I successfully built GCC version 4.1.1 on Cygwin. The details:
Output of running config.guess:
i686-pc-cygwin
Output of gcc -v:
Using built-in specs.
Target: i686-pc-cygwin
Configured with: ../gcc-4.1.1/configure --prefix=/usr/local/gcc-4.1.1
--program-suffix=-4.1.1 --enable-threads=win32 --with-cpu=i686
--with-arch=i686 --with-tune=i686 --enable-languages=c,c++
Thread model: win32
gcc version 4.1.1
Language subset: C, C++
Operating system and environment:
Microsoft Windows 2000 Professional, Service Pack 4
The build went without problems.
Jesper de Jong
The Netherlands