Multiple GCC Installation Problems

["Reece Dunn" <msclrhd at hotmail dot com>]

Dear All,

I have installed a pre-built version of GCC 2.95.3-5 on the i686-cygwin 
platform using the cygwin installer, placing it in the root directory. This 
installation worked fine when tested.

I then used it to build and install GCC 3.0 to /usr/local/, which didn't 
report any errors (at least as far as I can tell -- the build/install 
process produces far too much information IMHO making it hard to trace 
problems).

Compiling on either version works fine. The problem is, when linking, I get 
the following:

[bjam]
gcc.link ..\..\code\hello\bin\gcc\debug\hello.exe
..\..\code\hello\bin\gcc\debug\hello.o: In function `main':
/cygdrive/d/devel/ADL++/code/hello/..\..\code\hello\hello.cpp:6: undefined 
refer
ence to `cout'
/cygdrive/d/devel/ADL++/code/hello/..\..\code\hello\hello.cpp:6: undefined 
refer
ence to `ostream::operator<<(char const *)'
/cygdrive/d/devel/ADL++/code/hello/..\..\code\hello\hello.cpp:6: undefined 
refer
ence to `ostream::operator<<(char)'
collect2: ld returned 1 exit status

   g++  -g     -o "..\..\code\hello\bin\gcc\debug\hello.exe"  
"..\..\code\hello
\bin\gcc\debug\hello.o"   -Wl,-Bdynamic  -Wl,-Bstatic  -Wl,-Bdynamic

...failed gcc.link ..\..\code\hello\bin\gcc\debug\hello.exe...
[/bjam]

I had a workaround when using make files to add $(gcc-dir)/lib/libstdc++.a 
to the link files. As far as I can see, the problem occurs with the GCC 2 
stdc++ library in the root directory and libstdc++3 in /usr/local/ and the 
linker isn't finding the correct version of libstdc++.a.

Does anyone have a better solution to this, especially as I am intending on 
installing other GCC versions (using, for example, 
--prefix=/usr/local/gcc-3.2.3)?

Regards,
Reece Dunn

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