Hi Marco.
gcc4 is for building on cygwin for cygwin.
-mno-cygwin was for building on cygwin for NO cygwin, like mingw. It is now a deprecated tweak.
For that scope are now available 2 cross-compilers see packages:
mingw-gcc-core mingw64-i686-gcc-core
both as 4.5.x versions
Thanks for the info. One works, one doesn't. C:\devel\bwbasic>i686-pc-mingw32-gcc --version i686-pc-mingw32-gcc (GCC) 4.5.2 C:\devel\bwbasic>i686-pc-mingw32-gcc zatest.c C:\devel\bwbasic>a 2.000000 2.000000 C:\devel\bwbasic>i686-pc-mingw32-gcc -ansi zatest.c C:\devel\bwbasic>a 0.000000 2.000000 C:\devel\bwbasic>i686-w64-mingw32-gcc --version i686-w64-mingw32-gcc (GCC) 4.5.3 C:\devel\bwbasic>i686-w64-mingw32-gcc zatest.c C:\devel\bwbasic>a 2.000000 2.000000 C:\devel\bwbasic>i686-w64-mingw32-gcc -ansi zatest.c C:\devel\bwbasic>a 2.000000 2.000000 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple