On Sunday 17 March 2002 20:34, Christopher Currie wrote: > I recently installed gcc from cvs, since I understand people have had > success with it, pretty much out of the box. I'm getting link errors > compiling trival C++ programs, with both my local g++ and the Cygwin > standard g++. I can overcome these errors if I explicitly link the right > copy of libstdc++.a into the application, as demonstrated in the examples > below. > > Can gcc 2.95 and gcc 3.x not coexist? I'm guessing it's either that or I > installed gcc incorrectly somehow, but I'm not sure where I went wrong. Any > help or direction would be appreciated. > > Christopher > I thought everyone recognized that mixing c++ libraries between gcc-3.1 and gcc-2.95 was even less likely to work than between gcc-3.0x and 2.95. Even the use of 2.95 with non-default stack alignment is enough to break the libraries which come with it, and commercial compilers which aim at a degree of gcc compatibility don't try to mix libraries. Yes, it's easy to break the cygwin g++/g77 installation by a parallel installation of gcc-3.1, even with the best of intentions, but each compiler should default to its own copy of libstdc++, if you install them normally in separate directories. -- Tim Prince
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