(make.info)Functions


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Functions for Transforming Text
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   "Functions" allow you to do text processing in the makefile to
compute the files to operate on or the commands to use.  You use a
function in a "function call", where you give the name of the function
and some text (the "arguments") for the function to operate on.  The
result of the function's processing is substituted into the makefile at
the point of the call, just as a variable might be substituted.

* Syntax of Functions
How to write a function call.
* Text Functions
General-purpose text manipulation functions.
* Filename Functions
Functions for manipulating file names.
* Foreach Function
Repeat some text with controlled variation.
* Origin Function
Find where a variable got its value.
* Shell Function
Substitute the output of a shell command.

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