Re: help with implicit rules

[Kosala Atapattu]

Hi Paul,

Sorry for not stating the problem. The Makefile doesn't do anything.
It doesn't seem to fireup the implicit rule.

<snip>
address@hidden:~/programs/homepage/quiki $
cat Makefile
.SUFFIXES: .html .page

all: $(*.html:.page=.html)

%.html : %.page
        perl compile_page.pl -T template/main.tpl -o $@ $<


address@hidden:~/programs/homepage/quiki $
make
make: Nothing to be done for `all'.

address@hidden:~/programs/homepage/quiki $
ls -l *.page
-rw-r--r-- 1 kosala kosala  71 Sep 16 12:13 banner.page
-rw-r--r-- 1 kosala kosala  93 Sep 16 12:13 footer.page
-rw-r--r-- 1 kosala kosala   0 Nov 20 09:23 kosala.page
-rw-r--r-- 1 kosala kosala   0 Sep 16 12:13 neloufer.page
-rw-r--r-- 1 kosala kosala  32 Sep 16 12:13 site_map.page
-rw-r--r-- 1 kosala kosala 275 Sep 16 12:13 test.page

address@hidden:~/programs/homepage/quiki $

</snip>

When I do a make -p

# Not a target:
%.html: %.page
#  commands to execute (from `Makefile', line 6):
        perl compile_page.pl -T template/main.tpl -o $@ $<
....

# Not a target:
.page:
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
....

# Not a target:
.html:
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

This looks like the rule is not fired.... couldn't figure out why.

Ko


On 11/20/12, Paul Smith <address@hidden> wrote:
> On Tue, 2012-11-20 at 11:04 +0530, Kosala Atapattu wrote:
>> I'm trying to write a implicit rule to convert a text page to a html
>> using
>> perl based wiki preprocessor... I got the perl part working but I can't
>> seem to get Make to do the rest. I have the following make file.
>>
>> <Makefile>
>>
>> .SUFFIXES: .html .page
>>
>> %.html : %.page
>>         echo $<
>>         perl compile_page.pl -T template/main.tpl -o $@ $<
>>
>> </Makefile>
>>
>> What did I do wrong here.. according to the doc I should be able to do
>> this
>> rt?
>
> It looks right to me.  You don't need the .SUFFIXES line when using
> pattern rules but it shouldn't hurt either.
>
> You haven't given any indication of what the problem is, though, so
> that's about all I can say.  Try explaining what result you expected to
> get, and what result you actually got (with as much cut-and-paste as is
> reasonable).  Then we can help.
>
>
>


-- 
Kosala
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