man-pages-6.11 - manual pages for GNU/Linux There are some breaking changes in this version: - [Breaking change!] Require the user to pass '-R' to make(1). This is necessary to be able to do the following change. When GNU make(1) releases a new version, it will not be necessary to pass -R, but in current versions of make(1) it is necessary. - [Breaking change!] Use '?=' assignments instead of ':=', to support setting make(1) variables in the environment. Now one can do this: $ export prefix=/usr $ make -R $ sudo make install -R (The -R is only necessary in GNU make(1) versions prior to the yet-unreleased 4.5.)