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Re: [bug #59399] Expanding implicit macros in gmake (enhancement request
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From: |
Dmitry Goncharov |
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Subject: |
Re: [bug #59399] Expanding implicit macros in gmake (enhancement request) |
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Date: |
Sun, 29 Nov 2020 21:48:30 -0500 |
On Sun, Nov 29, 2020 at 6:02 PM Jörg Schilling <INVALID.NOREPLY@gnu.org> wrote:
> I just verified that expanding $< and $* for explicit rules at all
> was an invention from SunPro Make. These macros have not been
> expanded by the classical UNIX make.
The seminal make manual of 1978 contains the following
"Before issuing any command, certain macros are set. $@ is set to the
name of the file to be ‘‘made’’. $? is
set to the string of names that were found to be younger than the
target. If the command was generated by
an implicit rule (see below), $< is the name of the related file that
caused the action, and $∗ is the prefix
shared by the current and the dependent file names."
See here
https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.95.9198&rep=rep1&type=pdf
regards, Dmitry