wok annotate m4/description.txt @ rev 24875
updated m4 (1.4.18 -> 1.4.19)
| author | Hans-G?nter Theisgen |
|---|---|
| date | Thu Mar 31 10:07:36 2022 +0100 (2022-03-31) |
| parents | |
| children |
| rev | line source |
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| Hans-G?nter@24875 | 1 GNU M4 is an implementation of the traditional Unix macro processor. |
| Hans-G?nter@24875 | 2 It is mostly SVR4 compatible although it has some extensions |
| Hans-G?nter@24875 | 3 (for example, handling more than 9 positional parameters to macros). |
| Hans-G?nter@24875 | 4 GNU M4 also has built-in functions for including files, running shell |
| Hans-G?nter@24875 | 5 commands, doing arithmetic, etc. |
| Hans-G?nter@24875 | 6 |
| Hans-G?nter@24875 | 7 GNU M4 is a macro processor in the sense that it copies its input to |
| Hans-G?nter@24875 | 8 the output expanding macros as it goes. Macros are either builtin or |
| Hans-G?nter@24875 | 9 user-defined and can take any number of arguments. |
| Hans-G?nter@24875 | 10 Besides just doing macro expansion, m4 has builtin functions for |
| Hans-G?nter@24875 | 11 including named files, running UNIX commands, doing integer arithmetic, |
| Hans-G?nter@24875 | 12 manipulating text in various ways, recursion etc... |
| Hans-G?nter@24875 | 13 m4 can be used either as a front-end to a compiler or as a macro |
| Hans-G?nter@24875 | 14 processor in its own right. |
| Hans-G?nter@24875 | 15 |
| Hans-G?nter@24875 | 16 One of the biggest users of GNU M4 is the GNU Autoconf project. |