From: Nate Eldredge <neldredge AT hmc DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: fstream problems?
Date: 19 Nov 2000 21:01:12 -0800
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thelemur AT nowhere DOT not (Wesel) writes:

> I have been having trouble with the fstream class in djgpp.  It seems I 
> have a misplaced library, or perhaps a damaged one.  

No.

> gcc -c test.cpp
> gcc test.o -o test.exe

This should be gxx, not gcc.

> test.o(.text+0x32):test.cpp: undefined reference to 
> `ifstream::ifstream(int, cha
> r const *, int, int)'
> test.o(.text+0x48):test.cpp: undefined reference to 
> `istream::operator>>(int &)'
> 
> test.o(.text+0x60):test.cpp: undefined reference to 
> `ifstream::~ifstream(void)'
> test.o(.text+0x7a):test.cpp: undefined reference to 
> `ifstream::~ifstream(void)'
> collect2: ld returned 1 exit status
> make.exe: *** [test.exe] Error 1
> 
> ---------------------------
> 
> Any suggestions?  Even when I went
> 
> gcc -lstdcxx test.o -o test.exe
>
> it gave the same errors.

Because link order matters.  If you'd put -lstdcxx at the end of the
line, it should have worked, AFAIK.

> For some reason, istream, and ifstream seem to be 
> present in the header files, but missing from the libraries.  
> 
> I desperately hope that's wrong though.  I used cout and cin perfectly in 
> other programs.  Only when I tried to use ifstream did things start blowing 
> up.
> 
> Thank you for any advice
> 
> 
> Wesel
> Who's still brushing off the soot from his computer exploding...

-- 

Nate Eldredge
neldredge AT hmc DOT edu