Newsgroups: comp.os.msdos.djgpp
Subject: fstream problems?
From: thelemur AT nowhere DOT not (Wesel)
Organization: C.O.W. Inc
Message-ID: <8FF1CB55A0wf89u@206.13.28.143>
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Date: Mon, 20 Nov 2000 03:54:56 GMT
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

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

The following code:

test.cpp:
---------------------------


#include <fstream>

void main(void)
{
	int integer = 0;
	ifstream fp("file.txt");
	fp >> integer;
}

//end test.cpp
---------------------------

produced the following linker error:

---------------------------

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