M4(1) - General Commands Manual

M4(1) - General Commands Manual # M4(1) - General Commands Manual NAME # m4 - macro language processor SYNOPSIS # m4 [-EgPs] [-D‌name[=value]] [-d flags] [-I dirname] [-o filename] [-t macro] [-U‌name] [file …] DESCRIPTION # The m4 utility is a macro processor that can be used as a front end to any language (e.g., C, ratfor, fortran, lex, and yacc). If no input files are given, m4 reads from the standard input, otherwise files specified on the command line are processed in the given order. ...