser.cpp maybe? If so that file will also need to be compiled and linked.

an-arhos · 05-04-2006, 12:45 PM

Off course You are right.
When I included parser.cpp in compiling process it worked.
Thnx

graemef · 05-04-2006, 01:05 PM

No worries