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Date: 28 Mar 99 16:14:31 PST
From: Dave Braze <davebraze AT netscape DOT net>
To: <cygwin AT sourceware DOT cygnus DOT com>
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I am having problems compiling C++ programs with b20.1 on Windows 95 sr2. 
Since I am trying to use cygwin to learn C++ and unix style tools both, I 
don't have a good handle on the relevant terminology, but here it is.

I can't compile a simple "hello world" program. Here it is:

     #include  <iostream>

     int main()
     {
       std::cout << "Hello world!\n";
       exit(0);
     }

I get an error like this (sorry for the long line):

c:\CYGNUS\CYGWIN-B20\H-I586-CYGWIN32\BIN\..\lib\gcc-lib\i586-cygwin32\egcs-2.91.57\collect2.exe
-o hello.exe -s
c:\CYGNUS\CYGWIN-B20\H-I586-CYGWIN32\BIN\..\lib\gcc-lib\i586-cygwin32\egcs-2.91.57\..\..\..\..\i586-cygwin32\lib\crt0.o
-Lc:\CYGNUS\CYGWIN-B20\H-I586-CYGWIN32\BIN\..\lib\gcc-lib\i586-cygwin32\egcs-2.91.57
-Lc:\CYGNUS\CYGWIN-B20\H-I586-CYGWIN32\BIN\..\lib\gcc-lib
-L\cygnus\cygwin-b20\H-i586-cygwin32\lib\gcc-lib\i586-cygwin32\egcs-2.91.57
-Lc:\CYGNUS\CYGWIN-B20\H-I586-CYGWIN32\BIN\..\lib\gcc-lib\i586-cygwin32\egcs-2.91.57\..\..\..\..\i586-cygwin32\lib
-L\cygnus\cygwin-b20\H-i586-cygwin32\lib\gcc-lib\i586-cygwin32\egcs-2.91.57\..\..\..\..\i586-cygwin32\lib
-Lc:\CYGNUS\CYGWIN-B20\H-I586-CYGWIN32\BIN\..\lib\gcc-lib\i586-cygwin32\egcs-2.91.57\..\..\..
hello.o -lgcc -lcygwin -lkernel32 -ladvapi32 -lshell32 -lgcc
hello.o(.text+0x1e):hello.cc: undefined reference to `cout'
hello.o(.text+0x23):hello.cc: undefined reference to `ostream::operator<<(char
const *)'
collect2: ld returned 1 exit status
make: *** [hello.exe] Error 1

Incidently I have no problem compiling a 'c'  version of "hello world". It
seems like the problem has to do with linking to the c++  libraries, but I'm
not sure where the problem might be in my installation. When I installed
cygwin I accepted the default install directory. Also, the same error occurs
whether I  use gcc from the command line, or use a trivial make file. I can't
imagine that this should cause a problem, but I do have a version of djgpp
installed on my system (poverty of imagination?). 

In any event, all help will be very much appreciated.

-Dave Braze


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