GCC 4.6 Release Series Changes, New Features, and Fixes Caveats The options -b <machine> and -V <version> have been removed because they were unreliable. Instead, users should directly run <machine>-gcc when cross-compiling, or <machine>-gcc-<version> to run a different version of gcc. GCC now has stricter checks for invalid command-line options. In particular, when gcc was called to link object f