Re: Need a make guru; embedding web pages

>
> On Aug 31, 2011, at 9:06 PM, Rick Mann wrote:
>
>>
>> On Aug 30, 2011, at 12:41 , David Kelly wrote:
>>
>>> I think I'd put the WebFileTOC in a .c and define an empty extern
>>> WebFileTOC in the .h. You really don't want memory allocation occurring
>>> in a .h as you show above.
>>
>> I agree, and would like to eventually incorporate that change.
>
> Its a small change. Just split your (WEBHEADER) target in two like this:
>
> WEBHEADER = web.h
> WEB_C     = web.c
>
> $(WEBHEADER) : $(HTML) $(CSS) $(PNG) #$(HTMLOBJS) $(CSSOBJS) $(PNGOBJS)
> for f in $(^F); do \
> ff=$${f/./_}; \
> echo "extern const char" $${ff}"[];" >> $(WEBHEADER); \
> echo "extern const char" $${ff}_end"[];" >> $(WEBHEADER); \
> done; \
> echo "extern const WebFileTOC sWebTOC; >> $(WEBHEADER);
>
> $(WEB_C) : $(HTML) $(CSS) $(PNG)
> echo "#include \"$(WEBHEADER)\"\n" >> $(WEB_C); \
> echo "WebFileTOC sWebTOC = {" >> $(WEB_C); \
> for f in $(^F); do \
> ff=$${f/./_}; \
> echo "{ \"$${f}\", $${ff}, $${ff}_end }," >> $(WEB_C); \
> done; \
> echo "};\n" >> $(WEB_C);
>
>>> Then in your Makefile add a pattern rule:
>>>
>>> %.html : %.o
>>> avr-objcopy -B elf $< $@
>>>
>>> Perhaps rename your files to index_html.html, error_html.html, and
>>> main_css.html so as to get something close to the names you have used
>>> above.
>>
>> I guess I wasn't clear enough. I actually have a rule like that, and the file you see was actually generated by my Makefile. The problem is that it doesn't properly handle the dependencies. I want a change in a .html to result in the web.h being re-built, and then any code that includes web.h being recompiled.
>>
>> Maybe I just need to ensure that these rules are the first to execute in the Makefile?
>
> Order shouldn't matter to anything but determination of the default target. You don't show your default target but web.h has to be listed as a build dependency.
>
> Once again I think you need a web.c to hold the memory allocation. Add it to your .c source list so that it will be built. Also add this so that make knows web.o depends on web.h:
>
> web.o : web.c web.h
>
> You need similar for anything that uses web.h because they too need to be rebuilt if web.h changes. You might let the compiler build a dependency tree for you in Makefile format. I used this in one of my AVR projects. IIRC it was copied from another project I was doing in FreeBSD where one has BSD make and sometimes GNU make, which differ in how this is handled. Believe this almost finds common ground:
>
> depend: clean $(SRCS)
>        $(CC) -E -M $(SRCS) > .depend
>
> # BSD make automatically reads .depend if it exists, but GNU needs to be told.
> # -include fails silently in GNU Make if .depend does not exist
> # -include is not BSD Make compatible and will fail fatally. Comment out, not needed.
> -include .depend
>
> The .depend file produced lists *all* dependancies tracking every #include recursively through your system to the very end.
>
> --
> David Kelly N4HHE, dkelly@...
> ========================================================================
> Whom computers would destroy, they must first drive mad.
>
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