writes "A new major version of the classic GNU Make software has been released. First of all, Make 4.0 has integration support for GNU Guile. Guile is the extension system of the GNU project that is a Scheme programming language implementation and now in the Make world will be the embedded extension language. 4.0 also features a new "output-sync" option, "trace-enables" for tracing of targets, a "none" flag for the "debug" argument, and the "job server" and .ONESHELL features are now supported under Windows. There are also new assignment operators, a new function for writing to files, and other enhancements. It's been reported that Make 4.0 also has more than 80 bug-fixes. More details can be found from their release announcement on the mailing list."