Generic Makefile rules

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5 total messages Started by * Tong * Sat, 29 Sep 2001 23:35

#29469

Author: * Tong *
Date: Sat, 29 Sep 2001 23:35

27 lines
1664 bytes

Hi,

This is from my make file. I'm wondering if there is any way to
simplify it, so that I don't have to repeat myself 3 times...

- - >8 - -
%.htm: %.pm
	pod2html --infile=$< --outfile=$@
	rm pod2html-*

%.htm: %.pl
	pod2html --infile=$< --outfile=$@
	rm pod2html-*

%.htm: %.pod
	pod2html --infile=$< --outfile=$@
	rm pod2html-*
- - >8 - -

I want to make a generic Makefile so that .htm file can be
generated from either .pm, .pl or .pod file, depending on which file
actually exists...

-- 
Tong (remove underscore(s) to reply)
  *niX Power Tools Project: http://xpt.sourceforge.net/
  - All free contribution & collection

Re: Generic Makefile rules

#29470

Author: Erik Max Francis
Date: Sun, 30 Sep 2001 00:19

18 lines
1703 bytes

* Tong * wrote:

> I want to make a generic Makefile so that .htm file can be
> generated from either .pm, .pl or .pod file, depending on which file
> actually exists...

The way you have it set up to do it right now is just fine.  You could
delegate that to some kind of script that you run which uses the right
thing, but ultimately the way make works is by turning files with
certain extensions into files with other extensions.

-- 
 Erik Max Francis / max@alcyone.com / http://www.alcyone.com/max/
 __ San Jose, CA, US / 37 20 N 121 53 W / ICQ16063900 / &tSftDotIotE
/  \ God will forgive me; that's his business.
\__/ Heinrich Heine
    Erik Max Francis' bookmarks / http://www.alcyone.com/max/links/
 A highly categorized list of Web links.

Re: Generic Makefile rules

#29471

Author: Jonathan Kamens
Date: Sun, 30 Sep 2001 00:33

11 lines
1333 bytes

define pod2html-rule
        pod2html --infile=$< --outfile=$@
        rm pod2html-*
endef

%.htm: %.pm
        $(pod2html-rule)
%.htm: %.pl
        $(pod2hmtl-rule)
%.htm: %.pod
        $(pod2html-rule)

Re: Generic Makefile rules

#29472

Author: Cal Dunigan
Date: Mon, 01 Oct 2001 21:30

27 lines
2190 bytes

Erik Max Francis wrote:

> * Tong * wrote:
>>I want to make a generic Makefile so that .htm file can be
>>generated from either .pm, .pl or .pod file, depending on which file
>>actually exists...

 >

> The way you have it set up to do it right now is just fine.  You could
> delegate that to some kind of script that you run which uses the right
> thing, but ultimately the way make works is by turning files with
> certain extensions into files with other extensions.

Make works by executing rules, usually on the target file, if the 
dependent file(s) are newer than the target.

Unix filenames don't have extensions.

-- 
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
     Cal Dunigan      cdi           There is something fundamentally
       Consulting       Unix        wrong with a world in which Ken
       Modeling         Perl        Thompson lives in obscurity and
       Training         VHDL        Bill Gates is a famous billionaire.
//////////////////////////////////////////////////////////////////////

Re: Generic Makefile rules

#29473

Author: Erik Max Francis
Date: Mon, 01 Oct 2001 22:58

21 lines
1875 bytes

Cal Dunigan wrote:

> Make works by executing rules, usually on the target file, if the
> dependent file(s) are newer than the target.
> 
> Unix filenames don't have extensions.

Technically correct, but irrelevant and missing the point.  Yes, UNIX
proper doesn't know anything about file extensions.  Make just turns
files into other files, but what he wants to do is use make to turn
files with certain extensions into files with another extension.  The
best way to do this with make is to use rules, just as he did, which
tell how to build a .htm file from a .pl file, and so on.

-- 
 Erik Max Francis / max@alcyone.com / http://www.alcyone.com/max/
 __ San Jose, CA, US / 37 20 N 121 53 W / ICQ16063900 / &tSftDotIotE
/  \ Honesty has nothing to hide
\__/ Joi
    Maths reference / http://www.alcyone.com/max/reference/maths/
 A mathematics reference.

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