Go to the first, previous, next, last section, table of contents.


Extensions in GNU m4

This version of m4 contains a few facilities, that do not exist in System V m4. These extra facilities are all suppressed by using the `-G' command line option, unless overridden by other command line options.

In addition to the above extensions, GNU m4 implements the following command line options: `-F', `-G', `-I', `-L', `-R', `-V', `-W', `-d', `-l', `-o' and `-t'. See section Invoking m4, for a description of these options.

Also, the debugging and tracing facilities in GNU m4 are much more extensive than in most other versions of m4.


Go to the first, previous, next, last section, table of contents.